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Analog Devices Inc. AD7414ARM-0REEL
- Part No.:
- AD7414ARM-0REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7414ARM-0REEL.pdf
- Description:
- IC SENSOR TEMP 10BIT DGTL 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,488
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Product details
Overview
AD7414ARM-0REEL 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 AD7414ARM-0REEL datasheet, AD7414ARM-0REEL pinout, AD7414ARM-0REEL application, or AD7414ARM-0REEL equivalent, key selection criteria include its ±0.5°C accuracy at +40°C, open-drain ALERT output with software-configurable polarity, 3 µA shutdown current, 800 ms automatic update rate, and pin-selectable I²C address via AS input - all critical for embedded thermal management systems requiring low-power, interrupt-driven temperature supervision.
Technical Context
The AD7414ARM-0REEL integrates a bandgap-based 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 the one-shot mode enables on-demand measurement via configuration register write.
It implements full SMBus/I²C slave functionality with 7-bit address (1001xxx), AS-pin-selectable addressing (three options per version), and dedicated ALERT output that functions as either hardware interrupt or SMBus alert. The device supports both active-high and active-low ALERT polarity, and includes THIGH/TLOW registers for threshold-based event detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5°C typical at +40°C; ±2.0°C max across −40°C to +125°C - enables precise thermal throttling without external calibration. |
| Resolution | 10-bit (0.25°C LSB) - provides fine-grained temperature discrimination for fan control and safety margins. |
| Supply Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level-shifting. |
| Conversion Time | 25 µs typical - allows rapid response to thermal transients in real-time monitoring. |
| Shutdown Current | 3 µA max - extends battery life in portable devices during idle periods. |
| I²C Address Options | Three addresses per version (float/GND/VDD on AS pin); AD7414-0 supports 1001000/1001001/1001010 - avoids bus conflicts in multi-sensor systems. |
| Alert Output | Open-drain ALERT with software-configurable polarity and reset - directly interfaces with microcontroller GPIO or SMBus host without pull-up dependency. |
Pinout & Package
AD7414ARM-0REEL 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 assembly and compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AS | Address Select Input | Configures one of three I²C addresses (float/GND/VDD); requires 1 kΩ pull-up/down for stable operation. |
| GND | Analog and Digital Ground | Common reference for sensor, ADC, and I²C interface; must be low-impedance connection to minimize noise. |
| VDD | Positive Supply Voltage | 2.7 V–5.5 V power input; decoupling capacitor (0.1 µF) required near pin for stable ADC performance. |
| SDA | Serial Data I/O | Open-drain bidirectional I²C data line; requires external pull-up resistor (typically 4.7 kΩ). |
| ALERT | Overtemperature Indicator Output | Open-drain interrupt output activated when temperature exceeds THIGH; polarity and enable controlled via configuration register. |
| SCL | Serial Clock Input | Input-only I²C clock line; synchronizes data transfer and supports standard/fast-mode timing (≥2.5 µs period). |
Key Features
| Feature | Design Value |
|---|---|
| On-chip bandgap temperature sensor | Delivers ±0.5°C accuracy at +40°C without external calibration or trimming components. |
| Programmable overtemperature alert | THIGH/TLOW registers allow user-defined trip points; ALERT output asserts within 25 µs of threshold breach. |
| Low-power operation modes | 3 µA shutdown current and 169 µA normal-mode standby enable energy-efficient thermal monitoring in always-on systems. |
| I²C/SMBus address flexibility | AS pin selects among three addresses per variant, enabling up to eight AD7414 units on one bus without address conflict. |
| Two conversion modes | Automatic (800 ms interval) and one-shot (software-triggered) modes support both periodic polling and event-driven sensing. |
Applications
| PC Motherboard Thermal Monitoring | Hard Disk Drive Temperature Supervision |
|---|---|
|
Use Scenario: Real-time CPU and chipset temperature tracking to prevent thermal throttling or shutdown. IC Role / Device Role / Timing Role: Primary ambient temperature sensor interfacing directly with system management controller via I²C. Use Value: ±0.5°C accuracy ensures reliable fan speed control and early warning before critical thresholds are reached. |
Use Scenario: Continuous monitoring of HDD enclosure temperature to prevent data corruption or mechanical failure. IC Role / Device Role / Timing Role: Standalone thermal watchdog with ALERT output wired to host processor interrupt line. Use Value: 25 µs conversion time and open-drain ALERT enable immediate response to sudden thermal events during read/write operations. |
| Industrial Process Controller | Office Equipment Thermal Safety |
|
Use Scenario: Ambient temperature feedback in programmable logic controllers for HVAC or motor drive cabinets. IC Role / Device Role / Timing Role: Local sensor node providing calibrated digital temperature data to microcontroller over shared I²C bus. Use Value: 6-lead SOT-23 footprint minimizes board space; 2.7–5.5 V supply range simplifies integration with existing 3.3 V or 5 V rails. |
Use Scenario: Overtemperature protection in laser printers and multifunction copiers during high-duty-cycle operation. IC Role / Device Role / Timing Role: Threshold-triggered safety monitor with THIGH register set to 75°C and ALERT driving thermal shutdown circuitry. Use Value: Software-configurable ALERT polarity and reset behavior allows seamless integration with legacy interrupt handlers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM/NOPB | 8-bit resolution (0.5°C), no ALERT output, fixed I²C address (1001100), −55°C to +125°C range | Lacks overtemperature interrupt capability and programmable thresholds; suitable only for basic temperature logging | Choose LM75BIMM/NOPB only if system does not require hardware alert signaling and can tolerate coarser resolution. |
| MAX31820MUA+ | 12-bit resolution (0.0625°C), 1-Wire interface, ±0.5°C accuracy, −55°C to +125°C, no ALERT pin | Uses single-wire bus instead of I²C; requires different firmware stack and lacks dedicated interrupt output | Select MAX31820MUA+ only when board layout constraints favor 1-Wire or higher resolution is mandatory and interrupt functionality is handled externally. |
Compared with LM75BIMM/NOPB and MAX31820MUA+, the AD7414ARM-0REEL uniquely combines I²C compatibility, ±0.5°C accuracy, 10-bit resolution, and a dedicated open-drain ALERT output - making it the only option among the three that delivers integrated hardware interrupt capability alongside precision thermal measurement in a 6-lead SOT-23 package.
