A fast response, programmable PA regulator subsystem for dual mode CDMA/AMPS handsets

Author

Ali, I. ; Griffith, R.

Author_Institution

Design & Platform Oper., Motorola Inc., Tempe, AZ, USA

fYear

2000

fDate

10-13 June 2000

Firstpage

231

Lastpage

234

Abstract

A low drop-out linear regulator, designed specifically for RF Power Amplifier (PA) applications, has been integrated as part of a multi-function power management integrated circuit for CDMA cellular handsets. The regulator, which utilizes an external PMOS pass transistor, is programmable from either an internal 4 bit DAC or an external reference voltage and is stable with an output filter capacitance as low as 1 /spl mu/F.

Keywords

UHF integrated circuits; UHF power amplifiers; cellular radio; circuit feedback; code division multiple access; power control; power integrated circuits; programmable circuits; telephone sets; CDMA cellular handsets; RF power amplifier applications; dual mode CDMA/AMPS handsets; external PMOS pass transistor; external reference voltage; fast response regulator subsystem; internal DAC; low drop-out linear regulator; multi-function power management IC; programmable power amplifier regulator subsystem; Application specific integrated circuits; Energy management; Filters; Multiaccess communication; Radio frequency; Radiofrequency amplifiers; Radiofrequency integrated circuits; Regulators; Telephone sets; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2000. Digest of Papers. 2000 IEEE

Conference_Location

Boston, MA, USA

ISSN

1529-2517

Print_ISBN

0-7803-6280-2

Type

conf

DOI

10.1109/RFIC.2000.854455

Filename

854455