The MAX9727 quad audio line driver with 3VRMS output is
ideal for portable audio devices where board space and
cost is at a premium. The device uses Maxim's
DirectDrive™ architecture that produces a ground-referenced
output from a single supply, eliminating the need
for large DC-blocking capacitors and saving cost, board
space, and component height. A high 100dB PSRR and
low 0.0005% THD+N ensures clean, low-distortion amplification
of the audio signal. Each MAX9727 amplifier can
provide 3VRMS to a 1k load with less than 0.003% THD+N while operating from a single +5V supply. Each
MAX9727 amplifier can provide 2VRMS to a 1k load with less than 0.003% THD+N while operating from a single +3.3V supply.
A shutdown input disables the amplifiers and reduces
quiescent current consumption to less than 100nA. The
MAX9727 features Maxim's comprehensive click-and-pop
suppression circuitry that reduces audible clicks and
pops during startup and shutdown.
The MAX9727 operates from a single 2.7V to 5.5V supply,
consumes only 3mA of supply current per channel,
and is specified over the -40°C to +85°C extended temperature
range.
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