This paper proposes a dual-output Sample-and-Hold (SH) ultra low-power programmable voltage reference (SH-PVR). Our mixed-signal system regulates the ripple voltage on the output channels due to the leakage current, by monitoring the amplified ripple on a channel replica. The refresh frequency of the references is minimized for the minimum current consumption, while maintaining the ripple specification. Designed and implemented in TSMC 180-nm CMOS technology, the SH-PVR provides two references, with a programmability range [0.5 - 2] V, and a step size of 50 mV. The system achieves a current consumption of 330 nA, with an output ripple below 10 uV, and it is suitable for ultra low-power devices for IoT, wearable, and implantable applications.
A Low-Power Sample-and-Hold Programmable Voltage Reference Based on Ripple Monitoring / Caselli, Michele; Lukita, Budi; Boni, Andrea; Stanzione, Stefano. - (2023). (Intervento presentato al convegno ISCAS tenutosi a Monterey, USA nel 21/05/2023 - 25/05/2023) [10.1109/ISCAS46773.2023.10181550].
A Low-Power Sample-and-Hold Programmable Voltage Reference Based on Ripple Monitoring
Michele Caselli
;Andrea Boni;
2023-01-01
Abstract
This paper proposes a dual-output Sample-and-Hold (SH) ultra low-power programmable voltage reference (SH-PVR). Our mixed-signal system regulates the ripple voltage on the output channels due to the leakage current, by monitoring the amplified ripple on a channel replica. The refresh frequency of the references is minimized for the minimum current consumption, while maintaining the ripple specification. Designed and implemented in TSMC 180-nm CMOS technology, the SH-PVR provides two references, with a programmability range [0.5 - 2] V, and a step size of 50 mV. The system achieves a current consumption of 330 nA, with an output ripple below 10 uV, and it is suitable for ultra low-power devices for IoT, wearable, and implantable applications.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
