Class D stereo amplifier for medium-power audio
The Maxim Integrated MAX9704ETJ+ is a Class D stereo audio amplifier delivering 16W per channel into a 16Ω load from a 10V to 25V supply. Its differential inputs and integrated mute and shutdown functions simplify system-level audio control. The 32-TQFN (7x7) exposed-pad package sits on a standard surface-mount footprint and requires a thermal via pattern under the pad for heat sinking into the PCB copper plane.
16W per channel — what the output rating means for your speaker selection
The 16W x 2 into 16Ω rating is the continuous output power at 10% THD+N. A 16Ω speaker load pulls about 1A peak per channel at full output.
Industrial temperature grade and environment fit
Rated for -40°C to 85°C ambient, this amplifier suits outdoor audio paging systems, automotive cabin audio (non-AEC-Q100, so not for under-hood or safety-critical paths), and industrial panel-mount speakers. The Class D architecture keeps heat dissipation low enough that the exposed pad can manage thermal loads without forced airflow at typical music program levels.
