Title :
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
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;
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
DOI :
10.1109/ICSICT.2014.7021474
