Otherwise, all these devices are the same and interchangeable with one another. The opamp shown here is the TL072. 05 to 2nA Icc max TL082 = 2. The input resistance depends mainly on resistors R1, R2, R3 and R4. Q: I'd like to upgrade operational amps TL072 by OPA2604 or TL082, what do you think of this? A: Nothing! Neither of the cited op-amps is a potential upgrade, nor are a great many others. Texas Instruments seems to think, "The JFET-input operational amplifiers in the TL07x series are similar to the TL08x series. When using power supplies higher than 12V, the value of R10 must be raised accordingly. The TL072, with its JFET inputs, was used wherever its negligible input bias currents and low cost were important. I kept the NE5532's in IC1(boost channel), IC3(FX loop) and IC4(reverb) and just recently settled on the OPA2132 for IC2(normal channel). Where do I find models for various common op amps for use in LTSpice. And a transistor C945 as a buffer circuit and other components of resistors and capacitors. The application that to you we propose is a simple filter of region that limits the acoustic region (20-20000Hz) in the region 20-100Hz. Dual JFET input Op Amp LF412 LF442 LF353 TL032 TL052 TL062 TL072 TL082 Quad JFET input Op Amp LF347 LF444 TL034 TL054 TL064 TL074 TL084 In many applications, the JFET input Op Amps will be a drop-in substitute for the bi-polar op amps as well. Replace it with any reasonably decent dual op amp - TL072, TL082, 4558, etc. Except that one, there still have some other features and applications we may need to know, which can help us to make use of it well, like Buffer application, DC gain blocks, Comparators, Filter circuits, voltage followers, circuit requiring high input. I designed mine around a TL062 because that's what I had laying around at the time. Relatively proven opamps are the TL072, JRC4558, JRC4560, NE5532, OP-275, the LM833; there are many others. Re: confusion regarding the TL072, TL082 and the 4580D. Otherwise two 9V batteries will do the trick. CA3140E is pin equivalent to the LM741. The only difference is the mechanical appearance: trimming potentiometers are normally much smaller and have a very short axis that is adjusted with a screw driver. What is important is the minimum voltage required to drive the amplifier, in the case of the TL082 this is =/- 5V. I've not dug into the separate data sheets later in the brochure. Where do I find models for various common op amps for use in LTSpice. Just like a set of synaptically connected neurons, this module is noisy and unruly. Do the matching of the fets, because the wave will be uniform. I suspect many others will also. Buy Other Semiconductors & Actives and get the best deals at the lowest prices on eBay! 1-20pcs TL071 TL072 TL074 TL081 TL082 TL084 Low Noise IC J-FET Input Op. So to perform my experiment/circuit setup a 358 to measure the difference in volts across. TL082 Wide Bandwidth Dual JFET Input Operational Amplifier GeneralDescription These devices are low cost high speed dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET IITM technology) They require low supply current yet maintain a large gain bandwidth product and fast. 10pcs/lot TL072CP DIP8 TL072 DIP TL072CN DIP-8 In Stock 0. The internal diagrams look the same, but not all values are given. Top Log in or register to post comments. maybe something like LM318 or something) - the TI TL062/TL072/TL082 are a good example of it. Through Hole Operational Amplifiers - Op Amps are available at Mouser Electronics. 0 Store: IC global Store. The 08X has a higher slew rate of 50 nsec vs. Figure 1 shows the schematic of a simple circuit that is capable of "driving" a thermistor. I used a TL082 instead of the TL072 and it seemed to make very little difference in the circuit nor in the sound. On the TL082 op-amp, for example, this occurs when the common-mode input voltage comes within about 0. So there are very cheap and easy to build. 5-digit meters typically use an LM399 reference internally, so when using the 10V range to measure the 7V output of an LM399 directly, one must ask if you are measuring the drift of the LM399. From memory the 5532 and TL072 mentioned will drop in and line up with the 4558 pins. SEMI CONDUCTOR PACKAGE PINOUTS (BOTTOM VIEW) All packages are viewed from below or the rear of the package, with the heatsinking surface upwards, unless otherwise noted. TL072 OP-AMP IC: Pinout, Pin Configuration, Equivalents, Datasheet. 