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2.4 GHz High-Gain, High-Efficiency Front-end Module
A Microchip Technology Company
SST12LF03
Product Brief
SST12LF03 is a fully integrated Front-End Module (FEM) for WLAN 802.11b/g/n and Blue-
tooth? systems. SST12LF03 RF module includes a PA, a LNA, and an antenna switch,
making it ideal for WLAN/BT embedded applications where small size and high perfor-
mance are required. Based on GaAs PHEMT/HBT technology, SST12LF03 operates
within the frequency range of 2.4- 2.5 GHz with a very low DC-current consumption. The
Transmitter chain has excellent linearity, typically 3% added EVM up to 19 dBm output
power for 54 Mbps 802.11g operation, while meeting 802.11b spectrum mask at 22 dBm.
The receiver chain provides a low noise amplifier and has options for simultaneous WLAN
and Bluetooth operation.The SST12LF03 is offered in a 20-contact UQFN package.
Features
? Input/output ports are matched to 50 ? internally
and DC decoupled.
? Packages available
– 20-contact UQFN – 3mm x 3mm x 0.55mm
? All non-Pb (lead-free) devices are RoHS compliant
Transmitter Chain:
? High gain:
– Typically 28 dB gain across 2.4–2.5 GHz over tempera-
ture -20°C to +85°C for Transmitter.
? High linear output power (at 3.3V):
– Meets 802.11g OFDM ACPR requirement up to 21 dBm
– 3% added EVM up to 19 dBm for 54 Mbps 802.11g signal
– Meets 802.11b ACPR requirement up to 22 dBm
? High power-added efficiency/Low operating cur-
rent for 802.11b/g/n applications
– ~25% @ P OUT = 22 dBm for 802.11b/g
? Low shut-down current (~2 μA)
? Limited variation over temperature
– ~1 dB power variation between -20°C to +85°C
– ~2 dB gain variation between -20°C to +85°C
Bluetooth Path:
? Typically 2.5 dB loss
? Simultaneous BT/WLAN Rx mode:
– 8 dB gain
– 3.1 dB noise figure
Applications
? WLAN (IEEE 802.11b/g/n)
? Home RF
? Cordless phones
? 2.4 GHz ISM wireless equipment
? Zigbee?
? Bluetooth?
Block Diagram
V DET PA EN V CC
? Temperature and load insensitive on-chip power
CRX
TX IN
detector
– >20 dB dynamic range, temperature-stable, on-chip
power detection
CTX
Receiver Chain:
? LNA ON:
– Typically 12 dB gain
– 3.1 dB noise figure
– >5dB P1dB
Antenna
WLAN RX OUT
BT
CBT
CBTR V DD
12LF03-BlockDiagram
?2012 Silicon Storage Technology, Inc.
www.microchip.com
DS75028A
01/12
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