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Low-Noise, 2.5GHz
Downconverter Mixer
___________________________________________________Typical Operating Circuit
1pF
RF
INPUT
RF = 1.95GHz
27nH
1 LGND
SHDN 10
1000pF
3.3nH
1pF
3 RFIN
0.5pF
MAX2690
500Ω
VCC
0.1pF
1000pF
4 RFBYP
1000pF
5
VCC
GND
LO
2
6
LO
INPUT
ROPTIONAL
(SEE TEXT)
1000pF
IFOUT+ 9
IFOUT- 8
GNDLO
7
500Ω
100Ω
VCC
220nH
220nH
VCC
SHUTDOWN
CONTROL
1000pF
IF OUTPUT
TO IF FILTER
IF = 200MHz
1000pF
_______________________________________________________________________________________ 9