Availability
AD7414ARM-0REEL is available at Aetrix Electronics and suitable for PC motherboard thermal monitoring, hard disk drive temperature supervision, and industrial process controller applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7414ARM-0REEL 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 consumer markets since 1965.
The AD7414ARM-0REEL belongs to Analog Devices' precision temperature sensor product line, designed specifically for embedded thermal management systems where accuracy, low power, and interrupt-driven responsiveness are essential.
FAQ
What is the operating temperature range of the AD7414ARM-0REEL?
The AD7414ARM-0REEL operates across −40°C to +125°C, meeting industrial-grade requirements. Its ±0.5°C typical accuracy at +40°C and ±2.0°C maximum error over the full range make it suitable for demanding environments like server chassis and motor control enclosures. The device is rated for storage from −65°C to +150°C and has a 150°C junction temperature limit.
Does the AD7414ARM-0REEL support I²C fast-mode speeds?
Yes, the AD7414ARM-0REEL supports I²C fast-mode operation up to 400 kHz. Its AC electrical specifications guarantee t1 ≥ 2.5 µs (SCL period), t2 ≥ 50 ns (setup), and t7 ≥ 35 ns (data hold), satisfying fast-mode timing requirements. Input filters can be disabled via the configuration register to improve timing margin, though EMC performance may be affected.
How is the ALERT output configured on the AD7414ARM-0REEL?
The ALERT output on the AD7414ARM-0REEL is configured using bits D5 (ALERT EN), D4 (ALERT POLARITY), and D3 (ALERT RESET) in the configuration register (address 0x01). D5 enables/disables the output, D4 sets active-high or active-low behavior, and D3 clears the ALERT latch. The output remains asserted until temperature falls below TLOW or the reset bit is written.
Can the AD7414ARM-0REEL perform temperature measurements while in shutdown mode?
Yes - the AD7414ARM-0REEL supports one-shot conversion during shutdown. Writing '1' to the ONE SHOT bit (D2) in the configuration register wakes the device, performs a single 25 µs conversion, loads the result into the temperature register, and returns to shutdown. This enables ultra-low-power wake-on-temperature-event operation without continuous polling.
What package type and lead count does the AD7414ARM-0REEL use?
The AD7414ARM-0REEL uses a 6-lead SOT-23 (RJ-6) package with 1.3 mm × 2.3 mm footprint and 1.0 mm height. Its thermal impedance is 190.4°C/W (junction-to-ambient, still air), supporting reliable operation in space-constrained applications such as SSD modules and compact industrial controllers. Lead finish is Pb-free, compliant with RoHS Directive 2011/65/EU.
AD7414ARM-0REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 10 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Sleep Mode
- Accuracy - Highest (Lowest):
- ±1.87°C (±3°C)
- Test Condition:
- 40°C (-40°C ~ 85°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
AD7414ARM-0REEL FAQ
1.How can I place an order for AD7414ARM-0REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7414ARM-0REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7414ARM-0REEL reliable?
The price and inventory of AD7414ARM-0REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7414ARM-0REEL is usually 5 days.
3.What payment methods are accepted for AD7414ARM-0REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7414ARM-0REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7414ARM-0REEL?
AD7414ARM-0REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7414ARM-0REEL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7414ARM-0REEL?
For technical support, including AD7414ARM-0REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7414ARM-0REEL requirements.
6.How does Aetrix verify that AD7414ARM-0REEL is sourced from the original manufacturer or authorized distributors?
All AD7414ARM-0REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7414ARM-0REEL meets industry standards.
7.What is the process for return or replacement of AD7414ARM-0REEL?
All AD7414ARM-0REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7414ARM-0REEL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7414ARM-0REEL part is unused and in its original packaging.
Return procedure for AD7414ARM-0REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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