Open AccessDual‐mode CMOS feed‐forward transimpedance amplifier for LADARs
Author(s) -
Kim SeungHoon,
Cho SangBock,
Park Sung Min
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.2678
Subject(s) - transimpedance amplifier , cmos , electronic engineering , amplifier , dual mode , electrical engineering , direct coupled amplifier , mode (computer interface) , computer science , differential amplifier , operational amplifier , optoelectronics , materials science , engineering , operating system
A dual‐mode transimpedance amplifier (TIA) is realised in a 0.18 μm CMOS technology for the applications of 1 Gbit/s laser detection and ranging (LADAR) systems. The proposed dual‐mode CMOS feed‐forward TIA consists of a voltage‐mode inverter input stage with a feedback resistor, followed by a current‐mode common‐gate amplifier with a feed‐forward technique applied at the gate so as to achieve low noise, low power consumption, high gain and wide bandwidth characteristics simultaneously. The measured results demonstrate 76 dBΩ transimpedance gain, 720 MHz bandwidth for 0.5 pF photodiode capacitance, −26.3 dBm sensitivity for 10 −12 bit error rate and 20.7 mW power dissipation from a single 1.8 V supply.