Precision op amp reduces power consumption by 30% - Embedded.com

Precision op amp reduces power consumption by 30%

Analog Devices introduced a precision op amp optimized to meet the power, voltage, accuracy, and price requirements of portable battery-powered applications. The company claims that it's AD8500 consumes 30% less power than competing solutions and operates at just 1.8 V without sacrificing precision performance. This combination of low power, low voltage, and high precision translates into longer continuous battery-life for portable applications that require precision sensing to ensure accuracy. In addition, the op amp is available in a tiny standard surface-mount package to meet the size requirements of space-constrained battery-powered applications and is priced to meet the needs of high-volume markets.

The AD8500 CMOS op amp features a 1-μA maximum supply current. The device operates from a single supply voltage of +1.8 to +5.5 V or a dual supply voltage of ±0.9 V to ±2.75 V. The low voltage allows use with two cell batteries over the full discharge profile, thus extending battery lifetime.

The ability to swing rail-to-rail at both the input and output helps maximize the dynamic range and signal-to-noise ratio in systems that operate at very low voltages. The low offset voltage allows the AD8500 to be used in systems with high gain without having excessively large output offset errors and provides high accuracy without the need for system calibration.

The AD8500 precision op amp is available in production quantities now. Housed in a 5-lead SC-70 package, it is priced at $0.70 per unit in 1000 piece quantities. For more information, please visit www.analog.com/AD8500.

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