BD3401KS2 Datasheet, PDF (1/19 Pages) Rohm – Single Power Supply Sound Processors with Built-in Pre Amplifier for Tape Recording and Play Back

Sound Processors for BOOM BOX / Mini-component Stereo
Single Power Supply Sound Processors
with Built-in Pre Amplifier for Tape Recording
and Play Back (With Integrated 2-/3- band Equalizer)
BD3401KS2,BD3402KS2
No.10086EAT03
●Description
The Sound Processor with built-in record/play functions for cassette players, is suited for sound quality products such as,
BOOM BOX, mini- and micro-audio systems. It incorporates various functions ranging from audio source selectors to
preamplifiers at the front stage, preamplifier for cassette recording/playing, and a 2-wire serial bus.
●Features
1) Provides Surround and Bass Boost with the Soft-switching feature to reduce the shock sound at switching (BD3401KS2)
2) Provides a specialized power supply terminal in a digital circuit, in order to set and maintain the state inside the IC
by the minute stand-by current.
3) Built-in preamplifier for cassette recording/playing allows for minimal external components, freeing up board space.
4) Arranges all I/O terminals to a single point and allows easy PCB routing.
5) Volume and Tone implemented with a resistance ladder circuit; achieving high performance with low noise and low distortion
6) Energy-saving design resulting in low current consumption, by utilizing the BiCMOS process.
It has the advantage in quality over the scaling down the power heat control of the internal regulators.
●Applications
BOOM BOX, mini-audio systems, and micro-audio systems.
●Product lineup
Equalizer
Parameter
Volume
Cassette Recording/Playing Amplifier
Karaoke
Microphone Input
Subwoofer Output
Output for Spectrum Analyzer
Surround
Bass Boost
Package
BD3401KS2
3 band(BASS, MIDDLE, TREBLE)
0 to -44dB/2dB step
-44 to -76dB/4dB step, -∞dB
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SQFP-T64
BD3402KS2
2 band(BASS, TREBLE)
0 to -44dB/2dB step
-44 to -76dB/4dB step, -∞dB
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SQFP-T64
●Absolute maximum ratings (Ta=25℃)
Items
Symbol
Ratings
Unit
Power Supply Voltage
Vcc
10
V
Vdd
6
V
Power Dissipation
Pd
1200*
mW
Input Voltage Range
Vin
GND-0.3 to VCC+0.3
V
Operating Temperature Range
Topr
-25 to +75
℃
Storage Temperature Range
Tstg
-55 to +125
℃
* Reduced by 12 mW/℃ over 25℃, when installed on the standard board (size: 70×70×1.6mm).
●Operating voltage range
Device Name
Symbol
Range
Unit
BD3401KS2
BD3402KS2
Vcc
Vdd
8 to 9.5
3 to 5.5
V
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2010.10 - Rev.A