RF2304
Pin
1
2
3
Function
GND
GND
RF IN
Description
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Same as pin 1.
DC coupled RF input. A broadband impedance match is produced by inter-
nal shunt resistive feedback. The DC level is approximately 200mV. If a DC
path exists in the connected circuitry, an external DC-blocking capacitor is
required to properly maintain the DC operating point.
Same as pin 1.
Same as pin 1.
RF output. A broadband impedance match is produced by internal shunt
resistive feedback. The DC connection to the power supply is provided
through an external chip inductor having greater than 150Ω reactance at
the operating frequency. An external DC-blocking capacitor is required if
the following circuitry is not DC-blocked.
V
DD
RF OUT
Interface Schematic
4
5
6
GND
GND
RF OUT
RF IN
7
VDD2
8
NC
Bias control connection. This pin is normally connected to the power sup-
ply, but can be used to switch the amplifier on and off by switching
between power supply voltage and ground. This pin sinks approximately
600μA when connected to V
DD
, and sources less than 10μA when
grounded.
No connection.
Application Schematic
V
DD
1 nF
1
2
100 pF
RF IN
3
4
6
100 pF
5
8
7
L1
RF Choke
Rev A7 DS060908
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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RFMD [ RF MICRO DEVICES ]
