CXA1538N SONY [Sony Corporation], CXA1538N Datasheet

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CXA1538N

Manufacturer Part Number
CXA1538N
Description
FM STEREO/AM RADIO
Manufacturer
SONY [Sony Corporation]
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
CXA1538N
Manufacturer:
SONY/索尼
Quantity:
20 000
For the availability of this product, please contact the sales office.
Block Diagram
Description
bipolar ICs designed for FM stereo/AM radios.
These include an FM/AM front end, FM/AM IF
amplifier, FM/AM detection output and FM stereo
demodulator output.
Features
• Low current consumption
• Built-in LED drive circuit for tuning
• Built-in LED drive circuit for stereo indicator
• Built-in muting circuit for the FM band
• Few external parts
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
• Operating temperature
• Storage temperature
• Junction temperature
• Allowable power dissipation
The CXA1538M/N/S is high performance one-chip
(In FM mode I
V
FM Stereo/AM Radio
CC
=6.0 V)
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
D
P
=11.0 mA, in AM mode 8.5 mA,
D
M/ST
LPF1
GND
PLL
SW
30
1
VCO
CXA1538M
CXA1538N
CXA1538S
PILOT
Tjmax
LPF2
LPF 2
DET
PLL
Topr
Tstg
29
V
2
ST
IND
CC
PILOT
LPF2
MPX
REG
DET
28
3
1/2 COUNTER
–55 to +150
CHECK
–10 to +60
VCO
VCO
IND
DECODE AMP
ST
27
4
MULTIPLEX
REGULATOR
1050
125
500
410
14
DISCRI MUTE
OUT
Rch
26
FM
5
RIPPLE FILTER
PD 2
OUT
PD 1
Lch
25
6
mW
mW
mW
OSC
V
°C
°C
°C
AM
24
7
CC
V
—1—
CXA1538M/N/S
AMP
MUTING
BU
RIPPLE
FILTER
AFC
23
8
AUTO
BLEND
Recommended Operating Conditions
Structure
AFC 1
OSC
AGC
Supply voltage
Bipolar silicon monolithic IC
REGULATOR
FM
22
30 pin SOP (Plastic)
9
DC
AMP
AFC 2
REG
AGC
21
10
CXA1538M
AMP
AMP
DC
BU
DETUNE
MUTING
CONTROL
PD : PHASE DETECTOR
BU : BUFFER
FE : FRONT END
GND
FM
RF
20
11
AM RF
30 pin SSOP (Plastic)
TUNE
IND
FM FE
AM FE
19
12
IN
TUNING IND
AM IF/DET
FM IF/
DISCRI
FM RF
FM IF
13
18
IN
IN
CXA1538N
AM IF
GND
DET : DETECTOR
IND : INDICATOR
14
17
IN
FE
V
FE OUT
SELECT
FM/AM
BAND
30 pin SDIP (Plastic)
CC
16
15
CXA1538S
2 to 9
E93313D8X
V

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CXA1538N Summary of contents

Page 1

... PILOT ST Rch Lch V RIPPLE AGC CC DET IND OUT OUT FILTER AFC 1 LPF2 VCO CHECK —1— CXA1538M CXA1538S 30 pin SDIP (Plastic) CXA1538N 30 pin SSOP (Plastic FM/AM FE OUT REG GND AMP ...

Page 2

Pin Description and Equivalent Circuit Pin Voltage (V) No. Symbol PLL LPF1 0.97 0.97 0.97 0.97 29 PLL LPF2 PILOT 2 0.95 0.95 0.95 0.95 DET LPF1 PILOT 3 0.95 ...

Page 3

Pin Voltage (V) No. Symbol GND MUTE 0.05 0.01 0.05 0.01 12 TUNE IND 1.6 1.6 4.5 4 1.35 0 1.35 0 BAND ...

Page 4

Pin Voltage (V) No. Symbol REG 1.25 1.25 1.25 1.25 23 AFC 22 FM OSC 1.25 1.25 1.25 1. OSC 1.25 1.25 1.25 1. DISCRI 2.30 ...

Page 5

Electrical Characteristics Test Symbol Item Point Circuit current ( signal 1 D Circuit current ( signal 2 D Separation when V Separation SEP V 50 dBµV, 10.7 MHz, 1 kHz, D 22.5 ...

Page 6

CXA1538M/N/S ...

Page 7

CXA1538M/N/S ...

Page 8

SIGNAL (STEREO) –10 –20 –30 –40 –50 NOISE(MONO) –60 DISTORTION(MONO –10 –20 –30 –40 –50 – Vin3=90dB V 10.7MHz fmod = 1kHz 22.5kHz dev Pilot ...

Page 9

Coil data AM OSC Core diameter ø 0. UEW Equivalent to L-5K7H5 R12-1684X, Mitsumi Electric Co., Ltd 7TRS-8441 TOKO Co., Ltd. 5mm 6mm3.5t AM IFT Core diameter ø ...

Page 10

Notes on Usage 1. VCO free run frequency adjustment method As this IC has built-in oscillation capacitance, the oscillation frequency can be controlled with an external resistor. 1) VCO Adjustment Method Pin 4 is the stereo indicator and VCO check ...

Page 11

MPX circuit 1) MPX load resistance When power supply voltage is over 3 V, change the MPX load resistor R6, R7 from 3.3 kΩ to 6.8 kΩ. In this case, the output level is increased by about 6 dB. ...

Page 12

FM discriminator For FM detection, the quadrature detection system is adopted phase shifter, a ceramic resonator (CF 3 discriminator) applies to achieve adjustment-free detection. Though the sensitivity and selectability will be slightly affected, the discriminator can be ...

Page 13

CXA1538M CXA1538S —13— CXA1538M/N/S ...

Page 14

... Package Outline Unit : mm CXA1538M 30 1 SONY CODE EIAJ CODE JEDEC CODE CXA1538N + 0.1 0.22 – 0.05 NOTE: Dimension “ ” does not include mold protrusion. SONY CODE EIAJ CODE JEDEC CODE NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). ...

Page 15

CXA1538S 30 1 SONY CODE EIAJ CODE JEDEC CODE NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). 30PIN SDIP (PLASTIC) + 0.4 26.9 – 0 1.778 Two kinds of package surface: 1.All mat ...

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