Title :
A low power wideband differential transimpedance amplifier for optical receivers in 0.18-μm CMOS
Author :
Chong Whye Seng ; Tan Yung Sern ; Yeo Kiat Seng
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
This paper presents a low power wideband differential TIA for optical receivers. The wideband operation is achieved by modifying a conventional regulated cascode input stage and combining it with a feedback amplifier in a 0.18μm CMOS process. The post-layout simulation results show that the proposed TIA has a bandwidth of 4.5 GHz, average input referred noise current spectral density of 13.7 pA/sqrtHz from DC to 7 GHz, and transimpedance gain of 64.8 dBO. The proposed TIA dissipates only 3.5 mW with a 1.8 V power supply. The core circuit occupies a chip area of 97 μm × 53 μm.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; feedback amplifiers; low-power electronics; operational amplifiers; optical receivers; power supply circuits; wideband amplifiers; CMOS process; average input referred noise current spectral density; bandwidth 4.5 GHz; core circuit; feedback amplifier; low power wideband differential TIA; low power wideband differential transimpedance amplifier; optical receivers; post-layout simulation; power 3.5 mW; power supply; regulated cascode input stage; size 0.18 mum; transimpedance gain; voltage 1.8 V; wideband operation; CMOS integrated circuits; CMOS technology; Gain; Impedance; Noise; Wideband; Amplifiers; differential; low power; optical receivers; wideband;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2013 IEEE 11th International
Conference_Location :
Paris
Print_ISBN :
978-1-4799-0618-5
DOI :
10.1109/NEWCAS.2013.6573594
