This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. By continuing to use this site, you are consenting to our use of cookies. Forums New posts Search forums. Articles New articles New comments Series Search articles. Log in Register. Search titles only. Search Advanced search…. New posts. Search forums. Log in. LM vs OPA vs [? JavaScript is disabled.

For a better experience, please enable JavaScript in your browser before proceeding. Thread starter Acke Start date Dec 15, Post 1 of 4. Joined Nov 25, Messages Reaction score Joined Nov 25, Posts Likes Im interested in op amp rolling for my amp since its not expensive to try out and I was surprised to find a lot of variation between them, the amp has a very simple circuit so my results could be more siginificant than with other amps. This is also used in o2 amp and it sounds like this op amp defines the analytical sound of that amp, I will have to try the LM in the o2.

NE was the most coloured sounding, seemed to hide a lot of details but had a fairly musical, mid-focused sound, could sound uncontrolled in very intense tracks I am curious to see if there is more room to improve with other op amps?

So far I read the OPA as an upgrade to the LM but its quite expensive, has anyone experience with this op amp or do you know any op amps that you consider an upgrade from the LM? Last edited: Dec 15, Latest Projects Education. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. OPA replacement for stereo headphone. Thread starter abc77 Start date Aug 1, Search Forums New Posts. Thread Starter abc77 Joined May 10, Hi, I am trying audio circuit which has OPA Can this amplifier be replaced with LF?

I don't know what to look for replacement.

OPA2134PA - OPA2134 Audio Dual Op-Amp

I don't have OPA and the market is short of it. I found LF which seems closest. Scroll to continue with content. GopherT Joined Nov 23, 8, PeteHL Joined Dec 17, The spec sheet says 35 mA per channel, so this should work alright with higher impedance headphones. You may understand this better than me, but would seem to suggest that this op amp cannot deliver much more than 5 mA without difficulty.

Last edited: Aug 3, So you were right that this amplifier is not actual audio amplifier. You must log in or register to reply here.

General Electronics Chat 2 Oct 31, Which chip is better for preamp, Ad, opa, or ne? You May Also Like. Continue to site.

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Apr 10, Mar 20, Aug 18, Replacing opa with opa? Jan 11, Oct 31, April 11, February 29, February 27, February 3, February 2, November 5, March 26, January 8, February 12, February 5, November 24, November 19, February 18, February 6, January 25, January 16, January 15, February 4, February 1, January 26, January 1, October 18, August 19, January 28, October 29, February 21, March 27, January 12, September 6, August 6, January 7, April 8, March 16, January 5, May 3, PCMA has differential current outputs and therefore requires some analog circuitry.

Most of the circuits, including the TI reference design in the datasheet, use operational amplifiers as it is the easiest approach to excellent performance.Forums New posts Search forums. What's new New posts New profile posts Latest activity. Members Current visitors New profile posts Search profile posts. Log in Register. Search titles only. Search Advanced search…. New posts. Search forums. Log in. For a better experience, please enable JavaScript in your browser before proceeding.

Thread starter Cucurbitam0schata Start date Feb 19, Cucurbitam0schata Member. Just finished soldering the jacks and 9V plug, ready to box up and drop in my ICs TL, JRC, pretty much any dual opamp will work. The OPA seems overkill in that circuit anyway. Running that with the PT seems rather asymmetrical. Hell, yeah! Sorry for the delayI was noodling with the Magnetron for the last hour!

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TL for the win! Who needs a fancy pants OPA, anyways? Forum Hive Mind strikes again! Fired up real nice once that IC was in place. The wind was really outta my sails, and you guys saved it. Another victory for the community! Not surprised, but always impressed, comrades.

Over and out. Rock and roll!

opa2134

Gordo Active member. Chalk up one for the good guys! Barry Well-known member.The OPx13 family is unity gain stable and has a typical gain bandwidth product of 3. Noise density is a very low 4.

Input offset voltage is guaranteed and offset drift is guaranteed to be less than 0. Input common-mode range includes the negative supply and to within 1 V of the positive supply over the full supply range.

