RF5198 Datasheet, PDF (4/8 Pages) RF Micro Devices – 3V 1950MHZ W-CDMA LINEAR POWER AMPLIFIER MODULE

RF5198
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pkg
Base
Function
RF IN
GND
VMODE
VREG
VDET
NC
NC
NC
RF OUT
VCC2
VCC2
VCC2
NC
IM
VCC1/IM
VCCBIAS
GND
Description
Interface Schematic
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 out-
put 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
external 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 mul-
tiple vias. The pad should have a short thermal path to the ground
plane.
2-4
Rev A5 060310