RF5198
Pin
1
2
3
4
5
Function
RF IN
GND
VMODE
VREG
VDET
Description
RF input internally matched to 50Ω. This input is internally AC-coupled.
Ground connection.
For nominal operation (High Power mode), V
MODE
is set LOW. When set
HIGH, devices are biased lower to improve efficiency at lower output levels.
Regulated voltage supply for amplifier bias circuit. In power down mode,
both V
REG
and V
MODE
need to be LOW (<0.5V).
An external load resistor (RDET) is required on this pin. A lowpass filter or
averaging functionality is also required to reduce voltage ripple (due to
modulation) to an acceptable amount. An isolator is required on the PA RF
output for proper operation of PDET when the PA operates into a non-50Ω
load impedance.
No connection. Do not connect this pin to any external circuit.
No connection. Do not connect this pin to any external circuit.
No connection. Do not connect this pin to any external circuit.
RF output. Internally AC-coupled.
Output stage collector supply. Please see the schematic for required exter-
nal components.
Same as pin 10.
Same as pin 10.
No connection. Do not connect this pin to any external circuit.
Interstage matching. Connect to pin 15.
First stage collector supply and interstage matching.
Power supply input for the DC bias circuitry.
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.
Interface Schematic
6
7
8
9
10
11
12
13
14
15
16
Pkg
Base
NC
NC
NC
RF OUT
VCC2
VCC2
VCC2
NC
IM
VCC1/IM
VCCBIAS
GND
Package Drawing
3.00
Pin 1 ID
A
1.45
Pin 1 ID
3.00
1.45
0.28
TYP
0.18
0.05
0.15 C
2 PLCS
B
0.15 C
2 PLCS
0.40
TYP
0.20
0.10 M C A B
0.50 TYP
0.203 REF
0.08 C
0.08 C
0.925
0.775
Shaded areas represent pin 1.
0.102 REF
Dimensions in mm.
C
4 of 8
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 A5 DS060310
RFMD [ RF MICRO DEVICES ]
