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參數(shù)資料
| 型號： | 935174080518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 27/35頁 |
| 文件大?。?/td> | 1008K |
| 代理商： | 935174080518 |
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Product Information
TEA5757; TEA5759;
Self Tuned Radio
(STR)
Information as of 2001-11-12
Stay informed
Download datasheet
Applications
Blockdiagram
Support & tools
Parametrics
Description
The TEA5757; TEA5759 is a 44-pin integrated AM/FM stereo radio circuit including a novel tuning
concept. The radio part is based on the TEA5712.
The TEA5757 is used in FM-standards in which the local oscillator frequency is above the radio frequency
(e.g. European and American standards).
The TEA5759 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.
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
q
The tuning quality is superior and requires no IF-counter for stop-detection; it is insensitive to ceramic
filter tolerances
q
In combination with the microcontroller, fast, low-power operation of preset mode, manual-search,
auto-search and auto-store are possible
q
The local (internal) controller function facilitates reduced and simplified microcontroller software
q
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
q
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
q
Philips Semiconductors; TEA5757; TEA5759; Self Tuned Radio (STR)
file:///G|/imaging/BITTING/mail_pdf/cpl_rework/v1.html (1 of 3) [1/9/2002 11:54:58 AM]
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