LA1837_09 Datasheet, PDF (8/9 Pages) Sanyo Semicon Device – For Home Stereo IC with Electronic Tuning Support Single-Chip IC

LA1837
SD Sensitivity Adjustment Characteristics
700
26
28
600
500
400
300
200
100
0
0
24
6
8 10 12 14 16 18 20
Radj -- kΩ
AM THD / VSM Characteristics
5.0 _{VCC = 9V, fc = 1MHz}
4.5
fm =1kHz, 30%mod
S/N (80dBμ) = 58dB
4.0
3.5
3.0
2.5
2.0
1.5
1.0
THD = 80%mod
0.5
0
THD = 30%mod
--20
0
20
40
60
80 100 120 140
Input -- dBμ
AM Detector Output Frequency Characteristics (2)
0
R
24
22
--5
0.01μF
--10
--15
R
=
10k^Ω
R=
33k^Ω
R
=
18kΩ
--20
--25
--30
--35
--40
0.01 ^{2 3 5 7} 0.1 ^{2 3 5 7} 1.0 ^{2 3 5 7} 10 ²
Frequency, fm -- kHz
Separation vs. Ambient Temperature Characteristics
90
S/N Mono
80
70
S/N Stereo
60
Sep-R
50
Sep-L
40
30
20
10
0
--40
--20
0
20
40
60
80
100
Ambient temperature, Ta -- °C
Overall AM Characteristics
0
--10
Out
--20
--30
--40
--50
--60
VCC = 9V
--70
fc = 1MHz
fm = 1kHz, 30%mod
Noise
S/N (80dBμ) = 58dB
--80
--20
0
20
40
60
80 100 120 140
Input -- dBμ
AM Detector Output Frequency Characteristics (1)
0
R
24
22
--5
C
--10
--15
--20
--25
--30
--35
--40
0.01 ^{2 3 5 7} 0.1 ^{2 3 5 7} 1.0 ^{2 3 5 7} 10 ²
Frequency, fm -- kHz
Distortion vs. Ambient Temperature Characteristics
1.0
7
5
3
THD sub
THD Mono
2
THD st
THD Main
0.1
--40
--20
0
20
40
60
80
100
Ambient temperature, Ta -- °C
No.5688-8/9