Data Sheet

AD8603/AD8607/AD8609

Precision Micropower, Low Noise CMOS, Rail-to-Rail Input/Output Operational

Amplifiers

Rev. D

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FEATURES

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Low offset voltage: 50 µV maximum

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Low input bias current: 1 pA maximum

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Single-supply operation: 1.8 V to 5 V

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Low noise: 22 nV/√Hz

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Micropower: 50 µA maximum

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Low distortion

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No phase reversal

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Unity gain stable

APPLICATIONS

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Battery-powered instrumentation

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Multipole filters

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Sensors

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Low power ASIC input or output amplifiers

GENERAL DESCRIPTION

The AD8603/AD8607/AD8609 are single/dual/quad micro-power

rail-to-rail input and output amplifiers, respectively, that feature very

low offset voltage as well as low input voltage and current noise.

These amplifiers use a patented trimming technique that achieves

superior precision without laser trimming. The parts are fully speci-

fied to operate from 1.8 V to 5.0 V single supply or from ±0.9

V to ±2.5 V dual supply. The combination of low offsets, low

noise, very low input bias currents, and low power consumption

makes the AD8603/AD8607/AD8609 especially useful in portable

and loop-powered instrumentation.

The ability to swing rail to rail at both the input and output enables

designers to buffer CMOS ADCs, DACs, ASICs, and other wide

output swing devices in low power, single-supply systems.

The AD8603 is available in a tiny 5-lead TSOT package. The

AD8607 is available in 8-lead MSOP and 8-lead SOIC packages.

The AD8609 is available in 14-lead TSSOP and 14-lead SOIC

packages.

PIN CONFIGURATIONS

Figure 1. 5-Lead TSOT (UJ Suffix)

Figure 2. 8-Lead MSOP (RM Suffix)

Figure 3. 8-Lead SOIC (R Suffix)

Figure 4. 14-Lead TSSOP (RU Suffix)

Figure 5. 14-Lead SOIC (R Suffix)