2-95
RF2129
Rev B4 000323
2
Pin
Function
Description
Interface Schematic
1VCC2
Bias supply pin for the first stage. A small tuning capacitor is required to
set the desired frequency response. External low frequency bypass
capacitors should be connected as shown in the application schematic
if no other low frequency decoupling is nearby.
2VCC2
Connected internally to pin 1.
See pin 1.
3NC
Not internally connected.
4RF IN
RF input. This input is DC coupled, so an external blocking capacitor is
required if this pin is connected to a DC path.
See pin 1.
5PC
Power control pin. For maximum power this pin should be 3.3V. A
higher voltage is not recommended. For less output power and reduced
idle current this voltage may be reduced.
6RF OUT
RF output and bias for the output stage. The power supply for the out-
put transistor needs to be supplied to this pin. This can be done
through a quarter-wave length microstrip line that is RF grounded at the
other end, or through an RF inductor that supports the required DC cur-
rents.
7RF OUT
Same as pin 6.
See pin 6.
8VCC1
Power supply pin for the bias circuits. External low frequency bypass
capacitors should be connected if no other low frequency decoupling is
nearby.
See pin 5.
Pkg
Base
GND
Ground connection. The backside of the package should be connected
to the ground plane through a short path, i.e., vias under the device
may be required.
Seepin 1and 6.
RF IN
BIAS
VCC2
PC
500
Ω
VCC1
To RF
Stages
RF OUT
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