
Cirrus Logic
General Description
The CS4412A is a high-efficiency power stage for digital Class-D amplifiers designed to input PWM signals from a modulator such as the CS4525. The power stage outputs can be configured as four half-bridge channels, two half-bridge channels and one full-bridge channel, two full-bridge channels, or one parallel full-bridge channel.
FEATUREs
✦ Configurable Outputs (10% THD+N)
– 2 x 15 W into 8 Ω, Full-Bridge
– 1 x 30 W into 4 Ω, Parallel Full-Bridge
– 4 x 7.5 W into 4 Ω, Half-Bridge
– 2 x 7.5 W into 4 Ω, Half-Bridge + 1 x 15 W
into 8 Ω, Full-Bridge
✦ Space-Efficient Thermally-Enhanced QFN
– No External Heat Sink Required
✦ > 100 dB Dynamic Range - System Level
✦ < 0.1% THD+N @ 1 W - System Level
✦ Built-In Protection with Error Reporting
– Over-Current
– Thermal Warning and Overload
– Under-Voltage
✦ +8 V to +18 V High Voltage Supply
✦ PWM Popguard® Technology for Quiet Startup
✦ No Bootstrap Required
✦ Low Quiescent Current
✦ Low Power Standby Mode
Common Applications
✦ Integrated Digital Televisions
✦ Portable Media Player Docking Stations
✦ Mini/Micro Shelf Systems
✦ Powered Desktop Speakers