AM457

AM457 is a high-precision integrated amplifier which has been developed to condition signals from small differential input voltages within a range of a few millivolts (±5 to ±100mV FS). The chief component of the IC is a highly accurate, low-noise amplifier circuit (AMP). An additional integrated operational amplifier (OP) can be used to supply a sensing lement with current or record temperature for sensor ridges powered by voltage, for example. The entire
system (sensing element plus amplifier) is monitored y the integrated diagnostic unit which logs any ensing element errors or defects, system ndervoltage, AMP overloads and excessive emperature. The various function groups are not
mutually dependent on one another; the AMP can be perated independently of the OP, for example. The unctionality of both component groups (AMP and P) is autonomous with regard to the diagnostic unit.

AM457 is a combination of high-impedance precision mplifier, additional OP and extensive diagnostic unit, nabling a self-monitoring sensor system to be ssembled using very few components.