Rohm Semiconductor BD3811K1

Description
BD3811K1 and BD3818KS are 5.1ch sound processors with a builtin Mode Selector/Input Selector.
Functions including 6ch Volume, Gain Amp, Bass, Treble, Mixing (BD3818KS), Dynamic Bass Boost (BD3818KS), and Bass Boost (BD3811K1) are integrated into a single chip.

Features
Independent 6 channels for Master Volume (0 to 103dB, 1dB/Step, MUTE, BD3811K1) (0 to 95dB 1dB/Step, MUTE, BD3818KS).
Low current consumption design achieved by adopting the BICMOS process.
Maximum output voltage (BD3818KS): 4.3Vrms (Vcc=7V, VEE=7V, RL=10kΩ).
Maximum output voltage (BD3811K1): 4.2Vrms (Vcc=7V, VEE=7V, RL=10kΩ).
Builtin Input Gain Amp useful for adjusting the output signal voltages.
Builtin Operational Amplifier useful for filter construction (BD3818KS).
Builtin Dynamic Bass Boost circuit (BD3818KS).
2wire serial control (BD3818KS for 5V, BD3811K1 for both 3.3V and 5V).
Builtin Output Gain Amp useful for adjusting the output signal voltages (BD3811K1).
REC output terminal with a REC input/output switch useful for monitoring Equalizer Amp (BD3811K1).
Output mute controlled by either serial data or an external control terminal.

Applications
AV receivers.
Home theater systems.
Miniaudio systems.