Phase reversal protection is designed into the OPx13 family for cases where input voltage range is exceeded. Output voltage swings also include the negative supply and go to within 1 V of the positive rail. Digital scales and other strain gage applications benefit from the very low noise and low drift of the OPx13 family. Other applications include use as a buffer or amplifier for both analog-to-digital ADC and digital-to-analog DAC sigma-delta converters.

Often these converters have high resolutions requiring the lowest noise amplifier to utilize their full potential. Many of these converters operate in either single-supply or low-supply voltage systems, and attaining the greater signal swing possible increases system performance. The product is appropriate for new designs but newer alternatives may exist. The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications.

These boards are all RoHs compliant. See references below on what board to order by lead count and package. Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior.

Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current — to determine the best filter design for your requirements. Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode.

Select a photodiode from the library included in the tool, or enter custom photodiode specifications.

opa2134

Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain. ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

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Log in Register. Search titles only. Search Advanced search…. New posts. Search forums. Log in. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Thread starter sunneebear Start date Jul 20, Post 1 of 5.

opa2134

Joined Jul 29, Messages 1, Reaction score Joined Jul 29, Posts 1, Likes I am putting this in the Amp section because this is a upgrade for my amp. Since there seems to be no reviews of Burson opamps, here goes. The Burson Dual OP Amp is a discrete design, made with transistors and resistors mounted on a small circuit board. It is not an IC. I have read somewhere that Audio-GD even made the first generation Burson opamps. Burson even has a headphone amp, the HA The Burson is better.

Same cable was used for all headphones for this test. Only the HD is moded for sound. The HFI has been dedioded. Others only have the cable mod.Posted: Tue Dec 08, pm. Hi forum I'm playing around with some simple headphone amps again with NE vs. OPA OP amps.

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I've studied around in different forums and found information about differences between the resistor value going to ground. For one of the OP amp it's optimal with 1k and for the other one it's 2k. Sadly i've found controversial and opposite information, then i just have to ask you guys, which one is which? Another isue, this time i've added the TLE virtual ground voltage rail splitter in the PSU, It's a really nice little component, which i can recommend.

Hi, For typical use either will do and in reality the value of the resistor can vary over a wide range. Gain is about 40 and 55 db with the RIAA network in the feed back loop. The resulting preamp is very quiet and performs with out any issues. I also use the OPA as a single gain stage that will drive headphones with a K pot on the non-inverting side and a fixed 10K on the inverting one with a K feed back resistor.

The one area that I feel you might look into is a higher DC voltage. IMO the choice of either IC is not a big factor as both are quite suitable for audio. The value of the inverting input to ground resistor is not critical. My experience has been than anything from 47R to about 1meg is OK.

For very low values however I think that making it roughly equal to the one on the inverting side seems to be advisable. My budget phono preamp deviates from this obviously, but I can not detect any problems with how it performs. Some individuals say that the distortion level is higher because of the choice of resistor values Good listening Bruce.

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Posted: Wed Dec 09, am. I use two 4. Posted: Sat Dec 12, am. G'day all, an interesting thread. If anything, it has a more 'neutral' sound than the possibly slightly euphonic OPA, but its performance is very reliable and dependable and of a very high standard, which possibly explains its long standing use in 'professional' audio gear.

OPA2134 replacement for stereo headphone

Regards, Felix. Posted: Sat Dec 12, pm. For single 9V battery devices this is ideal.

opa2134

Posted: Sun Dec 13, am. Listened to them both.

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G'day all, just an academic comment re the NE, reading the various manufacturers comments it seems that the NE was never really designed as a 'hi fi' chip, but more for professional audio and high performance line driver applications.

Perhaps it is a 'fortunate accident' that it is also very eminently suitable for true 'hi fi' applications as well. Posted: Sun Dec 13, pm. Page 1 of 1. Previous topic Next topic. Post subject: NE vs.

Post subject: Re: NE vs.


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