5mA and 13mA respectively. The second circuit is only suitable for AF amplifiers with dual op amps because it requires equal DC voltage levels at inputs and outputs as well as insensitivity of them against supply voltage changes. Therefore if the source impedance is very low (spec'd at 20 ohms), the NE5532 is 3 times quieter. When using power supplies higher than 12V, the value of R10 must be raised accordingly. Compared to most of the standard operational amplifiers, such as the 1458, it shows better noise performance, improved output drive capability and considerably higher small-signal and power bandwidths. And a transistor C945 as a buffer circuit and other components of resistors and capacitors. can someone tell me the difference between the TL072 and the TL062?? the fact is that i'm modding a bit my Boss Flanger and i wanna change the 2 4558. Through Hole Operational Amplifiers - Op Amps are available at Mouser Electronics. maybe something like LM318 or something) - the TI TL062/TL072/TL082 are a good example of it. TL071, TL081, TL072, TL082 are good for many audio applications. It sounds to me like you have a grounding issue somewhere. The first AGC circuit is more universal. The internal diagrams look the same, but not all values are given. When using power supplies higher than 25V, the working voltage value of C5 must be raised to 35 or 50V. The electronic function of a "normal" potentiometer and a trimming potentiometer is the same. So there are very cheap and easy to build. use the following search parameters to narrow your results: subreddit:subreddit find submissions in "subreddit" author:username find submissions by "username" site:example. To turn it into a voltage amplifying device you just put resistors in the right places so that voltages produce currents, and vice versa. Relatively proven opamps are the TL072, JRC4558, JRC4560, NE5532, OP-275, the LM833; there are many others. In your circuit the first opamp has a voltage gain of 21. The TL082 is • High Slew Rate: 13 V/μs pin compatible with the standard LM1558 allowing • Low Supply Current: 3. Some of the cheapies have a pretty low input impedance on the low voltage ranges. the mid portion has a pretty high quiescence. SEMI CONDUCTOR PACKAGE PINOUTS (BOTTOM VIEW) All packages are viewed from below or the rear of the package, with the heatsinking surface upwards, unless otherwise noted. 7 in series. Do the matching of the fets, because the wave will be uniform. A TL072 will, with reduced output swing, it'll swing about 1. The input resistance depends mainly on resistors R1, R2, R3 and R4. When using power supplies higher than 12V, the value of R10 must be raised accordingly. - TL062 is the low power version of the TL082. nothing is ever finished really. 8VRMS off a single ended 9V supply, which is adequate for the purpose. 5mA and 13mA respectively. Compared to most of the standard operational amplifiers, such as the 1458, it shows better noise performance, improved output drive capability and considerably higher small-signal and power bandwidths. bonjour, j'ai besoin d'utiliser un tl072 mais j'en ai pas, est ce qu'il a un équivalent ? j'ai du tl061/71, tl081/2/3, ne5532, lm358, lm741 merci pour. For example, my Carvin bass amp is stuffed with a number of Texas Instruments TL062 or TL072 chips (I forget, same difference though), same as found in active onboard preamps on basses and a number of OD and DS pedals for guitar Most of them are created for clean boost, so when overdrives and distortions use em they're literally overdriven. This feature is not available right now. Low Noise Op Amp - Discrete vs. AGC and S-Meter. 