My Inquiry
My Account
Analog Devices Inc. AD7416AR
- Part No.:
- AD7416AR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7416AR.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,584
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7416AR from Analog Devices is a dedicated 10-bit digital temperature sensor IC with I²C interface, on-chip bandgap temperature sensing element, ±2°C accuracy over −40°C to +125°C range, 40 μs conversion time, and open-drain overtemperature indicator (OTI) output. It operates from 2.7 V to 5.5 V and serves as a system-level thermal monitor in space-constrained embedded control applications.
For engineers reviewing the AD7416AR datasheet, AD7416AR pinout, AD7416AR application, or AD7416AR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-ready availability details - all specific to the AD7416AR variant in SOIC-8 package.
Technical Context
The AD7416AR implements a successive approximation ADC architecture exclusively for Channel 0 (integrated temperature sensor), with no external analog input pins. Its internal 2.5 V reference enables direct digitization of die temperature without external components, and its I²C-compatible serial interface uses A0/A1/A2 address bits to support up to eight devices on one bus.
Conversion is triggered automatically on I²C read/write or via software register access; no CONVST pin is present. The OTI output is open-drain, programmable for comparator/interrupt mode, and debounced using a fault queue counter to prevent false triggers in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Range | −40°C to +125°C operating range; usable for industrial and automotive ambient monitoring. |
| Accuracy | ±2.0°C at −25°C to +100°C; ±3.0°C across full range - sufficient for fan control and thermal shutdown thresholds. |
| Resolution | 10-bit (1024 codes); 0.25°C/LSB resolution enables fine-grained thermal profiling. |
| Conversion Time | 40 μs per temperature reading - supports >20 kSPS update rate for responsive thermal management. |
| Supply Voltage | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level-shifting. |
| Quiescent Current | 350–600 μA during I²C idle; 0.2–1.5 μA in shutdown - enables battery-backed thermal logging. |
| I²C Address Bits | A0, A1, A2 pins allow hardware-selectable address (0x48–0x4F) - simplifies multi-sensor bus topology. |
Pinout & Package
AD7416AR is housed in an 8-lead SOIC package (body width 3.9 mm, JEDEC MS-012), RoHS-compliant and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SDA | I²C bidirectional data line | Push-pull output; requires external pull-up; handles register reads/writes and auto-conversion triggers. |
| 2: SCL | I²C clock input | Controls timing of all serial transactions; supports standard (100 kHz) and fast-mode (400 kHz) I²C. |
| 3: OTI | Open-drain overtemperature indicator | Asserts low when temperature exceeds TOTI register value; reset after I²C read; supports wired-OR alarm bus. |
| 4: GND | Analog/digital ground reference | Single ground plane required; connects to track-and-hold, comparator, DAC, and digital logic sections. |
| 5: A2 | I²C address MSB input | Hardwired high/low to set device address; enables up to 8 AD7416AR units on shared I²C bus. |
| 6: A1 | I²C address middle bit input | Part of 3-bit hardware address (A2/A1/A0); eliminates need for software-configured addresses. |
| 7: A0 | I²C address LSB input | Completes 3-bit address selection; allows deterministic addressing without EEPROM or firmware setup. |
| 8: VDD | Positive supply input | Accepts 2.7–5.5 V; powers internal reference, ADC, oscillator, and I²C interface; decoupling capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip temperature sensor | Bandgap-based sensing element calibrated to ±2°C accuracy at 25°C; no external thermistor or RTD needed. |
| Programmable OTI output | Configurable as comparator or interrupt; fault queue prevents spurious alarms in electrically noisy systems. |
| Auto power-down | Enters ultra-low-power state (<1.5 μA) after each conversion - extends battery life in portable thermal monitors. |
| I²C address flexibility | Three hardware address pins (A0/A1/A2) support 8 unique addresses on one bus - ideal for multi-zone monitoring. |
| Internal 2.5 V reference | Stable on-chip reference eliminates need for external precision voltage source; shuts down if REFIN is used (not applicable to AD7416AR). |
Applications
| Server Rack Thermal Monitoring | Fan Speed Control System |
|---|---|
|
Use Scenario: Real-time ambient temperature tracking across CPU, memory, and power supply zones in 1U/2U servers. IC Role / Device Role / Timing Role: Dedicated temperature sensor feeding thermal management firmware; provides 40 μs updates to enable dynamic fan PWM adjustment. Use Value: Enables precise thermal throttling without adding external ADC or signal conditioning; reduces BOM count by eliminating discrete sensing chains. |
Use Scenario: Closed-loop fan control based on heatsink or enclosure temperature in industrial PCs and network appliances. IC Role / Device Role / Timing Role: Primary thermal feedback element; OTI output directly drives fan enable/disable logic or interrupts MCU for PID calculation. Use Value: Fault-queue-debounced OTI prevents erratic fan cycling during transient thermal noise; 0.25°C resolution supports smooth RPM ramping. |
| Automotive Cabin Climate Controller | Battery Pack Temperature Supervisor |
|
Use Scenario: Cabin air temperature sensing for HVAC microcontroller in passenger vehicles. IC Role / Device Role / Timing Role: Ambient temperature acquisition node; communicates via I²C to main controller; operates across −40°C to +125°C under hood conditions. Use Value: Qualified for automotive ambient use; eliminates calibration drift vs. NTC thermistors; single-supply 3.3 V operation matches infotainment SoC IO domain. |
