5504DCR Datasheet, PDF (1/11 Pages) List of Unclassifed Manufacturers – Direct Conversion Receiver

DESCRIPTION
The 5504 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 5504 is designed to operate over an
input frequency range of 950 to 2150 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.
5504 DCR
Direct Conversion Receiver
Advanced Information
FEATURES
April 2000
• Wideband I/Q demodulator
– RF input 950 to 2150 MHz
– External lowpass filter
- Integrated post-filter baseband drivers
• Integrated VCO and frequency synthesizer
• AGC Amplifier
APPLICATIONS
• Digital Satellite
• VSAT Receivers
BLOCK DIAGRAM
AGC
RFp
RFn
Dclk
Din
XTLP
XTLN
FILN
EON
Rext
Serial
Port
Xtal
Osc.
Power
0
Splitter
90
R3 R2 R1 R0
Divide
10-bit
C1 C0
Charge
Pump
Phase
Detect
Divide
11-bit
216............. 26
25............. 20
Modulo
6-bit
Div
32/33
IO2
VCO1 VCO0
VCO
QO2
RSHP
RSHN
RSLP
RSLN
1