RF5117_11 Datasheet, PDF (3/13 Pages) RF Micro Devices – LINEAR POWER AMPLIFIER

RF5117
Pin Function Description
Interface Schematic
1
RF IN
RF input. Matching network with DC block required, see evaluation board
VCC
schematic for details.
Bond Wire
Inductance
RF IN
BIAS
2
BIAS GND1 ^{Ground for first stage bias circuit. Not connected.}
See pin 5.
3
PWR SEN ^{The PWR SEN and PWR REF pins can be used in conjunction with an exter-}
nal feedback path to provide an RF power control function for the RF5117.
The power control function is based on sampling the RF drive to the final
stage of the RF5117.
RF OUT
PWR SEN
BIAS
PWR REF
4
PWR REF ^{Same as pin 3.}
See pin 3.
5
VREG1
This pin requires a regulated supply to maintain nominal bias current.
VREG1
VREG2
BIAS
6
7
8
9
10
11
12
13
14
15
16
Pkg
Base
VREG2
BIAS GND2
NC
NC
RF OUT
RF OUT
RF OUT
VCC
VCC
NC
NC
GND
BIAS
GND1
Same as pin 5.
See pin 5.
Ground for second stage bias circuit. For best performance connect to
ground with a 10nH inductor.
Not connected.
See pin 5.
Not connected.
RF output and bias for the output stage. The power supply for the output
transistor needs to be supplied to this pin. This can be done through a
quarter-wave length microstrip line that is RF grounded at the other end, or
through an RF inductor that supports the required DC currents.
BIAS
Same as pin 10.
See pin 10.
Same as pin 10.
See pin 10.
Interstage match and bias for first stage output. Connect interstage match- See pin 1.
ing capacitor to this pad with a short trace. Connect low-frequency bypass
capacitors to this pin with a long trace. See evaluation board layout for
details.
Same as pin 13.
See pin 1.
Not connected.
Not connected.
Ground connection. The backside of the package should be connected to
the ground plane through a short path, i.e., vias under the device will be
required.
BIAS
GND2
RF OUT
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