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Analog Devices Inc. AD7414ARM-0
- Part No.:
- AD7414ARM-0
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7414ARM-0.pdf
- Description:
- IC SENSOR TEMP 10BIT DGTL 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,742
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Product details
Overview
AD7414ARM-0 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-0 datasheet, AD7414ARM-0 pinout, AD7414ARM-0 application, or AD7414ARM-0 equivalent, key selection criteria include its ±0.5°C accuracy at +40°C, open-drain ALERT functionality, AS-pin-selectable I²C address (1001000b when floating), 3 µA shutdown current, and compatibility with SMBus alert protocol in embedded thermal management systems.
Technical Context
The AD7414ARM-0 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 via configuration register write.
It implements an SMBus/I²C slave interface with 7-bit address (1001xxx), AS pin selecting among three addresses per version, and supports both normal and full power-down modes. The ALERT output is open-drain, software-configurable for active-high/active-low polarity, and latched until reset by configuration bit or temperature falling below TLOW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5°C typ at +40°C - enables precise thermal throttling without calibration in PC and storage applications |
| Resolution | 10-bit / 0.25°C - provides fine-grained temperature discrimination for fan control and safety margins |
| Conversion Time | 25 µs typ - allows rapid response to thermal transients during system stress testing |
| Supply Range | 2.7 V to 5.5 V - supports direct integration into 3.3 V and 5 V logic domains without level-shifting |
| Shutdown Current | 3 µA max - extends battery life in portable devices during idle thermal monitoring cycles |
| I²C Address | 1001000b (AS floating) - enables multi-sensor bus topology with no address conflict on shared SMBus lines |
| Operating Range | −40°C to +125°C - meets industrial and automotive under-hood ambient requirements |
Pinout & Package
AD7414ARM-0 is housed in a 6-lead SOT-23 (RJ-6) package with exposed pad for thermal performance; footprint matches JEDEC MO-178AA standard and supports reflow soldering per IPC-J-STD-020D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AS | Address Select Input | Logic input that selects one of three I²C addresses (1001000b, 1001001b, or 1001010b); requires 1 kΩ pull-up/down resistor |
| GND | Analog/Digital Ground | Common reference for sensor, ADC, and I²C interface; must be low-impedance connection to minimize noise coupling |
| VDD | Positive Supply | 2.7 V–5.5 V power input; decoupling capacitor (0.1 µF) required near pin for stable ADC operation |
| SDA | Serial Data I/O | Open-drain bidirectional I²C/SMBus data line; requires external pull-up resistor (typically 4.7 kΩ) |
| ALERT | Overtemperature Output | Open-drain interrupt/alert signal activated when temperature exceeds THIGH; configurable polarity and software-resettable |
| SCL | Serial Clock Input | Input-only I²C/SMBus clock line; accepts standard 100 kHz or 400 kHz timing with built-in input filters |
Key Features
| Feature | Design Value |
|---|---|
| On-chip bandgap temperature sensor | Delivers ±0.5°C accuracy at +40°C without external calibration components or trimming |
| Programmable ALERT threshold | THIGH and TLOW registers allow custom overtemperature trip points with 1°C resolution for application-specific thermal shutdown |
| SMBus alert compatibility | ALERT pin functions as SMBALERT signal, enabling direct integration with host controllers supporting SMBus alert response protocol |
| One-shot conversion mode | Enables on-demand temperature reads without altering automatic 800 ms update rate, reducing average power in burst-monitoring scenarios |
| AS-pin address selection | Three hardware-selectable I²C addresses per device version eliminate software address management overhead in multi-sensor systems |
Applications
| Hard Disk Drive Thermal Monitoring | PC Motherboard Fan Control |
|---|---|
Use Scenario: Real-time temperature tracking of HDD spindle motor and controller ICs during sustained read/write operations. IC Role / Device Role / Timing Role: Primary temperature sensor feeding thermal data to system management controller for dynamic spin-down or error logging. Use Value: ±0.5°C accuracy ensures reliable detection of 5°C+ thermal excursions before mechanical failure, extending drive lifetime. | Use Scenario: Ambient and VRM temperature sensing adjacent to CPU socket to modulate PWM fan speed. IC Role / Device Role / Timing Role: Local thermal monitor interfacing directly with baseboard management controller (BMC) via SMBus. Use Value: 25 µs conversion time and ALERT interrupt enable sub-second fan response to CPU load spikes, reducing acoustic noise. |
| Industrial PLC Cabinet Monitoring | Network Switch Power Supply Protection |
Use Scenario: Ambient temperature supervision inside sealed control cabinets housing programmable logic controllers. IC Role / Device Role / Timing Role: Standalone thermal watchdog triggering system shutdown if cabinet exceeds safe operating limit. Use Value: −40°C to +125°C range and 3 µA shutdown current support unattended operation across wide environmental conditions. | Use Scenario: Monitoring DC-DC converter temperature in 1U network switches to prevent thermal derating of PoE ports. IC Role / Device Role / Timing Role: Secondary thermal sensor feeding data to switch ASIC for intelligent power budgeting. Use Value: Open-drain ALERT output directly interfaces with ASIC's interrupt pin, eliminating need for external logic or voltage translation. |
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 | 9-bit resolution (0.5°C step), no ALERT latch/reset, fixed I²C address (1001000b), no AS pin | Lacks programmable THIGH/TLOW and ALERT polarity control; suitable only for basic overtemp warning | Select when cost sensitivity outweighs precision and configurability needs in non-critical thermal monitoring |
| MAX31820MUA+ | 12-bit resolution (0.0625°C), 1-Wire interface, ±0.5°C accuracy, no SMBus alert function | Requires single-wire bus infrastructure; lacks native I²C/SMBus compatibility and ALERT interrupt signaling | Choose for distributed sensor networks where wiring count reduction justifies interface redesign and higher BOM cost |
Compared with LM75BIMM/NOPB and MAX31820MUA+, the AD7414ARM-0 uniquely combines ±0.5°C accuracy, I²C address flexibility via AS pin, SMBus-alert-ready ALERT output, and 10-bit resolution-making it optimal for space-constrained, multi-sensor SMBus systems requiring precise, interrupt-driven thermal management.
