Class AB stereo line driver for audio and instrumentation
The SSM6322ACPZ-R7 is a Class AB stereo amplifier from Analog Devices, delivering two channels of linear output in a compact 24-LFCSP (4x4) package. It operates from a dual supply rail of ±3V to 6V, which covers common audio and signal-conditioning voltage pairs. The part includes a depop feature to reduce audible clicks during power-up or mute transitions — useful in headphone drivers, preamplifier stages, and line-output buffers where pop-free startup matters.
Supply range and temperature grade — fit for industrial audio
Rated for -40°C to 85°C ambient, the SSM6322ACPZ-R7 suits outdoor telecom equipment, factory-floor audio annunciators, and automotive cabin infotainment modules that see temperature swings. The ±3V to 6V supply range lets it run from common ±5V or ±3.3V rails without an extra regulator. Compared to a Class D alternative like the SSM3582ACPZ-R7, this Class AB part trades higher quiescent dissipation for lower output noise and simpler EMI management — the right choice when signal fidelity trumps efficiency.
Package and mounting — 24-LFCSP with exposed pad
Surface-mount in a 24-LFCSP (4x4 mm) exposed-pad package. The exposed pad must be soldered to a thermal land on the PCB — it's the primary heat path and also provides a low-inductance ground return for the output stage.