lt5502 Linear Technology Corporation, lt5502 Datasheet - Page 12
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lt5502
Manufacturer Part Number
lt5502
Description
400mhz Quadrature If Demodulator With Rssi
Manufacturer
Linear Technology Corporation
Datasheet
1.LT5502.pdf
(12 pages)
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LT5502
TYPICAL APPLICATIO
12
2.4GHz TO
RX INPUT:
2.5GHz
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com
SYNTHESIZER
FRONT END
MAIN
RX
1st LO,
2.12GHz
TO 2.22GHz
280MHz IF
SAW BP
FILTER
Example: 2.4GHz to 2.5GHz Receiver Application (RX IF = 280MHz)
3.3pF
U
120nH
22nF
3.3pF
6
7
LIMITER
LT5502
1
RSSI
12
15
13
LIMITER
1.8pF
SYNTHESIZER
2
IF
0.1 F
3,5,8,9,
14,20,21
Q MIXER
I MIXER
BUFFER
560MHz
2nd LO,
LO
2.7pF
1nF
30nH
0
90
100pF
18
V
CC
f/2
4,16,17,22
200
19
2V
LPF
LPF
1nF
30nH
BUFFER
BUFFER
2.7pF
STBY
EN
LINEAR TECHNOLOGY CORPORATION 2001
1
2
24
23
11
10
5502i LT/TP 0101 2K • PRINTED IN USA
OUTPUTS
5502 TA02
OUTPUTS
I
Q
PROCESSOR
BASEBAND
A/D
A/D