DESCRIPTION

The TDA 7220 is a monolithic integrated circuit in a 16-lead dual in-line plastic package designed for use in 3V, 4.5V and 6V portable AM-FM radio receivers. The functions incorporated are :

AM Section

- Preamplifier and double balanced mixer with AGC

- On pin local oscillator

- IF amplifier with internal AGC

- Detector and audio preamplifier

FM SECTION

- IF amplifier and limiter

- Quadrature detector

- Audio preamplifier

.OPERATING SUPPLY VOLTAGE : 1.5 TO 6V

.HIGH SENSITIVITY AND LOW NOISE

.LOW BATTERY DRAIN

.VERY LOW TWEET

.HIGH SIGNAL HANDLING

.VERY SIMPLE DC SWITCHING OF AM-FM

.AM SECTION OPERATES UP TO 30MHz