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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： | 錄像機高保真的音頻信號錄制/鉛放大器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 142K |
| 代理商： | BA7746 |
5
Video ICs
BA7746S / BA7746FS
13
REC: 0V
PB: 0V
14
REC: 0.58V
PB: 0V
15
REC: 4.1V
PB: 0V
16
GND
—
17
REC: 0V
PB: 0.8V
18
REC: 0V
PB: 0.7V
Pin No.
Pin name, function and remarks
Voltage
Circuit diagram
REC AGC FILTER
REC AGC filter.
The attack characteristics of the recording amplifier
can be adjusted using the CR circuit.
Reduce the CR circuit GND-side impedance to
improve the common-mode distortion.
REC CURRENT SENSE
Terminal for monitoring the recording current.
Open emitter output.
The REC AGC output current can be adjusted with
the R value.
e.g. 12
...
48.2mA
P-P
, 15
...
38.6mA
P-P
REC OUT
Recording amplifier output and head switch.
Open collector output.
The head switch turns on and off in accordance with
the REC / PB control signal
MAIN GND
Earth for circuits other than the preamplifier.
Reference potential for the IC
PRE AC-FB ch1
AC feedback terminal for the playback amplifier
(ch1).
The high-frequency characteristics of the playback
amplifier can be adjusted with the R value
PRE IN ch1
Input terminal for the playback amplifier (ch1).
The low-frequency cutoff characteristics can be
adjusted with the value of the input coupling
capacitor.
The frequency characteristics can be adjusted so
that it is flat with the L value of the rotary
transformer, and the external capacitor C (100pF
etc.).
2k
2k
14
15
17
18
4k
13k
相關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 |
相關代理商/技術參數(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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