4mA TL062/200uA (low power version of the above) M5218/3mA (just an example of a Boss op amp) NE5532/6mA Bear in mind that the above figures are nominal ones and are for each amp. Take the Inverting and Noninverting OpAmp Voltage Amplifier Circuits (Analog Integrated Circuits) worksheet. An LF353 uses the exact same SPICE model as does the TL082, with an identical. The tin can, lifeless TS-9 reissue now sounds a lot more. Lots of sweet spots to find in between as well. When you replace the chip in a TS-9, which is a TA55558, you'll hear a big difference because that chip isn't optimum for the TS. 5 V to VCC(max) 1. This feature is not available right now. The beauty of TL072 and TL082 is that there are two opamps in one package. both ICs should easily be able to handle up to 20V and that would allow for louder operation, but i think 15V is safe. The 4558 is a pretty low performance part, so just about any newer part you use will likely be an improvement, but there is merit to looking at the specific circuit and using different parts for sockets that drive the outside. On IC1 (TL072), connect the positive side of the led to the "7th pin" and the negative side to ground (be sure to use a resistor, about 1K, in series with the led) I recommend using a 500KC (rev log) pot for speed. Voltage is relative, in the circuit I posted this effect of the split supply is provided by input biasing by producing a virtual ground. Low Noise Op Amp - Discrete vs. Again, this is assuming YOUR DVM has a high enough input impedance. What's the difference? also i was thinking about 2 NE5532 instead, will those also work? do you think this is a better choise?. Sound comparison of 4558D vs TL092 in a BYOC overdrive pedal. Everything on Music From Outer Space is free for non-commercial use. TL062, TL072, TL082 are similar with differences in power, noise, etc. Use an MC34071 single, MC34072 dual or MC34074 quad high speed opamp that also has a minimum supply voltage of only 3V. AGC and S-Meter. com TL072, TL072A, TL072B Low noise JFET dual operational amplifiers. Single Supply Op Amps. Re: Difference between a TL072 and NE5532? Perhaps because the LM358 (and related cousins) has the advantage of being "rail to rail" and works at significantly lower supply voltages then the others? It's a handy little op-amp and I use them a lot, but in no way is it an "audio" op-amp. Otherwise, all these devices are the same and interchangeable with one another. For the A- amplifier, pins 2 and 3 are the inputs, and pin-3 is the output. The beauty of TL072 and TL082 is that there are two opamps in one package. Please feel free to use the information presented on the MFOS website to the fullest extent for non-commercial uses. These days older op-amps in the signal path such as the 709 and 741 are a bit like having leaky waxed paper caps, and can normally be replaced with TL071 or TL081 to good effect; old duals such as the very common 4558 with TL072, TL082, or LM833; and the slow 324 quad with TL074 or TL084 (the LM324 is however ideal for non-signal-path control. I can say that listening to these pedals live, they sound very. They're all mostly the same, but the biggest differences is in the pot values. WAMOD: Neuron/difference rectifier PLEASE READ EVERYTHING BEFORE STARTING This neuron was inspired by a paper on neural computing and is a variation of a typical analogue neuron circuit. The output mode can be set with 3-pin jumper JP1. You can build an automatic gain control AGC for the superhet receiver with only a few additional components. This circuit is perfect pre-amp to amplify the signal from a mono microphone. Dual JFET input Op Amp LF412 LF442 LF353 TL032 TL052 TL062 TL072 TL082 Quad JFET input Op Amp LF347 LF444 TL034 TL054 TL064 TL074 TL084 In many applications, the JFET input Op Amps will be a drop-in substitute for the bi-polar op amps as well. Recall that the ouptut of the 411 only gets within about 1. TL072 OP-AMP IC: Pinout, Pin Configuration, Equivalents, Datasheet. 7 in series. 17 Updated Apr 30, 2015. One of its main functions is to provide a wide range of options for any operational amplifier developed before. A TL072 connected as a unity gain buffer with zero input could have between 3 and 10mV between the two. It consists of a low noise Op-Amp IC and two transistors as main. 4 and the second opamp has a voltage gain of 4. You can build an automatic gain control AGC for the superhet receiver with only a few additional components. I wondered why this didn't work in the simulation but going by the internal TL072 schematic it should. I used a TL082 instead of the TL072 and it seemed to make very little difference in the circuit nor