RF2310
Pin
1
Function Description
Interface Schematic
Power supply pin. An external bypass capacitor is recommended. The
VCC
VCC
total supply current is shared between this pin and pin 8 (through the
inductor).
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
2
GND
To achieve the performance as specified, and to minimize instability, it
is recommended to have a local ground plane under the device, as
shown in the evaluation board layout.
Same as pin 2.
3
4
GND
RF IN
4
RF input pin. This pin is NOT internally DC-blocked. A DC-blocking
capacitor, suitable for the frequency of operation, should be used in
most applications. DC-coupling of the input is not allowed, because this
will override the internal feedback loop and cause temperature instabil-
ity.
Bias
RF IN
Same as pin 2.
5
6
7
8
GND
GND
GND
Same as pin 2.
Same as pin 2.
RF output and bias pin. Biasing is accomplished with an external choke
RF OUT
RF OUT
inductor to V that provides high impedance at the operating fre-
CC
quency. Because DC is present on this pin, a DC-blocking capacitor,
suitable for the frequency of operation, should be used in most applica-
tions. The supply side of the bias network should also be well
bypassed.
Application Schematic
VCC = 5V
100 nF
22 pF
100 nH
RF OUT
1
2
3
4
8
7
6
5
22 pF
22 pF
RF IN
Rev C5 010717
4-77
RFMD [ RF MICRO DEVICES ]
