CXA3785R Datasheet, PDF (1/47 Pages) Sony Corporation – Audio Driver for TV

Audio Driver for TV
CXA3785R
Description
The CXA3785R is an integrated audio sub-system designed for TV audio application. It has a stereo
headphone amplifier, and 4 stereo amplifiers. It also integrated gain control, mute control, input selector, and
voltage detectors. Each settable value is controlled through I²C compatible interface.
Features
‹ 4 stereo audio amplifiers (HP, AMP1, AMP2, AMP3) with programmable gain control
‹ Cap less headphone amplifier
‹ 2 amplifiers (HP and AMP1) with 3rd order LPF for PWM input
‹ AMP3 with 2 stereo input multiplexer and LL/RR output
‹ AMP4 for Digital Media Port (DMP) with differential input
‹ 4 voltage detection circuits for VUNREG (un-regulated power supply voltage), REGAUD (audio amp power
supply voltage), REG33 (DSP power supply voltage) and speaker output
‹ 3 muting circuits with external mute control and buffer transistor
‹ REGAUD output for supply voltage of 4 stereo audio amplifiers and DMP
‹ REG33 output for supply voltage of DSP and PWM output stage
‹ I²C control
‹ Package size: 64pin LQFP (Body size: 10mm × 10mm)
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license
by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating
the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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