Analog Devices Intros AD8538/AD8613 Series Amplifiers

Analog Devices Inc. (ADI, Wilmington, MA) announced its new AD8538 Series of auto-zero amplifiers and the AD8613 family of operational amplifiers (op amps), which both operate at low voltages and consume minimal power without sacrificing the accuracy required by portable applications that need precise signal conditioning. The AD8538 Series amplifiers are suitable for signal paths with low offset voltage and offset voltage drift over time and temperature such as automotive electronics, themal sensors and medical equipment. The AD8613 family of op amps offers a combination of low noise, low power, low voltage, and low price.

Requiring a supply current of only 150 µA, the AD8538 offers 0.01 µV/°C offset drift. The device's precision-12 µV maximum offset and 1 µV p-p of low-frequency noise--enable accurate and stable system designs without the cost, size, and complexity of solutions utilizing external auto-calibration. The AD8613, AD8617, and AD8619 devices are single, dual and quad op amps with rail-to-rail inputs and outputs that deliver low noise and low power. Fully guaranteed low-voltage operation down to 1.8 V makes the AD861x suitable for battery-operated devices, such as temperature monitors and carbon dioxide detectors, where power management and reliability are critical. The AD8613 family of devices feature supply current of 38 µA maximum, and voltage operation from 1.8 V to 5 V. The devices achieve high levels of precision in consumer-medical and low-cost industrial applications with a low offset voltage of 2 mV maximum, an ultra-low input bias current of 1 pA maximum, and low noise of 22 nV/rt-Hz. The devices are well suited for portable applications that require amplification while maintaining low noise throughout the signal path. The rail-to-rail outputs make them suitable for driving analog-to-digital converters and buffering digital-to-analog converters in lower-power, 12-bit to 16-bit applications.

The AD8538, available now in production quantities, is packaged in both TSOT-23 and narrow SOIC-8 packages and is priced at $0.89 per unit in 1,000-piece quantities. The single AD8613 is sampling now with production quantities available in January 2006. The dual AD8617 and quad AD8619 are available in full production quantities now. The AD8613 is packaged in both SC-70 and 5-lead TSOT and is priced at $0.45 per unit in 1,000-piece quantities. The AD8617 is packaged in the eight-lead MSOP package and the eight-lead narrow SOIC package, and is priced at $0.70 per unit in 1,000-piece quantities. The AD8619 is packaged in a 14-lead TSSOP package and a 14-lead SOIC package, and is priced at $1.10 in 1,000-piece quantities.