RF2304_1 Datasheet, PDF (3/8 Pages) RF Micro Devices – GENERAL PURPOSE LOW-NOISE AMPLIFIER

RF2304
Pin Function Description
Interface Schematic
1
GND
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
2
GND
Same as pin 1.
3
RF IN
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.
4
GND
Same as pin 1.
5
GND
Same as pin 1.
6
RF OUT
RF output. A broadband impedance match is produced by internal shunt
resistive feedback. The DC connection to the power supply is provided
VDD
through an external chip inductor having greater than 150Ω reactance at
RF OUT
the operating frequency. An external DC-blocking capacitor is required if
the following circuitry is not DC-blocked.
RF IN
7
VDD2
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.
8
NC
No connection.
Application Schematic
RF IN
1
2
100 pF
3
4
VDD
1 nF
8
7
L1
RF Choke
6
100 pF
5
Rev A7 DS060908
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
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