Abstract
A detailed comparison between four types of pixels, based on a CMOS active column sensor (ACS) output chain technique is presented. A test chip of 64×64 pixels consisting of four 16×64 arrays, each with a different output chain, has been implemented in 0.35μm CMOS technology available through MOSIS and operated via a 3.3V supply. The chip includes four different amplifier/pixel combinations: (a) an n-channel based voltage amplifier with an n-channel reset transistor, (b) an n-channel based voltage amplifier with a p-channel reset transistor, (c) a p-channel based voltage amplifier with an n-channel reset transistor, (d) a p-channel based current mirror with an n-channel reset transistor. Pixel and output chain architectures are discussed, their operation is explained, simulations results are presented and measurements from a test chip are reported.
| Original language | English |
|---|---|
| Pages (from-to) | 304-311 |
| Number of pages | 8 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 116 |
| Issue number | 2 |
| DOIs | |
| State | Published - 15 Oct 2004 |
| Externally published | Yes |
Bibliographical note
Funding Information:The authors thank D. Goldin and A. Belenky for technical support. The authors also wish to acknowledge the financial support of the Israeli Ministry of Science in this project.
Funding
The authors thank D. Goldin and A. Belenky for technical support. The authors also wish to acknowledge the financial support of the Israeli Ministry of Science in this project.
| Funders | Funder number |
|---|---|
| Israeli Ministry of Science |
Keywords
- Active column sensor
- Active pixel sensor
- CMOS imagers
- Output chain
- Unity gain amplifier