Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov,...
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Transcript of Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov,...
![Page 1: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/1.jpg)
Pipelined ADCPipelined ADC
We propose two variants:low power and reliability optimized
A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov
![Page 2: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/2.jpg)
Proposed designs
• 7 bit 28 mW 20 Msps reliability optimized ADC
• 9 bit 9 mW 20 Msps power optimized ADC
We plan to test
![Page 3: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/3.jpg)
ADCs features
• Doubled number of S/H circuits
• OpAmps and comparators are shared between adjacent stages
reliable low power
![Page 4: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/4.jpg)
ADCs features (cont - 1)
• Using only accurate and offset compensated comparators
• Using zero DC consumption dynamic comparators
reliable low power
![Page 5: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/5.jpg)
ADCs features (cont - 2)
• Using maximum capacitor values and opamp currents for tolerable power
• Capacitor and opamp current values are scaled along down the pipeline
reliable low power
![Page 6: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/6.jpg)
1020 um
420
umADC area comparison
reliable
low power
The low power ADC has a halved area comparable with reliable variant
![Page 7: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/7.jpg)
Reliability vs. low power
• Higher degree of accuracy
• Functional redundancy
• No dynamic circuits – only relatively high static current comparators
• Lower power consumption more then 2 times
• Higher resolution• Lower area • Lower conversion
latency – 6 cycles instead 8
reliable low power
![Page 8: Pipelined ADC We propose two variants: low power and reliability optimized A. Gumenyuk, V. Shunkov, Y. Bocharov, A. Simakov.](https://reader035.fdocuments.us/reader035/viewer/2022062905/5a4d1adc7f8b9ab059975258/html5/thumbnails/8.jpg)
ConclusionWe going to examine two ADC design with
• Resolution 7 9 bits• Sampling Rate 20 20 Msps• Power consumption 28 9 mW• Input capacitance 1 0.7 pF• Supply voltage 1.8 1.8 V• Process 0.18um MM/RF UMC CMOS• Feature reliability low power