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Analog Devices Inc. ADT7411ARQZ-REEL
- Part No.:
- ADT7411ARQZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog and Digital Output
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADT7411ARQZ-REEL.pdf
- Description:
- SENSOR DIGITAL -40C-120C 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,228
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Product details
Overview
ADT7411ARQZ-REEL from Analog Devices is a SPI-/I²C-compatible 10-bit digital temperature sensor and 8-channel ADC in a 16-lead QSOP package. It integrates an internal band gap temperature sensor (±0.5°C accuracy over 0°C–85°C), eight single-ended analog inputs (0 V to 2.25 V or 0 V to VDD), and dual serial interfaces. It operates from 2.7 V to 5.5 V and supports round-robin monitoring of VDD, internal/external temperature, and all eight AIN channels - used in smart battery chargers and PC thermal management.
For engineers reviewing the ADT7411ARQZ-REEL datasheet, ADT7411ARQZ-REEL pinout, ADT7411ARQZ-REEL application, or ADT7411ARQZ-REEL equivalent, key selection considerations include its dual-interface flexibility (I²C/SPI), on-chip 2.25 V reference, ±0.5°C internal temperature accuracy, 10-bit ADC resolution, and low-power shutdown mode (<10 µA).
Technical Context
The ADT7411ARQZ-REEL implements a dual-mode ADC architecture supporting both slow (11.4 ms internal temp conversion) and fast (134 µs internal temp conversion) modes via Control Configuration 3 register bit C0. Its analog input multiplexer routes AIN1–AIN8, with D+/AIN1 and D−/AIN2 configurable for external diode-based temperature sensing using a 2N3906 transistor.
It features double-buffered input logic, SMBus packet error checking (PEC) compatibility, and programmable interrupt polarity on the open-drain INT/INT pin. The device defaults to I²C at power-up but supports persistent SPI lock-in via serial interface selection protocol - requiring power cycle to revert.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit ADC and temperature sensor - delivers 0.25°C thermal resolution and 0.0022 V LSB for 2.25 V full-scale range. |
| Temperature Accuracy | ±0.5°C (0°C to +85°C, VDD = 3.3 V ±10%) - enables precise thermal throttling in PCs and embedded systems. |
| Supply Range | 2.7 V to 5.5 V - supports direct integration into 3.3 V and 5 V systems without level-shifting. |
| Power-Down Current | <10 µA - extends battery life in portable instruments and smart chargers during idle periods. |
| Input Channels | 8 single-ended analog inputs (AIN1–AIN8) plus internal/external temperature and VDD monitoring - allows consolidated system health monitoring. |
| Interface Standards | I²C (fast-mode, 400 kHz), SPI/QSPI/MICROWIRE/DSP - provides drop-in compatibility across microcontroller platforms. |
| Reference Options | Internal 2.25 VREF or VDD - eliminates need for external reference while maintaining linearity up to 5 V supply. |
Pinout & Package
ADT7411ARQZ-REEL uses a 16-lead QSOP (Quarter-Size Outline Package) with 0.65 mm lead pitch and exposed pad for thermal performance. Pin 3 is NC; pins 7 and 8 serve dual roles as D+/AIN1 and D−/AIN2 for external diode temperature sensing or analog input.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AIN6) | Analog Input | Single-ended channel with 0 V–2.25 V or 0 V–VDD range; no internal protection diodes - requires external clamping if overvoltage risk exists. |
| 4 (CS) | SPI Frame Sync | Active-low chip select; must be tied high to VDD when using I²C to prevent bus contention. |
| 10 (INT/INT) | Interrupt Output | Open-drain output with programmable active-high/low polarity; asserts on VDD, temperature, or AIN limit violations. |
| 11 (DOUT/ADD) | Data Out / I²C Address | In SPI mode: serial data output (falling-edge clocked); in I²C mode: address selection pin (low/float/high sets 7-bit address). |
| 12 (SDA/DIN) | I²C Data / SPI Data In | Shared bidirectional I²C SDA or unidirectional SPI DIN; open-drain configuration requires external pull-up resistor. |
| 13 (SCL/SCLK) | I²C Clock / SPI Clock | Shared clock input for both interfaces; rising edge clocks data in SPI, falling edge clocks data out. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Serial Interface | I²C and SPI selectable at power-up; SPI lock-in prevents accidental reversion - simplifies firmware integration across mixed-bus systems. |
| Round-Robin Monitoring | Automatically cycles through VDD, internal/external temperature, and all 8 AIN channels - enables autonomous system-level health checks without host CPU polling. |
| Configurable Reference | Internal 2.25 VREF or VDD selection via Control Config 3 (C4 bit) - maintains ADC accuracy across supply variations without external components. |
| Programmable Averaging | 16-sample averaging per channel (enabled by default) reduces noise-induced errors - improves effective resolution in noisy industrial environments. |
| External Diode Support | D+/AIN1 and D−/AIN2 pins support 2N3906-based remote temperature sensing - extends thermal monitoring beyond the IC die to critical PCB hotspots. |
Applications
| PC Thermal Management | Smart Battery Charger |
|---|---|