in the sound. The TL072 and TL082 have high-impedance mosfet inputs and offer a high slew rate. TL072,the replacement for TL082's usually had an input whose common mode range did not include ground. You can make your own PCBs from the layouts and drawings we provide or design your own if you prefer. LOW-NOISE JFET-INPUT OPERATIONAL AMPLIFIERS, TL072 datasheet, TL072 circuit, TL072 data sheet : TI, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors. With the manufacture that to you we propose you can make a active filter in order to you lead a loudspeaker of very low frequencies. It is suitable for audio amplifiers with dual op amps like TL072, TL082, NE5532 and the broadband amp NE592 too. Main differences the TL072/82 use DIFET input stages which means that they have a very high input impedance (which can be useful for some circuits). I kept the NE5532's in IC1(boost channel), IC3(FX loop) and IC4(reverb) and just recently settled on the OPA2132 for IC2(normal channel). For the love of god just slap a TL072 or TL082 in there, and save a few bucks in the process. The internal diagrams look the same, but not all values are given. Buy Other Semiconductors & Actives and get the best deals at the lowest prices on eBay! 1-20pcs TL071 TL072 TL074 TL081 TL082 TL084 Low Noise IC J-FET Input Op. The NE5532 draws more current than the TL072. This feature is not available right now. On IC1 (TL072), connect the positive side of the led to the "7th pin" and the negative side to ground (be sure to use a resistor, about 1K, in series with the led) I recommend using a 500KC (rev log) pot for speed. if you happen to build. Mic pre-amp circuit using ic 4558 is a series of mic amplifier based on ic 4558 and also could use other op-amp ic ie TL072 / TL082 / NE5532. 8ma) so no power supply upgrades are needed. In your circuit the first opamp has a voltage gain of 21. With TL072 or TL082 chips, current drawing is about 4. Your circuit uses TL072/82 because they are a good audio performer at a good price. In any case, I would not want to encourage PMI customers to invalidate their warranty by pulling chips out! Let me explain why we use TL072's. One important op amp detail here is powering it via a battery that charges at 29V. LOW-NOISE JFET-INPUT OPERATIONAL AMPLIFIERS, TL072 datasheet, TL072 circuit, TL072 data sheet : TI, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The OCD sounds spectacular with my 101B. They require low supply current yet maintain a large gain bandwidth product and fast slew rate. As for the differences between TL072 and TL082, the specs are nearly the same (including distortion), only differing in input bias current and CMRR (which is worse for TL082). The Input bias and Offset currents is also low. It consists of a low noise Op-Amp IC and two transistors as main. Whcich are the best opamps that can be swaped in place of TL072's without further modification or negative effects? Can the Burr Brown OPA627 drop into the sockets where the TL072's are or will this be a problem? If so, what is the best option? Thanks for your help if you are knowlegable and would like to share. The NE5532 draws more current than the TL072. I wondered why this didn't work in the simulation but going by the internal TL072 schematic it should. Can I use a LM741CN or TL082 opamp in place of a C1458C? so would a TL072/TL082/LF353. Instead, I am now recommending the TI TL072 or TL082 JFET input devices—they cost less than $1 each. Yet another area of difference lies in headroom, discreet implementations offer much higher voltage swing and its not difficult to make it when you have matched pair of transistors available in form of differential pairs and. Replace it with any reasonably decent dual op amp - TL072, TL082, 4558, etc. The CA3140E is a direct replacement for the 741, and the manufacturers designed it with this being the main purpose. Note: The only difference between the two channels of this tone control circuit is on the use of the amplifiers that are present within the integrated circuits. I used a potentiometer as a voltage divider and it seems to work. The NE5532 draws more current than the TL072. It was the first product sold by MXR with great success. It is an integrated circuit. table difference. 