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Sound Processors. BD3402KS2 Datasheet |
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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
Power Supply Voltage
Vcc 10
Vdd 6
Power Dissipation
Pd 1200*
Input Voltage Range
Vin GND-0.3 to VCC+0.3
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
BD3401KS2
BD3402KS2
Symbol
Vcc
Vdd
Range
8 to 9.5
3 to 5.5
Unit
V
V
mW
V
℃
℃
Unit
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/18
2010.10 - Rev.A
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BD3401KS2,BD3402KS2
Technical Note
●Electrical characteristics
BD3401KS2
Ta=25 ℃ , VCC=9V, VDD=5V, f=1kHz, Vi=1Vrms,RL=10kΩ,Rg=600Ω, INPUT SELECTOR=Ach, INPUT GAIN=0dB,
VOLUME=0dB, TREBLE=0dB, BASS=0dB, MIDDLE=0dB, TONE ATT=0dB, MUX=STEREO, MIXING=OFF, MIXING
GAIN=0dB, PLAY BACK=TAPE A, REC=OFF, LINE=OFF, MIC=OFF, BASS BOOST=OFF, SURROUND=OFF, AMS=OFF,
ALC=OFF, INPUT=pin59,60, OUTPUT=pin32,33, unless otherwise noted.
Parameter
Limits
Symbol
Unit
Min. Typ. Max.
Conditions
Circuit Current
IQ - 35 50 mA (No signal)
Output Voltage Gain
Gv -2 0 2 dB INPUT GAIN=0dB
Total Harmonic Distortion ratio
Maximum Output Voltage
THDt
Vomaxt
- 0.005 0.05
%
BW=400 to 30kHz
OUT=pin32,33,53,54
2.0 2.5
-
Vrms
THD=1%, BW=400 to 30kHz
OUT=pin32,33,53,54
Residual Noise Voltage*
Vr - 1.8 6.0 µVrms Rg=0Ω, Vol=-dB, BW=IHF-A,
Output Noise Voltage*
Vno
Cross-talk between Channels* CTC
Cross-talk between Selectors*
CTS
- 3.0 9.0 µVrms Rg=0Ω, Vol=0dB BW=IHF-A
-
-80 -70
dB
Rg=0Ω, BW=IHF-A
VOLOUT=1Vrms
- -80 -70 dB Rg=0Ω, BW=IHF-A
Input Impedance
Rin
32 47 62
kΩ Pin1 to 4, 59 to 64
Total Harmonic Distortion ratio THDmix - 0.01 0.1
%
BW=400 to 30kHz, MIXING=ON
INPUT SELECTOR=B
Maximum Output Voltage
THD=1%, BW=400 to 30kHz
Vomaxmix 2.0 2.5 - Vrms MIXING=ON
INPUT SELECTOR=B
Output Voltage Gain
Gvp
23 25 27
dB
Vi=20mVrms, pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
Total Harmonic Distortion ratio THDp
- 0.01 0.1
Vi=20mVrms BW=400 to 30kHz
% pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
Maximum Output Voltage
Noise Voltage in input term*
THD=1%, BW=400 to 30kHz
Vomaxp 2.0 2.5 - Vrms pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
Rg=0Ω,BW=IHF-A
Vnin
- 0.7 6.0 µVrms pin5-6, 7-8=short
IN=pin9,10 OUT=pin6,7
PB MUTE Amount
BW=IHF-A, pin5-6, 7-8=short
PBM - - -70 dB IN=pin9,10
PLAY BACK=MUTE
ALC Operation Level
ALC 0.5 0.7 0.9 Vrms REC=ON ALC=ON
Total Harmonic Distortion ratio THDr
Output Noise Voltage*
Vnor
BW=400 to 30kHz
- 0.2 1
% OUT=pin14,15
REC=ON ALC=ON
Rg=0Ω, BW=IHF-A
- 40 120 µVrms OUT=pin14,15
REC=ON ALC=ON
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/18
2010.10 - Rev.A
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