Data Sheet

AD8541/AD8542/AD8544

CMOS Rail-to-Rail General-Purpose Amplifiers

Rev. H

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FEATURES

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Single-supply operation: 2.7 V to 5.5 V

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Low supply current: 45 µA/amplifier

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Wide bandwidth: 1 MHz

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No phase reversal

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Low input currents: 4 pA

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Unity gain stable

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Rail-to-rail input and output

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AEC-Q100 qualified for automotive applications

APPLICATIONS

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ASIC input or output amplifiers

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Sensor interfaces

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Piezoelectric transducer amplifiers

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Medical instrumentation

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Mobile communications

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Audio outputs

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Portable systems

GENERAL DESCRIPTION

The AD8541/AD8542/AD8544 are single, dual, and quad rail-to-rail

input and output, single-supply amplifiers featuring very low supply

current and 1 MHz bandwidth. All are guaranteed to operate from a

2.7 V single supply as well as a 5 V supply. These parts provide 1

MHz bandwidth at a low current consumption of 45 µA per amplifier.

Very low input bias currents enable the AD8541/AD8542/AD8544

to be used for integrators, photodiode amplifiers, piezoelectric sen-

sors, and other applications with high source impedance. The sup-

ply current is only 45 μA per amplifier, ideal for battery operation.

Rail-to-rail inputs and outputs are useful to designers buffering

ASICs in single-supply systems. The AD8541/AD8542/AD8544 are

optimized to maintain high gains at lower supply voltages, making

them useful for active filters and gain stages.

The AD8541/AD8542/AD8544 are specified over the extended

industrial temperature range (–40°C to +125°C). The AD8541 is

available in 5-lead SOT-23, 5-lead SC70, and 8-lead SOIC pack-

ages. The AD8542 is available in 8-lead SOIC, 8-lead MSOP, and

8-lead TSSOP surface-mount packages. The AD8544 is available

in 14-lead narrow SOIC and 14-lead TSSOP surface-mount pack-

ages. All MSOP, SC70, and SOT versions are available in tape and

reel only. See the Ordering Guide for automotive models.

PIN CONFIGURATIONS

Figure 1. 5-Lead SC70 and 5-Lead SOT-23 (KS and RJ Suffixes)

Figure 2. 8-Lead SOIC (R Suffix)

Figure 3. 8-Lead SOIC, 8-Lead MSOP, and 8-Lead TSSOP (R, RM, and RU

Suffixes)

Figure 4. 14-Lead SOIC and 14-Lead TSSOP (R and RU Suffixes)