2.4 GHz High-Power, High-Gain Power Amplifier
SST12LP08
Preliminary Specification
FEATURES:
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High Gain:
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Low Shut-down Current (~2 µA)
High temperature stability
– ~1 dB gain/power variation between 0°C to +85°C
Excellent On-chip power detection
20 dB dynamic range on-chip power detection
Simple input/output matching
Packages available
– 12-contact XQFN – 2mm x 2mm
All non-Pb (lead-free) devices are RoHS compliant
– Typically 30 dB gain across 2.4~2.5 GHz over
temperature 0°C to +85°C
•
High linear output power:
– >28 dBm P1dB
- Please refer to “Absolute Maximum Stress
Ratings” on page 4
– Meets 802.11g OFDM ACPR requirement up to
23.5 dBm
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•
•
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– ~3% added EVM up to 20 dBm for
54 Mbps 802.11g signal
•
– Meets 802.11b ACPR requirement up to 23.5 dBm
•
High power-added efficiency/Low operating
current for both 802.11g/b applications
APPLICATIONS:
– ~34%/200 mA @ POUT = 23.5 dBm for 802.11b/g
Single-pin low IREF power-up/down control
– IREF <2 mA
Low idle current
– ~85 mA ICQ
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•
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WLAN (IEEE 802.11b/g)
Home RF
Cordless phones
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2.4 GHz ISM wireless equipment
High-speed power-up/down
– Turn on/off time (10%- 90%) <100 ns
– Typical power-up/down delay with driver delay
included <200 ns
PRODUCT DESCRIPTION
The SST12LP08 is a versatile power amplifier based on
the highly-reliable InGaP/GaAs HBT technology.
The SST12LP08 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 SST12LP08 can be easily configured for high-power
applications with good power-added efficiency while oper-
ating over the 2.4- 2.5 GHz frequency band. It typically pro-
vides 30 dB gain with 34% power-added efficiency (PAE)
@ POUT = 23.5 dBm for 802.11b/g.
The SST12LP08 is offered in 12-contact XQFN package.
See Figure 2 for pin assignments and Table 1 for pin
descriptions.
The SST12LP08 has excellent linearity, typically ~3%
added EVM at 20 dBm output power which is essential for
54 Mbps 802.11g operation while meeting 802.11g spec-
trum mask at 23.5 dBm.
The SST12LP08 also features easy board-level usage
along with high-speed power-up/down control through a
single combined reference voltage pin. Ultra-low reference
current (total IREF ~2 mA) makes the SST12LP08 controlla-
ble by an on/off switching signal directly from the baseband
chip. These features coupled with low operating current
make the SST12LP08 ideal for the final stage power ampli-
fication in battery-powered 802.11g/b WLAN transmitter
applications.
©2009 Silicon Storage Technology, Inc.
The SST logo and SuperFlash are registered Trademarks of Silicon Storage Technology, Inc.
These specifications are subject to change without notice.
S71399-01-000
1
05/09