login
Tutorial on the Theory, Design and Characterization of a CMOS Transimpedance Amplifier
In this episode, Shahriar and Shayan discuss the design and characterization of a deceptively simple CMOS inverter-based transimpedance amplifier. The the large and small signal behavior of the CMOS inverter is discussed and measured using the Keithley 2450 and 2460 source meters. The transient response is also measured using a Keysight MSO-S series oscilloscope.
The small signal gain of the circuit is calculated from small signal parameters which are extracted directly by measuring the devices I/V characteristics. The NMOS/PMOS devices used are from an ADL1105 quad-discrete transistor IC. Through the use of a shunt-shunt feedback, the CMOS amplifiers is converted to a transimpedance amplifier which is capable of amplifying the current from a photo-detector diode by a gain of 30kV/A. The feedback theory is used to calculate the gain of the amplifier. The slides for this tutorial can be downloaded from The Signal Path website.
Tutorial on the Theory, Design and Characterization of a CMOS Transimpedance Amplifier – [Link]
RELATED POSTS
21 December, 2020 Super Sensor On A Chip can Monitor the Heart and Lungs using Sounds/Vibrations
3 December, 2023 Introducing CAPUF’s Feature-Rich CH32V003 Development Board
29 November, 2022 Texas Instruments INA241x Current Sense Amplifiers
23 January, 2020 45W USB-PD SMPS Reference Design Delivers 21.5W/in3
12 October, 2021 Pixblasters Announces New Firmware Updates for Its MS1 Video LED Controller
16 March, 2020 Caltech’s Low-Cost Sweat Sensor Tracks Stress Through Cortisol Levels
