SE2425U
RangeCharger
TM
2.4 GHz Bluetooth Power Amplifier IC
Preliminary Information
Applications
Bluetooth
tm
wireless technology (Class 1)
USB dongles, PCMCIA, flash cards, Access Points
Enhanced data rate
Product Description
A monolithic, high-efficiency, silicon-germanium power
amplifier IC, the SE2425U is designed for 2.4 GHz
wireless applications, including Bluetooth
TM
Class 1
basic rate and enhanced data rate applications. It
delivers +25 dBm output power in standard rate GFSK
mode and +19.5 dBm output power in enhanced rate
8DPSK.
The SE2425U provides a digital mode control input for
boosting the linear performance for enhanced data rate
applications.
The SE2425U operates at 3.3 V DC with a peak
efficiency of 43 % in basic rate and 21 % in enhanced
rate mode. The internal bias management allows the
part to only draw 28 mA in Class 2 output power levels.
Output match integrates the high Q inductors to reduce
component count and bill of materials. It uses two
external capacitors to allow for varying loads, such as
switches and filters, in different applications.
The silicon/silicon-germanium structure of the
SE2425U, and its exposed die-pad package, soldered
to the system PCB, provide high thermal conductivity
and a subsequently low junction temperature. This
device is capable of operating at a duty cycle of 100
percent.
Features
Integrated input and inter-stage match
+25 dBm GFSK Output Power
+19.5 dBm 8DPSK Output Power
Low current: 110 mA typical @ P
OUT
= +20 dBm
Ultra low quiescent current: 28 mA
Digital Enable for direct interface to standard
CMOS processors
Mode-control for easy switching between standard
and EDR modes
Gain: 29 dB
3.3 V single supply operation
Ordering Information
Type
SE2425U
SE2425U-R
SE2425U-EK1
Package
3 x 3 x 0.5 mm QFN
3 x 3 x 0.5 mm QFN
N/A
Remark
Sample
Tape & Reel
Evaluation Kit
Functional Block Diagram
EN
(4)
MODE
(5)
VCC0
(2)
VCC1
( 16 )
VCC2
( 15 )
VCC3
( 14 )
Digital Bias & Enable Logic
RF IN
(1)
Input
Match
Inter-
Stage
Match
Inter-
Stage
Match
RF OUT
(7)
SiGe SE2425U
GND
( Paddle )
Figure 1: SE2425U Block Diagram
165-DST-01
Rev 1.3
Apr-05-2006
Confidential
QA040506
1 of 10
SIGE [ SIGE SEMICONDUCTOR, INC. ]
