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BD3843FS 반도체 회로 부품 판매점

6ch / 9ch Stereo Input Selectors



ROHM Semiconductor 로고
ROHM Semiconductor
BD3843FS 데이터시트, 핀배열, 회로
Sound Processors for Home Theater Systems
6ch / 9ch Stereo
Input Selectors
BD3843FS,BD3841FS
No.10081EAT07
Description
BD3843FS is a function switch IC with two 6ch (9ch for BD3841FS) inputs. It can independently control outputs of 2 systems:
2ch REC output (3ch for BD3841FS) and 1ch line output. Therefore, it is can be used for 2nd room entertainment and 2nd
source recording. BD3843FS has excellent cross-talk characteristics between channels and selectors. Low distortion, and
low noise are realized by a basic pattern layout.
Features
1) 2 room entertainment / 2 source recording.
2) 6ch volume LSI BD3813KS/BD3815KS can be controlled simultaneously by the serial control bus.
3) 7ch volume LSI BD3816K1, BD3817KS with BD3843FS can be controlled simultaneously by the serial control bus.
4) 14ch input is available by combining 2chips (BD3843FS and BD3841FS).
5) Excellent cross-talk characteristics between channels by basic pattern layout.
6) Built-in buffer amplifier.
7) 2-line serial control bus (for both 3.3V and 5V).
8) Operated by single and dual power sources.
Applications
AV receivers, home theater systems, mini-audio systems, and TVs.
Product lineup
Parameter
BD3843FS
BD3841FS
Input selector
6
9
REC output
23
Package
SSOP-A24
SSOP-A32
Absolute maximum ratings (Ta=25)
Parameter
Symbol
Ratings
Unit
Power Supply Voltage
VCC
VEE
7.5 *1
-7.5
V
Input signal voltage
Power Dissipation
Operating temperature
VIN VCC+0.3VEE-0.3 V
Pd
800 (BD3843FS)
950 (BD3841FS)
*2 mW
Topr 20+75
Storage temperature
Tastg
55+125
*1 Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause
an excessive current may cause permanent damage to the IC.
When starting up power supplies, VEE and VCC should be powered on simultaneously, or VEE first followed by VCC.
*2 Reduced by 8 mW/over 25(BD3843FS), when installed on the standard board (size: 70 x 70 x 1.6mm).
Reduced by 7.7 mW/over 25(BD3841FS), when installed on the standard board (size: 70 x 70 x 1.6mm).
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/9
2010.06 - Rev.A


BD3843FS 데이터시트, 핀배열, 회로
BD3843FS,BD3841FS
Technical Note
Operating range
Must function normally at Ta = 25,
Part No.
Parameter
BD3843FS
BD3841FS
Action power source voltage
(both power sources)
Action power source voltage
(single power source)
Action power source voltage
(both power sources)
Action power source voltage
(single power source)
Symbol
VCC
VEE
VCC- VEE
VCC
VEE
VCC- VEE
Min.
4
-7.3
8
5
-7.3
10
Ratings
Typ.
7
-7
14
7
-7
14
Max.
7.3
-4
14.6
7.3
-5
14.6
Unit
V
V
Electrical characteristics
Ta=25, VCC=7V, VEE=7V, f=1kHz, Vin=1Vrms, RL=10kΩ, Rg=600Ω, unless otherwise noted.
Parameter
Symbol
Limits
Min. Typ. Max.
Unit
Conditions
Circuit current
VCC
VEE
IQ
3
-10 -3
10
mA No signal
Output voltage gain 1ch
Gv1 -2 0 2 dB
Output voltage gain 2ch
Gv2 -2 0 2 dB
Total harmonic distortion ratio 1ch
THD1
0.004 0.05
% BW=40030kHz
Total harmonic distortion ratio 2ch
THD2
0.004 0.05
% BW=40030kHz
Maximum output voltage 1ch
Vomax1 3.4
4.2
Vrms THD=1%
Maximum output voltage 2ch
Vomax2 3.4
4.2
Vrms THD=1%
Output noise voltage 1ch
Vno1
1
5 µVrms Rg=0Ω, BW=IHF-A
Output noise voltage 2ch
Cross-talk between channels
1ch2ch
Cross-talk between channels
2ch1ch
Cross-talk between selectors 1ch
Vno2
CTC12
CTC21
CTS1
1 5 µVrms Rg=0Ω, BW=IHF-A
-95 -80 dB Rg=0Ω, BW=IHF-A
-95 -80 dB Rg=0Ω, BW=IHF-A
-95 -80 dB Rg=0Ω, BW=IHF-A
Cross-talk between selectors 2ch
CTS2 -95 -80 dB Rg=0Ω, BW=IHF-A
R voltage gain 1ch
GVR1
-2
0
2 dB RL=47k,
R voltage gain 2ch
R Total harmonic distortion ratio 1ch
R Total harmonic distortion ratio 2ch
R output noise voltage 1ch
GVR2
THDR1
THDR2
VnoR1
-2
0 2 dB RL=47k,
0.01 0.09
0.01 0.09
%
RL=47k,
BW=40030kHz
%
RL=47k,
BW=40030kHz
1 5 µVms Rg=0Ω, BW=IHF-A
R output noise voltage 2ch
VnoR2
1
5 µVms Rg=0Ω, BW=IHF-A
R output impedance 1ch
RoutR1
50 100
R output impedance 2ch
RoutR2
* Note: This IC is not designed to be radiation-resistant.
50 100
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/9
2010.06 - Rev.A




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6ch / 9ch Stereo Input Selectors - ROHM Semiconductor