RF2119 RF Micro Devices, RF2119 Datasheet - Page 4

• Manufacturer Part Number: RF2119
• Description: HIGH EFFICIENCY 2V POWER AMPLIFIER
• Manufacturer: RF Micro Devices

2
2-58
Base
Pkg
Pin
10
11
12
13
14
15
16
RF2119
1
2
3
4
5
6
7
8
9
Function
LMATCH
RF OUT
RF OUT
RF OUT
BIAS1
BIAS2
GND1
VCC1
RF IN
GND
GND
GND
GND
VPC
NC
NC
NC
Description
Ground externally.
Interstage tuning. This pin is internally DC blocked and will connect to a
shunt inductor or microstrip line used for interstage tuning. Length from
pin to via should be approximately 60mils for 915MHz and 75mils for
902MHz and 120mils for 836MHz. The lumped element equivalent is
1.2nH to 2.0nH to ground, depending on frequency band of interest.
Ground externally.
Power supply for stage 1. V
with a decoupling capacitor on the V
Ground for stage 1. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
RF input. An external DC blocking capacitor is required if this port is
connected to a DC path to ground or a DC voltage.
Ground externally.
Ground return for the first stage bias. This pin should be connected to a
33nH inductor to ground.
Power control voltage. For maximum power, this voltage should be at
least 2.2V. To turn off, this voltage should be less than 0.6V. This pin
should be bypassed as close to the pin as practical.
No connection.
No connection.
RF output and power supply for the output stage. The bias for the out-
put stage is provided through this pin and pin 13. An external matching
network is required to provide the optimum load impedance; see the
application schematics for details.
Same as pin 12.
Same as pin 12.
No connection.
Ground return for the second stage bias. This pin should be connected
to a 33nH inductor to ground.
Ground connection. The backside of the package should be soldered to
a top side ground pad which is connected to the ground plane with mul-
tiple vias. The pad should have a short thermal path to the ground
plane.
CC
should be fed through a 3.9nH inductor
CC
side.
Interface Schematic
Preliminary
Rev A8 010720