參數(shù)資料
型號(hào)： BH7775K
廠商： Rohm CO.,LTD.
英文描述： VCR audio signal processing system
中文描述： 錄像機(jī)音頻信號(hào)處理系統(tǒng)
文件頁數(shù)： 11/17頁
文件大?。?/td> 226K
代理商： BH7775K
11
Video ICs
BH7775K
[NORMAL PB AMP] (INPUT: NA HEAD IN, OUTPUT: LINE OUT)
[EQ SWITCH]
[PNR ENCODE MODE]
[PNR DECODE MODE]
Encode output level
Compression characteristic
Encode distortion
Output residual noise
Output voltage level
Expansion characteristic
Time constant setting resistor
Output voltage level
Distortion
Output residual noise
Open loop gain
(PB PRE AMP)
REC FB resistance SP
REC FB resistance EP
REC EQ resistance
PB EQ SW impedance
HEAD EQ SW impedance
RHS control current
RHS control leakage current
[RHS CONTROL]
G
VPBNOR
V
OPSN
THD
PBN
V
ONPBN
R
REC SP
R
REC SP
R
REC EQ
R
EQ PB
R
EQ HEAD
I
IN RHS
I
L RHS
CMP
EXP
R
DET
THD
END
V
ONEC
V
ODEC
V
OENC
58.0
– 13.4
—
—
8.3
40.7
0.83
—
—
98
—
– 26.4
– 52.4
5.10
—
—
– 11.2
– 17.0
66.7
– 11.6
0.19
– 63.6
10.0
49.0
1.00
25
29
118
—
– 24.7
– 50.2
6.15
0.17
– 56.5
– 9.4
– 15.7
—
– 9.8
0.40
– 55.0
11.7
57.3
1.17
50
50
140
1
– 23.0
– 48.0
7.20
0.37
– 51.5
– 7.6
– 14.4
dB
dB
%
dBV
k
k
k
μ
A
μ
A
dB
dB
k
%
dBV
dBV
dBV
V
IN
= – 15.7dBV
Input condition 1
TU input V
IN
= – 20dBV
→
– 70dBV
output level difference.
Input condition 1,
1
Connect the pertinent input to GND,
2
V
IN
= – 15.7dBV
→
– 40.7dBV
output level difference.
Resistance value connected between pins 13 and
36 and VEE. (when VCCS and VEES applied)
V
IN
= – 70dBV
OUTPUT: NA PB OUT
V
IN
= – 70dBV
V
IN
= – 70dBV,
1
Rg = 1k
,
2
SP MODE
EP MODE
SP MODE
EP MODE
Resistor connected between pin 49 and GND.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
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