Use Scenario: Cell-level or module-level temperature supervision in Li-ion battery packs for UPS and energy storage. IC Role / Device Role / Timing Role: Safety-critical thermal watchdog; OTI output latches or triggers disconnect circuitry upon exceeding TOTI threshold. Use Value: ±2°C accuracy ensures reliable overtemperature detection before cell thermal runaway; low quiescent current minimizes pack self-discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature-monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM-3/NOPB | 9-bit resolution; ±2°C accuracy; no programmable fault queue; fixed I²C address (0x48 only). | Lacks OTI debounce logic and flexible addressing - less robust in EMI-heavy environments with multiple sensors. | Choose LM75B for cost-sensitive, single-sensor designs where 0.25°C resolution and fault queue are unnecessary. |
| MAX31820 | 1-Wire interface; ±0.5°C accuracy; parasitic power capable; no OTI output; requires external pull-up only. | Eliminates I²C bus contention but adds wire-count overhead; lacks hardware alarm output for immediate response. | Prefer MAX31820 for distributed, long-cable thermal networks where wiring simplicity outweighs need for fast OTI assertion. |
Compared with LM75BIMM-3/NOPB and MAX31820, the AD7416AR delivers higher resolution (10-bit vs. 9-bit), configurable OTI behavior, and scalable multi-device addressing - making it optimal for compact, noise-immune, I²C-based thermal safety systems requiring deterministic response.
Availability
AD7416AR is available at Aetrix Electronics and suitable for server thermal management, automotive cabin climate control, and battery pack supervision requiring stable component supply, long-term lifecycle support, and industrial-grade temperature performance.
Supply support for AD7416AR 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7416AR belongs to Analog Devices' precision temperature sensor product line, designed specifically for embedded thermal monitoring where accuracy, integration, and I²C compatibility are critical.
FAQ
What is the maximum operating temperature range for the AD7416AR?
The AD7416AR is specified for continuous operation from −40°C to +125°C. This full-range rating applies to the A-version device, which includes the AD7416AR. At temperatures beyond 100°C, accuracy degrades to ±3.0°C, while ±2.0°C is maintained between −25°C and +100°C - enabling reliable use in under-hood automotive and industrial control environments.
Does the AD7416AR require an external reference voltage?
No, the AD7416AR does not require an external reference voltage. It integrates a factory-trimmed 2.5 V bandgap reference that powers the ADC and temperature sensor circuitry. Unlike the AD7417/AD7418, the AD7416AR has no REFIN pin - confirming its role as a temperature-only sensor with fully self-contained signal chain.
How is the overtemperature indicator (OTI) output configured on the AD7416AR?
The OTI output on the AD7416AR is an open-drain logic signal controlled by two on-chip registers: TOTI (overtemperature trip) and THYST (hysteresis). Its active state (low) can be programmed as comparator or interrupt mode via the configuration register, and its assertion is gated by a fault queue counter to suppress noise-induced false triggers - all configurable over I²C without external components.
Can multiple AD7416AR devices share the same I²C bus?
Yes, up to eight AD7416AR devices can operate on a single I²C bus. Each unit uses three hardware address pins (A0, A1, A2) to select one of eight possible 7-bit addresses (0x48–0x4F). This eliminates address conflicts and avoids software-based address management - simplifying multi-zone thermal monitoring in dense PCB layouts.
What is the typical power consumption of the AD7416AR during active temperature measurement?
During active I²C communication and periodic temperature conversions, the AD7416AR draws 350–600 μA from a 3.3 V supply. In automatic power-down mode - engaged after each 40 μs conversion - quiescent current drops to 0.2–1.5 μA. This dual-state power profile supports both high-throughput thermal logging and ultra-low-power battery-backed monitoring.
AD7416AR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 10 b
- Features:
- Output Switch, Programmable Limit, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 100°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
AD7416AR FAQ
1.How can I place an order for AD7416AR through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7416AR 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 AD7416AR reliable?
The price and inventory of AD7416AR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7416AR is usually 5 days.
3.What payment methods are accepted for AD7416AR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7416AR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7416AR?
AD7416AR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7416AR 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 AD7416AR?
For technical support, including AD7416AR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7416AR requirements.
6.How does Aetrix verify that AD7416AR is sourced from the original manufacturer or authorized distributors?
All AD7416AR 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 AD7416AR meets industry standards.
7.What is the process for return or replacement of AD7416AR?
All AD7416AR units undergo pre-shipment inspection (PSI). If there is an issue with AD7416AR, 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 AD7416AR part is unused and in its original packaging.
Return procedure for AD7416AR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7416AR Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
