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부품번호 | BH7634AS 기능 |
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기능 | Audio / video switch for CANAL - Plus decoder | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 12 페이지수
Multimedia ICs
Audio / video switch for CANAL - Plus
decoder
BH7634AS
The BH7634AS is one-chip IC that contains audio and video switches that support 21-pin SECAM and PAL connec-
tors.
The I2C BUS for switch control simplifies applications, while the two expansion ports allow up to two external inputs.
•Applications
VCRs
•Features
1) I2C BUS control.
2) Video input is sync tip clamped, and includes a
small-capacity (0.022µF) input capacitor.
3) Three FSCOUT values.
4) Two expansion ports.
5) Audio mute function.
6) 75Ω driver output (pins 20 and 23) requires no
attached capacitor.
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Power supply voltage
Power dissipation
VCC 13.5
Pd 1200
Operating temperature
Topr
– 25 ~ + 60
Storage temperature
Tstg
– 55 ~ + 125
∗ Reduce by 12mW for each increase in Ta of 1°C over 25°C.
Unit
V
mW
°C
°C
•Recommended operating conditions (Ta = 25°C)
Parameter
Symbol Min. Typ. Max.
Operating power supply voltage
VCC
8.5 12
13
Unit
V
1
Multimedia ICs
BH7634AS
•Pin descriptions and input output equivalent circuits
Pin No. Pin name IN
OUT
Typ.
voltage
I / O equivalent circuits
1 VDECIN
3 VTUNIN
™ — 1.6V
5 VEXTIN
24 VVTRIN
1k
50µA
Pin description
Video signal input
For composite video signal
input (sink chip clamp input).
2 DRVGND
——
6 GND
0V
DRVGND
GND
Ground
DRVGND is the driver
ground. GND is the ground
for the circuit itself. GND and
DRVGND are not connected
internally.
4 DRVVCC
——
19 VCC
12V
DRVVCC
VCC
Power supply
DRVVCC is the driver
power supply. VCC is the
power supply for the circuit
itself. VCC and DRVVCC
are not connected internally.
7 ADECIN
9 AEXTIN
™ — 5.3V
11 ATUNIN
18 AVTRIN
8 FSCOUT — ™ —
Audio signal input
50µA
For audio signal input.
1k Input impedance is 50k.
50k
12V 6V FS control
Three voltages are output
via I2C BUS control: 11.8V,
5.9V, 0.2V.
50k
4
4페이지 Multimedia ICs
BH7634AS
•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 12V)
Parameter
〈Device〉
Supply current
FSCOUT voltage, H
FSCOUT voltage, M
FSCOUT voltage, L
FSCOUT restriction current
External controller sink current
External controller voltage, L
〈Video switches〉
Voltage gain
Frequency characteristics
〈Audio switches〉
Voltage gain
Maximum output level
Total harmonic distortion
Input conversion noise voltage
Input impedance
Offset voltage
〈Control〉
"H" level voltage
"L" level voltage
Symbol Min. Typ. Max. Unit
ICC
VFSCH
VFSCM
VFSCL
IFSC
ISYN
VAUXL
30
11.0
5.2
0
—
1.0
0
46
11.8
5.9
0.2
—
—
0.2
62
12.0
6.8
1.0
20
—
1.0
mA
V
V
V
mA
mA
V
GVV – 1 0 1 dB
VF – 3 0 1 dB
GVA
VOMA
THD
VMin.
ZIN
∆VOF
– 1 0 1 dB
3.0 3.6 — Vrms
— 0.005 0.1
%
— 20 100 µVrms
40 50 60 kΩ
— — 20 mV
VH
3.0 —
—
V
VL
0
— 1.5
V
Note: Supports I2C BUS input.
Conditions
No signal
RL = 10kΩ
RL = 10kΩ
RL = 10kΩ
VFSCO = 0V
RL = 10kΩ
RL = 10kΩ
VIN = 1VP-P, f = 4.43MHz
VIN = 1VP-P, f = 100k / 7MHz
VIN = 1Vrms, f = 1kHz
f = 1kHz, THD = 0.5%
VIN = 1Vrms, f = 1kHz
DIN AUDIO Rg = 600Ω
•Guaranteed design parameters (unless otherwise noted, Ta = 25°C, VCC = 12V)
Parameter
〈Video switches〉
Interchannel crosstalk
Secondary harmonics
Tertiary harmonics
〈Audio switches〉
Interchannel crosstalk
Mute attenuation
Symbol Min. Typ. Max. Unit
Conditions
CTV
— – 70 – 50
dB VIN = 1VP-P, f = 4.43MHz
HD2
— – 45 – 40
dB VIN = 1VP-P, f = 4.43MHz
HD3
— – 50 – 45
dB VIN = 1VP-P, f = 4.43MHz
CTA
VMTA
— – 90 – 70
— – 90 – 70
dB VIN = 1Vrms, f = 1kHz
dB VIN = 1Vrms, f = 1kHz
7
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다운로드 | [ BH7634AS.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
BH7634AS | Audio / video switch for CANAL - Plus decoder | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |