bh7775k ROHM Co. Ltd., bh7775k Datasheet - Page 12

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

12
Video ICs
Demedulation output
Demedulation output
Demedulation distortion
Demedulation SW
noise level
Demedulation noise
Carrier frequency
NTSC
Carrier frequency
PAL
Frequency deviation
Maximum frequency
deviation
FM output level
Carrier 2nd harmonic
Carrier 3rd harmonic
FM MIX ratio (FM MIX1 mode)
[MODEM REC MODE]
[MODEM PB MODE] (INPUT: FM PB IN, OUTPUT: LINE OUT L / R)
[Recording
Line output recording /
playback level
difference
level
level 2
level
(INPUT: TUNER IN L / R, LINE1 IN L / R, LINE2 IN L / R, BS IN L / R, OUTPUT: FM REC OUT L / R)
Carrier frequency, after BPF fo adjustment, V
Parameter
playback total characteristics] (EE · · · INPUT: LINE IN L / R, OUTPUT: LINE OUT L / R)
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Rch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
Lch
PB mode: Input FM PB IN = 660mV
DEV = DEV
DEV
DEV
Symbol
V
V
THD
THD
DEV
V
V
V
V
V
DEV
V
V
V
V
V
ODSWR
f
f
ODSWL
f
f
OFMR
ONDR
NOR
POR
OFML
f
f
f
ODR2
ONDL
NOL
POL
f
f
ODL2
ODL
ODR
RPR
2R
3R
LR
RPL
2L
3L
Max.
Max.
DR
DL
R
L
R
L
L,R
(frequency deviation given above). EE / PB line out level difference.
– 11.5
– 11.5
– 10.0
– 10.0
– 12.0
1.2950
1.6950
1.3945
1.7935
– 1.2
– 1.2
V
Min.
45.5
45.0
V
116
116
320
325
—
—
—
—
—
—
—
—
—
—
ODR
(PB · · · INPUT: FM PB IN, OUTPUT: LINE OUT L / R)
ODL
IN
= 660mV
– 53.0
– 95.0
– 95.0
– 48.0
– 52.0
– 55.0
– 10.2
1.3000
1.7000
1.4000
1.7990
– 9.3
– 9.3
– 7.5
– 7.5
V
V
Typ.
51.5
51.0
0.12
0.13
138
138
365
370
0.0
0.0
—
—
ODR
ODL
P-P
P-P
, f = 1.30MHz, 1.70MHz 1: 1 MIX, after BPF center frequency adjustment. Inpu
, 1.30MHz, 1.70MHz MIX IN
– 40.0
– 40.0
– 40.0
– 42.0
– 5.0
– 85.0
– 85.0
1.3050
1.7050
1.4055
1.8045
– 5.0
+ 1.2
+ 1.2
– 8.4
– 7.1
– 7.1
Max.
V
57.5
57.0
V
0.35
0.35
160
160
420
425
—
—
ODR
ODL
mV
mV
MHz
MHz
MHz
MHz
dBV
dBV
dBV
dBV
dBV
dBV
dBV
dBV
Unit
kHz
kHz
kHz
kHz
dB
dB
dB
dB
dB
dB
dB
%
%
P-P
P-P
1.3MHz / 1.7MHz spectrum ratio.
No input, V
f
V
No input, V
f
V
FM OUT SW: FM L mode
FM OUT SW: FM R mode
2nd stage harmonics and fundamental harmonics
spectral ratio Lch: FM L mode, Rch: FM R mode
3rd stage harmonics and fundamental harmonics
spectral ratio Lch: FM L mode, Rch: FM R mode
DEV
DEV
DEV
DEV
DEV
DEV
f = 10kHz, AUDIO H. SW. P = – Hz
5V
10kHz TRAP passes DEV. =
Unmodulated
Input condition 1
Input condition 4 (f = 10kHz)
EE mode: V
frequency adjustment.
SC
SC
2
IN
IN
P-P
= 3.579545MHz
= 4.433619MHz
= 150 ~ 500mV
= 150 ~ 500mV
L
R
L
R
L
R
rectangular-waveform input. After
=
=
=
=
=
=
50.0kHz, f = 1kHz,
CC
CC
50.0kHz, f = 1kHz
50.0kHz, f = 10kHz
50.0kHz, f = 1kHz
50.0kHz, f = 10kHz
50.0kHz, f = 1kHz,
stable, after automatic adjustment
stable, after automatic adjustment
IN
= – 10.0dBV after carrier
Conditions
P-P
P-P
BH7775K
1
1
25.0kHz
2