Analog Devices Inc./Maxim Integrated MAX6581EVKIT+

Overview

MAX6581EVKIT+ from Analog Devices is an evaluation kit for the MAX6581 precision 8-channel temperature sensor IC, enabling rapid validation of local + 7-remote diode-based thermal monitoring in server and computing platforms. It supports SMBus/I²C interface configuration, resistance cancellation calibration, and real-time alert/OVERT output verification across -40°C to +125°C operation.

For engineers reviewing the MAX6581EVKIT+ datasheet, MAX6581EVKIT+ pinout, MAX6581EVKIT+ application, or MAX6581EVKIT+ equivalent, this kit provides hardware-validated reference design, register-level debug access, thermal fault simulation capability, and production-ready layout guidance for multichannel diode-sensing systems.

Technical Context

The MAX6581EVKIT+ implements the full signal chain of the MAX6581 IC: seven remote diode inputs (DXP1–DXP7/DXN1–DXN7), local die sensing, dual open-drain alarm outputs (ALERT/OVERT), and SMBus interface with pull-up resistors and level-shifting support. It includes on-board 0.1µF VCC bypassing, 100pF noise-filtering capacitors per remote channel, and configurable STBY control.

Kit functionality mirrors the IC's core architecture: 11-bit (0.125°C) resolution, ±1°C accuracy (60°C–100°C, remote), resistance cancellation enable/disable per channel, and programmable ALERT/OVERT thresholds via SMBus write-byte protocol. All 24-pin TQFN-EP footprint pads are accessible for probe points and test point soldering.

Key Specifications

Availability

MAX6581EVKIT+ is available at Aetrix Electronics and suitable for server thermal management validation, notebook power delivery monitoring, workstation cooling system development, and datacom board-level temperature profiling requiring stable component supply and rapid prototyping support.

Supply support for MAX6581EVKIT+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control applications.

The MAX6581 product line delivers multichannel thermal monitoring solutions for high-reliability computing infrastructure, with emphasis on accuracy, noise immunity, and SMBus interoperability in dense PCB environments.

FAQ

What is the primary function of the MAX6581EVKIT+?

The MAX6581EVKIT+ is an evaluation platform designed exclusively to validate the operation of the MAX6581 8-channel temperature sensor IC. It enables hardware-level testing of remote diode measurements, SMBus register programming, ALERT/OVERT alarm assertion, resistance cancellation calibration, and standby mode behavior - all using the exact pinout and electrical interface of the production IC.

Does the MAX6581EVKIT+ include the MAX6581 IC?

Yes, the MAX6581EVKIT+ ships with a pre-mounted MAX6581TG9A+ IC in its 24-pin TQFN-EP package. The kit is fully assembled and tested, providing immediate out-of-box functionality for temperature sensing validation without requiring soldering or component sourcing.

Can the MAX6581EVKIT+ be used to evaluate different MAX6581 variants?

Yes - the MAX6581EVKIT+ supports all MAX6581 variants sharing the same 24-pin TQFN-EP package and pinout, including MAX6581TG9A+, TG9C+, TG9E+, and TG98+. These differ only in SMBus slave address (0x9A/0x9C/0x9E/0x98); the kit's firmware and hardware are agnostic to address selection.

How does the MAX6581EVKIT+ support resistance cancellation testing?

The MAX6581EVKIT+ provides dedicated test points and jumper options to inject series resistance into any remote diode channel (DXP/DXN). This allows engineers to verify the MAX6581's resistance cancellation algorithm by comparing raw vs. compensated temperature readings - directly validating the feature described in the MAX6581 datasheet Section "Resistance Cancellation".

Is SMBus communication pre-configured on the MAX6581EVKIT+?

Yes - the MAX6581EVKIT+ includes onboard 4.7kΩ pull-up resistors on SMBCLK and SMBDATA lines, compliant with SMBus 400kHz timing requirements. It interfaces directly with standard SMBus masters (e.g., Raspberry Pi, Arduino with SMBus library, or dedicated bus analyzers) without external level-shifting or termination adjustments.