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SST12LF02 Datasheet PDF


SST12LF02 - Microchip

Part Number SST12LF02
Description High-Efficiency FEM
Manufacturers Microchip 
Logo Microchip Logo 
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SST12LF02 datasheet
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SST12LF02 pdf, equivalent, schematic
2.4 GHz WLAN High-Gain, High-Efficiency FEM
SST12LF02
Product Description
Data Sheet
SST12LF02 is a 2.4 GHz Front-end Module (FEM) designed in compliance with IEEE 802.11b/g/n
applications. It combines a high-performance Power Amplifier (PA) and a switch. There are three com-
ponents to the FEM: the Receiver (RX) chain, the Transmitter (TX) chain, and the Bluetooth® (BT)
chain.
The TX chain includes a high-efficiency PA based on the InGaP/GaAs HBT technology. This chain typ-
ically provides 29 dB gain with 27% power-added efficiency (PAE) @ POUT = 21 dBm for 802.11g and
26% PAE @ POUT = 21 dBm for 802.11b
The TX chain has excellent linearity, typically ~3% added EVM at 18 dBm output power which is essen-
tial for 54 Mbps 802.11g operation while meeting 802.11g spectrum mask at 21dBm. The SST12LF02
transmitter will also provide up to 17 dBm for 11n, MCS7-HT40 modulation and up to 16 dBm for 256 QAM,
MCS9-HT40 modulation.
SST12LF02 also features easy board-level usage along with high-speed power-up/down controls.
Ultra-low reference current (total IREF ~2 mA) makes SST12LF02 controllable by an on/off switching
signal directly from the baseband chip. These features, coupled with low operating current, make the
SST12LF02 ideal for the final stage power amplification in battery-powered 802.11b/g/n WLAN trans-
mitter applications.
SST12LF02 has an excellent on-chip, single-ended power detector, which features wide-range (>15
dB) with dB-wise linearization. The excellent on-chip power detector provides a reliable solution to
board-level power control.
The input/output RF ports are single-ended and fully matched to 50 internally. These RF ports are
DC decoupled, and require no DC-blocking capacitors or matching components. This helps reduce the
system board Bill of Materials (BOM) cost.
The SST12LF02 is offered in a16-contact XQFN package. See Figure 2 for pin assignments and Table
1 for pin descriptions.
© 2015
DS-70005001D
01/15
2
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SST12LF02 transistor, diode fet, igbt, scr
2.4 GHz WLAN High-Gain, High-Efficiency FEM
SST12LF02
Typical Performance Characteristics
Test Conditions: VCC = 3.3V, TA = 25°C, unless otherwise specified
Data Sheet
S11 versus Frequency
0
-5
-10
-15
-20
-25
-30
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Frequency (GHz)
S12 versus Frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Frequency (GHz)
S21 versus Frequency
40
30
20
10
0
-10
-20
-30
-40
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Frequency (GHz)
Figure 3: S-Parameters for TX Chain
S22 versus Frequency
0
-5
-10
-15
-20
-25
-30
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Frequency (GHz)
1418 S-Parms.1.1
© 2015
DS-70005001D
01/15
9





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