XS9971 power amplifier board scheme, compatible with NS4165,HAA2018A,MIX2018A,LTK5128,8871, etc

Xs9971 is a low EMI, filter free, class AB / D optional audio power amplifier. At 5.5V working voltage, the maximum driving power is 5.5W (VDD = 5V, 2 Ω BTL load, thd < 10%), and the total harmonic distortion noise in the audio range is less than 1% (20Hz ~ 20kHz); the application circuit of xs9971 is simple, requiring only a few peripheral devices; the output of xs9971 does not need external coupling capacitor or lifting capacitor and buffer network;

The xs9971 adopts esop8 package, which is especially suitable for portable systems with small volume and weight; the xs9971 can enter the shutdown mode through control, so as to reduce power consumption; the xs9971 has an automatic shutdown protection mechanism for overheating; the xs9971 works stably, and the voltage gain of the amplifier can be adjusted by configuring peripheral resistance, which is convenient for application.

Ultra low EMI, high efficiency, excellent sound quality, class AB / D switching, single channel, VDD = 5.5V, RL = 2 Ω, Po = 5.5W, thd + n ≤ 10%, VDD = 5V, RL = 4 Ω, Po = 3W, thd + n ≤ 10%, wide working voltage range of 2.5v-7v, excellent pop sound suppression during power on and power off