Availability
AD7414ARM-0 is available at Aetrix Electronics and suitable for hard disk drives, PC motherboards, and industrial PLCs requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for AD7414ARM-0 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.
The AD7414ARM-0 belongs to Analog Devices' precision temperature sensor product line, engineered for embedded thermal monitoring where accuracy, low power, and SMBus compatibility are critical in space-constrained systems.
FAQ
What is the maximum operating temperature range supported by the AD7414ARM-0?
The AD7414ARM-0 supports an operating temperature range of −40°C to +125°C, validated across the A-grade specification. This range is defined by absolute maximum ratings and confirmed in production testing, making AD7414ARM-0 suitable for under-hood automotive modules and industrial control cabinets where ambient extremes occur.
Does the AD7414ARM-0 require external calibration to achieve ±0.5°C accuracy?
No, the AD7414ARM-0 achieves ±0.5°C typical accuracy at +40°C without external calibration. Its on-chip bandgap sensor and trimmed ADC architecture are factory calibrated; the AD7414ARM-0 datasheet specifies this accuracy as a production-tested parameter under defined supply and temperature conditions.
How does the ALERT output of the AD7414ARM-0 behave when the temperature exceeds THIGH?
When temperature exceeds the programmed THIGH value, the AD7414ARM-0 activates its open-drain ALERT output per configuration register settings (active-high or active-low). The ALERT remains asserted until either the temperature falls below TLOW or the ALERT reset bit (D3) in the configuration register is written to 1 - a behavior confirmed in the functional description section of the AD7414ARM-0 datasheet.
Can the AD7414ARM-0 operate on a 5 V I²C bus with 3.3 V logic levels?
Yes, the AD7414ARM-0 supports VDD from 2.7 V to 5.5 V and has VIH = 2.4 V min and VIL = 0.8 V max, allowing interoperability with both 3.3 V and 5 V I²C masters. Its SDA and SCL inputs are tolerant across the full supply range, and the open-drain outputs interface correctly with pull-ups tied to the master's logic rail - a capability explicitly verified in AD7414ARM-0 AC electrical characteristics.
What is the purpose of the AS pin on the AD7414ARM-0, and how is it used?
The AS pin on the AD7414ARM-0 selects one of three I²C addresses (1001000b, 1001001b, or 1001010b) by connecting it to VDD, GND, or leaving it floating. This hardware-based addressing eliminates software address conflicts in multi-sensor SMBus configurations and is documented in Table 4 of the AD7414ARM-0 datasheet for the -0 version.
AD7414ARM-0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-0 FAQ
1.How can I place an order for AD7414ARM-0 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7414ARM-0 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-0 reliable?
The price and inventory of AD7414ARM-0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7414ARM-0 is usually 5 days.
3.What payment methods are accepted for AD7414ARM-0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7414ARM-0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7414ARM-0?
AD7414ARM-0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7414ARM-0 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-0?
For technical support, including AD7414ARM-0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7414ARM-0 requirements.
6.How does Aetrix verify that AD7414ARM-0 is sourced from the original manufacturer or authorized distributors?
All AD7414ARM-0 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-0 meets industry standards.
7.What is the process for return or replacement of AD7414ARM-0?
All AD7414ARM-0 units undergo pre-shipment inspection (PSI). If there is an issue with AD7414ARM-0, 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-0 part is unused and in its original packaging.
Return procedure for AD7414ARM-0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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