파트넘버.co.kr BH3866AS 데이터시트 PDF


BH3866AS 반도체 회로 부품 판매점

Dual-line serial control sound processor IC



ROHM Semiconductor 로고
ROHM Semiconductor
BH3866AS 데이터시트, 핀배열, 회로
Video ICs
Dual-line serial control sound
processor IC
BH3866AS
The BH3866AS is a signal processing IC developed for the control of volume and tone quality in TV equipment.
Since dual-line serial control (I2C BUS) is used, the volume level and tone quality in TV equipment can be changed
using signals such as those from a microcomputer or similar device.
Applications
DVDs, personal computers, high-vision TVs, karaoke sets, digital broadcasts, CATVs, and other TV equipment
Features
1) 3-channel volume and sound quality control (for
stereo and center speakers).
2) Absorption of volume deviation between input
sources and improved S / N ratio, for better sound
quality, using an AGC circuit.
3) Control through I2C BUS serial control.
4) Internal pseudo-stereo circuit provides phase-shift
matrix surround effect.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Power supply voltage
Power dissipation
VCC
Pd
10.0
1250
Operating temperature
Topr
– 25 ~ + 75
Storage temperature
Tstg
– 55 ~ + 125
Reduced by 12.5mW for each increase in Ta of 1°C over 25°C.
Unit
V
mW
°C
°C
Recommended operating conditions (Ta = 25°C)
Parameter
Power supply voltage
Symbol
VCC
Min.
7.0
Typ.
Max.
9.5
Unit
V
1


BH3866AS 데이터시트, 핀배열, 회로
Video ICs
Block diagram
BH3866AS
32
50k
+
50k +
31 30 29 28 27 26 25 24
VCC
50k
50k +
OFF AGC
VCA
ON
CIN
CSEL
L+R
SMON
OFF +
ON
10k
10k
10k
MIX OFF
BASS
+
MIX ON
50k
L+S
10k PHASE Surr effect LFP
A OFF
OFF
G L+R L-R
+
C
ON 10k
ON
SHIFT
AMP
SSTE
SON
VCA
R-S
OFF
LOOP
ON VCC
50k
+
1
2
VCC
23 22
Tone
(bass / treble)
Tone
(bass / treble)
Tone
(bass / treble)
21 20 19
+
10k
+
10k
10k
+
50k
18 17
I2C BUS
interface
SCL SDA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin descriptions
Pin No. Pin name
1 RIN
2 GND
3 AGCADJ
4 LS1
5 LS2
6 SOUT
7 PS
8 Vref
9 STB
10 RT
11 RB
12 ROUT
13 SRV
14 SLV
15 SCL
16 SDA
2
Function
Rch input
Ground
AGC 0dB adjustment
AGC level sensor 1
AGC level sensor 2
Sch output pin and LPF
Phase shift pin (internal resistance: 18k)
1 / 2 VCC
Bass shock sound integration
Rch Treble fc setting
Rch Bass fc setting
Rch output
Vol Rch shock sound integration
Vol Lch shock sound integration
I2C communications clock
I2C communications data
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin name
DAC
SCV
COUT
LOUT
CB
CT
LB
LT
STT
BGAIN
MSIN
BIN
ADD
CIN
VCC
LIN
Function
Expansion DAC (L / H)
Vol Cch shock sound integration
Cch output
Lch output
Cch Bass fc setting
Cch Treble fc setting
Lch Bass fc setting
Lch Treble fc setting
Treble shock sound integration
Bass Mix Gain adjustment
Mono Sur input
Bass detection LPF operating amplifier input
L + R added output after AGC
Cch input
Power supply, 9V
Lch input




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BH3866AS

Dual-line serial control sound processor IC - ROHM Semiconductor