SA8016 Datasheet | Philips Semiconductors

INTEGRATED CIRCUITS SA8016 2.5GHz low voltage fractional-N synthesizer Product specification Supersedes data of 1999 Apr 16 1999 Nov 04 Philips Semiconductors Philips Semiconductors Product specification 2.5GHz low voltage fractional-N synthesizer GENERAL DESCRIPTION The SA8016 BICMOS device integrates programmable dividers, charge pumps and a phase parator to implement a phase-locked loop. The device is designed to operate from 3 Ni Cd cells, in pocket phones, with low current and nominal 3 V supplies. The synthesizer operates at VCO input frequencies up to 2.5 GHz. The synthesizer has fully programmable main and reference dividers. All divider ratios are supplied via a 3-wire serial programming bus. Separate power and ground pins are provided to the analog and digital circuits. The ground leads should be externally short-circuited to prevent large currents flowing across the die and thus causing damage. VDDCP must be greater than or equal to VDD. The charge pump current (gain) is set by an external resistance at the RSET pin. Only passive loop filters could be used; the charge pump operates within a wide voltage pliance range to provide a wider tuning range. 1 2 3 4 5 6 7 N/C 8 GND CP 9 PHP 10 N/C 11 V DDCP 12 RSET TOP VIEW LOCK TEST VDD GND RFin+ RFin- GNDCP PHP 1 2 3 4 5 6 7 8 16 PON 15 STROBE 14 DATA 13 CLOCK 12 REFin+ 11 REFin- 10 RSET 9 VDDCP SR01505 Figure 1. TSSOP16 Pin Configuration V DD STROBE 20 LOCK TEST Features VDDPre GND GNDPre RFin+ RFin- N/C 19 18 17 16 15 14 13 DATA CLOCK REFin+ REFin- N/C N/C - Low phase noise - Low power - Fully programmable main divider - Internal fractional spurious pensation - Hardware and software power down - Split supply for VDD and VDDCP APPLICATIONS N/C - 350- 2500 MHz wireless equipment - Cellular phones (all standards) -...