4 and the second opamp has a voltage gain of 4. It can be used as a complex audio waveshaper, gate or pulse generator, CV shaper or to generally fuck things up. Voltage is relative, in the circuit I posted this effect of the split supply is provided by input biasing by producing a virtual ground. TL072 Datasheet, TL072 PDF, TL072 Data sheet, TL072 manual, TL072 pdf, TL072, datenblatt, Electronics TL072, alldatasheet, free, datasheet, Datasheets, data sheet. TL082 Wide Bandwidth Dual JFET Input Operational Amplifier General Description These devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET II™ technology). TL082 or any other general purpose opamps can also be used. What is important is the minimum voltage required to drive the amplifier, in the case of the TL082 this is =/- 5V. Quite a difference in value but as I said it works well. Your circuit uses TL072/82 because they are a good audio performer at a good price. Mad Professor Deep Blue Delay Slightly modified to give you an overall volume control but if you want the standard unit, just swap the 5K1 Volume 1 resistor for a 12K and solder between IC1 pins 6 and 7. The TL072 and TL082 have high-impedance mosfet inputs and offer a high slew rate. On IC1 (TL072), connect the positive side of the led to the "7th pin" and the negative side to ground (be sure to use a resistor, about 1K, in series with the led) I recommend using a 500KC (rev log) pot for speed. Ok, I'm an op-amp novice, so be gentle. ORDER CODE. But the NE5532 is a monster in comparison. 5mA Prices in 100 unit quantities TL082 =. Mic pre-amp circuit using ic 4558 is a series of mic amplifier based on ic 4558 and also could use other op-amp ic ie TL072 / TL082 / NE5532. Yet another area of difference lies in headroom, discreet implementations offer much higher voltage swing and its not difficult to make it when you have matched pair of transistors available in form of differential pairs and. These are used in a lot of music/synth gear (esp the 72). The TL072 doen't meet its spec's when its supply voltage is lower than 7V. It is an integrated circuit. The TL072, with its JFET inputs, was used wherever its negligible input bias currents and low cost were important. php on line 143 Deprecated: Function create. Through Hole Operational Amplifiers - Op Amps are available at Mouser Electronics. I run the various circuits from a +/-12V supply with a third ground connection and have tried using TL072 and TL082 opamps but to no avail. When you replace the chip in a TS-9, which is a TA55558, you'll hear a big difference because that chip isn't optimum for the TS. 2 tl071, tl071a, tl071b tl072, tl072a, tl072b, tl074, tl074a, tl074b, tl072m, tl074m slos080n -september 1978-revised july 2017 www. i modified it to use a 9V battery, but could probably still use some work in terms of efficiency… as most things. If we have R1 = R2 = R3 = R4 = 1MOhm the voltage gain is +1. The low harmonic distortion and low noise make the TL072 ideally suited for high-fidelity and audio preamplifier applications. Do the matching of the fets, because the wave will be uniform. If we have R1 = R2 = 1MOhm and R3 = R4=10MOhm the voltage gain is +10. I will definitely be etching a board for this one !. Current guitar album 'I Live On The Outsi. Wonderful sounding pedal, fully adjustable from a low gain straight through to a higher, crunchy type distortion. The Mike Matthews Dirt Road Special's preamplifier is built around the 4558. One important op amp detail here is powering it via a battery that charges at 29V. 5-digit meters typically use an LM399 reference internally, so when using the 10V range to measure the 7V output of an LM399 directly, one must ask if you are measuring the drift of the LM399. Re: Difference between a TL072 and NE5532? Perhaps because the LM358 (and related cousins) has the advantage of being "rail to rail" and works at significantly lower supply voltages then the others? It's a handy little op-amp and I use them a lot, but in no way is it an "audio" op-amp. both ICs should easily be able to handle up to 20V and that would allow for louder operation, but i think 15V is safe. 2 to 5nA TL071 =. So I'm wondering how this affects the tone/output/etc. There is a minor difference in that pin 8 is for the