The ISA-ASIC has been developed mainly for current measurement with very low resistance values for automotive applications. The extreme automotive requirements concerning reliability, temperature range and cost are well known and these were a big challenge during the development of the ASIC. Using a lOO micro-Ohm resistor as a current sensor the device should be able to measure the total current in the car or battery with a high dynamic, resolution and accuracy and on the other hand it should also be able to detect the idle current of only a few mA when the car is parked. The voltage generated by a current of 10 mA in a lOO micro-Ohm resistor is only l micro-Volt, which means that the ASIC must be fully offset free and the noise level must be very low. This means that the device must be of an ultimate quality -very close to what can be physically reached today- and it must be at the same time small and inexpensive.
ISA-ASIC - a complete 4-channel 16-bit date acquisition system for extremely low voltages
Sensor, International Conference, 12 ; 329-334
2005
6 Seiten, 14 Bilder
Conference paper
English
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