RF2311PCBA View Datasheet(PDF) - RF Micro Devices
Part Name
Description
MFG CO.
'RF2311PCBA' PDF : 6 Pages View PDF
RF2311
Pin Function Description
Interface Schematic
1
VCC
Power supply pin. An external bypass capacitor is recommended. The See pin 8.
total supply current is shared between this pin and pin 8 (through the
inductor).
2
GND
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
3
GND
Same as pin 2.
4
RF IN
RF input pin. This pin is NOT internally DC blocked. A DC blocking
See pin 8.
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.
5
GND
Same as pin 2.
6
GND
Same as pin 2.
4
7
GND
Same as pin 2.
8
RF OUT RF output pin. Because DC is present on this pin, a DC blocking capac-
VCC
itor, suitable for the frequency of operation, should be used in most
applications. The DC voltage on this pin is typically 2.4V. Alternatively,
power supply may be connected to this pin. A series resistor and induc-
tor should be used, in which case the L should be large enough to
present a high impedance at the lowest operating frequency, and the R
RF IN
should be (VCC - 2.4) / I, where I is the desired device current (between
RF OUT
8mA and 20mA).
Rev C3 010228
4-83
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