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Instrumentation amp claims 'unmatched' DC precision, AC bandwidth

Posted: 22 Aug 2007 ?? ?Print Version ?Bookmark and Share

Keywords:instrumentation amplifier? DC precision? AC bandwidth?


Designed for DAQ systems, ATE and biomedical instruments, Analog Devices Inc.'s AD8253 digitally programmable instrumentation amplifier can reach gains of 1,000 while offering DC precision and AC bandwidth that the company claims to be unmatched by other in-amps or discrete solutions on the market. A large gain setting allows small signals, such as those from sensors, to be amplified to drive an ADC.

The new device is digitally programmable with gain settings of 1, 10, 100 and 1,000allowing users adjust gain even after the devices are designed into the system. Operating from 5V to 15V, it achieves 10MHz bandwidth and 0.5?s settling time to 0.01 percent. The input offset drift of 1.2?V/C and gain drift of 10ppm/C is the lowest of any programmable gain in-amp. Manufactured using ADI's iCMOS (industrial CMOS) process technology, the AD8253 draws just 4mA of quiescent current and is available in 10-lead MSOP packages.

AD8253 is the newest member of digitally programmable instrumentation amplifiers from ADI, complementing the AD8250 and AD8251. Moreover, the AD8253 is tailored to operate with high-performance ADCs.

The new instrumentation amplifier is sampling now in a 10-lead MSOP package with production quantities available in October. It is specified over the -40C to 85C temperature range, making it a suitable solution for applications where size and packaging density are important considerations. AD8253 is priced at $4.95 per unit in 1,000-unit quantities.

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