strobe function, which controls the output, however, for basic op amp circuits it is not used. 5k, the TL072 is quieter. Re: confusion regarding the TL072, TL082 and the 4580D. For example, my Carvin bass amp is stuffed with a number of Texas Instruments TL062 or TL072 chips (I forget, same difference though), same as found in active onboard preamps on basses and a number of OD and DS pedals for guitar Most of them are created for clean boost, so when overdrives and distortions use em they're literally overdriven. Burr Brown OPA627AP Op Amp. Having multiple LM399 references can be handy, as measuring the difference between two references allows you to use a more sensitive range your meter. Everything on Music From Outer Space is free for non-commercial use. It is an integrated circuit. So: the TL062 uses less power, but is more noisy than the TL072. If you want to swap out TL072 opamps, the BB OPA1642 and AD4075 draw the same current (1. They are from the same family, and maybe even made using the same process. On the TL082 op-amp, for example, this occurs when the common-mode input voltage comes within about 0. The Input bias and Offset currents is also low. com SNOSBW5C – APRIL 1998– REVISED APRIL 2013 TL082 Wide Bandwidth Dual JFET Input Operational Amplifier Check for Samples: TL082-N 1FEATURES DESCRIPTION These devices are low cost, high speed, dual JFET 23• Internally Trimmed Offset Voltage: 15 mV input operational amplifiers with an internally trimmed. June 2014 DocID2298 Rev 8 1/16 This is information on a product in full production. Then I tried a few others and found, not surprisingly, that the chips in this same series (TL072, TL082, etc. Having used a Net Audio modified Quad 405-2 for the last twelve months complete with their excellent Dual Mono Power Supply, I was interested to learn that there was a superior op amp available for each of the Quad 405's amplifier boards than the one Net Audio upgrade as standard, the Burr Brown OPA604AP Op Amp. 5mA Prices in 100 unit quantities TL082 =. Compared to most of the standard operational amplifiers, such as the 1458, it shows better noise performance, improved output drive capability and considerably higher small-signal and power bandwidths. com New Product Announcement TL072 Low noise and TL082 General purpose Dual Op Amps Product Family Issue Number | 001 31 July 2009 Part number Number of channels Supply voltage range Supply current Input Offset Voltage (typ) Input Bias Current (typ) Input Common Mode Voltage range Rail-rail Output current (source) Output current (sink) Ambient temperature range Packages. use the following search parameters to narrow your results: subreddit:subreddit find submissions in "subreddit" author:username find submissions by "username" site:example. The Input bias and Offset currents is also low. Wonderful sounding pedal, fully adjustable from a low gain straight through to a higher, crunchy type distortion. In your circuit the first opamp has a voltage gain of 21. See circuit schematic of mic pre amplifier :. I used a TL082 instead of the TL072 and it seemed to make very little difference in the circuit nor in the sound. It will, in most cases, also work with a TL062 or TL082, though maybe not reach all specified values. Then I tried a few others and found, not surprisingly, that the chips in this same series (TL072, TL082, etc. TL082 Wide Bandwidth Dual JFET Input Operational Amplifier GeneralDescription These devices are low cost high speed dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET IITM technology) They require low supply current yet maintain a large gain bandwidth product and fast. For instance, the 411 is no longer a viable choice for an op-amp. 8ma) so no power supply upgrades are needed. On the TL082 op-amp, for example, this occurs when the common-mode input voltage comes within about 0. (ACTIVE) Dual High Slew Rate JFET-Input Operational Amplifier. I wondered why this didn't work in the simulation but going by the internal TL072 schematic it should. I doubt anybody could tell tue difference in a blind test, sounds the same to me!. The TL082 is the general purpose version, the TL072 is the low noise version (prefered in audio applications) and the TL062 is the low power version. As for the differences between TL072 and TL082, the specs are nearly the same (including distortion), only differing in input bias current and CMRR (which is worse for TL082). Whcich are the best opamps that can be swaped in place of TL072's without further modification or negative effects? Can the Burr Brown OPA627 drop into the sockets where the TL072's are or will this be a problem? If so, what is the best option? Thanks for your help if you are knowlegable and would like to share. We can use dual operational amplifiers as TL072, TL082, TL062 or similar. Make one op-amp into a unity-gain non-inverting buffer, and the second. 