TY - JOUR
T1 - Ultra-low power incremental delta-sigma ADC for energy harvesting sensor applications
AU - Salomaa, Jarno
AU - Jamali-Zavareh, Shiva
AU - Pulkkinen, Mika
AU - Chouhan, Shailesh Singh
AU - Halonen, Kari
PY - 2017/9
Y1 - 2017/9
N2 - This paper presents an ultra-low power incremental (Formula presented.) ADC with flexible sampling frequency, accuracy, and operational duty-cycle. The flexibility and low leakage power enable efficient scaling of average power together with performance. This allows simultaneous optimization of the sensor system (1) for various multiplexed, both on-chip and off-chip sensor interfaces, and (2) for a wide range of available harvested energy. The architecture allows further flexibility as it can be used in regular continuous (Formula presented.) mode as well, without trading off accuracy. The ADC was implemented in a 180 nm CMOS process, on the same ASIC with a temperature sensor, pressure sensor and energy harvesting functionalities. The ADC has a nominal power consumption of (Formula presented.)W, SNDR of 68 dB and BW of 200 Hz, denoting a (Formula presented.) pJ/conv.
AB - This paper presents an ultra-low power incremental (Formula presented.) ADC with flexible sampling frequency, accuracy, and operational duty-cycle. The flexibility and low leakage power enable efficient scaling of average power together with performance. This allows simultaneous optimization of the sensor system (1) for various multiplexed, both on-chip and off-chip sensor interfaces, and (2) for a wide range of available harvested energy. The architecture allows further flexibility as it can be used in regular continuous (Formula presented.) mode as well, without trading off accuracy. The ADC was implemented in a 180 nm CMOS process, on the same ASIC with a temperature sensor, pressure sensor and energy harvesting functionalities. The ADC has a nominal power consumption of (Formula presented.)W, SNDR of 68 dB and BW of 200 Hz, denoting a (Formula presented.) pJ/conv.
KW - Analog-to-digital
KW - Energy harvesting
KW - Incremental delta-sigma
KW - Sensor
KW - Ultra-low power
UR - http://www.scopus.com/inward/record.url?scp=85021698368&partnerID=8YFLogxK
U2 - 10.1007/s10470-017-0999-y
DO - 10.1007/s10470-017-0999-y
M3 - Article
AN - SCOPUS:85021698368
SN - 0925-1030
VL - 92
SP - 369
EP - 382
JO - Analog Integrated Circuits and Signal Processing
JF - Analog Integrated Circuits and Signal Processing
IS - 3
ER -