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參數(shù)資料
| 型號： | BA7746 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | VCR Hi-Fi audio signal REC / PB amplifier |
| 中文描述： | 錄像機(jī)高保真的音頻信號錄制/鉛放大器 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 142K |
| 代理商： | BA7746 |
3
Video ICs
BA7746S / BA7746FS
Pin descriptions
Pin No.
1
2
REC: 0.9V
PB: 0V
3
—
4
—
5
REC: 3.6V
PB: 1.9V
(RL: 1.8k
)
6
REC: 2.0V
PB: 2.0V
V
CC
—
Circuit diagram
Pin name, function and remarks
Voltage
V
CC
REC + B
Power supply for REC + B.
Connect to V
CC
(pin 7).
REC TC
REC + B time constant.
Use to adjust the REC + B rise time using the C
value. The value of the built-in resistor is 20k
.
The effect of current spikes when recording is
started is reduced
HSWP IN
Pulse input for head switching.
ch1: H, ch2: L
EP / SP CTRL
EP / SP mode control.
In EP mode, the playback amplifier gain is set to
+ 5dB (Typ.).
EP: H, SP: L
Do not leave open circuit
PRE OUT
Playback amplifier output.
Open emitter output.
When there is a chance of oscillation due to
capacitive load, reduce the output current, or
connect a resistor in series (approx. 390
).
Avoid capacitive coupling with the playback input
VCA CTRL (PRE MUTE)
VCA control.
When the terminal is open (a C is required), the
playback amplifier gain is set to the Typ. value.
The PRE MUTE function is made possible by
connection of a mute H signal to this
through a diode
20k
REC
24k
EP
SP
40k
MUTE H
580
30k
20k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BA7755 | High-voltage audio head selection switch |
| BA7757 | Switchless REC / PB amplifier for standard audio signal processing |
| BA7765AS | NORMAL AUDIO SIGNAL PROCESSINGS |
| BA7766AS | NORMAL AUDIO SIGNAL PROCESSINGS |
| BA7767AS | NORMAL AUDIO SIGNAL PROCESSINGS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7746FS | 制造商:Panasonic Industrial Company 功能描述:IC |
| BA7746S | 制造商:ROHM 制造商全稱:Rohm 功能描述:VCR Hi-Fi audio signal REC / PB amplifier |
| BA7746S/FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Video LSIs |
| BA7750AL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| BA7751AFS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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