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PDF BH3810 Data sheet ( Hoja de datos )

Número de pieza BH3810
Descripción Vocal fader IC with input selector
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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No Preview Available ! BH3810 Hoja de datos, Descripción, Manual

Multimedia ICs
Vocal fader IC with input selector
BH3810FS
The BH3810FS is a vocal fader IC that is serial control compatible. It has mode switching that also includes a voice
multiplexing mode, a five-input selector, a gain selector and other such features, which can all be controlled serially.
Eight open-collector terminals and two tri-state terminals are provided on the chip to facilitate control by other ICs.
Applications
Component stereo systems, CD radio cassette players, TVs and car stereos.
Features
1) Built-in low-pass filter can perform vocal fader func-
tion (erasing of vocals from commercially available
music software) using just one chip.
2) Serial control can be used to switch between vocal
fader, through, multiplex, and mute modes.
3) Built-in gain selector allows selection of gain from
6dB to 20dB in 2dB steps.
4) Five-channel input selector.
5) Mic. mixing amplifier with mute function. Key con-
troller input also provided.
6) SSOP-A32 pin package.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Applied voltages
Power dissipation
VDD + 5.5
VEE – 4.5
Pd 850
Operating temperature
Topr
– 40 ~ + 85
Storage temperature
Tstg – 55 ~ + 125
Maximum open collector voltage
VOP
Reduced by 8.5mW for each increase in Ta of 1°C over 25°C ,
when mounted on a 50mm × 50mm × 1.6mm board.
14
Unit
V
mW
°C
°C
V
Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Limits
Power supply voltage
VDD
VEE
4.0 ~ 5.3
– 4.3 ~ – 3.0
Unit
V
V
1

1 page




BH3810 pdf
Multimedia ICs
BH3810FS
Circuit operation
(1) About the data format
Data format
MSB
24 bits total
LSB
Data D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23
17pin 18pin 19pin 20pin 21pin 22pin 23pin 24pin 15pin
16pin
Descri-
ption
Input
selector
Input
selector
Mode
selector
Open collector port
Tri-state
port
Mic.
Tri-state mute
port
Chip
select
Bit number 3bit 3bit 3bit
8bit 2bit 2bit 1bit 2bit
• Address is "00"
D22 D23
00
Fig.2
At power on
Gain selector
Mode selector
Mic
Key controller
Input selector
6dB
Through mode
Mute OFF
OFF
LA, RA
Output port: current attraction OFF
Tri-state port: Low
Output port: open collector
Data D16 D15 D14 D13 D12 D11 D10
D9
Pin
name
PORT PORT PORT PORT PORT PORT PORT PORT
12345678
(24pin) (23pin) (22pin) (21pin) (20pin) (19pin) (18pin) (17pin)
0 Current sink OFF
1 Current sink ON
Tri-state
PORT9 (16pin)
D19 D20
Mode
0 0 LOW
0 1 OPEN
1 0 OPEN
1 1 HI
D19, D20
Mic. mute
D21 Mode
0 Mic. ON
1 Mic. MUTE
PORT10 (15pin)
D17 D18
Mode
0 0 LOW
0 1 OPEN
1 0 OPEN
1 1 HI
D17, D18
5

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