Analog Devices Inc. AD7414ART-1REEL

Overview

AD7414ART-1REEL 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 hard disk drives, PCs, and embedded control systems.

For engineers reviewing the AD7414ART-1REEL datasheet, AD7414ART-1REEL pinout, AD7414ART-1REEL application, or AD7414ART-1REEL equivalent, key selection considerations include its 6-pin SOT-23 footprint, open-drain ALERT functionality, I²C address select via AS pin, and guaranteed ±0.5°C accuracy at +40°C - critical for fan control, system shutdown, and thermal event logging in space-constrained designs.

Technical Context

The AD7414ART-1REEL integrates a bandgap-based temperature sensor and successive-approximation ADC to deliver 10-bit twos-complement temperature data with 0.25°C LSB resolution. Its internal oscillator triggers automatic conversions every 800 ms, while the one-shot mode enables on-demand measurement initiated via configuration register write.

It implements full SMBus/I²C slave functionality with configurable 7-bit address (1001xxx), AS pin-selectable addressing across three options per version, and open-drain ALERT output supporting both interrupt and SMBus ALERT protocols. The ALERT pin is software-controllable for polarity and reset, and activates when temperature exceeds THIGH register value.

Key Specifications

Pinout & Package

AD7414ART-1REEL is housed in a 6-lead SOT-23 (RJ-6) package with 190.4°C/W junction-to-ambient thermal resistance, optimized for surface-mount reflow assembly and compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM75BIMM/NOPB and MAX31820MUA+, the AD7414ART-1REEL uniquely combines 10-bit resolution, ±0.5°C accuracy across operating range, programmable ALERT with hardware threshold registers, and AS pin address flexibility - making it optimal for robust, interrupt-driven thermal protection in I²C/SMBus systems.

Availability

AD7414ART-1REEL is available at Aetrix Electronics and suitable for hard disk drives, PC motherboard thermal management, and industrial PLC cabinet monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD7414ART-1REEL 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, communications, automotive, and consumer markets since 1965.

The AD7414ART-1REEL belongs to Analog Devices' precision temperature sensor product line, designed specifically for reliable, low-power, interrupt-capable thermal monitoring in space-constrained embedded systems.

FAQ

What is the accuracy specification of the AD7414ART-1REEL over its full operating temperature range?

The AD7414ART-1REEL guarantees ±2.0°C maximum accuracy across −40°C to +125°C at 3 V supply, and ±3.0°C maximum at 5.5 V supply. Its best accuracy is ±0.5°C typical at +40°C with 3 V supply - a value 100% production tested. This performance is achieved without external calibration due to on-chip bandgap sensor and trimming.

Does the AD7414ART-1REEL support I²C fast-mode operation?

Yes, the AD7414ART-1REEL supports I²C fast-mode (400 kHz) with input filters enabled, meeting timing parameters including t1 ≥ 2.5 µs and t2 ≥ 50 ns. The SDA and SCL pins are designed for standard I²C bus capacitance limits, and the part includes configurable filter bypass (via D6 bit) for higher-speed or lower-EMI operation depending on system requirements.

How does the ALERT output function in the AD7414ART-1REEL?

The ALERT output in the AD7414ART-1REEL is an open-drain, software-configurable interrupt that asserts when temperature exceeds the THIGH register value. Its polarity (active-high/active-low) and enable/disable state are controlled via the configuration register (D4 and D5 bits). ALERT can also serve as SMBus ALERT signal, and deactivates automatically when temperature falls below TLOW or upon manual reset via D3 bit.

Can the AD7414ART-1REEL operate in power-down mode while retaining I²C responsiveness?

Yes - the AD7414ART-1REEL supports full power-down (D7 = 1) with 3 µA max current, yet remains responsive to I²C writes. Writing to the configuration register with D2 = 1 initiates a one-shot conversion: the device powers up, completes measurement in 25 µs, loads result into register, and returns to shutdown - ideal for battery-powered wake-on-temperature applications.

What package and lead count does the AD7414ART-1REEL use, and is it RoHS compliant?

The AD7414ART-1REEL uses a 6-lead SOT-23 (RJ-6) package with 0.95 mm pitch and 2.9 mm × 1.6 mm footprint. It is RoHS compliant and qualified for Pb-free reflow soldering per JEDEC J-STD-020, with peak temperature rating of 260°C for 20–40 seconds - fully compatible with modern automated assembly processes.