©2006 SST Communications Corp.

S71278-01-000

1/06

1

The SST logo and SuperFlash are registered Trademarks of Silicon Storage Technology, Inc.

These specifications are subject to change without notice.

Preliminary Specifications

FEATURES:

•

High Gain:

– Typically 35 dB gain across 4.9-5.8 GHz over

temperature 0°C to +85°C

•

High linear output power:

– ~28 dBm P1dB (Pulsed single-tone signal)

– Meet 802.11a OFDM ACPR requirement up to

23+ dBm over ~ entire band

– Added EVM~4% up to 21 dBm for

54 Mbps 802.11a signal

•

High power-added efficiency/Low operating

current for 54 Mbps 802.11a applications

•

•

Low idle current

•

High speed power up/down

– Turn on/off time (10%~90%) <100 ns

– Typical power-up/down delay with driver delay

included <200 ns

•

High temperature stability

– ~1.5/1.0 dB gain/power variation between

0°C to +85°C

– ~1 dB detector variation over 0°C to +85°C

•

Low shut-down current (< 0.1 µA)

•

On-chip power detection

•

20 dB dynamic range on-chip power detection

•

Simple input/output matching

•

Packages available

– 16-contact WQFN (3mm x 3mm)

– Non-Pb (lead-free) packages available

APPLICATIONS:

•

WLAN (IEEE 802.11a)

•Japan WLAN

•

HyperLAN2

•

Multimedia

PRODUCT DESCRIPTION

The SST11LP12 is a high-power, high-gain power amplifier

based on the highly-reliable InGaP/GaAs HBT technology.

The SST11LP12 can be easily configured for high-power,

high-efficiency applications with superb power-added effi-

ciency while operating over the entire 802.11a frequency

band for U.S., European, and Japanese markets (4.9-5.8

GHz). It typically provides 35 dB gain with 16% power-

The SST11LP12 has excellent linearity, typically ~4%

added EVM at 21 dBm output power which is essential for

54 Mbps 802.11a operation while meeting 802.11a spec-

trum mask at 23+ dBm. SST11LP12 also has wide-range

(>20 dB), temperature-stable (~1 dB over 85°C), single-

ended/differential power detectors which lower users’ cost

on power control.

The power amplifier IC also features easy board-level

usage along with high-speed power-up/down control. Ultra-

SST11LP12 controllable by an on/off switching signal

directly from the baseband chip. These features coupled

with low operating current make the SST11LP12 ideal for

the final stage power amplification in battery-powered

802.11a WLAN transmitter and access point applications.

The SST11LP12 is offered in 16-contact WQFN package.

See Figure 1 for pin assignments and Table 1 for pin

descriptions.

4.9-5.8 GHz High-Linearity Power Amplifier

SST11LP12

SST1LP124.9-5.8 GHz High-Linearity Power Amplifier