ETLG Inertial Aerosystems is introducing a 14-pin version of the popular 28-pin, high-temperature 12bit analogue to digital converter manufactured by US-based Honeywell. Designated the HTADC 12, the component is available in packaged or die form. It is designed to enable reliable measurement and control in high-temperature environments such as those experienced in deep drilling operations and inside jet engines. The technology was developed from the US Dept of Energy funded Deep Trek programme and claims to offer 4× better resolution compared with competitive offerings.
This device is a monolithic 12-bit 100,000 samples per second converter. The product can sustain reliable 225degC operation for up to 5 years and 300degC for 1 year. The input of the HTADC 12 allows easy interfacing to sensors for data conversion applications. The direct input supports 0V to 2.5V signals, and includes an on-chip buffer to allow for full 5V input signals. The outputs are 12bit parallel, 2× 8bit parallel and serial. The switched capacitor charge redistribution DAC architecture does not require a sample and hold input stage.
It is applicable for both multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single channel inputs at frequencies up to and well beyond the Nquist rate.
Although this product is primarily used in hot well oil drilling/monitoring and large jet engine control systems, there are many other industries where extreme high temperature is involved and where this product could be used. For more information about the 14-pin high-temperature 12bit analogue to digital converter go to www.inertial.co.uk.