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參數(shù)資料
| 型號： | BH7272KV |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | PV 3C 3#16 SKT PLUG |
| 中文描述： | 雙通道錄像機前/承包數(shù)字錄像機放大器 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大小： | 185K |
| 代理商： | BH7272KV |
3
Video ICs
BH7272KV
Electrical characteristics (unless otherwise noted, Ta = 25°C, V
CC
= 4.9V, 3.0V and f = 4.0MHz)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Voltage gain ch-1
Voltage gain ch-2
G
VP1
G
VP2
50
50
54
54
58
58
dB
dB
Pin 35 output measurement when pin 11
input is 0.3mV
P-P
Pin 35 output measurement when pin 2
input is 0.3mV
P-P
Frequency characteristics
Crosstalk
PB mute attenuation
AGC output level
AGC control sensitivity
AGC frequency
characteristics
G
Vf
CT
P
MU
P
V
AGC
V
AGC
G
VAF
—
—
230
—
280
0.2
—
330
2.0
—
dB
dBc
dBc
mV
P-P
dB
dB
Pin 35 output level differential
when f = 8.0 / 1.0MHz and V
IN
= 0.3mV
P-P
Pin 35 output level differential
when for pin 45: H / L
Pin 35 output level differential when pin 33
goes from L to H and pin 2 input is 0.3mV
P-P
Pin 27 output measurement when pin 31
input is V
IN
= 300mV
P-P
Pin 27 output level differential when pin 31
input V
IN
= 150 to 600mV
P-P
Pin 27 output level differential when f = 8.0 /
1.0MHz and pin 31 input is V
IN
= 300mV
P-P
Playback system
Sleep-mode circuit current
Circuit current
Iq
(S)
Iq
(P)
—
—
14
34
30
56
mA
mA
No signal
No signal
Voltage gain differential
G
VP
—
dB
G
VP
= G
VP1
– G
VP2
Note: dBc: dB below carrier (used to express relative level from carrier reference for convenience sake)
– 3.0
±
0.0
– 1.5
+ 1.5
– 3.0
±
0.0
– 46
– 35
– 57
– 35
Recording current level 1
Recording current level 2
I
OR1
I
OR2
14
14
20
20
26
26
mA
P-P
mA
P-P
Pin 11 output measurement when pin 25
input is 0.3V
P-P
Pin 2 output measurement when pin 25
input is 0.3V
P-P
Recording system
Circuit current
Iq
(R)
—
54
80
mA
No signal
REC mute attenuation
Logic system
PB holding voltage
PB holding voltage
REC holding voltage
REC holding voltage
HSW holding voltage
HSW holding voltage
RECGATE holding voltage
RECGATE holding voltage
I
OF
MU
R
V
TH46H
V
TH46L
V
TH17H
V
TH17L
V
TH45H
V
TH45L
V
TH18H
V
TH18L
—
2.0
0.0
2.0
0.0
2.0
0.0
2.0
0.0
—
—
—
—
—
—
—
—
– 35
3.0
1.0
3.0
1.0
3.0
1.0
3.0
1.0
dB
dBc
V
V
V
V
V
V
V
V
f = 8.0 / 1.0MHz, pin 25 input = 0.3V
P-P
Pins 2, 11 output level differential
Pins 46 voltage to hold PB
Pin 46 voltage to hold PB
Pin 17 voltage to hold REC
Pin 17 voltage to hold REC
Pin 45 voltage to hold HSW
Pin 45 voltage to hold HSW
Pin 18 voltage to hold RECGATE
Pin 18 voltage to hold RECGATE
– 3.0
±
0.0
– 60
—
REC frequency
characteristics
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