The SST12LP14A is a versatile power amplifier based on the highly-reliable InGaP/GaAs HBT technology.

The SST12LP14A can be easily configured for high-power applications with good power-added efficiency while operating over the 2.4~2.5 GHz frequency band. It typically provides 29 dB gain with 23% power-added efficiency @ POUT= 22 dBm for 802.11g and 25% power-added efficiency @ POUT = 23 dBm for 802.11b.

The SST12LP14A has excellent linearity, typically ~4% added EVM at 21.5 dBm output power which is essential for 54 Mbps 802.11g operation while meeting 802.11g spectrum mask at 23 dBm. The SST12LP14A can also be configured for high-efficiency operation (typically 17 dBm linear 54 Mbps 802.11g output power at 85 mA total power consumption) which is desirable in embedded applications such as in hand-held units.

The SST12LP14A 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 SST12LP14A controllable by an on/off switching signal directly from the baseband chip. These features coupled with low operating current make the SST12LP14A ideal for the final stage power amplification in battery-powered 802.11g/b WLAN transmitter applications.

The SST12LP14A has an excellent on-chip, single-ended power detector, which features wide-range (>15 dB) with dB-wise linearization and high stability over temperature (<+/-0.3 dB 0°C to +85°C), frequency (<+/-0.3 dB across Channels 1 through 14), and output load (<+/-0.4 dB with 2:1 output VSWR all phases). The excellent onchip power detector provides a reliable solution to board-level power control.

The SST12LP14A is offered in 16-contact VQFN package. See Figure 1 for pin assignments and Table 1 for pin descriptions.

SST12LP14A Features:

• Medium Gain
• High Linear Output Power
• High-Speed Power-Up/Power-Down
• Low Idle Current