la2110 Sanyo Semiconductor Corporation, la2110 Datasheet - Page 6

• Manufacturer Part Number: la2110
• Description: Fm Noise Canceler For Car Radios
• Manufacturer: Sanyo Semiconductor Corporation

Sample Application Circuit : LA2110 & LA3375
Note : When using the sample application circuit :
1. Separation adjustment is performed with 10kΩ variable resistance in low-pass filter.
2. Change noise detection sensitivity control Rs to an adequate value for strong or medium electric field.
3. Adjust noise AGC with CY, RY for effective noise suppression in a medium or weak electric field.
4. Adjust pilot cancel degree with variable resistance of 50kΩ connected to LA2110 pin 15.
5. By changing the 1μF capacitor between LA3375 pin 11 and 12, pilot cancel follow-up response time can be changed.
22μF
But if the value is decreased, distortion factor, etc. will be adversely affected.
80
70
60
50
40
30
20
10
C Y
0
100
+
input
2200pF
2
R Y
47kΩ
+
4.7μF
3
100kΩ
100μF
+
0.01μF
5
6.8kΩ
Frequency, f – Hz
7
+V CC
Sep – f
1k
11
13
15
3300pF
1
3
5
7
9
LA2110
50kΩ
2
10
12
14
16
2
4
6
8
0.01μF
6800pF
3
5
5.6kΩ
3.9kΩ
4.7kΩ
Rs
V CC = 10V
V IN = 0.3V
270pF 270pF 270pF 270pF
68pF 1200pF 680pF 680pF
22kΩ
7 10k
4.7μF
+
4.7kΩ
2.7kΩ
2
LA2110
4.7kΩ
2.2kΩ
20kΩ
10kΩ
0.047μF
2.2kΩ
0.033μF
80
70
60
50
40
30
20
10
0
0
2.2kΩ
13
15
11
1
3
5
7
9
LA3375
0.2
polyester
film cap
1000pF
10
12
14
16
2
4
6
8
Input voltage, V IN – V
Sep – V IN
0.4
0.01μF
1μF
2.2μF
3.3μF
10kΩ
12kΩ
0.6
+V CC
1kΩ
V CC = 10V
f = 1kHz
0.8
output
No.855-6/7
L
R
1.0