June 27, 2021 to July 1, 2021
Online
Europe/Brussels timezone

Development of an On-Chip configurable DAC array for Monolithic Active Pixel Sensor

Not scheduled
20m
Gather.town (Online)

Gather.town

Online

Poster presentation only Front end electronics and readout Poster session 2

Speaker

Dr Yao Wang ( Institute of Modern Physics, Chinese Academy of Science)

Description

As the leading research platform of heavy-ion science in China, the heavy-ion physics and heavy-ion applications at the Heavy Ion Research Facility in Lanzhou (HIRFL) drives the development of new detector technology. Thus, a Monolith Active Pixel Sensor (MAPS) is has been designed in a 130nm CMOS process.

The pixels can record the energy, time, and position of the hit particles. To be tuned and characterized for different applications, the pixels have been designed in a configurable method. This is done by providing the current and voltage to the pixel with a configurable DAC array, which consists of four 10bit voltage DACs, seven 8bit current DACs, a Bandgap, and an I2C interface. The voltage DAC is implemented with an R-2R resistor ladder network and each LSB corresponds to 2.4mV. The current DAC is in current-Steering type with thermometer Code. Each LSB of the current DAC corresponds to 10nA. The Bandgap provides a stable, temperature-independent reference current of 10uA and voltage of 600mV to the DACs. All the DACs can be accessed and configured with the I2C interface. The DAC array covers 3074*400um2 and the power consumption is 46.2mW. This paper will discuss the design, integration and performance the DAC array with the pixels in the MAPS.

Primary authors

Dr Yao Wang ( Institute of Modern Physics, Chinese Academy of Science) Dr Wei Zhou ( Institute of Modern Physics, Chinese Academy of Science) Prof. Chengxin Zhao (Institute of Modern Physics, CAS) Mrs Yuan Tian ( Institute of Modern Physics, Chinese Academy of Science) Dr Xiaoyang Niu ( Institute of Modern Physics, Chinese Academy of Science) Mr Qilin Wang ( Institute of Modern Physics, Chinese Academy of Science) Dr Ping Yang (Central China Normal University)

Presentation materials

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