New fully digital programmable gain amplifier scheme with reduced clipping noise for complementary metal oxide semiconductor image sensor

Xiangliang Jin; Zhibi Liu

doi:10.1117/1.3456706

1 June 2010 New fully digital programmable gain amplifier scheme with reduced clipping noise for complementary metal oxide semiconductor image sensor

Xiangliang Jin, Zhibi Liu

Author Affiliations +

Optical Engineering, Vol. 49, Issue 6, 063203 (June 2010). https://doi.org/10.1117/1.3456706

Abstract

We propose a fully digital programmable gain amplifier scheme that overcomes the clipped noise analog-to-digital converter (ADC) for complementary metal-oxide semiconductor (CMOS) image sensors. Adopting the new digital programmable gain amplifier (DPGA) scheme, it obtains low noise and low power usage, has a small size, and high robust gain characteristic. To reduce the clipping noise, one new current controling the reference voltage of a 9-bit flash ADC is brought about in this work. Using the fully digital amplification scheme with reduced clipping noise ADC solves almost all the problems of the conventional analog programmable gain amplifier (APGA) scheme, which has large noise, large power, and big chip size due to APGA, and two analog autozero loop (both clamping circuit loop and offset correction loop) circuits. Based on a 0.18-µm CMOS image sensor process, one product of video graphic array (VGA) format CMOS image sensor is fabricated. The silicon test shows a 68-dB dynamic range with the power consumption of 80 mW at 24 MHz and the total noise of about 2 mV (at 30 fps and 27 deg).

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Xiangliang Jin and Zhibi Liu "New fully digital programmable gain amplifier scheme with reduced clipping noise for complementary metal oxide semiconductor image sensor," Optical Engineering 49(6), 063203 (1 June 2010). https://doi.org/10.1117/1.3456706

Published: 1 June 2010

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

Members: $24.00

Non-members: $28.00 ADD TO CART

JOURNAL ARTICLE
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Analog electronics

CMOS sensors

Image processing

Digital signal processing

Optical amplifiers

Digital electronics

Image sensors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years