Title :
Quick-start CMOS voltage reference for positive LDOs
Author :
Stanescu, Cornel ; Caracas, Cristi ; Aungurencei, Gabriel ; Russell, Anthony
Author_Institution :
Catalyst Semicond. Romania S.R.L.,, Bucharest
Abstract :
The paper presents a quick-start CMOS voltage reference built within a positive LDO processed in a double-metal 0.5 mum CMOS technology. The reference consumes 10 muA, while delivering a stable output voltage of +1.25 V. The quick-start feature allows the active charging of an external 10 nF bypass capacitor within 200 mus. Power supply rejection ratio is 100 dB at low frequencies, while typical TC is 20 ppm/degC, and untrimmed VREF spread 25 mV (plusmn3sigma)
Keywords :
CMOS integrated circuits; capacitors; integrated circuit design; power supply circuits; reference circuits; 1.25 V; 10 nF; 100 dB; 200 mus; bypass capacitor; double-metal CMOS technology; positive LDO; power supply rejection ratio; quick-start CMOS voltage reference; CMOS process; CMOS technology; Capacitors; Circuits; Frequency; MOSFETs; Mirrors; Resistors; SPICE; Voltage;
Conference_Titel :
Semiconductor Conference, 2005. CAS 2005 Proceedings. 2005 International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-9214-0
DOI :
10.1109/SMICND.2005.1558805
