RF5117 Datasheet, PDF (3/10 Pages) RF Micro Devices – 3V, 1.8GHz TO 2.8GHz LINEAR POWER AMPLIFIER

RF5117
Pin
1
2
3
Function
RF IN
Description
RF input. Matching network with DC block required, see evaluation
board schematic for details.
Interface Schematic
VCC
Bond Wire
Inductance
RF IN
BIAS
BIAS GND1
PWR SEN
Ground for first stage bias circuit. Not connected.
The PWR SEN and PWR REF pins can be used in conjunction with an
external 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.
See pin 5.
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
BIAS
VREG2
6
7
8
9
10
11
12
13
14
15
16
Pkg
Base
BIAS BIAS
GND1 GND2
VREG2
BIAS GND2
NC
NC
RF OUT
RF OUT
RF OUT
VCC
VCC
NC
NC
GND
Same as pin 5.
See pin 5.
Ground for second stage bias circuit. For best performance connect to See pin 5.
ground with a 10nH inductor.
Not connected.
Not connected.
RF output and bias for the output stage. The power supply for the out-
put 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 cur-
BIAS
rents.
Same as pin 10.
See pin 10.
Same as pin 10.
See pin 10.
Interstage match and bias for first stage output. Connect interstage
matching capacitor to this pad with a short trace. Connect low-fre-
quency bypass capacitors to this pin with a long trace. See evaluation
board layout for details.
Same as pin 13.
See pin 1.
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.
RF OUT
Rev A7 041007
2-575