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부품번호 | ESW5210 기능 |
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기능 | 27MHz FSK Receiver | ||
제조업체 | ELAN Microelectronics | ||
로고 | |||
ESW5210/5211
27MHz FSK Receiver
Product
Specification
DOC. VERSION 1.0
ELAN MICROELECTRONICS CORP.
June 2008
Contents
Specification Revision History
Version
1.0 Initial Release Edition
Revision Description
Date
2000/06/05
iv • Product Specification (V1.0) 06.05.2008
4페이지 ESW5210/5211
27MHz FSK Receiver
6 Function Description
The ESW5210/5211 single-chip solution is a CMOS technology integrated circuit
intended for low cost FSK receiver application and to establish a frequency-agile RF
link. The device is capable of providing 10-channel receiver.
6.1 Mixer and Limiter
The mixer-oscillator (VCO) combination converts the input frequency (e.g., 27MHz)
down to 455KHz, where, after external bandpass filtering, most of the amplification is
done. The audio is recovered using a conventional quadrature FM detector. After
suitable bandpass filtering (ceramic or LC), the signal goes to the input of limiter
amplifier at Pin 8. The output of the limiter at Pin 11 drives a multiplier to detect the
FM. This is accomplished both internally (direct access), and externally through a
quadrature coil or discriminator. The other side of the limiter stages is decoupled at
Pins 9 and 10. The limiter IF amplifier typically has about 75dB of gain. Decoupling
capacitors should be placed close to the decoupling Pins 9 and 10 to ensure low noise
and stable operation.
A simple inverter OP amp is provided with an output at Pin 15 providing DC bias to be
input at Pin 14, and positive input at Pin 17 for reference voltage set. The filter can
be made with external impedance elements to discriminate between frequencies.
6.2 VCO
The circuit employed an LC-tank structure to achieve low-phase noise characteristic
where “L” is an off-chip high-Q inductor, and “C” is provided by a varactor with different
tuning ranges.
6.3 PLL
The PLL includes 64/65 prescaler, charge pump, PFD, N-A swallow counters, and
R-counter for the multi-channel applications. The channels are selected for
ESW5211 via mechanical switches of parallel BCD input. For ESW5210, the
channels can be easily set by an input pin CHCLK which directly selects the ROM
table addresses.
Product Specification (V1.0) 06.05.2008
(This specification is subject to change without further notice)
•3
7페이지 | |||
구 성 | 총 16 페이지수 | ||
다운로드 | [ ESW5210.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
ESW5210 | 27MHz FSK Receiver | ELAN Microelectronics |
ESW5211 | 27MHz FSK Receiver | ELAN Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |