CXA1691BM

FM/AM Radio

Description

/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 OSCincorporating 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