參數(shù)資料
型號： BH7801BK
廠商： Rohm CO.,LTD.
英文描述： Single chip Hi-Fi audio signal processor
中文描述： 單芯片Hi - Fi音頻信號處理器
文件頁數(shù)： 8/14頁
文件大?。?/td> 183K
代理商： BH7801BK
8
Video ICs
BH7801BK
Parameter
1: B.W. = 0.4 to 30kHz
2: DIN AUDIO
Symbol
Min.
Typ.
Max.
Unit
Conditions
FM MIX ratio (FM MIX1 mode)
f
LR
dB
– 14.5
– 12.5
– 10.5
Spectrum ratio 1.30MHz / 1.70MHz
MODEM REC MODE
(
INPUT: TUNER IN L / R, LINE1 IN L / R, LINE2 IN L / R, BS IN L / R OUTPUT: FM REC OUT)
MODEM PB MODE
(
INPUT: M PB IN, OUTPUT: LINE OUT L / R)
Carrier setting resistor, after BPF f
0
adjustment, V
IN
= 660mV
P-P
, 1.30MHz, 1.70MHz MIX IN
Recording
→
playback overall characteristics
(EE···INPUT: LINE IN L / R, OUTPUT: LINE OUT L / R)
(
PB···INPUT: FM PB IN, OUTPUT: LINE OUT L / R)
Carrier frequency, after adjusting BPF
EE mode: INPUT condition 1
PB mode: FM PB IN = 660mV
P-P
f = 1.30MHz, 1.70MHz 1: 1 MIX,
The difference between the EE and PB line out
levels when input is DEV = DEV
L, R
(the frequency deviation given above)
No input, after automatic adjustment
NTSC carrier frequency
Lch
Rch
f
NOL
MHz
1.2905
1.2975
1.3045
f
NOR
MHz
1.6920
1.6990
1.7060
No input, after automatic adjustment
PAL carrier frequency
Lch
Rch
f
POL
MHz
1.3910
1.3980
1.4050
f
POR
MHz
1.7925
1.7995
1.8065
INPUT condition 1
Frequency deviation
Lch
Rch
DEV
L
±
kHz
43.0
49.0
55.0
DEV
R
±
kHz
44.5
50.5
56.5
INPUT condition 3 (f = 10kHz)
Maximum frequency deviation
Lch
Rch
DEVMax.
L
±
kHz
118
140
162
DEVMax.
R
±
kHz
118
140
162
FM OUT SW: FM L mode
FM OUT SW: FM R mode
Spectrum ratio of 2nd harmonic with
respect to fundamental
Lch: FM L mode, Rch: FM R mode
Spectrum ratio of 3nd harmonic with
respect to fundamental
Lch: FM L mode, Rch: FM R mode
FM output level
Lch
Rch
V
OFML
mV
P-P
300
355
410
V
OFMR
mV
P-P
310
365
420
DEV
L
=
±
50.0kHz, f = 1kHz
DEV
R
=
±
50.0kHz, f = 1kHz
Demodulation output level 1
Demodulation output level L / R difference
Demodulation output level 2
Lch
Rch
V
ODL
dBV
– 12.7
– 10.2
– 7.7
V
ODR
dBV
DEV
L
=
±
50.0kHz, f = 10kHz
Lch
V
ODL2
dBV
DEV
R
=
±
50.0kHz, f = 10kHz
Rch
V
ODR2
dBV
– 12.7
– 10.2
– 7.7
V
ODL
– V
ODR
—
V
OD
dB
– 1.6
0.0
+ 1.6
DEV
L
=
±
50.0kHz, f = 1kHz,
1
DEV
R
=
±
50.0kHz, f = 1kHz,
1
Demodulation distortion
Lch
Rch
THD
DL
%
—
0.12
0.35
THD
DR
%
—
0.13
0.35
Unmodulated
2
Demodulation noise level
Line output recording / playback
level difference
Lch
Rch
Lch
V
ONDL
dBV
—
– 98.0
– 86.0
V
ONDR
dBV
—
– 98.0
– 86.0
Lch
V
ODSWL
dB
—
– 20.0
– 19.0
Rch
V
ODSWR
dB
—
– 20.0
– 19.0
V
RPL
dB
– 1.2
0.0
+ 1.2
Rch
V
RPR
dB
– 1.2
0.0
+ 1.2
Carrier 2nd harmonic
Lch
Rch
f
2L
dB
—
– 53.0
– 40.0
f
2R
dB
—
– 48.0
– 40.0
Carrier 3rd harmonic
Lch
Rch
f
3L
dB
—
– 52.0
– 40.0
f
3R
dB
—
– 55.0
– 40.0
V
ODL
– 10.0
V
ODR
– 10.0
V
ODL
– 7.8
V
ODR
– 7.8
V
ODL
– 5.6
V
ODR
– 5.6
Demodulation SW noise level
AHSWPIN: 30Hz, 5V
P-P
FMPBIN: DEV. =
±
40kHz (f = 10kHz)
Relative ratio of actual values of f
C
= 3kHz,
– 48dB / oct. after passing through LPF, and f
C
= 20kHz, – 48dB/oct. after passing through LPF.
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