AD8628ARTZ Analog Devices, AD8628ARTZ Datasheet

AD8628ARTZ

Manufacturer Part Number

AD8628ARTZ

Description

Manufacturer

Analog Devices

Datasheet

1.AD8628ARTZ.pdf (20 pages)

Specifications of AD8628ARTZ

Date_code

10+

Packing_info

SOT23-5

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FEATURES

Lowest auto-zero amplifier noise

Low offset voltage: 1 μV

Input offset drift: 0.002 μV/°C

Rail-to-rail input and output swing

5 V single-supply operation

High gain, CMRR, and PSRR: 130 dB

Very low input bias current: 100 pA maximum

Low supply current: 1.0 mA

Overload recovery time: 50 μs

No external components required

APPLICATIONS

Automotive sensors

Pressure and position sensors

Strain gage amplifiers

Medical instrumentation

Thermocouple amplifiers

Precision current sensing

Photodiode amplifiers

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 swing 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, Inc., 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 where 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.

Rev. G

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

Zero-Drift, Single-Supply, Rail-to-Rail

Input/Output Operational Amplifier

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

The AD8628/AD8629/AD8630 are specified for the extended

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

is available in tiny 5-lead TSOT, 5-lead SOT-23, and 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

14-lead TSSOP plastic packages.

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

Figure 3. 8-Lead SOIC_N (R-8) and 8-Lead MSOP (RM-8)

Figure 1. 5-Lead TSOT (UJ-5) and 5-Lead SOT-23 (RJ-5)

AD8628/AD8629/AD8630

OUT B

OUT A

PIN CONFIGURATIONS

+IN B

–IN A

+IN A

–IN A

+IN A

–IN B

OUT

–IN

+IN

V–

+IN

Figure 2. 8-Lead SOIC_N (R-8)

V–

V+

NC = NO CONNECT

(Not to Scale)

AD8628

TOP VIEW

AD8628

TOP VIEW

AD8629

TOP VIEW

AD8630

TOP VIEW

V+

OUT

V+

–IN

V+

OUT B

–IN B

+IN B

OUT D

–IN D

+IN D

V–

+IN C

–IN C

OUT C

www.analog.com

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