2.4 GHz Bluetooth Power Amplifier IC

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.

Please note: SE2425U-R is being discontinued and is not recommended for new design. The suggested replacement is SE2433T-R


  • 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
  • Lead Free and RoHS Compliant
  • Ultra thin package: 0.5 mm
  • 3.3 V single supply operation
Data Sheets SE2425U: 2.4 GHz Bluetooth Power Amplifier IC 202409A.pdf (230 KB)
ProductName : SE2425U
Frequency Range (GHz) : 2.4-2.5
Test Frequency (GHz) : 2.45
Gain Typ. (dB) : 28.2
OIP3 (dBm) :
P1 dB (dBm) :
Power Added Efficiency (%) :
VCC (V) : 3.3
Quiescent Current Typ. (mA) :
Noise Figure Typ. (dB) :
Package : QFN, 16-pin
Package (mm) : 3 x 3 x 0.5
Product Information:
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