AD8557ARZ Instrumentation Amplifiers by Analog Devices

Status: Production
Series: AD8557
RoHS: Compliant
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The AD8557 is a zero drift, sensor signal amplifier with digitallyprogrammable gain and output offset. Designed to easily andaccurately convert variable pressure sensor and strain bridgeoutputs to a well-defined output voltage range, the AD8557accurately amplifies many other differential or single-endedsensor outputs. The AD8557 uses the Analog Devices, Inc.,proprietary low noise auto-zero and DigiTrim® technologies tocreate an accurate and flexible signal processing solution in acompact footprint.Gain is digitally programmable in a wide range from 28 to 1300through a serial data interface. Gain adjustment can be fullysimulated in circuit and then permanently programmed withreliable polyfuse technology. Output offset voltage is also digitallyprogrammable and is ratiometric to the supply voltage.In addition to extremely low input offset voltage and inputoffset voltage drift and very high dc and ac CMRR, the AD8557also includes a pull-up current source at the input pins and apull-down current source at the VCLAMP pin. Output clampingset via an external reference voltage allows the AD8557 to drivelower voltage analog-to-digital converters (ADCs) safely andaccurately.When used in conjunction with an ADC referenced to the samesupply, the system accuracy becomes immune to normal supplyvoltage variations. Output offset voltage can be adjusted with aresolution of better than 0.4% of the difference between VDDand VSS. A lockout trim after gain and offset adjustmentfurther ensures field reliability.The AD8557 is fully specified from −40°C to +125°C.Operating from single-supply voltages of 2.7 V to 5.5 V, theAD8557 is offered in an 8-lead SOIC, and a 4 mm × 4 mm,16-lead LFCSP.

Where to Buy

Prices starting from US$3.09

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Analog Devices
from US$3.09
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element14
from US$4.48
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Farnell
from US$4.12
62
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Newark Electronics
from US$4.17
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Features

Very low offset voltage: 12 μV maximum over temperature 
Very low input offset voltage drift:  65 nV/°C maximum
High CMRR: 96 dB minimum 
Digitally programmable gain and output offset voltage 
Gain range from 28 to 1300 
Single-wire serial interface 
Stable with any capacitive load 
SOIC and LFCSP packages 
2.7 V to 5.5 V operation 
Qualified for automotive applications

Alternative Descriptions

Low Cost Wide Gain Signal Sens | Analog Devices
INSTRUMENTATION AMP, 8MHZ, 112DB, NSOIC | element14
Instrumentation Amp, 8Mhz, 112Db, Nsoic | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD8557ARZ?

Additional datasheets, footprints and schematics for AD8557ARZ are listed on our Part Details page. You can also find images and similar parts to AD8557ARZ on this page.

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What category does AD8557ARZ fall under?

The AD8557ARZ is listed under Instrumentation Amplifiers.

Can I view similar or alternative parts?

You can view similar parts to AD8557ARZ when available in the Instrumentation Amplifiers range under the specifications section at the bottom of the details page.

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Is the AD8557ARZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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Authorised distributors including Analog Devices, element14, Farnell and Newark Electronics have stock available or on a lead time for AD8557ARZ.

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