BA1451F
Audio ICs
3
4
5
6
7
8
9
10.80
10.75
10.70
10.65
10.60
10.55
POWER SUPPLY VOLTAGE : Vcc (V)
R
BW
=20k
Ω
, V
IN
=100dB
µ
Ta=25˚C
FM BAND WIDTH : f
IN
(MHz)
Fig.5 FM bandwidth vs.
power supply voltage
TOTAL HARMONIC DISTORTION : THD (%)
CHANNEL SEPARATION : SEP (dB)
50
40
30
20
1
10
0
2
0
FREQUENCY : fm (Hz)
50
100 200 500
1k
2k
5k 10k 20k
SEP
THD
Vcc=5V
f
IN
=10.7MHz
V
IN
=100dB
µ
∆
f=±22.5kHzdev
pilot=±7.5kHzdev
Ta=25˚C
L
→
R
R
→
L
60
MAIN
R
L
SUB
MONO
Fig.6 Channel separation and
THD vs. frequency
Fig.7 AM input / output characteristics
10
0
−
10
−
20
−
30
−
40
−
50
−
60
−
70
−
20
0
50
100
120
TOTAL HARMONIC DISTORTION : THD (%)
OUTPUT VOLTAGE : V
O
(dB)
INPUT VOLTAGE : V
IN
(dB
µ
)
V
OUT
=5V,
f
IN
=1000kHz,
f
m
=1kHz
MOD=30%,
Ta=25˚C
S+D+N
V
AGC
N
D+N (80%)
D+N (30%)
0
1
2
3
4
5
6
7
8
9
10
S / N=20dB
0
1.0
2.0
3.0
LED ON
V
AGC
(
V)
f
IN
=1000kHz,
V
IN
=74dB
µ,
MOD=30%
f
m
=1kHz,
Ta=25˚C
TOTAL HARMONIC DISTORTION : THD (%)
Q.S. , TUNED ON : (dB
µ
)
OUTPUT VOLTAGE : Vo (mVrms)
POWER SUPPLY VOLTAGE : V
CC
(V)
100
90
80
70
60
50
40
30
20
10
0
10
9
8
7
6
5
4
3
2
1
0
3
4
5
6
7
8
9
Vo
TUNED ON
Q.S.
100
90
80
70
60
50
40
30
20
10
0
Fig.8 AM characteristics vs.
power suppy voltage
D+N (80%)
D+N (30%)
!
!
!
!
External dimensions
(Units : mm)
Fig.9 AM detector output and
THD vs. frequency
FREQUENCY : fm (Hz)
TOTAL HARMONIC DISTORTION : THD (%)
AM DETECTOR OUTPUT VOLTAGE : V
O
(
dBm)
10
0
−
20
−
40
−
50
−
60
−
70
−
10
−
30
50
100
200
500
1k
2k
5k
10k 20k
V
O
D+N (80%)
D+N (30%)
V
CC
=5V
f
IN
=1000MHz
V
IN
=74dB
µ
MOD
=30%
Ta
=25˚C
0
5
10
SOP24
0.15
0.11
1.8 ± 0.1
5.4 ± 0.2
7.8 ± 0.3
0.4 ± 0.1
15.0 ± 0.2
0.3Min.
0.15 ± 0.1
24
1
13
12
1.27
