CXA1538 Sony Corporation, CXA1538 Datasheet - Page 2

• Manufacturer Part Number: CXA1538
• Description: FM STEREO/AM RADIO
• Manufacturer: Sony Corporation

Pin Description and Equivalent Circuit
No.
29
10
1
2
3
4
5
6
7
8
9
PLL LPF1
PLL LPF2
PILOT
DET LPF1
PILOT
DET LPF2
ST IND
VCO CHECK
Rch OUT
Lch OUT
V
Ripple
FILTER
AGC/AFC1
AGC/AFC2
CC
Symbol
0.97 0.97 0.97 0.97
0.95 0.95 0.95 0.95
0.95 0.95 0.95 0.95
0.66 0.66 1.5 1.5
0.66 0.66 1.5 1.5
1.32 1.15 1.32 1.15
1.15 1.47 1.15 1.47
V
FM AM FM AM
1.6 1.6 4.5 4.5
3.0 3.0 6.0 6.0
2.7 2.7 4.0 4.0
CC
Pin Voltage (V)
=3 V V
CC
=6 V
26k
3
2
29
5
17k
8
3.25k
—2—
25k
Equivalent circuit
22k
6k
9
50k
1
10
MPX REG
26k
140k
17k
33k
MPX REG
4
VCO
6
LPF for PLL
LPF’s C (1µF) for PILOT DET
inserted between pins 2 and 3
Stereo indicator drive circuit
and output for VCO check
Stereo Rch output pin
Stereo Lch output pin
Supply pin
Ripple filter
AFC pin in J band, determines time
constant of AGC in AM (depending on
external capacitor).
AFC pin in W band, determines time
constant of AGC in AM (depending
on external capacitor).
Description
CXA1538M/N/S