廬
TDK SEMICONDUCTOR CORP.
5503 DCR
Direct Conversion Receiver
Advanced Information
February 2001
DESCRIPTION
The 5503 is a low cost, high performance direct
conversion receiver (DCR) specifically designed for
digital wireless applications. The DCR architecture
provides a receiver design with fewer external
components than the conventional dual conversion
approach. The 5503 is designed to operate over an
input frequency range of 950 to 1450 MHz. The
device accepts an input signal in this frequency
range and down converts directly to baseband. The
local oscillator signal is generated by a completely
integrated phase lock loop that is fully
programmable through a standard serial port
interface.
FEATURES
鈥?/div>
Wideband I/Q demodulator
鈥?RF input 950 to 1450 MHz
鈥?External lowpass filter
- Integrated post-filter baseband drivers
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Integrated VCO and frequency synthesizer
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AGC Amplifier
APPLICATIONS
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Digital Satellite
鈥?/div>
VSAT Receivers
BLOCK DIAGRAM
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