AD8504ARUZ-REEL

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1. DESCRIPTION

The AD8502/AD8504ARUZ-REEL are low power, precision CMOS operational amplifiers featuring a maximum supply current of 1 μA per amplifier. The AD8502/AD8504ARUZ-REEL have a maximum offset voltage of 3 mV and a typical input bias current of 1 pA operating railto-rail on both the input and output. The AD8502/AD8504ARUZ-REEL 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 AD8502/AD8504ARUZ-REEL 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 AD8502/AD8504ARUZ-REEL in systems with high gain without creating excessively large output offset errors. The AD8502 and AD8504ARUZ-REEL offer an additional benefit by providing high accuracy without the need for system calibration. The AD8502/AD8504ARUZ-REEL 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 AD8502 is available in an 8-lead, SOT-23 surface-mount package. The AD8504 is available in a 14-lead TSSOP surface-mount package.

2. FEATURES

    1. Supply current: 1 μA maximum/amplifier

    2. Offset voltage: 3 mV maximum

    3. Single-supply or dual-supply operation

    4. Rail-to-rail input and output

    5. No phase reversal

    6. Unity gain stable

3. APPLICATIONS

    1. Portable equipment

    2. Remote sensors

    3. Low power filters

    4. Threshold detectors

    5. Current sensing