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00W073A
Sound processor for CD radio cassette player
BD3871FS
7.80.3
5.40.2
Description BD3871FS is a sound processor for CD/MD radio cassette player. This IC provides all functions, such as input selector (3 input sources), an input gain amplifier (25dB, 27dB, 29dB),and a surround, tone (bass, treble). This IC can be controlled by a 2-wire serial data interface. Features
Dimension (Units : mm)
10.00.2 24 13
1 1.80. 1
12
0. 1 1
0.8
0.360. 1
0.3Min 0. 15
1) Can select center frequency and Q value of Bass characteristics by external components. 2) Mute switch at the input terminal can reduce cross talk. 3) Surround function is composed without external components. 4) Ideal for energy-saving designs with low current consumption due to the adoption of the BiCMOS process, allowing easy-design of the regulator blocks in the set. Applications CD radio cassette player, MD radio cassette player, Micro component stereo
SSOP-A24
Absolute Maximum Ratings (Ta=25C)
Parameter Power supply voltage Power dissipation Operating temperature range Storage temperature range Symbol Vcc Pd Topr Tstg -25 -55 Limits 10 800 ~ ~
*
Unit V mW +75 +125
C C
* Derating : 8.0mW/C for operation above Ta=25C
Recommended Operating Conditions (Ta=25C)
Parameter Operating voltage Symbol VDD Min. 4.5 Typ. 8 Max. 9.5 Unit V
September, 2000
0.150. 1
Electrical characteristics (Unless otherwise noted ; Ta=25C, Vcc=8V, f=1kHz, Vi=50mVrms, RL=10k , Rg=600 , INPUT GAIN=24dB, Vol=0dB, bass,treble=0dB, surround=OFF)
Parameter Circuit current Output voltage gain Total harmonic distortion Maximum output voltage Residual noise voltage Output residual noise voltage Volume control range Bass control range Treble control range Surround gain (Antiphase) Symbol IQ GV THD Vomax Vno Vmno VRI GB TB Vsur Min. -- 22 -- 1.6 -- -- -90
+12 -16 +10 -14
Typ. 8 24 0.01 2.1 4.5 40 -87
+14 -14 +12 -12
Max. 21 26 0.1 -- 15 80 -84
+16 -12 +14 -10
Unit mA dB % Vrms Vrms Vrms dB dB dB dB No signal
Conditions
VOUT=1Vrms, Bw=400~30kHz THD=1%, Bw=400~30kHz Rg=0 , Vol=-*, Bw=IHF-A Rg=0 , Vol=0dB, Bw=IHF-A VIN=1Vrms, 1dB/STEP VIN=100mVrms, 2dB/STEP VIN=100mVrms, 2dB/STEP VIN=100mVrms
8
10
12
Application Circuit
OUT1 OUT2
0.33 0.0022 0.0022
Vcc
DATA CLOCK LATCH
0.1
5.6K 0.1
0.1
5.6K 0.1 + 18
10 + 17
10
390K
390K
24
23
22
21
20
19
16
15
14
13
Surround
Treble1 fc=8kHz
Treble2 fc=8kHz
Bass 2
f0= 80Hz
Bass 1
f0= 80Hz
Logic
Vcc/2
Vcc/2
0dB ~ -87dB -* Vcc/2 Vcc/2
Vcc/2
BD3871FS 50k 50k 50k 50k 50k 50k
1
2
3 + 10 + 10
4
5 + 10
6 + 10
7 + 10
8 + 10
9 + 10 4.7K
10 + 10 4.7K C2
11 + 47
12
UNIT RESISTANCE : CAPACITOR : F
A1
A2
B1
B2
C1
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0

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