ZHCSLS8 August 2020 DRV5825P
PRODUCTION DATA
DRV5825P DSP can provide advanced audio processing functions, such as SRC (sample rate convertor), Input Mixer, 15 EQ bands, volume control, Smart Piezo Drive Algorithm, 2 Post EQs, Full band AGL, Clipper and Output crossbar, Level meter.
Piezo speaker behaves like a capcictor with low impedance at high frequency which means high frequency current is easier to trigger amplifier over current protection. Capacitive load also causes high Q to LC filter. Piezo drive algorithm do adaptive current/voltage limitation based on output filter's frequency response and piezo impedance. The current/voltage limiter only been triggered with large input level which means this algorithm enhance the dynamic range keep the original sound quality.