Overview: HMXADC9225
Radiation Hardened 12-Bit, 20 MSPS Monolithic A/D Converter
The HMXADC9225 is a radiation hardened monolithic, single supply, 12-bit, 20 MSPS, analog-to-digital converter with an on-chip, high performance sample-andhold amplifier. The HMXADC9225 uses a multistage differential pipelined architecture with output error correction logic to provide 12-bit accuracy at 20 MSPS data rates, and guarantees no missing codes over the full operating temperature range. The HMXADC9225 is fabricated on a radiation hardened SOI-IV Silicon On Insulator (SOI) process with very low power consumption. The input of the HMXADC9225 allows for easy interfacing to space and military imaging, sensor, and munications systems. With a truly differential input structure, the user can select a variety of input ranges and offsets including singleended applications. The dynamic performance is excellent. The sample-and-hold amplifier (SHA) is well suited for both multiplexed systems that switch full-scale voltage levels in successive channels and sampling single-channel inputs at frequencies up to and well beyond the Nyquist rate. A single clock input is used to control all internal conversion cycles. The digital output data is presented in straight binary output format.
