LA1824_09 Datasheet, PDF (9/10 Pages) Sanyo Semicon Device – Single Chip Tuner IC for Use in Radio/Cassette Products with Manual Tuning

Pin
number
Function
Quiescent
voltage (V)
AM FM
21 VCC2
4.5 4.4
22 FM-RF output 4.5 4.4
24 FM-RF input
0 1.0
23 GND2
00
LA1824
Equivalent circuit
Remarks
R
FM-FE block VCC
21
4
Power is supplied pin 4 (VCC1)
ILA00324
via external resistor (10 Ω)
22
24
Rin
21
ILA00325
Connect the FM-RF coil between
this pin and pin 21 (VCC2)
Rin = 500 Ω
FM-FE block ground
FM Characteristics
0
--20
Signal
--40
AM out
--60
--80 ^VCC=4.5V
fc=98MHz
Noise
fm=1kHz, 22.5kHz dev
--100 ^AM=30%mod
--20
0
20
40
60
80 100
Ant input -- dBµV EMF
AM Characteristics
0
VCC=4.5V
fc=1000kHz
fm=1kHz, 30%mod
--20
Signal
120 140
ILA00390
--40
--60
Noise
--80
--100
0
20
40
60
80
100
120
140
Ant input -- dB/m
ILA00392
FM Characteristics
5
VCC=4.5V
fc=98MHz
fm=1kHz
4
3
2
THD(75k)
1
0
--20
0
THD(22.5k)
20
40
60
80 100 120 140
Ant input -- dBµV EMF
ILA00391
AM Characteristics
5
2.5
VCC=4.5V
fc=1000kHz
fm=1kHz, 30%mod
4
2.0
3
1.5
2
VAGC
1
1.0
THD80%
0.5
0
0
0
20
40
60
80
100
120
140
Ant input -- dB/m
ILA00393
No.6855-9/10