BA1451F データシートの表示（PDF） - ROHM Semiconductor
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BA1451F Datasheet PDF : 8 Pages
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Audio ICs
10.80
10.75
10.70
10.65
10.60
10.55 3
4
RBW=20kΩ, VIN=100dBµ
Ta=25˚C
56
7
8
9
POWER SUPPLY VOLTAGE : Vcc (V)
Fig.5 FM bandwidth vs.
power supply voltage
10
S+D+N
3.0
0
−10
S / N=20dB
10 −20
9
2.0
VAGC
8 −30
7
6 −40
5
VOUT=5V,
N
1.0
4
−50 fIN=1000kHz,
3
fm=1kHz
D+N (80%)
2 −60 MOD=30%,
1
Ta=25˚C
D+N (30%)
0
−70
−20
0
LED ON
50
0
100 120
INPUT VOLTAGE : VIN (dBµ)
Fig.7 AM input / output characteristics
10
0
−10
10 −20
−30
−40
5
−50
VO
VCC=5V
fIN=1000MHz
VIN=74dBµ
MOD=30%
Ta=25˚C
D+N (80%)
−60
D+N (30%)
0
−70 50 100 200 500 1k 2k 5k 10k 20k
FREQUENCY : fm (Hz)
Fig.9 AM detector output and
THD vs. frequency
BA1451F
60
2
50
SEP
L→R
40
R→L
30
1
20
10
Vcc=5V
fIN=10.7MHz
VIN=100dBµ
∆f=±22.5kHzdev
pilot=±7.5kHzdev
Ta=25˚C
THD
MAIN R
L
SUB
MONO
0
0 50 100 200 500 1k 2k 5k 10k 20k
FREQUENCY : fm (Hz)
Fig.6 Channel separation and
THD vs. frequency
100 10 100
90 9 90
Vo
80 8 80
70 7 70
fIN=1000kHz,
60 6 60 VIN=74dBµ,
MOD=30%
50
5 50
fm=1kHz,
Ta=25˚C
40 4 40
30 3 30
TUNED ON
20 2 20
10 1 10
00
03
4
Q.S.
D+N (80%)
D+N (30%)
5
67
89
POWER SUPPLY VOLTAGE : VCC (V)
Fig.8 AM characteristics vs.
power suppy voltage
!External dimensions (Units : mm)
15.0 ± 0.2
24
13
1
12
1.27
0.4 ± 0.1
0.3Min.
0.15
SOP24
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