A CMOS Interface Circuit Design for a 32-level Resolution Light Sensor
A new design of interface circuit for CMOS Light sensor for pH monitoring applications is presented here. The proposed design is useful to read color (wavelength) values with the help of a photodiode and outputs a digital word representing the color value. It operates by continuously comparing analo...
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| Main Authors: | , , |
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| Format: | Citation Index Journal |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.utp.edu.my/9004/1/IREMOS_vol_5_n_4.html http://eprints.utp.edu.my/9004/ |
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| Summary: | A new design of interface circuit for CMOS Light sensor for pH monitoring applications is presented here. The proposed design is useful to read color (wavelength) values with the help of a photodiode and outputs a digital word representing the color value. It operates by continuously comparing analog voltage output from an optical transducer against a pre-stored reference levels in two cascaded stages.The design provides few advantages such as faster speed; less power consumption; higher resolution with smaller number of storage units; and small area for on-chip integration. A simulation result implementing 32 levels of resolution is presented. |
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