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CXA1691AS

Sony Corporation
Part Number CXA1691AS
Manufacturer Sony Corporation
Description FM/AM Radio
Published Mar 27, 2005
Detailed Description CXA1691AM/AS FM/AM Radio For the availability of this product, please contact the sales office. Description CXA1691AM/AS...
Datasheet PDF File CXA1691AS PDF File

CXA1691AS
CXA1691AS

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


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