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Analog Devices Inc. AD7414ARM-0REEL7
- Part No.:
- AD7414ARM-0REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7414ARM-0REEL7.pdf
- Description:
- IC SENSOR TEMP 10BIT DGTL 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,075
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Product details
Overview
AD7414ARM-0REEL7 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 motherboard VRMs, hard disk drive controllers, and embedded industrial control modules.
For engineers reviewing the AD7414ARM-0REEL7 datasheet, AD7414ARM-0REEL7 pinout, AD7414ARM-0REEL7 application, or AD7414ARM-0REEL7 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, 2.7 V to 5.5 V supply range, and pin-selectable I²C address via AS input - all critical for space-constrained, low-power thermal management designs.
Technical Context
The AD7414ARM-0REEL7 implements a bandgap-based temperature sensor paired with a 10-bit successive-approximation ADC, delivering twos-complement temperature data at 0.25°C resolution. Its internal oscillator enables automatic 800 ms update rate or on-demand one-shot conversion triggered via configuration register bit D2.
It supports full SMBus v1.1 and I²C standard-mode (100 kHz) and fast-mode (400 kHz) protocols, with configurable SDA/SCL input filters for EMC robustness. The ALERT output functions as either an interrupt or SMBus alert, activated when temperature exceeds THIGH (8-bit register, 1°C resolution), and deactivates when below TLOW - both registers accessible via I²C address 0x02 and 0x03.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5°C typ at +40°C; ±2.0°C max over −40°C to +125°C - ensures reliable thermal trip points without system-level calibration. |
| Resolution | 10-bit (0.25°C LSB) - enables fine-grained thermal profiling for fan speed control and power throttling algorithms. |
| 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 typ - allows rapid response to thermal transients in real-time protection circuits. |
| Shutdown Current | 3 µA max - extends battery life in portable equipment during idle periods. |
| I²C Address Options | Three addresses per version (float/GND/VDD on AS pin); AD7414-0 supports 1001000/1001001/1001010 - enables up to 3 sensors on same bus without address conflict. |
| Operating Temp | −40°C to +125°C - qualified for automotive under-hood and industrial motor drive environments. |
Pinout & Package
AD7414ARM-0REEL7 uses a 6-lead SOT-23 (RJ-6) package with 1.9 mm × 2.8 mm footprint and 0.95 mm height, optimized for automated PCB assembly and thermal performance (θJA = 190.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AS | Address Select Input | Logic input that selects one of three I²C addresses (float/GND/VDD); requires 1 kΩ pull-up/down resistor for stable operation. |
| GND | Analog & Digital Ground | Common reference for sensor core and digital interface; must be connected to low-impedance system ground plane. |
| VDD | Positive Supply | 2.7 V–5.5 V power input; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin. |
| SDA | Bidirectional Data Line | Open-drain I²C/SMBus data line; requires external pull-up (typically 4.7 kΩ to VDD) for bus communication. |
| ALERT | Overtemperature Indicator | Open-drain output active when temperature > THIGH; polarity configurable via D4 bit in config register (0 = active low, 1 = active high). |
| SCL | Serial Clock Input | Input-only I²C/SMBus clock line; accepts 100 kHz or 400 kHz signals; internal filtering enabled by default. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip bandgap temperature sensor | Delivers ±0.5°C accuracy at +40°C without external calibration components or compensation circuitry. |
| Programmable ALERT threshold | THIGH and TLOW registers (I²C addresses 0x02/0x03) allow user-defined thermal trip points with 1°C resolution for custom thermal management policies. |
| One-shot conversion mode | Enables on-demand temperature reads via D2 bit in config register - ideal for event-triggered monitoring without continuous polling overhead. |
| Full power-down mode | D7 bit in config register reduces supply current to ≤3 µA while retaining I²C address and register state - suitable for battery-backed systems. |
| SMBus alert compatibility | ALERT output meets SMBus v1.1 alert response protocol, enabling direct integration with host controllers supporting SMBALERT functionality. |
Applications
| PC Motherboard Thermal Monitoring | Hard Disk Drive Controller |
|---|---|
Use Scenario: Real-time CPU voltage regulator (VRM) and chipset temperature tracking to prevent thermal throttling or shutdown. IC Role / Device Role / Timing Role: Primary ambient temperature sensor feeding thermal management firmware; ALERT asserts when VRM exceeds 95°C. Use Value: Enables precise 0.25°C-resolution feedback for dynamic fan speed control and early overtemperature warning before silicon damage occurs. | Use Scenario: Monitoring spindle motor and controller IC junction temperature in 2.5" enterprise HDDs. IC Role / Device Role / Timing Role: Standalone thermal watchdog interfacing directly to microcontroller via I²C; ALERT triggers emergency spin-down if >70°C sustained. Use Value: Prevents data corruption and mechanical failure by enforcing strict thermal limits with <25 µs detection latency and no external components. |
| Industrial PLC I/O Module | Network Switch Power Supply |
