CERN Accelerating science

ACCURATE 2A

High-Precision ASIC for Ultra-Low Current Measurements spanning from -1 fA to -20 μA

The ACCURATE 2A ASIC is a specialized ultra-low current measurement device, designed for detailed electrical measurements ranging from 1 femtoamperes to 20 microamperes. This ASIC is primarily deployed as a front-end sensor interface in ionization chambers for radiation monitoring and is applicable in other sensitive measurement environments such as photodiode signal processing and current/charge-output sensor systems. Designed using a 130 nm process technology, the device features a compact die area of 1.95mm² and includes 26 input/output pads that enable flexible connectivity configurations.
 

The device employs a current-to-frequency conversion technique alongside a direct slope current measurement method to achieve a minimum resolution of 0.2 fA. It operates efficiently with a power consumption of 3 mW from a 3.3 V supply. The integrated circuit includes OTA, comparators, charge pumps, and a clock generator that collectively contribute to its high performance and measurement precision.

Advantages

Technical Precision
The ASIC distinguishes itself by maintaining a consistent accuracy across a broad dynamic range without the need for band switching. The demonstrated
global accuracy of ±2 % at 25 °C, sets a new benchmark in ultra-low current measurement.

Validated in rigorous environments
The ASIC's design and functionality have been thoroughly validated under rigorous conditions at leading research facilities and medical centers. The testing confirms its robustness and suitability for integration into high-stakes environments where precise current measurement is critical.

Integration Versatility
Designed multiple operational modes, the ACCURATE 2A offers exceptional adaptability for technical integrations, making it suitable for a wide range of electronic assemblies where precise current measurement is critical.

Intersatellite Communication and Radiation Monitoring System for CubeSats

The AstroMesh Integrated Monitoring System represents a revolutionary approach to space radiation monitoring and intersatellite communication. Rooted in CERN’s expertise in space electronics and successful missions like CELESTA,TRISAT-R and RADIOX AstroMesh offers a robust solution tailored for the expanding field of satellite constellations.

AstroMesh integrates advanced radiation sensors and a mesh network configuration, enhancing both communication and data reliability across satellite constellations. This system utilizes cutting-edge dosimetry technologies, including Floating Gate devices and SRAM sensors. These sensors are integrated with a radiation-tolerant wireless transceiver, enabling dynamic and resilient intersatellite communication. The design is optimized for low power consumption, requiring less than 100 milliwatts, which helps in extending the operational lifespan of satellites and maintaining their efficiency in the harsh environment of space. AstroMesh is tailored to improve the data reliability and communication capabilities of satellites, making it a vital component for modern satellite operations.

Advantages

Enhanced Communication Capabilities
AstroMesh enables mesh network configurations, allowing for self-healing, dynamic data routing and redundancy, which are critical for maintaining communication links in case of partial system failures.

Technical Precision
Maintains high performance and reliability in harsh space environments, ensuring precise radiation data collection.
 

Proven Performance
Built on successful CERN technologies operational in LHC and space missions, validated in rigorous environments.
 

Integration Versatility
Designed for easy integration into CubeSat platforms, offering scalability and adaptability for various space
missions.