GENERAL DESCRIPTION:

The AD8541/AD8542/AD8544 are single, dual, and quad rail-to-railinput and output, single-supply amplifiers featuring very low supplycurrent and 1 MHz bandwidth. All are guaranteed to operate from a2.7 V single supply as well as a 5 V supply. These parts provide 1MHz bandwidth at a low current consumption of 45 µA per amplifier.Very low input bias currents enable the AD8541/AD8542/AD8544to be used for integrators, photodiode amplifiers, piezoelectric sensors, and other applications with high source impedance. The supply current is only 45 μA per amplifier, ideal for battery operation.Rail-to-rail inputs and outputs are useful to designers bufferingASICs in single-supply systems. The AD8541/AD8542/AD8544 areoptimized to maintain high gains at lower supply voltages, makingthem useful for active filters and gain stages.The AD8541/AD8542/AD8544 are specified over the extendedindustrial temperature range (–40°C to +125°C). The AD8541 isavailable in 5-lead SOT-23, 5-lead SC70, and 8-lead SOIC packages. The AD8542 is available in 8-lead SOIC, 8-lead MSOP, and8-lead TSSOP surface-mount packages. The AD8544 is availablein 14-lead narrow SOIC and 14-lead TSSOP surface-mount packages. All MSOP, SC70, and SOT versions are available in tape andreel only. See the Ordering Guide for automotive models.

FEATURES:

► Single-supply operation: 2.7 V to 5.5 V

► Low supply current: 45 µA/amplifier

► Wide bandwidth: 1 MHz

► No phase reversal

► Low input currents: 4 pA

► Unity gain stable

► Rail-to-rail input and output

► AEC-Q100 qualified for automotive applications

APPLICATIONS:

► ASIC input or output amplifiers

► Sensor interfaces

► Piezoelectric transducer amplifiers

► Medical instrumentation

► Mobile communications

► Audio outputs

► Portable systems