Use Scenario: Ambient temperature sensing inside DIN-rail mounted programmable logic controller enclosures operating from −25°C to +70°C. IC Role / Device Role / Timing Role: Local thermal monitor for FPGA and power MOSFETs; configured for automatic 800 ms updates and ALERT-driven interrupt to ARM Cortex-M4 host. Use Value: Maintains system reliability across wide industrial temperature range using factory-trimmed ±0.5°C accuracy - eliminates need for field recalibration. | Use Scenario: Monitoring DC-DC converter output stage temperature in 1U rack-mounted Ethernet switches. IC Role / Device Role / Timing Role: Secondary thermal sensor co-located with hot-swap controller; ALERT tied to fault pin of PMBus-compliant power controller. Use Value: Provides fail-safe thermal protection independent of main system MCU, ensuring graceful power-down even during firmware lockup. |
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), ±2°C accuracy over −25°C to +100°C, no ALERT polarity control, fixed I²C address (1001100b) | Lacks programmable THIGH/TLOW registers and one-shot mode; limited to basic thermal alerting without hysteresis control. | Select when cost sensitivity outweighs precision requirements and system design tolerates wider accuracy tolerance. |
| MAX31820MUA+ | 12-bit resolution (0.0625°C), ±0.5°C accuracy, 1-Wire interface (not I²C), 3.0 V–5.5 V supply, no ALERT output | Requires single-wire bus architecture; lacks dedicated overtemperature interrupt - relies on host polling for thermal events. | Choose for systems already using 1-Wire infrastructure or where higher resolution justifies interface redesign and absence of hardware alert signal. |
Compared with LM75BIMM/NOPB and MAX31820MUA+, the AD7414ARM-0REEL7 uniquely combines ±0.5°C accuracy, 10-bit resolution, programmable ALERT thresholds, and I²C address flexibility - making it optimal for compact, multi-sensor thermal management systems requiring deterministic interrupt-driven response.
Availability
AD7414ARM-0REEL7 is available at Aetrix Electronics and suitable for PC motherboard thermal monitoring, hard disk drive controller protection, and industrial PLC I/O module designs requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for AD7414ARM-0REEL7 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.
The AD7414 series belongs to Analog Devices' precision temperature sensor product line, designed specifically for embedded thermal monitoring applications demanding high accuracy, low power, and I²C/SMBus interoperability in space-constrained environments.
FAQ
What is the maximum operating temperature range supported by the AD7414ARM-0REEL7?
The AD7414ARM-0REEL7 supports an operating temperature range of −40°C to +125°C, qualified per the A-grade specification. This range is validated across the full supply voltage range (2.7 V to 5.5 V) and enables use in automotive under-hood modules, industrial motor drives, and high-density computing systems where ambient temperatures exceed 85°C.
Does the AD7414ARM-0REEL7 require external components for basic operation?
No, the AD7414ARM-0REEL7 operates autonomously with only a 0.1 µF ceramic decoupling capacitor on VDD and external pull-up resistors (typically 4.7 kΩ) on SDA and SCL lines. The AS pin requires a 1 kΩ pull-up or pull-down resistor for stable I²C address selection; no external sensor, op-amps, or calibration circuitry is needed.
How does the ALERT output function in the AD7414ARM-0REEL7?
The ALERT output in the AD7414ARM-0REEL7 is an open-drain signal that activates when the measured temperature exceeds the value stored in the THIGH register (I²C address 0x02). Its polarity (active-high or active-low) is controlled by bit D4 in the configuration register, and it can serve as either a hardware interrupt or SMBus alert - both modes supported without additional components.
Can the AD7414ARM-0REEL7 perform temperature conversions while in shutdown mode?
Yes, the AD7414ARM-0REEL7 supports one-shot conversion during shutdown: writing '1' to bit D2 (ONE SHOT) in the configuration register wakes the device, performs a single 25 µs conversion, loads the result into the temperature register, and returns to shutdown - consuming ≤3 µA between operations, ideal for battery-powered thermal sampling.
What I²C address does the AD7414ARM-0REEL7 use by default?
The AD7414ARM-0REEL7 is the AD7414-0 variant and defaults to I²C address 1001000b (0x48) when the AS pin is left floating. Pulling AS to GND selects 1001001b (0x49), and pulling AS to VDD selects 1001010b (0x4A) - enabling three unique addresses on a shared bus without address jumpers or configuration EEPROM.
AD7414ARM-0REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Cut Tape (CT)
- 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-0REEL7 FAQ
1.How can I place an order for AD7414ARM-0REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7414ARM-0REEL7 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-0REEL7 reliable?
The price and inventory of AD7414ARM-0REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7414ARM-0REEL7 is usually 5 days.
3.What payment methods are accepted for AD7414ARM-0REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7414ARM-0REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7414ARM-0REEL7?
AD7414ARM-0REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7414ARM-0REEL7 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-0REEL7?
For technical support, including AD7414ARM-0REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7414ARM-0REEL7 requirements.
6.How does Aetrix verify that AD7414ARM-0REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7414ARM-0REEL7 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-0REEL7 meets industry standards.
7.What is the process for return or replacement of AD7414ARM-0REEL7?
All AD7414ARM-0REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7414ARM-0REEL7, 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-0REEL7 part is unused and in its original packaging.
Return procedure for AD7414ARM-0REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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