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Analog Devices ADM1026JST — Analog & Data Acquisition

ADM1026JST Hardware Monitor, ±3°C Accuracy, 48-LQFP

MPNADM1026JST
End of Life

ADI ADM1026JST Hardware Monitor, ±3°C accuracy, ADC/Comparator/Multiplexer/Register Bank topology, SMBus output, internal and external sensor support, fan output, 3V–5.5V supply, 48-LQFP surface mount.

$7.94Ref. price · indicative, final on quote
Analog Devices ADM1026JST datasheet (PDF)
Packaging48-LQFP
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ADM1026JST specifications
ParameterValue
Output typeSMBus
Sensor typeInternal and External
MountingSurface Mount
Supply voltage3V ~ 5.5V
Operating temperature0°C ~ 100°C
PackageBulk
Accuracy±3°C(Max)
FunctionHardware Monitor
TopologyADC, Comparator, Multiplexer, Register Bank
Output fanYes
Output alarmNo
Case48-LQFP
Sensing temperature0°C ~ 100°C

Product details

The Analog Devices ADM1026JST is a hardware monitor IC that integrates an ADC, comparator, multiplexer, and register bank to track system temperatures from both an internal sensor and up to two external diode-connected transistors. It also drives a fan output and communicates over SMBus, making it a single-chip thermal management solution for servers, telecom equipment, and industrial controllers where keeping a fan curve matched to die temperature matters.

The ±3°C maximum accuracy covers the 0°C to 100°C sensing range, including the internal sensor and external diode path.

Package and rework: 48-LQFP (7x7)

No last-time-buy pressure.

Frequently asked questions

What is the replacement or equivalent for ADM1026JST?

The closest functional equivalent is the ADM1027ARQ, which shares the same SMBus interface, internal/external sensor support, and fan output, but offers ±1°C accuracy (vs ±3°C) and a wider 0°C to 105°C operating range. The ADM1027ARQ is also RoHS-compliant, while the ADM1026JST is not. The ADM1028ARQ is another alternative with similar accuracy but no comparator or multiplexer topology.

What is ADM1026JST's listed accuracy?

The ADM1026JST has a maximum accuracy of ±3°C across its 0°C to 100°C sensing range, covering both the internal sensor and external diode inputs.