DESCRIPTION
The SA3601 is an integrated dual-band RF front-end that operates at both cellular (AMPS and TDMA) and PCS (TDMA) frequencies, and is designed in a 20 GHz fT BiCMOS process—QUBiC2. The low-band (LB) receiver is a combined low-noise amplifier (LNA) and mixer. The LNA has a 1.7 dB noise figure (NF) at 881 MHz with 17 dB of gain and an IIP3 of –7 dBm. The wide-dynamic range mixer has a 9.5 dB NF at 881 MHz with 9.5 dB of gain and an IIP3 of +6 dBm.

FEATURES
• Low current consumption: LB ICC = 14 mA; HB ICC = 15.5 mA
• Outstanding low- and high-band noise figure
• LNAs with gain control (30 dB gain step)
• LO input and output buffers
• Frequency doubler
• On chip logic for network selection and power down
• Very small outline package

APPLICATIONS
• 800 to 1000 MHz analog and digital receivers
• 1800 to 2000 MHz digital receivers
• Portable radios
• Mobile communications equipment