Preliminary
RF2371
Pin Function Description
Interface Schematic
1
RF IN
RF input pin. This pin is not internally DC blocked and requires an
external blocking capacitor.
2
GND1
Ground connection for the LNA. Keep traces physically short and con-
nect immediately to ground plane for best performance.
3
GND2
Ground connection for the bias circuits.
4
IPSET
This pin selects the internal current setting when CMOS level “low”, and
the external current setting when this pin is CMOS level “high”.
5
ENABLE Power down control. This is a CMOS input. When this pin is CMOS
“high” the device is enabled. When the level is CMOS “low” the device
is shut off and a controlled attenuator is turned on.
6
VCC
Power supply for the bias circuits.
7
ISET
This pin sets the current for the device.
4
8
RF OUT RF output pin. Bias for the LNA is provided through this pin, hence it
should be connected to VCC through an inductor.
Rev A2 010205
4-223