TFA9881
Description
The TFA9881 is a mono, filter-free class-D audio amplifier in a 9-bump WLCSP (Wafer Level Chip-Size Package) with a 400 m pitch. The digital input interface is an over-sampled Pulse Density Modulated (PDM) bit stream.
Key Features
- Small outline WLCSP9 package: 1.3 1.3 0.6 mm
- Wide supply voltage range (fully operational from 2.5 V to 5.5 V)
- High efficiency (90 %, 4 /20 H load) and low power dissipation
- Output noise voltage: 24 V (A-weighted)
- Signal-to-noise ratio: 103 dB (VDDP = 5 V, A-weighted)
- Fully short-circuit proof across load and to supply lines
- Current limiting to avoid audio holes
- Thermally protected
- Undervoltage and overvoltage protection
- High-pass filter for DC blocking
