Description
The STLC4420A is a single chip dual band WLAN solution for embedded, low-power, high performance and very small form factor mobile applications. The product conforms to the IEEE 802.11b, 802.11g and 802.11a protocols operating in the 2.4 GHz and 5 GHz frequency band, supporting OFDM data rates of 54, 48, 36, 24, 18, 12, 9, and 6Mbps in the both bands and CCK data rates of 11 and 5.5Mbps and legacy data rates of 2 and 1Mbps at 2.4 GHz.

Feature summary
■ Extremely small footprint
■ Low power consumption
■ High performance dual band solution,operating at 2.4 GHz and at 5 GHz
■ Fully compliant with the IEEE 802.11b ,802.11g and 802.11a WLAN standards
■ Support for 54, 48, 36, 24, 18, 12, 9, and 6Mbps OFDM, 11 and 5.5Mbps CCK and legacy 2 and 1Mbps data rates at 2.4 GHz
■ Support for 54, 48, 36, 24, 18, 12, 9, and 6Mbps OFDM at 5 GHz
■ Single chip 802.11b/g/a WLAN solution with fully integrated:
   – Zero IF (ZIF) transceiver,
   – Voltage controlled oscillator (VCO),
   – High-speed A/ D and D/A converters,
   – Radio power management unit (PMU),
   – OFDM and CCK baseband processor,
   – ARM9 media access controller (MAC),
   – SPI serial host interface (up to 48Mbps)
   – PA bias control
   – Flexible integrated power management unit
   – Glueless FEM interface
■ Intelligent power control, including 802.11 power save mode
■ Fully integrated Bluetooth coexistence
■ Mode selectable SPI or SDIO host interface (up to 48Mbps)