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E99215-TE

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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.

Absolute Maximum Ratings (Ta=25 °C)

• Supply voltage

14

V

• Operating temperature

Topr

–10 to +60

°C

• Storage temperature

Tstg

–50 to +125

°C

• Allowable power dissipation

700

mW

(CXA1691BM)

1000

mW

(CXA1691BS)

Recommended Operating Conditions

Supply voltage

2 to 7.5

V

(CXA1691BM)

2 to 8.5

V

(CXA1691BS)

Description

CXA1691BM/BS is a one-chip FM/AM radio IC

designed for radio-cassette tape recorders.

Features

• Small number of peripheral components.

• Built-in FM/AM select switch.

• Large output of AF amplifier.

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

FM/AM Radio

CXA1691BM

CXA1691BS

28 pin SOP (Plastic)

30 pin SDIP (Plastic)

CXA1691BM/BS

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