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Analog Devices AD7818ARZ-REEL7 — Discrete Semiconductors

AD7818ARZ-REEL7 10-bit Digital Temperature Sensor, SPI

MPNAD7818ARZ-REEL7
End of Life

Analog Devices AD7818ARZ-REEL7, Digital Local Temperature Sensor, 10 b Resolution, SPI Output, 2.7V to 5.5V Supply, -55°C to 125°C Operating Temperature, 8-SOIC Package, Tape & Reel.

$10.27Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AD7818ARZ-REEL7 specifications
ParameterValue
Output typeSPI
Sensor typeDigital, Local
MountingSurface Mount
Supply voltage2.7V ~ 5.5V
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesOutput Switch
Resolution10 b
Case8-SOIC (0.154\", 3.90mm Width)
Test condition25°C (-40°C ~ 85°C)
Accuracy - highest (Lowest)±2°C (±3°C)
Sensing temperature - local-40°C ~ 85°C

Product details

The local sensing range is -40°C to 85°C, meaning the die itself must stay within that window for accurate measurement, but the device can survive storage and non-operating exposure down to -55°C and up to 125°C. The 8-SOIC package is surface-mount, so board-level conformal coating is straightforward if condensation is a concern.

For dual-sourcing or a pin-compatible alternate, the AD7814ARTZ-REEL7 is a close functional match — also a 10-bit digital local sensor with SPI output — but its accuracy spec differs slightly (±2°C typical, ±3.5°C maximum) and its sensing range extends to -55°C to 125°C. The AD7418ARMZ and AD7416ARZ-REEL7 are I²C-interface siblings, not SPI, so a bus-protocol change would be needed if swapping.

Frequently asked questions

Is AD7818ARZ-REEL7 compatible with 3.3V microcontrollers?

Yes. The supply range is 2.7 V to 5.5 V, so it runs directly on a 3.3 V rail. The SPI output logic levels track the supply voltage — at 3.3 V VDD, the output high is above 2.0 V, which meets 3.3 V CMOS input thresholds.

What is the closest functional second-source for AD7818ARZ-REEL7?

The AD7814ARTZ-REEL7 is the nearest SPI-interface, 10-bit digital temperature sensor. It has a slightly wider accuracy spec (±3.5°C max vs ±3°C) and a full -55°C to 125°C local sensing range. The AD7418ARMZ and AD7416ARZ-REEL7 are I²C parts — not drop-in replacements without a bus-protocol change.