AD8504 Datasheet
1 µA Micropower CMOS Operational Amplifier
1 µA Micropower CMOS Operational Amplifier
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The AD8504 are low power, precision CMOS operational amplifiers featuring a maximum supply current of 1 μA per amplifier. The AD8504 have a maximum offset voltage of 3 mV and a typical input bias current of 1 pA operating rail-to-rail on both the input and output. The AD8504 can operate from a single-supply voltage of +1.8 V to +5.5 V or a dual-supply voltage of ±0.9 V to ±2.75 V.
With its low power consumption, low input bias current, and rail-to-rail input and output, the AD8504 are ideally suited for a variety of battery-powered portable applications. Potential applications include bedside monitors, pulse monitors, glucose meters, smoke and fire detectors, vibration monitors, and backup battery sensors.
The ability to swing rail-to-rail at both the input and output helps maximize dynamic range and signal-to-noise ratio in systems that operate at very low voltages. The low offset voltage allows use of the AD8504 in systems with high gain without creating excessively large output offset errors. The AD8504 offer an additional benefit by providing high accuracy without the need for system calibration.
The AD8504 are fully specified over the industrial temperature range (−40°C to +85°C) and the extended industrial temperature range (−40°C to +125°C). The AD8504 is available in a 14-lead TSSOP surface-mount package.