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2010.06 - Rev.A

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Sound Processors for Home Theater Systems

5.1ch

Sound Processor

BD3811K1,BD3818KS

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Description

BD3811K1 and BD3818KS are 5.1ch sound processors, with built-in Mode Selector/Input Selector. Functions, including

6-ch Volume, Gain Amp, Bass, Treble, Mixing (BD3818KS), Dynamic Bass Boost (BD3818KS) and Bass Boost (BD3811K1)

are integrated into a single chip.

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Features

1) Independent 6 channels for Master Volume (0 to -103dB, 1dB/Step, MUTE, BD3811K1)

(0 to -95dB 1dB/Step, MUTE, BD3818KS)

Implementation of a resistance ladder type circuit reduces residual noise and a shock sound at switching.

2) Low current consumption design achieved by adopting the BiCMOS process

3) Maximum output voltage (BD3818KS): 4.3Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)

Maximum output voltage (BD3811K1): 4.2Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)

4) Built-in Input Gain Amp useful for adjusting the output signal voltages

5) Built-in Operational Amplifier useful for filter construction (BD3818KS)

6) Built-in Dynamic Bass Boost circuit (BD3818KS)

7) 2-wire serial control (BD3818KS for 5V, BD3811K1 for both 3.3V and 5V)

8) Built-in Output Gain Amp useful for adjusting the output signal voltages (BD3811K1)

9) REC output terminal with a REC input/output switch useful for monitoring Equalizer Amp (BD3811K1)

10) Output mute controlled by either serial data or an external control terminal

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Applications

AV receivers, home theater systems and mini-audio systems.

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Line up matrix

Parameter

BD3811K1

BD3818KS

Input Selector

8 inputs

5 inputs

Input Gain

2Step

4 Step or 2 Step

Volume

0 to -103dB 1dB/Step

0 to -95dB 1dB/Step

Bass, Treble

14dB 2dB/Step

14dB 2dB/Step

Output Gain

0, 6 to 18dB 2dB/Step

Variable depending on the external resistance

Mixing

No

Yes

Bass Boost

0 to 12dB, 4dB/Step

0 to 12dB, 4dB/Step

Dynamic type

Package

QFP80

SQFP80

No.10081EAT02