Analog Devices Inc. AD7414ARTZ-2REEL7

Overview

AD7414ARTZ-2REEL7 from Analog Devices is a ±0.5°C accurate, 10-bit digital temperature sensor in a 6-lead SOT-23 package, featuring SMBus/I²C-compatible serial interface, overtemperature alert (ALERT) output, and programmable high/low temperature thresholds. It operates from −40°C to +125°C with 0.25°C resolution and 25 µs typical conversion time, used for thermal monitoring in PC motherboards and hard disk drives.

For engineers reviewing the AD7414ARTZ-2REEL7 datasheet, AD7414ARTZ-2REEL7 pinout, AD7414ARTZ-2REEL7 application, or AD7414ARTZ-2REEL7 equivalent, key selection criteria include its ±0.5°C accuracy at +40°C, open-drain ALERT functionality, AS-pin-selectable I²C address (1001 110), 3 µA shutdown current, and compatibility with SMBus alert protocol in embedded thermal management systems.

Technical Context

The AD7414ARTZ-2REEL7 integrates a bandgap temperature sensor and successive-approximation ADC to deliver 10-bit temperature data in two's complement format. Its internal oscillator triggers automatic conversions every 800 ms, while one-shot mode enables on-demand measurement via configuration register write.

It implements an SMBus/I²C slave interface with 7-bit address 1001 110 (determined by AS = VDD on AD7414-1 variant), supports ALERT as open-drain interrupt/SMBALERT, and stores THIGH/TLOW limits in dedicated 8-bit registers for overtemperature event detection and hysteresis control.

Key Specifications

Pinout & Package

AD7414ARTZ-2REEL7 is housed in a RoHS-compliant, lead-free 6-lead SOT-23 (RJ-6) package with 1.9 mm × 2.9 mm footprint and 0.95 mm height, optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital temperature sensor applications.

Compared with LM75BIMMX/NOPB and MAX31820MUA+, AD7414ARTZ-2REEL7 uniquely combines ±0.5°C accuracy, hardware ALERT interrupt, SMBus alert compliance, and AS-pin address flexibility-making it the only option that satisfies both precision thermal monitoring and platform-level hardware fault signaling in PC and storage systems.

Availability

AD7414ARTZ-2REEL7 is available at Aetrix Electronics and suitable for PC motherboard thermal management, hard disk drive temperature control, and industrial PLC cabinet monitoring requiring stable component supply across extended product lifecycles.

Supply support for AD7414ARTZ-2REEL7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

AD7414ARTZ-2REEL7 belongs to Analog Devices' precision temperature sensor product line, engineered specifically for SMBus/I²C-based thermal management in space-constrained computing and storage platforms where accuracy, low power, and hardware interrupt capability are mandatory.

FAQ

What is the I²C address of AD7414ARTZ-2REEL7 and how is it configured?

The AD7414ARTZ-2REEL7 is the AD7414-1 variant with AS pin tied to VDD, resulting in a fixed 7-bit I²C address of 1001 110 (0x4E). This address is confirmed in Table 4 of the Rev. H datasheet and enables co-location with up to seven other AD7414 units on the same SMBus. No external address pins or EEPROM are needed-addressing is purely hardware-configured via the AS terminal.

Does AD7414ARTZ-2REEL7 support SMBus alert functionality?

Yes, AD7414ARTZ-2REEL7 supports full SMBus alert (SMBALERT) functionality via its open-drain ALERT pin. When enabled in the configuration register and temperature exceeds THIGH, ALERT asserts as a hardware interrupt compatible with SMBus host controllers. This is explicitly documented in the "PRODUCT HIGHLIGHTS" and "Functional Description" sections of the datasheet.

What is the maximum operating temperature range for AD7414ARTZ-2REEL7?

AD7414ARTZ-2REEL7 is rated for −40°C to +125°C operation (A grade), as specified in the "Absolute Maximum Ratings" and "Specifications" tables of the Rev. H datasheet. This range is validated across supply voltages from 2.7 V to 5.5 V and applies to both accuracy and functional operation-including ALERT assertion and register access.

How does the ALERT output behave when temperature crosses THIGH and TLOW thresholds?

When temperature exceeds THIGH, AD7414ARTZ-2REEL7 asserts ALERT (active-low by default); it remains asserted until either the alert reset bit is written in the configuration register or temperature falls below TLOW. The TLOW register sets hysteresis to prevent chatter-this dual-threshold behavior is defined in the "Functional Description" and "AD7414 THIGH/TLOW Register" sections of the datasheet.

Can AD7414ARTZ-2REEL7 operate in shutdown mode while retaining I²C communication capability?

Yes, AD7414ARTZ-2REEL7 supports full I²C communication-including register reads and writes-in shutdown mode (PD = 1). A one-shot conversion can be triggered by setting the ONE SHOT bit, causing the device to wake, convert, and return to shutdown automatically. This is detailed in the "Configuration Register" and "Power-Down Mode" subsections of the datasheet.