5mA and 13mA respectively. 4 and the second opamp has a voltage gain of 4. With TL072 or TL082 chips, current drawing is about 4. As was mentioned earlier, it depends a lot on the circuit you're putting it in and how it was designed. I tried TL072, TL082, 1458, RC4559P, TLV2772CP, OPA2132 and NE5532. The tin can, lifeless TS-9 reissue now sounds a lot more. 2 to 5nA TL071 =. Please feel free to use the information presented on the MFOS website to the fullest extent for non-commercial uses. While changing op amps may make some difference, it is only one part of the puzzle. The 4558 is a pretty low performance part, so just about any newer part you use will likely be an improvement, but there is merit to looking at the specific circuit and using different parts for sockets that drive the outside. In your circuit the first opamp has a voltage gain of 21. Instead, I am now recommending the TI TL072 or TL082 JFET input devices—they cost less than $1 each. The Phase 90 is a phaser guitar pedal designed by Keith Barr in 1974. From memory the 5532 and TL072 mentioned will drop in and line up with the 4558 pins. I've not dug into the separate data sheets later in the brochure. i know a guy that as putted in a TL072 for IC1 and a TL062 for IC2. both ICs should easily be able to handle up to 20V and that would allow for louder operation, but i think 15V is safe. TL072 were sold in later years, and create less circuit noise than TL082. Basically a TL072 is two TL071's in one IC. Can I use a LM741CN or TL082 opamp in place of a C1458C? so would a TL072/TL082/LF353. Lots of sweet spots to find in between as well. Welcome to Perky's Analog Gear Demos. It sounds to me like you have a grounding issue somewhere. Ok, I'm an op-amp novice, so be gentle. The application that to you we propose is a simple filter of region that limits the acoustic region (20-20000Hz) in the region 20-100Hz. 5 V to VCC(max) 1. New user coupon on orders over US $4. I kept the NE5532's in IC1(boost channel), IC3(FX loop) and IC4(reverb) and just recently settled on the OPA2132 for IC2(normal channel). I wondered why this didn't work in the simulation but going by the internal TL072 schematic it should. TL072,the replacement for TL082's usually had an input whose common mode range did not include ground. If we have R1 = R2 = 1MOhm and R3 = R4=10MOhm the voltage gain is +10. From memory the 5532 and TL072 mentioned will drop in and line up with the 4558 pins. It will, in most cases, also work with a TL062 or TL082, though maybe not reach all specified values. The design is a standard non-inverting design, the input is applied to the non-inverting input of the op-amp which is pin 3 in most cases. So: the TL062 uses less power, but is more noisy than the TL072. Can I use a LM741CN or TL082 opamp in place of a C1458C? so would a TL072/TL082/LF353. 8mA TL071 = 2. So I'm wondering how this affects the tone/output/etc. equivalent for TL 082 & AD 633 TL072 is a better-than replacement for the TL082. As already mentioned, the 71 is a single op amp and the 72 is a dual op amp. These low cost JFET input operational amplifiers combine two state­of­the­art analog technologies on a single monolithic integrated circuit. WAMOD: Neuron/difference rectifier PLEASE READ EVERYTHING BEFORE STARTING This neuron was inspired by a paper on neural computing and is a variation of a typical analogue neuron circuit. I'm finding out of the bunch of duals the LME parts are the less objectionable bipolars while the the AD 8512 is the smoothest, most natural fet opamp. I run the various circuits from a +/-12V supply with a third ground connection and have tried using TL072 and TL082 opamps but to no avail. 