RF2310 データシートの表示（PDF） - RF Micro Devices
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RF2310 Datasheet PDF : 10 Pages
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RF2310
Pin Function Description
Interface Schematic
1
VCC
Power supply pin. An external bypass capacitor is recommended. The
VCC
total supply current is shared between this pin and pin 8 (through the
inductor).
2
GND
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
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.
3
GND
Same as pin 2.
4
4
RF IN
RF input pin. This pin is NOT internally DC-blocked. A DC-blocking
Bias
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.
RF IN
5
GND
Same as pin 2.
6
GND
Same as pin 2.
7
GND
Same as pin 2.
8
RF OUT RF output and bias pin. Biasing is accomplished with an external choke
inductor to VCC that provides high impedance at the operating fre-
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
RF OUT
100 nF 22 pF
1
2
RF IN
3
22 pF
4
VCC = 5V
100 nH
8
22 pF
7
6
5
RF OUT
Rev C5 010717
4-77
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