Video ICs
BH7775K
Parameter
Symbol Min. Typ. Max. Unit
Conditions
[NORMAL PB AMP] (INPUT: NA HEAD IN, OUTPUT: LINE OUT)
Output voltage level
Distortion
Output residual noise
Open loop gain
(PB PRE AMP)
VOPSN
THDPBN
VONPBN
– 13.4
—
—
– 11.6
0.19
– 63.6
– 9.8
0.40
– 55.0
GVPBNOR
58.0
66.7
—
dB
VIN = – 70dBV
%
VIN = – 70dBV,∗1
dBV Rg = 1k Ω,∗2
dB
VIN = – 70dBV
OUTPUT: NA PB OUT
[EQ SWITCH]
REC FB resistance SP
RREC SP
8.3
10.0 11.7
kΩ SP MODE
REC FB resistance EP
RREC SP
40.7
49.0
57.3
kΩ EP MODE
REC EQ resistance
RREC EQ
0.83
1.00
1.17
kΩ Resistor connected between pin 49 and GND.
PB EQ SW impedance
REQ PB
—
25
50
Ω
SP MODE
HEAD EQ SW impedance REQ HEAD
—
29
50
Ω
EP MODE
[RHS CONTROL]
RHS control current
IIN RHS
98
118
140
µA
RHS control leakage current IL RHS
—
—
1
µA
[PNR ENCODE MODE]
Encode output level
VOENC – 17.0 – 15.7 – 14.4 dBV Input condition 1
Compression characteristic
Encode distortion
Output residual noise
CMP – 26.4
THDEND
—
VONEC
—
– 24.7
0.17
– 56.5
– 23.0
0.37
– 51.5
dB
TU input VIN = – 20dBV→ – 70dBV
output level difference.
%
Input condition 1,∗1
dBV Connect the pertinent input to GND,∗2
[PNR DECODE MODE]
Output voltage level
VODEC – 11.2 – 9.4 – 7.6
dBV VIN = – 15.7dBV
Expansion characteristic
EXP – 52.4 – 50.2 – 48.0
dB
VIN = – 15.7dBV→ – 40.7dBV
output level difference.
Time constant setting resistor RDET
5.10 6.15 7.20
kΩ
Resistance value connected between pins 13 and
36 and VEE. (when VCCS and VEES applied)
11