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Fabricante

TEA5759HL

Self Tuned Radio (STR)

Philips Electronics 

Philips Semiconductors

Self Tuned Radio (STR)

Product specification

TEA5757HL; TEA5759HL

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 (radio and tuning synthesizer

on one chip) means fewer external components with

regard to the communication between the radio and the

microcontroller (90% less components compared to the

digital tuning application of a radio IC with external PLL

tuning function) and a simple and small Printed-Circuit

Board (PCB)

• There will be no application considerations for the tuning

system, with regards to quality and high integration

level, since there will be no external 110 MHz buffers,

loop filter or false lock elimination

• 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 an 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)

• High input sensitivity

• Low output distortion

• Due to the new tuning concept, the tuning is

independent of the channel spacing.

GENERAL DESCRIPTION

The TEA5757HL; TEA5759HL is a 48-pin integrated

AM/FM stereo radio circuit including a novel tuning

concept. The radio part is based on the TEA5712.

The TEA5757HL is used in FM-standards in which the

local oscillator frequency is above the radio frequency

(e.g. european and american standards).

The TEA5759HL is the version in which the oscillator

frequency is below the radio frequency (e.g. Japanese

standard).

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

TEA5757HL

TEA5759HL

NAME

LQFP48

LQFP48

PACKAGE

DESCRIPTION

plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm

plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm

VERSION

SOT313-2

SOT313-2

2000 Feb 02

2

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