Preliminary
PBL 403 09
August 2000
PBL 403 09
3.6 V Differential Power Amplifier
for DECT Telecommunications system
Description.
The PBL 403 09 is a differential two stage silicon MMIC power amplifier intended for
use in handheld cordless terminals in the 1900 MHz band. It can deliver more than 27
dBm at 1900 MHz into a balanced 50
Ω
load using a single 3.6 V supply. The circuit has
a logic input to control transmit on/off and can be operated up to 100 % duty cycle with
minimum performance degradation. The circuit is housed in a specially designed
QSOP16 (150 mil body ) package and the implementation requires only few external
components.
25 GHz f
t
state-of-the-art deep trench isolated double-poly silicon bipolar process
with additional features for improved wireless performance has been used. On-chip
capacitors and inductors are used for the integrated internal matching network. Special
front-side metallized substrate contacts provide excellent ground paths from active
devices to the highly doped semiconductor substrate and package ground.
Key features.
•
•
•
•
•
•
•
•
27 dBm output power
25 dB small signal gain
50 % Power Added Efficiency
Simple logic on/off power control
Battery charging conditions to 5.0 V
ESD protected
Excellent ruggedness
On-chip input and interstage
matching
Differential input matched to 50
Ω
Easy implementation with a simple
output matching network
Proven RF Silicon Technology
Reliability
Low overall solution cost
•
V
CC
•
•
RF In A
RF Out A & V
CC
•
Applications.
RF In B
RF Out B & V
CC
•
DECT
Figure 1. Block diagram.
Figure 2. Package outlook.
1
P
B
L
4
0
Power Control
PA-ON
3
0
9
ERICSSON [ ERICSSON ]
