ADA4505-4ACBZ 精密放大器

ADA4505-4ACBZ

精密放大器 10uA RRIO Zero Input Quad

10 μA, Rail-to-Rail I/O, Zero Input  Crossover Distortion Amplifiers

FEATURES ADA4505-4ACBZ

PSRR: 100 dB minimum

CMRR: 105 dB typical

Very low supply current: 10 μA per amplifier maximum

1.8 V to 5 V single-supply or ±0.9 V to ±2.5 V dual-supply operation

Rail-to-rail input and output

3 mV offset voltage maximum

Very low input bias current: 0.5 pA typical

APPLICATIONS ADA4505-4ACBZ

Pressure and position sensors

Remote security

Medical monitors

Battery-powered consumer equipment

Hazard detectors

GENERAL DESCRIPTION ADA4505-4ACBZ

The ADA4505-1/ADA4505-2/ADA4505-4 are single, dual, and

quad micropower amplifiers featuring rail-to-rail input and output

swings while operating from a single 1.8 V to 5 V power supply

or from dual ±0.9 V to ±2.5 V power supplies.

Employing a new circuit technology, these low cost amplifiers

offer zero input crossover distortion (excellent PSRR and CMRR

performance) and very low bias current, while operating with a

supply current of less than 10 μA per amplifier.

This combination of features makes the ADA4505-x amplifiers

ideal choices for battery-powered applications because they

minimize errors due to power supply voltage variations over the

lifetime of the battery and maintain high CMRR even for a railto-rail

op amp.