TEA5762H Просмотр технического описания (PDF) - Philips Electronics

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TEA5762H

Self Tuned Radio (STR)

Philips Electronics 

Philips Semiconductors

Self Tuned Radio (STR)

Product specification

TEA5762

FEATURES

• The tuning system has an optimized IC partitioning both

from application (omitting interferences) and flexibility

(removable front panel option) point of view: the tuning

synthesizer is on-chip with the radio

• The tuning quality is superior and requires no IF-counter

for stop-detection; it is insensitive to ceramic filter

tolerances

• In combination with the microcontroller, fast, low-power

operation of preset mode, manual-search, auto-search

and auto-store are possible

• The local (internal) controller function facilitates reduced

and simplified microcontroller software

• The high integration level means fewer external

components with regard to the communication between

the radio and the microcontroller and a simple and small

Printed-Circuit Board (PCB)

• The inherent FUZZY LOGIC behaviour of the Self

Tuned Radio (STR), which mimics hand tuning and

yields a potentially fast yet reliable tuning operation

• The level of the incoming signal at which the radio must

lock is software programmable

• Two programmable ports

• FM-on/off port to control the external FM front-end

• High selectivity with distributed IF gain

• Soft mute

• Signal dependent stereo-blend

• High impedance MOSFET input on AM

• Wide supply voltage range of 2.5 to 12 V

• Low current consumption 18 mA at AM and FM

(including tuning synthesizer for AM)

• Low noise figure

• Low output distortion

• Due to the new tuning concept, the tuning is

independent of the channel spacing.

GENERAL DESCRIPTION

The TEA5762 is a 44-pin integrated AM-radio and FM-IF

and demodulator part including a novel tuning concept.

The radio part is based on the TEA5712.

It is designed for the use with an external FM front-end.

The new tuning concept combines the advantages of hand

tuning with electronic facilities and features. User

‘intelligence’ is incorporated into the tuning algorithm and

an improvement of the analog signal processing is used for

the AFC function.

ORDERING INFORMATION

TYPE

NUMBER

TEA5762H

NAME

QFP44

PACKAGE

DESCRIPTION

plastic quad flat package; 44 leads (lead length 1.3 mm);

body 10 × 10 × 1.75 mm

VERSION

SOT307-2

1999 Aug 04

2

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