bh7775k ROHM Co. Ltd., bh7775k Datasheet - Page 11

• Manufacturer Part Number: bh7775k
• Description: Vcr Audio Signal Processing System
• Manufacturer: ROHM Co. Ltd.

Video ICs
[RHS CONTROL]
Output voltage level
Distortion
Output residual noise
Open loop gain
(PB PRE AMP)
[EQ SWITCH]
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
[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
[NORMAL PB AMP] (INPUT: NA HEAD IN, OUTPUT: LINE OUT)
Parameter
R
G
Symbol
THD
THD
R
R
R
V
R
V
V
V
V
I
CMP
EQ HEAD
I
VPBNOR
EXP
R
IN RHS
REC SP
REC SP
REC EQ
ONPBN
L RHS
EQ PB
OPSN
OENC
ONEC
ODEC
DET
END
PBN
– 13.4
– 17.0
– 26.4
– 11.2
– 52.4
58.0
40.7
0.83
5.10
Min.
8.3
98
—
—
—
—
—
—
—
– 11.6
– 15.7
– 24.7
– 63.6
– 56.5
– 50.2
– 9.4
Typ.
0.19
66.7
10.0
49.0
1.00
0.17
6.15
118
25
29
—
– 14.4
– 55.0
– 23.0
– 51.5
– 48.0
– 9.8
– 7.6
Max.
0.40
11.7
57.3
1.17
0.37
7.20
140
50
50
—
1
dBV
dBV
dBV
dBV
Unit
k
k
k
k
dB
dB
dB
dB
%
%
A
A
V
V
Rg = 1k ,
V
OUTPUT: NA PB OUT
SP MODE
EP MODE
Resistor connected between pin 49 and GND.
SP MODE
EP MODE
Input condition 1
TU input V
output level difference.
Input condition 1,
Connect the pertinent input to GND,
V
V
output level difference.
Resistance value connected between pins 13 and
36 and VEE. (when VCCS and VEES applied)
IN
IN
IN
IN
IN
= – 70dBV
= – 70dBV,
= – 70dBV
= – 15.7dBV
= – 15.7dBV
IN
2
= – 20dBV
Conditions
1
1
– 40.7dBV
– 70dBV
BH7775K
2
11