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Sony Semiconductor Electronic Components Datasheet

CXA1691AM Datasheet

FM/AM Radio

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CXA1691AM/AS
FM/AM Radio
For the availability of this product, please contact the sales office.
Description
CXA1691AM/AS is a one-chip FM/AM radio IC
designed for radio-cassette tape recorders.
CXA1691AM
28 pin SOP (Plastic)
CXA1691AS
30 pin SDIP (Plastic)
Features
Small number of peripheral components.
Low current consumption (VCC=3 V)
For FM : ID=5.8 mA (Typ.)
For AM : ID=4.7 mA (Typ.)
Built-in FM/AM select switch.
Large output of AF amplifier.
VCC=6 V, EIAJ output=450 mW (Typ.)
when load impedance 8
Function
FM section
RF amplifier, Mixer and OSC
(incorporating AFC variable capacitor).
IF amplifier
Quadrature detection
Tuning LED driver
AM section
RF amplifier, Mixer and OSC (with RF AGC)
IF amplifier (with IF AGC)
Detector
Tuning LED driver
AF section
Electronic volume control
FM muting
Absolute Maximum Ratings (Ta=25 °C)
Supply voltage
VCC 14 V
Operating temperature Topr –10 to +60 °C
Storage temperature Tstg –50 to +125 °C
Allowable power dissipation
PD 700 mW
(CXA1691AM)
PD 1000 mW
(CXA1691AS)
Recommended Operating Conditions
Supply voltage
VCC 2 to 7.5 V
(CXA1691AM)
VCC 2 to 8.5 V
(CXA1691AS)
Structure
Bipolar monolithic IC
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.
—1—
E98425-TE


Sony Semiconductor Electronic Components Datasheet

CXA1691AM Datasheet

FM/AM Radio

No Preview Available !

Block Diagram
CXA1691AM
CXA1691AM/AS
AF
GND OUT
28 27
Ripple AF
VCC FILTER IN
26 25 24
DET AFC AFC IF
OUT AGC AGC GND METER NC
23 22 21 20 19 18
FM
IF IN
17
FM/AM
AM BAND
IF IN SELECT
16 15
AF POWER AMP
AM IF DET AGC
TUNING METER
AM FE
FM
DISCRIMINATOR
FM FE
FM IF
1 2 3 4 5 6 7 8 9 10 11 12 13 14
MUTE FM NF VOL AM AFC FM Reg FM AM NC FM FE FM/AM
DISCRI
OSC
OSC OUT RF RF IN
RF IN GND FE OUT
CXA1691AS
AF
GND GND OUT
30 29 28
Ripple AF
VCC FILTER IN
27 26 25
DET AFC AFC IF
OUT AGC AGC GND METER NC
24 23 22 21 20 19
FM/AM
FM AM BAND
IF IN IF IN SELECT
18 17 16
AF POWER AMP
AM IF DET AGC
TUNING METER
AM FE
FM
DISCRIMINATOR
FM FE
FM IF
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
MUTE NC FM NF VOL AM AFC FM Reg FM AM NC FM FE FM/AM
DISCRI
OSC
OSC OUT RF RF IN
RF IN GND FE OUT
—2—


Part Number CXA1691AM
Description FM/AM Radio
Maker Sony Corporation
Total Page 11 Pages
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1 CXA1691AM FM/AM Radio
Sony Corporation
2 CXA1691AS FM/AM Radio
Sony Corporation





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