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Analog Devices Inc. ADT75ARM-REEL
- Part No.:
- ADT75ARM-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADT75ARM-REEL.pdf
- Description:
- 12-BIT DIGITAL TEMP. SENSOR
- Quantity:
- Payment:
- Shipping:
Inventory:77,836
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Product details
Overview
ADT75ARM-REEL from Analog Devices is a ±1°C accurate, 12-bit digital temperature sensor in an 8-pin MSOP package, featuring SMBus/I²C interface, −55°C to +125°C operating range, 0.0625°C resolution, and overtemperature alert output-used for thermal monitoring in industrial process control and computer systems.
For engineers reviewing the ADT75ARM-REEL datasheet, ADT75ARM-REEL pinout, ADT75ARM-REEL application, or ADT75ARM-REEL equivalent, key selection criteria include B-grade accuracy (±1°C from 0°C to 70°C), shutdown current of 3 μA at 3.3 V, 60 ms conversion time, and support for up to eight devices on one I²C bus.
Technical Context
The ADT75ARM-REEL integrates a bandgap temperature sensor with a first-order Σ-Δ modulator ADC, delivering 12-bit output with LSB = 0.0625°C. Its internal oscillator initiates automatic conversions every 100 ms, with each conversion completing in 60 ms and analog circuitry powering down between cycles.
It supports SMBus/I²C fast-mode timing (2.5 μs clock period), features programmable OS/ALERT output in comparator or interrupt mode, and uses three address pins (A0–A2) to configure one of eight possible slave addresses-enabling multi-sensor bus topology without external arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy (B Grade) | ±1.0°C from 0°C to 70°C - guarantees thermal monitoring fidelity within consumer/industrial ambient ranges |
| Temperature Range | −55°C to +125°C - supports operation in harsh environments including automotive under-hood and industrial enclosures |
| Resolution | 0.0625°C - enables fine-grained thermal trending and closed-loop control with 12-bit twos-complement output |
| Supply Voltage | 3.0 V to 5.5 V - compatible with standard logic rails and legacy 5 V systems while supporting modern 3.3 V microcontrollers |
| Shutdown Current | 3 μA typical at 3.3 V - reduces system power budget during idle periods in battery-powered handheld applications |
| Conversion Time | 60 ms - defines minimum latency for real-time thermal response and sets update rate boundary in control loops |
| I²C Address Pins | A0, A1, A2 - allow hardware-selectable addressing for up to eight ADT75ARM-REEL sensors on a single bus |
Pinout & Package
ADT75ARM-REEL is housed in an 8-pin MSOP (RM-8) package, measuring 3.0 mm × 3.0 mm × 1.0 mm, with exposed pad for thermal performance and Pb-free RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SDA | SMBus/I²C Serial Data | Open-drain bidirectional data line requiring external pull-up; supports multi-master arbitration and packetized register access |
| 2 - SCL | SMBus/I²C Serial Clock | Open-drain clock input synchronized to master; filtered for 50 ns glitch rejection to improve noise immunity |
| 3 - OS/ALERT | Overtemperature Indicator | Programmable open-drain output active when temperature exceeds TOS or falls below THYST; configurable polarity and fault queue depth |
| 4 - GND | Analog & Digital Ground | Single reference plane for sensor biasing and digital logic; requires low-impedance PCB connection to minimize measurement error |
| 5 - A2 | I²C Address Input | Logic-level pin tied to VDD or GND to set MSB of 3-bit slave address (0x48–0x4F) |
| 6 - A1 | I²C Address Input | Logic-level pin tied to VDD or GND to set middle bit of 3-bit slave address |
| 7 - A0 | I²C Address Input | Logic-level pin tied to VDD or GND to set LSB of 3-bit slave address |
| 8 - VDD | Positive Supply | 3.0 V–5.5 V input requiring local 0.1 μF decoupling capacitor; powers both analog sensor and digital interface |
Key Features
| Feature | Design Value |
|---|---|
| 12-bit temperature-to-digital conversion | Delivers 0.0625°C resolution with guaranteed linearity across full −55°C to +125°C range without user calibration |
| SMBus/I²C-compatible interface | Supports fast-mode (400 kHz) and standard-mode (100 kHz) protocols; pin- and register-compatible with LM75 and AD7416 |
| Programmable overtemperature alert | OS/ALERT pin operates in comparator or interrupt mode with user-defined TOS and THYST thresholds stored in 16-bit registers |
| One-shot conversion mode | Enables on-demand measurement with 60 ms conversion window and automatic return to 3 μA shutdown state-ideal for duty-cycled sensing |
| Fault queue protection | Configurable 1–6 consecutive fault threshold prevents spurious OS/ALERT activation in electrically noisy industrial environments |
Applications
| Computer Thermal Monitoring | Industrial Process Control |
|---|---|
Use Scenario: Real-time CPU/GPU die temperature tracking in desktop and server motherboards to trigger dynamic frequency scaling or fan speed control. IC Role / Device Role / Timing Role: Primary ambient and board-level temperature sensor interfacing directly to BMC or host controller via I²C. Use Value: ±1°C B-grade accuracy ensures reliable thermal throttling decisions within 0–70°C operating envelope of computing hardware. | Use Scenario: Monitoring cabinet temperature in PLCs and motor drives to prevent overheating-induced component failure or safety shutdown. IC Role / Device Role / Timing Role: Standalone thermal watchdog with programmable hysteresis and fault queue, operating autonomously without MCU intervention. Use Value: −55°C to +125°C rating and 3 μA shutdown current enable deployment in unventilated enclosures with wide ambient swings. |
| Power-System Monitors | Hand-held Applications |
