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SE2425U Datasheet, PDF (1/10 Pages) SiGe Semiconductor, Inc. – RangeChargerTM 2.4 GHz Bluetooth Power Amplifier IC Preliminary Information | |||
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SE2425U
RangeChargerTM 2.4 GHz Bluetooth Power Amplifier IC
Preliminary Information
Applications
 Bluetoothtm wireless technology (Class 1)
 USB dongles, PCMCIA, flash cards, Access Points
 Enhanced data rate
Features
 Integrated input and inter-stage match
 +25 dBm GFSK Output Power
 +19.5 dBm 8DPSK Output Power
 Low current: 110 mA typical @ POUT = +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
Product Description
A monolithic, high-efficiency, silicon-germanium power
amplifier IC, the SE2425U is designed for 2.4 GHz
wireless applications, including BluetoothTM 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.
Functional Block Diagram
EN MODE VCC0 VCC1 VCC2 VCC3
( 4 ) ( 5 ) ( 2 ) ( 16 ) ( 15 ) ( 14 )
RF IN
(1)
Input
Match
Digital Bias & Enable Logic
Inter-
Stage
Match
Inter-
Stage
Match
RF OUT
(7)
SiGe SE2425U
GND
( Paddle )
Figure 1: SE2425U Block Diagram
165-DST-01 Â Rev 1.3 Â Apr-05-2006
Confidential
QA040506
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