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參數(shù)資料
| 型號： | BA7795 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | VCR standard audio signal processor |
| 中文描述： | 錄像機(jī)標(biāo)準(zhǔn)音頻信號處理器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 163K |
| 代理商： | BA7795 |
6
Video ICs
BA7795LS / BA7795FS
Circuit operation
(1) EE oparation
The input switch is used to select the audio signal input
source (LINE or TUER). This signal is amplified by the
line amplifier (voltage gain: 20dB at 1kHz).
The ALC circuit controls the line amplifier output level.
The ALC level is set externally.
If mute mode is set in this state, the switch that con-
nects the output buffer will go off, but the ALC loop will
not be cut.
(2) Recoeding
In recording mode, the recording amplifier directly con-
nected to the line amplifier operates.
The PB HEAD switch in the playback equalizer amplifi-
er block switches on, and the signal is not input to the
playback equalizer amplifier.
The line amplifier output is attenuated by 20dB before it
is input to the recording amplifier, so if the feedback
components are chosen to given a gain of 20dB, the
same REC OUT output level as the line amplifier can
be obtained.
It is also possible to switch the REC equalizer charac-
teristic to suit the tape speed by switchig the control
signal to EQ CTRL. The recording amplifier gain and
equalizer characteristics are set externally.
Signal flow for EE and recording operation
C [F]
Units: R [
]
1
3
5
7
9
11
13
15
17
19
21
23
24
22
20
18
16
14
12
10
8
6
4
2
– 20dB
P
M
B
REC
LINE
+ 28dB
B
P
R
E
L
+
R
EP
22
μ
33
μ
V
CC
EQ CTRL
PB / TU / EE
CTRL
39k
8.2k
MUTE
CTRL
1.5k
15k
BIAS
OSC
REC + B
3.3
μ
330
22
μ
0.01
μ
330k
12k
8.2k
4.7k
4.7k
0.1
μ
47
μ
2.2M
LINE IN
TUNER IN
R
L
LINE OUT
10
μ
REC / EE
CTRL
BA7795LS
ALC
The BA7795FS has a different pin layout to the BA7795LS.
Fig. 3 Signal flow for EE / recording
+
+
+
+
+
+
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相關(guān)PDF資料 |
PDF描述 |
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| BA7797 | VCR standard audio signal processor |
| BA783S | Bandswitching Diodes |
| BA782S | Bandswitching Diodes(開關(guān)二極管) |
| BA783 | ECONOLINE: REC5-S_DRW(Z)/H4,H6 - Safety standards and approval: EN 60950 certified, rated for 250VAV (LVD test report)- Applied for Ul 1950 Component Recognised Certification- 5W DIP Package- 4kVDC & 6kVDC Isolation- Regulated Output- Continuous Short Circiut Protection Auto-Restarting |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7795FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:VCR standard audio signal processor |
| BA7795LS | 制造商:ROHM 制造商全稱:Rohm 功能描述:VCR standard audio signal processor |
| BA7795LS/FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Video LSIs |
| BA7796 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| BA7796FS | 制造商:Panasonic Industrial Company 功能描述:IC |
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