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參數(shù)資料
| 型號： | BH7775K |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | VCR audio signal processing system |
| 中文描述： | 錄像機音頻信號處理系統(tǒng) |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 226K |
| 代理商： | BH7775K |
4
Video ICs
BH7775K
Pin descriptions
Pin function - 1 / 2
I / O circuit
Pin voltage
Pin name
Function
3k
(
2.5V Min.)
BS input (L and R).
TUNER input (L, R, and M).
Serial control GND.
Serial control data input.
Serial control clock input.
FM input Lch signal component envelope output.
Hi
-
Fi DET output for FM input. ADJ FLAG output for ADJ.
fsc input terminal for VCO and BPF adjustment.
Hi
-
Fi input for output switcher.
PNR audio output.
PNR attack and recovery time setting. Attack
R: 530
, recovery R: 6.5k
.
Waiting characteristic low-frequency time constant setting
Waiting characteristic high-frequency time constant setting
NR emphasis time constant setting.
(external C = 0.01
μ
F)
PNR operating reference potential.
VCO control current setting terminal.
VCO control DAC voltage output terminal .
PNR, MODEM and BPF GND. L and R unconnected.
FM BPF center frequency adjustment.
FM ALC time constant setting.
Note) I / O circuit; EF: emitter follower, P-P: push pull, B: base, and C: collector.
All numerical values are standardized values.
Playback FM input. 660mV
P-P
Typ.
No input coupling capacitor (GND to V
CC
).
Line output mute control input.
MODEM and BPF V
CC
.
High-voltage head switch (BA7755) control terminal.
Audio head switching pulse input.
EE: recording FM output. Sine wave output.
PB: BPF output monitor terminal.
Pin No.
2, 1
BS IN L, R
0.0V
69.8k
4, 3, 5
TUNER IN L, R, M
0.0V
47.0k
6
GNDD
0.0V
—
7
DATA IN
—
B (PNP)
8
CLOCK IN
—
B (PNP)
EE: 50k
10
FSC IN
0.0V
200k
11, 38
Hi-Fi IN L, R
0.0V
47k
12, 37
Hi-Fi OUT L, R
0.0V
EF: (P-P)
14, 35
WTNG1 L, R
0.0V
10k
15, 34
WTNG2 L, R
0.0V
1.1k
17, 32
DC FB L, R
0.0V
11.5k
18, 31
VCO f
0
ADJ L, R
2.5V
EF (NPN)
19, 30
VCO DAC BF OUT L, R
1.4V
EF (NPN)
22
MUTE CTRL
—
23
VCB
5.0V
—
26
RHS CTRL
—
C (NPN)
24
BPF f
0
ADJ
1.9V
EF (NPN) ~ 200
27
AHSWP IN
—
B (PNP)
28
FM REC OUT
EE: 3.3V
PB: 3.3V
EF (NPN) ~ 200
9
ENVE OUT / Hi-Fi DET
/ ADJ FLAG
EE: 0.8V
PB: 1.0V
PB, ADJ: EF (NPN)
13, 36
NR TC L, R
– 5.0V
—
16, 33
NR EMPH L, R
0.0V
—
20, 29
GND (GNM) L, R
0.0V
—
21
FM PB IN
0.0V
50k
25
FM ALC
0.0V
EF (NPN) ~ 2.5k
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PDF描述 |
|---|---|
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| BH7801BK | Single chip Hi-Fi audio signal processor |
| BH7802K | Single chip Hi-Fi audio signal processor |
| BH7881EFV | Silicon Monolithic Integrated Circuit |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BH7777AK | 制造商:Panasonic Industrial Company 功能描述:IC |
| BH7778AK | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Audio Processor for VCR |
| BH7779K | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Audio Processor for VCR |
| BH7800K | 制造商:ROHM 制造商全稱:Rohm 功能描述:Single chip Hi-Fi audio signal processor |
| BH7801BK | 制造商:ROHM 制造商全稱:Rohm 功能描述:Single chip Hi-Fi audio signal processor |
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