Large format two-color CMOS ROIC for SLS detectors

The ISC0905 is a 640 × 512, large format, two-color CMOS readout integrated circuit (ROIC) designed for strained-layer superlattice (SLS) detectors. The detector interface is supported through one input pad in each 30 μm pixel. One bit in the serial control word programs the chip to automatically adjust all biases and timing to allow for the integration of either electrons or holes. This feature allows users to easily operate this ROIC with a wide variety of p-on-n or n-on-p detectors. The ROIC has been specifically designed to allow for both polarities of detectors to be placed back-to-back and to connect to the ROIC through a single input pad to obtain a two-color image. The two-color image is achieved by switching the ROIC mode between the two colors on a per frame basis. This paper will describe the interface, design and features of the ISC0905 ROIC as well as a summary of the characterization test results.