- 您現在的位置：買賣IC網 > PDF目錄384114 > BA7795 (Rohm CO.,LTD.) VCR standard audio signal processor PDF資料下載
參數資料
| 型號： | BA7795 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | VCR standard audio signal processor |
| 中文描述： | 錄像機標準音頻信號處理器 |
| 文件頁數： | 10/12頁 |
| 文件大?。?/td> | 163K |
| 代理商： | BA7795 |
10
Video ICs
BA7795LS / BA7795FS
Operation notes
(1) ALC level
Set the ALC level in the range – 8dBV to 0dBV by
selecting the values of resistors R1 and R2 connected
between BIAS, ALC LEVEL and GND.
The formula for approximating the value of this resistor
is as follows:
If the ALC level setting is too low, level variation will
increase compared to that of the standerd level (V
OA
=
– 6dBV), and conversely, if the level is too high, the
level variation will decrease, but distortion will
increase.There is almost no temperature characteristic,
but the ALC level does vary with supply voltage (V
CC
)
as shown in the formula above. Use care when setting
it.
(2) Mute signal
Apply the mute signal shown below at power on and
off. If the muting time is short, a pop sound will be audi-
ble, particularly when the power is switched on.
Also, be certain to apply the mute signal when switch-
ing between PB / LINE / TU. In the case of LINE / TU
switching, it is possible to suppress switching noise by
applying a time constant to the signal, in which case it
is not necessary to apply the mute signal.
(3) Recording control
Do not switch the PB and REC modes on togther. This
will cause faulty operation.
(4) Line output
The line output can drive a load resistance of up to
2k
. Depending on the type of load, it can cause local
oscillation (eg. large capacitive loads that draw large
current), so caution is required. In particular, when
there is a possibility that the line output will be connect-
ed to a shielded cable, or line cable, connect a resistor
of about 1k
in series with the output so that the
capacitive load is not directly coupled to the IC output
terminal.
2sec or more
(H)
V
CC
MUTE CTRL
LINE OUT
(H)
Fig. 7
2
V
CC
– 0.7
R
1
R
1
+ R
2
V
BIAS
V
OA
=
=
1
2
R
1
R
1
+ R
2
2
1
2
V
CC
– 0.7
R
1
R
1
+ R
2
V
BIAS
V
BIAS
=
BIAS
ALC LEVEL
Fig. 6
相關PDF資料 |
PDF描述 |
|---|---|
| BA7797 | VCR standard audio signal processor |
| BA783S | Bandswitching Diodes |
| BA782S | Bandswitching Diodes(開關二極管) |
| 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 |
| BA782 | Bandswitching Diodes(開關二極管) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。