GENERAL DESCRIPTION

The SA8028 BICMOS device integrates programmable dividers, charge pumps and phase comparators to implement phase–locked loops. The device is designed to operate from 3 NiCd cells, in pocket phones, with low current and nominal 3 V supplies.

FEATURES

• Extremely low phase noise: L(f) = –101 dBc/Hz at 5 kHz offset at 800 MHz

• Low power

• Programmable Normal & Integral charge pump outputs: Maximum output = 10.4 mA

• Digital fractional spurious compensation

• Hardware and software power-down

• IDDsleep < 0.1 µA (typ) at VDD = 3.0 V

• Seperate supply for VDD and VDDCP

• Programmable loop filter bandwidth

APPLICATIONS

• 500 to 2500 MHz wireless equipment

• Cellular phones, all standards including:

CDMA : IS95-B,C WCDMA

3G : WCDMA / UMTS

GSM : EDGE / GPRS

TDMA : IS136 and EDGE

GAIT : GSM and TDMA

• WLAN

• Wireless PDAs

• Satellite tuners and all other high frequency equipment

• Extreme fine frequency resolution applications