bh7779k ROHM Co. Ltd., bh7779k Datasheet - Page 12

• Manufacturer Part Number: bh7779k
• Description: Audio Signal Processing System
• Manufacturer: ROHM Co. Ltd.

12
Video ICs
Demodulation
output level
Demodulation
output level 2
Demodulation
distortion
Demodulation
SW noise
Demodulation
noise level
Line output
recording / playback
level difference
BPF center frequency setting
resistance value
1.30MHz insertion loss
1.15MHz attenuation
1.45MHz attenuation
1.70MHz attenuation
LcH, RcH mix input signal level, 660mV
NTSC Lch
Carrier setting resistance, after BPF f
FM BPF (INPUT: FMPB IN, OUTPUT: BPF MONITOR L / R)
MODEM PB MODE (INPUT: FM PB IN, OUTPUT: LINE OUT L / R)
Recording playback total characteristics ( EE···INPUT: LINE IN L / R, OUTPUT: LINE OUT L / R )
Parameter
Rch
Rch
Rch
Rch
Rch
Rch
Lch
Lch
Lch
Lch
Lch
Lch
Symbol
ATT
V
THD
V
THD
ATT
ATT
ATT
V
R
V
V
V
V
V
V
1.15
1.45
1.70
V
ODSWR
ODSWL
ONDR
ODR2
ONDL
ODL2
OBPF
ODR
RPR
ODL
RPL
NLC
DR
NL
NL
NL
DL
0
adjustment, V
P-P
– 12.7
– 12.7
– 14.1
– 9.6
– 9.6
– 1.2
– 1.2
ATT
– 9.8
ATT
– 8.1
V
(RATIO 1:1)
Min.
V
19.6
( PB···INPUT: FM PB IN, OUTPUT: LINE OUT L / R )
—
—
—
—
—
—
—
ODR
ODL
NLC
NLC
– 10.7
– 10.7
– 98.0
– 98.0
– 11.1
ATT
ATT
– 7.4
– 7.4
– 5.3
– 5.0
V
Typ.
V
0.12
0.13
25.2
0.0
0.0
—
—
—
ODR
ODL
IN
NLC
NLC
= 660mV
– 88.0
– 88.0
+ 1.2
+ 1.2
ATT
ATT
ATT
– 8.7
– 8.7
– 5.2
– 5.2
– 8.1
– 2.3
– 2.5
Max.
V
V
0.35
0.35
30.7
—
—
ODR
ODL
NLC
NLC
NLC
P-P
, 1.30MHz, 1.70MHz MIX IN
dBV
dBV
dBV
dBV
dBV
dBV
dBV
dBV
Unit
k
dB
dB
dB
dB
dB
dB
%
%
DEV
DEV
DEV
DEV
DEV
DEV
f = 10kHz, AUDIO H. SW. P = 30Hz, 5V
rectangular-waveform input. After 10kHz
TRAP passes DEV. =
Unmodulated
EE mode: V
PB mode: Input FM PB IN = 660mV
= DEV
EE / PB line out level difference.
NTSC f = 1.505MH ,
V
1.30MHz + 1.70MHz
When FM ALC is ON
1.15MHz + 1.70MHz
1.45MHz + 1.70MHz
1.30MHz + 1.70MHz
When BPF L and R output levels same.
f = 1.30MHz / 1.70MHz 1:1 MIX. Input DEV
2
IN
= 200mV
L
R
L
R
L
R
=
=
=
=
=
=
L,R
(frequency deviation given above).
50.0kHz, f = 1kHz
50.0kHz, f = 10kHz
50.0kHz, f = 1kHz,
50.0kHz, f = 1kHz
50.0kHz, f = 10kHz
50.0kHz, f = 1kHz,
IN
P-P
= – 9.7dBV, R
Conditions
25.0kHz
0
1
adjusted.
1
BH7779K
2
P-P
,
P-P