7 for a total gain of 100. Two pretty simple non-inverting stages with two feedback paths each - one being a resistor only and the other being "frequency selective" for implementation of the tone and bite control. By using two potentiometers I found that R130 kohm has to be changed to 100 kohms and R22 kohms has to be changed to R10+R4. With the manufacture that to you we propose you can make a active filter in order to you lead a loudspeaker of very low frequencies. The circuit is tested and work normally. You'll have to consider smoothing the PWM output through a low pass filter - the TL072/TL082 has two op-amps so you can use one for colour A and the other for colour B. My philosophy on op-amps is that in most circuits you want them to be as close to an "ideal" op-amp as possible, and not color the sound themselves in any way - only providing perfectly linear voltage gain. With TL072 or TL082 chips, current drawing is about 4. The low harmonic distortion and low noise make the TL072 ideally suited for high-fidelity and audio preamplifier applications. 33 TL071 =. These low cost JFET input operational amplifiers combine two state­of­the­art analog technologies on a single monolithic integrated circuit. Figure 1 shows the schematic of a simple circuit that is capable of "driving" a thermistor. 5 V to VCC(max) 1. This is a measure of the typical voltage difference that may exist between the inputs when the first Rule is applied. It is suitable for audio amplifiers with dual op amps like TL072, TL082, NE5532 and the broadband amp NE592 too. And a transistor C945 as a buffer circuit and other components of resistors and capacitors. I tried TL072, TL082, 1458, RC4559P, TLV2772CP, OPA2132 and NE5532. TL074 circuit schematic TL074 Features. My philosophy on op-amps is that in most circuits you want them to be as close to an "ideal" op-amp as possible, and not color the sound themselves in any way - only providing perfectly linear voltage gain. Recall that the ouptut of the 411 only gets within about 1. Your circuit uses TL072/82 because they are a good audio performer at a good price. It sounds to me like you have a grounding issue somewhere. Therefore if the source impedance is very low (spec'd at 20 ohms), the NE5532 is 3 times quieter. TL072 were sold in later years, and create less circuit noise than TL082. 100 nsec for the 07X for a 20 mV input with a 2K load and 100 pF. But that should not matter in this case. when you listen to one, switch op amps and then listen to the other, the elapsed time affects your recollection of the sound. The Mike Matthews Dirt Road Special's preamplifier is built around the 4558. If your total chain is not too noisy, you'll hear a difference. You can see that the cheapo Boss stock chip is a "hog" in comparison to the old TL072. The design is a standard non-inverting design, the input is applied to the non-inverting input of the op-amp which is pin 3 in most cases. Triangle wave at the colector of 2N2222 is quite a lot improved after tunning the transistor biasing. For the JFET, any N-Channel JFET with the same pinout should work - like 2N5457, 2N5458, J112 and so on. I mostly followed the layout but did move a few things around. Whcich are the best opamps that can be swaped in place of TL072's without further modification or negative effects? Can the Burr Brown OPA627 drop into the sockets where the TL072's are or will this be a problem? If so, what is the best option? Thanks for your help if you are knowlegable and would like to share. - TL072 is the low noise version of the TL082. I can say that listening to these pedals live, they sound very. You'll have to consider smoothing the PWM output through a low pass filter - the TL072/TL082 has two op-amps so you can use one for colour A and the other for colour B. Diferenciando entre KIA4558, 4560, 4565, 5218 y TL072 (amp. Replace it with any reasonably decent dual op amp - TL072, TL082, 4558, etc. Or the TLV9062 or the TLV9002 for low voltage. 8ma) so no power supply upgrades are needed. Thanks again for your post, John. Connect the positive, negative, and output terminals of the op amp to the rest of the circuit. Again, this is assuming YOUR DVM has a high enough input impedance.