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High precision (14 bit), high density (octal) analog to digital converter for spectroscopy applications
E T Subramaniam1, Mamta Jain, R K Bhowmik
1Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
The Review of Scientific Instruments
|December 3, 2008
Summary
This study developed a high-precision, eight-channel analog-to-digital converter (ADC) module for nuclear and particle physics spectroscopy. The cost-effective module ensures accurate data collection with minimal nonlinearity and crosstalk.
Area of Science:
- Nuclear and particle physics
- Instrumentation and measurement
Background:
- Large-scale detector experiments require advanced signal processing for high-volume data acquisition.
- Maintaining data precision and accuracy is critical during data collection in these experiments.
Purpose of the Study:
- To develop a high-precision pulse peak detection and analog-to-digital converter (ADC) module.
- To create a multi-channel module suitable for spectroscopy experiments, optimizing for density and performance.
Main Methods:
- Designed and developed an eight-channel, plug-in daughter card motherboard module.
- Integrated 14-bit resolution analog-to-digital conversion with low integral and differential nonlinearity.
Main Results:
- Achieved high density with small daughter card dimensions (4.2"x0.51").
- Demonstrated excellent integral nonlinearity (≤ ±2 mV or ±0.02% FSR) and differential nonlinearity (≤ ±1%).
- Ensured independent channels without cross-talk.
Conclusions:
- The developed ADC module meets the demanding requirements of nuclear and particle physics spectroscopy.
- Offers a cost-effective and maintainable solution for high-precision, multi-channel data acquisition.
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