2.4 GHz High Efficiency Wireless LAN Front End

Please note: this product is being discontinued and is not recommended for new designs.

The SE2621L is a complete 802.11b/g/n WLAN RF front-end module providing all the functionality of the power amplifier, power detector, diversity switch and 50 Ω matching on all RF ports. The SE2621L provides a complete 2.4 GHz WLAN RF solution from the output of the transceiver to the antennas in an ultra-compact form factor.

The SE2621L is designed for ease of use, with all the critical matching and harmonic filtering and integrated transmit/receive DPDT switch providing a 50 Ω interface to the antenna.

The SE2621L also includes a transmitter power detector with 20 dB of dynamic range and a digital enable control for transmitter power ramp on/off control. The power ramp rise/fall time is 0.5 μs typical.


Frequency (GHz) Min.2.4
Frequency (GHz) Max.2.5
RF Frequency (MHz)
Typ. POUT @ 2.5% EVM (dBm)
802.11 WLAN Standardb/g/n
Antenna Ports2
Architecture802.11 b/g/n WLAN FEM with Diversity
Typ. Current @ VDD = 3.3 V 17.5dBm (mA)
Typ. POUT @ 3.0% EVM (dBm)19
Typ. Current @ VCC = 5 V (mA)
Typ. Tx Gain (dB)27
PackageQFN, 24-pin
Package (mm)3 x 4 x 0.9


  • Dual mode IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
  • Integrated PA, TX filter, diversity switch
  • Integrated positive slope power detector
  • +19 dBm output power, 802.11b, 11 Mbits
  • +17 dBm @ 3.0 % EVM, 802.11g, 3.3 V
  • Lead free, halogen free and RoHS compliant
  • Small QFN (24-pin, 3.0 x 4.0 x 0.9 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Product Documents