參數(shù)資料
型號(hào)： BH7800K
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(hào)處理器
文件頁(yè)數(shù)： 8/13頁(yè)
文件大?。?/td> 174K
代理商： BH7800K
8
Video ICs
BH7800K
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
– 14.3
– 12.5
– 10.7
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]
(After BPF f
0
adjustment, V
IN
= 1320mV
P-P
, 1.30MHz, 1.70MHz MIX IN)
(INPUT: FM PB IN, OUTPUT: LINE OUT L / R)
[Recording
→
playback overall characteristics]
(PB···INPUT: FM PB IN, OUTPUT: LINE OUT L / R)
(EE···INPUT: LINE IN L / R, OUTPUT: LINE OUT L / R)
Carrier frequency, after adjusting BPF
EE mode: INPUT condition 1
PB mode: FM PB IN = 1320mV
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
1.2925
1.2975
1.3025
f
NOR
MHz
1.6940
1.6990
1.7040
No input, after automatic adjustment
PAL carrier frequency
Lch
Rch
f
POL
MHz
1.3930
1.3980
1.4030
f
POR
MHz
1.7945
1.7995
1.8045
INPUT condition 1
Frequency deviation
Lch
Rch
DEV
L
±
kHz
44.0
50.0
56.0
DEV
R
±
kHz
44.0
50.0
56.0
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 3rd harmonic with respect to
fundamental
Lch: FM L mode, Rch: FM R mode
FM output level
Lch
Rch
V
OFML
mV
P-P
310
355
410
V
OFMR
mV
P-P
320
365
420
DEV
L
=
±
50.0kHz, f = 1kHz
DEV
R
=
±
50.0kHz, f = 1kHz
Demodulation output level 1
Demodulation output level 2
Lch
Rch
V
ODL
dBV
– 12.4
– 10.2
– 8.0
V
ODR
dBV
DEV
L
=
±
50.0kHz, f = 10kHz
Lch
V
ODL2
dBV
DEV
R
=
±
50.0kHz, f = 10kHz
Rch
V
ODR2
dBV
– 12.4
– 10.2
– 8.0
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
– 85.0
V
ONDR
dBV
—
– 98.0
– 85.0
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
– 42.0
V
ODL
– 10.0
V
ODR
– 10.0
V
ODL
– 7.8
V
ODR
– 7.8
V
ODL
– 5.6
V
ODR
– 5.6
BPF L / R level difference NTSC
V
BPFN
dB
– 5.0
0.0
5.0
After automatic adjustment, NTSC
f = 1.505MHz, V
IN
= 400mV
P-P
After automatic adjustment, PAL
f = 1.605MHz, V
IN
= 400mV
P-P
BPF L / R level difference PAL
V
BPFP
dB
– 5.0
0.0
5.0
[FM BPF] (INPUT: FM PB IN, OUTPUT: BPF MONITOR L / R)
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