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Preliminary
4-93
RF2321
Rev A3 000713
4
(Download Bill of Materials from www.rfmd.com.)
Pin
Function
Description
Interface Schematic
1GND
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
2GND
Same as pin 1.
3RF IN
RF input pin. This pin is not internally DC blocked and thus requires an
external blocking capacitor suitable for the frequency of operation. The
input impedance of this pin is internally matched to 50
Ω using resistive
feedback.
4VCC
Supply connection. This pin should be bypassed with a suitable capac-
itor(s).
5RF OUT
RF output and bias pin. The output impedance of this pin is internally
matched to 50
Ω using resistive feedback. Because DC biasing is
present on this pin, a DC blocking capacitor should be used in most
applications (see application schematic).
See pin 3 schematic.
RF IN
RF OUT
VCC
1
2
3
5
4
100 pF
100 pF
RF IN
RF OUT
V
CC
1 nF
1
2
3
5
4
C2
100 pF
C1
100 pF
50
Ω µstrip
50
Ω µstrip
RF OUT
J2
RF IN
J1
P1-1
NC
P1
VCC
GND
1
2
3
P1-1
C3
1 nF
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