AD8628ART-R2 datasheet(3/24 Pages) AD

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AD8628/AD8629/AD8630

Rev. E | Page 3 of 24

GENERAL DESCRIPTION

This amplifier has ultralow offset, drift, and bias current. The

AD8628/AD8629/AD8630 are wide bandwidth auto-zero

amplifiers featuring rail-to-rail input and output swings and low

noise. Operation is fully specified from 2.7 V to 5 V single

supply (±1.35 V to ±2.5 V dual supply).

The AD8628/AD8629/AD8630 provide benefits previously

found only in expensive auto-zeroing or chopper-stabilized

amplifiers. Using Analog Devices’ topology, these zero-drift

amplifiers combine low cost with high accuracy and low noise.

No external capacitor is required. In addition, the AD8628/

AD8629/AD8630 greatly reduce the digital switching noise

found in most chopper-stabilized amplifiers.

With an offset voltage of only 1 μV, drift of less than

0.005 μV/°C, and noise of only 0.5 μV p-p (0 Hz to 10 Hz), the

AD8628/AD8629/AD8630 are suited for applications in which

error sources cannot be tolerated. Position and pressure sensors,

medical equipment, and strain gage amplifiers benefit greatly

from nearly zero drift over their operating temperature range.

Many systems can take advantage of the rail-to-rail input and

output swings provided by the AD8628/AD8629/AD8630 to

reduce input biasing complexity and maximize SNR.

The AD8628/AD8629/AD8630 are specified for the extended

industrial temperature range (−40°C to +125°C). The AD8628

is available in tiny TSOT-23, SOT-23, and the 8-lead narrow

SOIC plastic packages. The AD8629 is available in the standard

8-lead narrow SOIC and MSOP plastic packages. The AD8630

quad amplifier is available in 14-lead narrow SOIC and TSSOP

plastic packages.

AD8628ART-R2 数据表(PDF) 3 Page - Analog Devices