SKY65043

• Wide voltage range for both digital and analog supply voltages, 2.7 V to 3.3 V
• Four-step gain control for cellular CDMA and PCS bands
• Three-wire serial bus for device programming
• LGA (16-pin, 3 x 3 x 1 mm) Pb-free (MSL3, 260 °C per JEDEC J-STD-020) package

Dual-Band CDMA2000 LNA for Cellular CDMA and PCS Femtocell Applications

The SKY65043 is a dual-band Low Noise Amplifier (LNA) for CodeDivision Multiple Access (CDMA) femtocell base stationapplications. The SKY65043 supports femtocells in the cellularCDMA and Personal Communications Service (PCS) bands. Thedevice provides low noise amplification with high linearity toachieve high dynamic range.

Together with Skyworks SKY74711 direct conversion receiver, theSKY65043 offers a cost effective, high performance RF-tobasebandradio solution. By cascading the SKY65043 with theSKY74711 DCR?, Printed Circuit Board (PCB) layout can easilybe optimized for small areas and easy routing.

Different modes, currents, and gain steps of low noiseamplification are controlled by a serial three-wire bus interface.The SKY65043 requires external supply filtering capacitors, one biasresistor, and various external components to match input andoutput impedance to 50 .

The 16-pin Land Grid Array (LGA) device package and pinout areshown in Figure 1 and a block diagram of the SKY65043 is shownin Figure 2.