A low noise readout integrated circuit for Nb5N6 microbolometer array detector

Zhou Jiang; Chao Wan; Peng Xiao; Chengtao Jiang; Xuecou Tu; Xiaoqing Jia; Lin Kang; Jian Chen; Peiheng Wu

doi:10.1117/12.2251400

24 February 2017 A low noise readout integrated circuit for Nb₅N₆ microbolometer array detector

Zhou Jiang, Chao Wan, Peng Xiao, Chengtao Jiang, Xuecou Tu, Xiaoqing Jia, Lin Kang, Jian Chen, Peiheng Wu

Proceedings Volume 10103, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X; 101030A (2017) https://doi.org/10.1117/12.2251400
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We present a readout circuit for 1 × 64 Nb₅N₆ microbolometer array detector. The intrinsic average responsivity of the detectors in the array is 650 V/W, and the corresponding noise equivalent power (NEP) is 17 pW/√Hz. Due to the low noise of the detector, we design a low noise readout circuit with 64 channels. The readout integrated circuit (ROIC) is fabricated under CMOS process with 0.18μm design rule, which has built-in bias and adjustable numerical-controlled output current. Differential structure is used for each pixel to boost capacity of resisting disturbance. A multiplexer and the second stage amplifier is followed after the ROIC. It is shown that the ROIC achieves an average gain of ~47dB and a voltage noise spectral density of ~9.34nV/√Hz at 10KHz. The performance of this readout circuit nearly fulfills the requirements for THz array detector. This readout circuit is fit for the detector, which indicates a good way to develop efficient and low-cost THz detector system.

Conference Presentation

Citation Download Citation

Zhou Jiang, Chao Wan, Peng Xiao, Chengtao Jiang, Xuecou Tu, Xiaoqing Jia, Lin Kang, Jian Chen, and Peiheng Wu "A low noise readout integrated circuit for Nb₅N₆ microbolometer array detector", Proc. SPIE 10103, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications X, 101030A (24 February 2017); https://doi.org/10.1117/12.2251400

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available