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Analog Devices AD22100AT — Discrete Semiconductors

AD22100AT Analog Devices Temperature Sensor, 22.5mV/°C

MPNAD22100AT
End of Life

Analog Devices AD22100AT, analog local temperature sensor, 22.5mV/°C output, -40°C to +85°C sensing, ±2°C accuracy, TO-92-3 through-hole package, ROHS3 compliant.

$14.08Ref. price · indicative, final on quote
PackagingTO-226-3, TO-92-3 (TO-226AA)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AD22100AT specifications
ParameterValue
Output typeAnalog Voltage
Sensor typeAnalog, Local
MountingThrough Hole
Voltage4V ~ 6.5V
Operating temperature-50°C ~ 150°C
PackageBag
Resolution22.5mV/°C
CaseTO-226-3, TO-92-3 (TO-226AA)
Test condition25°C (-40°C)
Accuracy - highest (Lowest)±2°C (±3.7°C)
Sensing temperature - local-40°C ~ 85°C

Product details

Output scaling and accuracy at the test point

The AD22100AT delivers a ratiometric analog voltage output scaled at 22.5 mV per degree Celsius. At the 25°C test condition the nominal output sits at 1.375 V (22.5 mV/°C × 25°C + 0.25 V offset typical), so a microcontroller ADC reading that voltage directly maps to temperature without external amplification. That ±3.7°C band at the extremes is the datasheet's guaranteed limit — for a cold-junction compensation application the tighter ±2°C at room temperature is the relevant figure for calibration.

The part operates from a 4 V to 6.5 V supply, which covers common 5 V ±10% rails. In a typical PLC analog input module or motor drive control board, the 4 V minimum supply means a 5 V rail with 20% ripple still keeps the sensor in regulation. The 150°C absolute-maximum storage rating gives margin for reflow or wave-solder profiles on the through-hole leads.

Through-hole TO-92 package fit

Housed in a TO-92-3 (TO-226AA) through-hole package, the AD22100AT mounts directly into a 0.100-inch pitch PCB footprint with 0.020-inch diameter lead holes. The three leads are the standard pinout: V+ (left), GND (center), VOUT (right) when the flat face is toward you. The bag packaging means the parts ship in anti-static bags, not tape-and-reel — typical for through-hole components ordered in engineering quantities or for manual assembly.

Frequently asked questions

What is the AD22100AT's output scaling and how do I read it with a microcontroller?

The AD22100AT outputs 22.5 mV per degree Celsius. At 25°C the output is approximately 1.375 V. A 5 V microcontroller ADC with 10-bit resolution (4.88 mV per count) resolves about 0.22°C per ADC step, which is well within the sensor's ±2°C accuracy at room temperature.

Can the AD22100AT replace the surface-mount AD22103KRZ-RL in an existing design?

No — the AD22103KRZ-RL is a surface-mount part with a different package and a 28 mV/°C output scale operating from a 2.7 V supply. The AD22100AT is through-hole TO-92, 22.5 mV/°C, and requires 4 V to 6.5 V. A board spin is required to swap between them.