A 124mW, 70dB-DR PGA for low power audio application

Author

Dailan ; Chen Cheng Ying ; Hu Xiao Yu ; Hei Yong

Author_Institution

Coll. of Inf. Eng., North China Univ. of Technol., Beijing, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

In this paper a Programmable Gain Amplifier (PGA) for low power audio application is presented, which comprises bandgap reference, low drop-out voltage regulator (LDO), Common-Mode voltage generator, resistor array and operational transconductance amplifier (OTA). The PGA is implemented in SMIC 0.13 μm 1P8M CMOS process. The measurement results show that in 1 V power supply, 2.1 KHz input frequency and 200 mVp-p output, the Dynamic Range (DR) is 70 dB, Total Harmonic Distortion (THD) is 63 dB, power consumption is 124 uW, meets the low power, high resolution audio application requirement.

Keywords

CMOS integrated circuits; audio-frequency amplifiers; harmonic distortion; low-power electronics; operational amplifiers; reference circuits; voltage regulators; DR PGA; LDO; OTA; SMIC 1P8M CMOS process; THD; bandgap reference; common-mode voltage generator; frequency 2.1 kHz; low drop-out voltage regulator; low power audio application; operational transconductance amplifier; power 124 mW; programmable gain amplifier; resistor array; size 0.13 mum; total harmonic distortion; voltage 1 V; Abstracts; CMOS integrated circuits; CMOS technology; Electronics packaging; Gain; Gain measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021474

Filename

7021474