LA1838 Datasheet, PDF (8/9 Pages) Sanyo Semicon Device – Single-Chip Home Stereo IC with Electronic Tuning Support

LA1838
SD Band Adjustment Characteristics
350
300
250
200
150
100
50
00 _{2 4 6 8 10 12 14 16 18 20}
Radj — kΩ
5.0 ^{AM THD and VSM Characteristics}
VCC = 9 V
4.5 fc = 1 MHz
fm = 1 kHz , 30%mod
4.0
3.5
3.0
VSM
2.5
2.0
1.5
1.0
THD = 80%mod
0.5
-020 0
THD = 30%mod
20 40 60 80 100 120 140
Input, — dB
AM Detector Output Frequency Characteristics (2)
0
R
24
22
-5
R = 10 k
0.01 µF
-10
-15
R = 33 k
R = 18 k
-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
80
S/N Mono
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
Out
-10
-20
-30
-40
-50
-60
Noise
-70
VCC = 9 V
fc = 1 MHz
fm = 1 kHz , 30%mod
-8-020
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
THD sub ^{THD Mono}
3
2
THD st THD Main
0.1
-40 -20
0
20
40
60
80 100
Ambient temperature, Ta — °C
No. 5888-8/9