An LDO-based supply referencing 10b 32MS/s pipelined ADC

Author

Chang-Kyo Lee ; Ji-Wook Kwon ; Sang-Hyun Cho ; Seung-Tak Ryu

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

fYear

2011

fDate

24-25 Aug. 2011

Firstpage

1

Lastpage

2

Abstract

A reference driver-free pipelined ADC with a low drop-out (LDO) regulator for power supply is proposed for SoC applications. An LDO-based regulated voltage provides not only power supply for digital and analog circuits but also works as a reference voltage for the ADC. Conventional residue function from a 2.5b/stage design can use its max input as much as 93% of the internal supply voltage. A prototype 10-bit 32MS/s ADC has been designed for a 0.18μm CMOS technology. Under a regulated 1.5V internal supply from an external 1.8V, the design shows 65.1dB SFDR with 7.06mA (including LDO) current consumption.

Keywords

CMOS digital integrated circuits; analogue-digital conversion; power supplies to apparatus; system-on-chip; voltage regulators; CMOS technology; LDO-based supply referencing; SoC applications; current 7.06 mA; low drop-out regulator; power supply; reference driver-free pipelined ADC; reference voltage; size 0.18 mum; voltage 1.5 V; voltage 1.8 V; word length 10 bit; Capacitance measurement; Capacitors; Dynamic range; Noise; Prototypes; Simulation; System-on-a-chip;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Radio for Future Personal Terminals (IMWS-IRFPT), 2011 IEEE MTT-S International Microwave Workshop Series on

Conference_Location

Daejeon

Print_ISBN

978-1-4577-0961-6

Electronic_ISBN

978-1-4577-0963-0

Type

conf

DOI

10.1109/IMWS2.2011.6027169

Filename

6027169