Monolithic Radiation-Hardened Quad-Channel Voter-IC

ZES’ Quad-Channel Voter-IC, ZES400, is a radiation-hardened monolithic microchip, embodying 4 channels of 3-input majority voters – each channel consists of a majority gate and an error indicator.

ZES400 features high radiation hardness against Total Ionizing Dose (TID), Single-Event-Latchup (SEL), and Single-Event-Transient (SET).  ZES400 is used to mitigate soft errors in digital circuits and systems.  It can be applied to support a Triple-Modular-Redundancy (TMR) system.

Summary

• • 1.8V to 5V voltage operation
• • Operating temperature: -55 °C to +125°C
• • Space enhanced plastic Package: QFN32L
• • Radiation Hardening by Design (RHBD)
• • Total Ionizing Dose (TID) characterized up to 300 Krad (Si) @ Co-60
• • SEL tested up to 110 MeV×cm2/mg
• • SET tested up to 83 MeV×cm2/mg
• • SEL/SET tolerance up to 4,600pJ laser energy (@1064nm laser wavelength)

Target Applications

• • Triple-Modular-Redundancy (TMR)
• • LEO/MEO/GEO Satellites
• • Lunar Vehicles/Missions
• • Deep Space Travel
• • High Reliability memory Applications

The ZES400 Voter IC is designed to facilitate Triple-Modular-Redundancy (TMR) implementation, enabling robust error correction and seamless data exchange between sub-systems in high-radiation environments.

Key Features & Benefits

• • Implements Triple-Modular-Redundancy (TMR) for robust error correction
• • Provides virtually glitch-free and error-free voted outputs
• • Generates error indication signals for system alerts
• • Supports various communication protocols (UART, SPI, etc.)Ideal for critical data bus applications in high-radiation environments

Functionality

• • Processes three redundant input signals to produce a single voted output
• • Enables error-free data exchange between two sub-systems
• • Virtually SET-free, ensuring high reliability in radiation-prone settings