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TEA5757HL датащи(PDF) 2 Page - NXP Semiconductors

номер детали TEA5757HL
подробное описание детали  Self Tuned Radio STR
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA5757HL датащи(HTML) 2 Page - NXP Semiconductors

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2000 Feb 02
2
Philips Semiconductors
Product specification
Self Tuned Radio (STR)
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
PACKAGE
NAME
DESCRIPTION
VERSION
TEA5757HL
LQFP48
plastic low profile quad flat package; 48 leads; body 7
× 7 × 1.4 mm
SOT313-2
TEA5759HL
LQFP48
plastic low profile quad flat package; 48 leads; body 7
× 7 × 1.4 mm
SOT313-2


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