AD8556ARZ Instrumentation Amplifiers by Analog Devices

Semiconductors - ICs
> Amplifiers & Comparators
> Programmable Gain Amplifiers
Status: Production
Series: AD8556
RoHS: Compliant
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The AD8556 is a zero-drift, sensor signal amplifier withdigitally programmable gain and output offset. Designed toeasily and accurately convert variable pressure sensor andstrain bridge outputsto a well-defined output voltage range,the AD8556 accurately amplifies many other differential orsingle-ended sensor outputs. The AD8556 uses the ADIpatented low noise auto-zero and DigiTrim® technologies tocreate an incredibly accurate and flexible signal processingsolution in a very compact footprint.Gain is digitally programmable in a wide range from 70 to1,280 through a serial data interface. Gain adjustment canbe fully simulated in-circuit and then permanently programmedwith reliable polyfuse technology. Output offsetvoltage is also digitally programmable and is ratiometric to thesupply voltage. AD8556 also features internal EMI filters on theVNEG, VPOS, FILT and VCLAMP pins.In addition to extremely low input offset voltage, low inputoffset voltage drift, and very high dc and ac CMRR, the AD8556 also includes a pull-up current source at the input pinsand a pull-down current source at the VCLAMP pin. Thisallows open wire and shorted wire fault detection. A low-passfilter function is implemented via a single low cost externalcapacitor. Output clamping set via an external reference voltageallows the AD8556 to drive lower voltage 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 AD8556 is fully specified from −40°C to +140°C.Operating from single-supply voltages of 2.7 V to 5.5 V, theAD8556 is offered in the 8-lead SOIC_N, and 4 mm × 4 mm16-lead LFCSP_VQ.

Where to Buy

Prices starting from US$4.19

Distributor Stock
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Analog Devices
from US$4.19
1,086
in stock
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Newark Electronics
from US$6.80
375
in stock
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element14
from US$6.07
375
in stock
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Farnell
from US$5.60
375
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Features

EMI filters at input pins
Specified from −40°C to +140°C
Low offset voltage: 10 μV maximum
Low input offset voltage drift: 65 nV/°C maximum
High CMRR: 94 dB minimum
Digitally programmable gain and output offset voltage
Programmable output clamp voltage
Open and short wire fault detection
Low-pass filtering
Single-wire serial interface
Stable with any capacitive load
SOIC_N and LFCSP_VQ packages
4.5 V to 5.5 V operation

Alternative Descriptions

Pgm Sensor Amp W/EMI Filters | Analog Devices
Instrumentation Amp, 1.5Mhz, Nsoic | Newark Electronics
INSTRUMENTATION AMP, 1.5MHZ, NSOIC | element14

Frequently Asked Questions

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What category does AD8556ARZ fall under?

The AD8556ARZ is listed under Instrumentation Amplifiers.

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Is the AD8556ARZ RoHS compliant?

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

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