RF2192
Pin
1
Function
GND
Description
Ground connection.
Interface Schematic
Ground connection.
Ground connection.
2
3
GND
GND
RF input. An external 100pF series capacitor is required as a DC block. In
addition, shunt inductor and series capacitor are required to provide
2:1VSWR.
4
RF IN
VCC1
GND1
100 pF
RF IN
From
Bias
Stages
Power Down control for first stage. Regulated voltage supply for amplifier
5
6
VREG1
VMODE
bias. In Power Down mode, both V
and V
need to be LOW (<0.5V).
REG
MODE
For nominal operation (High Power Mode), V
is set LOW. When set
MODE
HIGH, the driver and final stage are dynamically scaled to reduce the
device size and as a result to reduce the idle current.
Power Down control for the second stage. Regulated voltage supply for
7
VREG2
amplifier bias. In Power Down mode, both V
and V
need to be LOW
REG
MODE
(<0.5V).
Bias circuitry ground. See application schematic.
Ground connection.
8
9
BIAS GND
GND
RF output and power supply for final stage. This is the unmatched collector
output of the second stage. A DC block is required following the matching
components. The biasing may be provided via a parallel L-C set for reso-
nance at the operating frequency of 824MHz to 849MHz. It is important to
select an inductor with very low DC resistance with a 1A current rating.
Alternatively, shunt microstrip techniques are also applicable and provide
very low DC resistance. Low frequency bypassing is required for stability.
10
RF OUT
RF OU T
From Bias
Stages
Same as pin 10.
Same as pin 10.
See pin 10.
11
12
13
RF OUT
RF OUT
2FO
Harmonic trap. This pin connects to the RF output but is used for providing
a low impedance to the second harmonic of the operating frequency. An
inductor or transmission line resonating with an on chip capacitor at 2fo is
required at this pin.
Power supply for bias circuitry. A 100pF high frequency bypass capacitor is
recommended.
14
VCC BIAS
Power supply for first stage.
Same as Pin 15.
15
16
Pkg
Base
VCC1
VCC1
GND
Ground connection. The backside of the package should be soldered to a
top side ground pad which is connected to the ground plane with multiple
vias. The pad should have a short thermal path to the ground plane.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A8 DS060918
5 of 12
RFMD [ RF MICRO DEVICES ]
