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Low Power Amplifiers - STMicroelectronics
https://www.st.com/en/audio-ics/low-power-amplifiers.html
ST’s low-power class AB and filterless class D amplifiers offer high-quality audio performance, ease of use, robustness, BOM cost-savings, and are available in space-saving packages. Featured Products A22H165: available either I2C controlled or in u-less config Dedicated to high audio performance Products Amplifiers and Comparators Audio ICs
Simple Low-Power Audio Amplifier - Electronics For You
https://www.electronicsforu.com/electronics-projects/hardware-diy/simple-low-power-audio-amplifier
The amplifier section is built around TL072 (IC3) and a low-power amplifier LM386. The op-amp A1 of IC3 operates as a low-noise preamplifier. Capacitor C8 is used in order to pass low frequency. The op-amp A2 of IC3 operates as a low-pass filter. For changing the cut-off frequency, you have to change the values of capacitors C11 and C12.
Low-Power Op-Amps - Operational Amplifiers ...
https://www.st.com/en/amplifiers-and-comparators/low-power-op-amps-lt1-ma.html
The TSU111 (single-version channel) TSU112 (dual-version channel) and TSU114 (quad-version channel) operational amplifiers offer an ultra-low power consumption per channel of 900 nA (typical) and 1.2 µA (maximum) when supplied by 3.3 V.
Simple Low Audio Power Amplifier Circuit with Working
https://www.efxkits.us/simple-low-audio-power-amplifier/
LM386 IC is a power amplifier used to amplify the small audio signals with the supply of low voltages. Even though internally the gain of IC LM386 is set at 20 but, by adding a resistor and a capacitor at pins 1 and 8 of the IC, we can raise this gain up to 10 times higher than internal gain i.e., up to 200. IC LM386
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