TEA5591A Просмотр технического описания (PDF) - Philips Electronics

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TEA5591A

AM/FM radio receiver circuit

Philips Electronics 

Philips Semiconductors

AM/FM radio receiver circuit

Product specification

TEA5591A

GENERAL DESCRIPTION

The TEA5591A is a 24-pin integrated radio circuit, derived from the TEA5591 and is designed for use in AM/FM portable

radios and clock radios. The TEA5591A differs from the TEA5591 in that it has:

• Separate IF input pins for AM and FM

• A split-up AM-IF stage (for distributed selectivity)

• An LED driver indicator

The main advantage of the TEA5591A is its ability to operate over a wide range of supply voltages (1.8 to 15 V) without

any loss of performance.

The AM circuit incorporates:

• A double balance mixer

• A ‘one-pin’ oscillator with amplitude control operating in the 0.6 to 30 MHz frequency range

• A split-up IF amplifier

• A detector

• An AGC circuit which controls the IF amplifier and mixer.

The FM circuit incorporates:

• An RF input amplifier

• A double balanced mixer

• A ‘one-pin’ oscillator

• Two IF amplifiers (for distributed selectivity)

• A quadrature demodulator for a ceramic filter

• Internal AFC

Features

• LED AM/FM indicator

• A DC AM/FM switch facility

• Three separate stabilizers to enable operation over a wide range of supply voltages (1.8 to 15 V)

• All pins (except pin 10) are ESD protected

PACKAGE OUTLINE

24-lead shrink DIL; plastic (SOT234); SOT234-1; 1996 September 9.

February 1990

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