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| CMX994 Datasheet, PDF (10/61 Pages) CML Microcircuits – Local Oscillator | |||
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Direct Conversion Receivers
CMX994/CMX994A/CMX994E
5.2
5.2.1
Receiver
LNA
The following sections show plots and tables of the LNA input (S11) and output (S22) impedance. Separate
data is shown for the 50ï and 100ï output modes which are selected by LNAZO bit in the Rx Gain Register
(b3, $16; see section 7.7.1).
Note that at low frequencies capacitive loads on the LNA output are not recommended, a high-pass matching
network is preferred.
50⦠Mode
Figure 3 LNA S11 (50⦠Mode)
Figure 4 LNA S22 (50⦠Mode)
ï£ 2015 CML Microsystems Plc
Page 10 of 70
D/994_A_E/1
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