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Author Topic: OP AMP for audio.  (Read 1704 times)
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pbraida
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« on: June 12, 2018, 12:30:35 12:30 »

Hi, everyone.

I need recommendations for an audio operational amplifier, that works with a single power supply 5.0 Volts.
The idea is change the wave as little as possible.

Thanks for any help.

Pedro.
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Xwing
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« Reply #1 on: June 12, 2018, 12:39:26 12:39 »

TI OPA301, good opamp for audio applications.

FEATURES
High Bandwidth: 150MHz
16-Bit Settling in 150ns
Low Noise: 3nV/√Hz
Low Distortion: 0.003%
Low Power: 9.5mA (typ) on 5.5V
Shutdown to 5A
Unity-Gain Stable
Excellent Output Swing:
(V+) − 100mV to (V−) + 100mV
Single Supply: +2.7V to +5.5V
Tiny Packages: MSOP and SOT23
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crahak
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« Reply #2 on: June 12, 2018, 04:39:45 16:39 »

A plain old, typical, industry-standard NE5532 can work, much like a lot of other opamps, but it all comes down to what kind of circuit and application you have in mind.
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LabVIEWguru
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« Reply #3 on: June 12, 2018, 05:58:00 17:58 »

Get a Linear Tech databook. They have opamps in there that border on science fiction.
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PICker
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« Reply #4 on: June 13, 2018, 12:43:15 00:43 »

Try also with TI products:
http://www.ti.com/amplifier-circuit/op-amps/audio/products.html#
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pbraida
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« Reply #5 on: June 13, 2018, 04:15:24 16:15 »

Get a Linear Tech databook. They have opamps in there that border on science fiction.
A plain old, typical, industry-standard NE5532 can work, much like a lot of other opamps, but it all comes down to what kind of circuit and application you have in mind.
Hi, this is for a Spektrum Analyser using a FFT Transform.
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Checksum8
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« Reply #6 on: June 13, 2018, 06:43:34 18:43 »

The MCP602x family are good for this type application.

http://ww1.microchip.com/downloads/en/DeviceDoc/20001685E.pdf
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techneo
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« Reply #7 on: September 01, 2018, 02:58:07 02:58 »

Quite many ...

1. Analog Devices

  SSM3525  (Input = Digital I2S)
  SSM2306 (For 2 differential)


2. TI

   LM4860  (1 W output)
   TAS 2559 (Digital Input)

3. Aliexpress- 

 TDA2522

https://www.aliexpress.com/store/product/TDA2822M-Mini-Mono-Audio-Amplifier-Board-2W-BTL-Amplifier-Module-Volume-Adjustable-Single-Power-3V-5V/1829717_32762759626.html?spm=2114.search0104.3.15.73052d05yc6KRD&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10068_10059_10696_100031_10084_10083_10103_451_452_10618_10307_5014715_5014615,searchweb201603_2,ppcSwitch_2&algo_expid=3355318a-b444-46f8-adcf-6525bf29eff2-2&algo_pvid=3355318a-b444-46f8-adcf-6525bf29eff2&priceBeautifyAB=0


  PAM8403

https://www.aliexpress.com/store/product/PAM8403-5V-Power-Audio-Amplifier-Board-2-Channel-3W-W-Volume-Control-USB-Power/1757110_32878308762.html?spm=2114.search0104.3.22.73052d05yc6KRD&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10068_10059_10696_100031_10084_10083_10103_451_452_10618_10307_5014715_5014615,searchweb201603_2,ppcSwitch_2&algo_expid=3355318a-b444-46f8-adcf-6525bf29eff2-3&algo_pvid=3355318a-b444-46f8-adcf-6525bf29eff2&priceBeautifyAB=0


-TechNeo
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bobcat1
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« Reply #8 on: September 01, 2018, 06:04:49 06:04 »

Hi

Ti OPA1602 dual audio op amp specially for audio design

I have design an audio product with this amp

All the best

Bobi
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kreutz
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« Reply #9 on: September 01, 2018, 08:21:39 08:21 »

Check https://tangentsoft.net/audio/opamps.html for ideas. Also https://forum.allaboutcircuits.com/threads/whats-the-absolute-best-opamp-for-audio-purposes.62897/
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ReefGuru
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« Reply #10 on: October 15, 2018, 11:22:03 11:22 »

I also like the Burr-Brown OPA series - very solid, at least back when I played with such things.
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