Description

CXA1691BM/BS 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=500 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