Use Scenario: Temperature supervision of DC-DC converter MOSFETs and inductors in telecom rectifiers and base station power supplies. IC Role / Device Role / Timing Role: Local sensor feeding thermal feedback to PMBus-compliant power controllers or discrete protection circuits. Use Value: 60 ms conversion time and SMBus compatibility allow integration into existing PMBus infrastructure without firmware changes. | Use Scenario: Battery pack and display thermal management in medical tablets and ruggedized field instruments. IC Role / Device Role / Timing Role: Low-power temperature node in sleep-wake architectures, activated only during periodic health checks. Use Value: 78.6 μW average power in shutdown mode extends battery life while maintaining rapid wake-and-measure capability. |
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-5/NOPB | 8-bit resolution (1°C step), ±2°C accuracy over 0°C–70°C, same 8-pin MSOP package and I²C interface | Lacks programmable hysteresis, fault queue, and one-shot mode; no THYST/TOS registers | Select when cost sensitivity outweighs resolution/accuracy needs and thermal control logic is simplified |
| ADT7410TRZ-REEL7 | 16-bit resolution (0.0078°C), ±0.5°C accuracy over −20°C–+105°C, same footprint but higher precision architecture | Higher quiescent current (250 μA vs. 200 μA), requires tighter layout for noise immunity due to increased sensitivity | Select when sub-degree stability and long-term drift <0.05°C are required for metrology-grade systems |
Compared with LM75BIMM-5/NOPB, ADT75ARM-REEL delivers 4× finer resolution and B-grade ±1°C accuracy at identical form factor; versus ADT7410TRZ-REEL7, it trades 4-bit resolution for lower power and simpler register mapping-making it optimal for cost-constrained, high-volume thermal monitoring where 0.0625°C granularity suffices.
Availability
ADT75ARM-REEL is available at Aetrix Electronics and suitable for industrial process control, computer thermal monitoring, and power-system monitors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for ADT75ARM-REEL 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 ADT75ARM-REEL belongs to Analog Devices' precision temperature sensor product line, engineered for embedded thermal management in space-constrained, low-power systems where accuracy, reliability, and I²C interoperability are critical.
FAQ
What is the guaranteed accuracy specification for ADT75ARM-REEL over its full operating temperature range?
The ADT75ARM-REEL is specified as B grade with ±1.0°C accuracy from 0°C to +70°C and ±2.0°C from −25°C to +100°C. Over the full −55°C to +125°C range, accuracy degrades to ±3°C under certain voltage and temperature conditions per Table 2 of the datasheet. This graded specification reflects silicon characterization across process corners and thermal gradients.
Does ADT75ARM-REEL support multiple devices on a single I²C bus, and how is addressing configured?
Yes, ADT75ARM-REEL supports up to eight devices on one I²C bus using hardware-configurable slave addresses. Pins A0, A1, and A2 each accept logic-high or logic-low to set a unique 3-bit address prefix, yielding addresses from 0x48 to 0x4F. No software configuration or external EEPROM is required-addressing is fully determined at PCB layout stage.
What is the function of the OS/ALERT pin on ADT75ARM-REEL, and how is its behavior controlled?
The OS/ALERT pin on ADT75ARM-REEL is an open-drain output that asserts when measured temperature exceeds the TOS setpoint or falls below THYST. Its mode (comparator vs. interrupt), polarity (active-high vs. active-low), and fault queue depth (1–6 consecutive faults) are all configured via bits in the 8-bit configuration register (address 0x01), enabling flexible thermal event handling without external logic.
Can ADT75ARM-REEL operate in low-power modes, and what is the typical current draw in shutdown?
Yes, ADT75ARM-REEL supports shutdown mode via Bit D0 of the configuration register, reducing supply current to 3 μA typical at 3.3 V and 5.5 μA at 5.0 V. In this state, the internal oscillator and ADC are disabled, but the I²C interface remains active-allowing register reads (including last valid temperature) and wake-up via write to exit shutdown within 1.7 ms.
Is ADT75ARM-REEL pin-compatible with other temperature sensors, and which models are explicitly referenced in the datasheet?
Yes, ADT75ARM-REEL is explicitly stated as pin- and register-compatible with the LM75 and AD7416. This compatibility enables drop-in replacement in existing designs using those parts, preserving PCB layout, firmware register maps, and I²C initialization sequences-reducing qualification time and validation effort for ADT75ARM-REEL integration.
ADT75ARM-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADT75
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -55°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 12 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 100°C (100°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
ADT75ARM-REEL FAQ
1.How can I place an order for ADT75ARM-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADT75ARM-REEL 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 ADT75ARM-REEL reliable?
The price and inventory of ADT75ARM-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADT75ARM-REEL is usually 5 days.
3.What payment methods are accepted for ADT75ARM-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADT75ARM-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADT75ARM-REEL?
ADT75ARM-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADT75ARM-REEL 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 ADT75ARM-REEL?
For technical support, including ADT75ARM-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADT75ARM-REEL requirements.
6.How does Aetrix verify that ADT75ARM-REEL is sourced from the original manufacturer or authorized distributors?
All ADT75ARM-REEL 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 ADT75ARM-REEL meets industry standards.
7.What is the process for return or replacement of ADT75ARM-REEL?
All ADT75ARM-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADT75ARM-REEL, 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 ADT75ARM-REEL part is unused and in its original packaging.
Return procedure for ADT75ARM-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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