Use Scenario: Real-time monitoring of CPU/GPU die temperature, VRM voltage, and heatsink ambient in desktop/laptop motherboards. IC Role / Device Role / Timing Role: Primary thermal sensor and auxiliary ADC for VDD and fan control feedback - provides synchronized 10-bit digitized readings every 12.11 ms (averaging off, D+/D− selected). Use Value: Enables dynamic thermal throttling and fan speed control with ±0.5°C accuracy, reducing system thermal runaway risk. | Use Scenario: Monitoring cell voltage, battery temperature (via external diode), and charging current in multi-cell Li-ion chargers. IC Role / Device Role / Timing Role: Integrated temperature + voltage monitor replacing discrete sensors and ADC - measures internal temp, external diode temp (D+/D−), and up to 6 cell voltages (AIN3–AIN8) in round-robin mode. Use Value: Eliminates BOM cost of separate temp sensor and 8-bit ADC while meeting JEITA charge-safety thresholds (±2°C max error). |
| Telecom Power Shelf | Industrial Process Controller |
Use Scenario: Monitoring rectifier module temperature, 48 V bus voltage, and cooling fan tachometer signals in telecom power distribution units. IC Role / Device Role / Timing Role: System health monitor interfacing to ARM-based controller via I²C - reports VDD, internal temp, and 6 analog inputs (AIN3–AIN8) with SMBus PEC for data integrity. Use Value: Provides fault detection (overtemp, undervoltage) with <10 µA shutdown current during standby - meets NEBS Level 3 power efficiency requirements. | Use Scenario: Measuring ambient temperature, motor winding resistance (via voltage drop), and supply rail stability in PLC I/O modules. IC Role / Device Role / Timing Role: Consolidated analog front-end for thermal and power supervision - uses AIN1/AIN2 for PT100 bridge excitation and AIN3–AIN8 for auxiliary sensor inputs. Use Value: Reduces component count vs. discrete op-amp + ADC solution while supporting DC-coupled inputs up to 5.5 V - simplifies CE-compliant EMC design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature-and-ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADT7420ARMZ-REEL7 | 16-bit temperature sensor only (no ADC channels); ±0.25°C accuracy; I²C-only interface; 8-lead MSOP. | Targeted at high-precision thermal-only monitoring; lacks multichannel analog sensing capability. | Select when absolute temperature accuracy > resolution and channel count are secondary to cost and footprint. |
| MAX127BCPP+ | 8-channel, 12-bit ADC only (no integrated temperature sensor); SPI-only; ±1 LSB INL; 28-pin PDIP. | Designed for general-purpose data acquisition; requires external temp sensor and level-shifting for 5 V operation. | Select when higher ADC resolution and sampling rate are required, and thermal sensing is handled separately. |
Compared with ADT7411ARQZ-REEL, ADT7420ARMZ-REEL7 offers superior thermal accuracy but omits analog input channels and SPI support, while MAX127BCPP+ provides higher ADC resolution but adds board space, external components, and no on-die temperature sensing - making ADT7411ARQZ-REEL optimal for compact, integrated thermal + analog monitoring.
Availability
ADT7411ARQZ-REEL is available at Aetrix Electronics and suitable for PC thermal management, smart battery chargers, and telecom power shelf applications requiring stable component supply and long-term production continuity.
Supply support for ADT7411ARQZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADT7411 belongs to Analog Devices' precision temperature and data acquisition product line, designed specifically for embedded systems requiring simultaneous thermal monitoring and multichannel analog sensing in space-constrained, low-power environments.
FAQ
What communication protocols does the ADT7411ARQZ-REEL support?
The ADT7411ARQZ-REEL supports both I²C (fast-mode, 400 kHz) and SPI (QSPI/MICROWIRE/DSP compatible) protocols. It powers up in I²C mode by default; SPI mode is enabled and locked via a defined serial interface selection sequence. Reverting to I²C requires a power cycle - ensuring interface stability during runtime.
How accurate is the internal temperature measurement of the ADT7411ARQZ-REEL?
The ADT7411ARQZ-REEL achieves ±0.5°C internal temperature accuracy over 0°C to +85°C at VDD = 3.3 V ±10%, and ±2°C over the full −40°C to +120°C operating range. This is specified with internal reference and averaging enabled - critical for reliable thermal management in PCs and industrial controllers.
Can the ADT7411ARQZ-REEL measure external temperature using a transistor?
Yes - the ADT7411ARQZ-REEL supports external temperature sensing using a PNP transistor (e.g., 2N3906) connected to pins 7 (D+/AIN1) and 8 (D−/AIN2). Accuracy is ±3°C over 0°C to +85°C at 3.3 V supply. Configuration is controlled by bits C1/C2 in the Control Configuration 1 register to select diode mode over AIN1/AIN2.
What is the function of the ADD pin (Pin 11) on the ADT7411ARQZ-REEL?
Pin 11 (DOUT/ADD) serves dual functions: in SPI mode, it is the serial data output (DOUT); in I²C mode, it becomes the ADD pin that sets the device's 7-bit I²C address (1001000b, 1001010b, or 1001011b) based on logic level. The address is latched after two valid communications - preventing mid-operation address changes.
Does the ADT7411ARQZ-REEL include an internal voltage reference?
Yes - the ADT7411ARQZ-REEL includes a trimmed internal 2.25 V reference (2.2662 V to 2.2938 V, 80 ppm/°C drift) usable for ADC conversions. It can be selected instead of VDD as the ADC reference via bit C4 in Control Configuration 3 (Address 1Ah), improving measurement stability across supply variations.
ADT7411ARQZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local/Remote
- Sensing Temperature - Local:
- -40°C ~ 120°C
- Sensing Temperature - Remote:
- -40°C ~ 120°C
- Output Type:
- I2C, SPI
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 10 b
- Features:
- Output Switch, Programmable Limit, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±3°C (±5°C)
- Test Condition:
- 0°C ~ 85°C (-40°C ~ 120°C)
- Operating Temperature:
- -40°C ~ 120°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-QSOP
ADT7411ARQZ-REEL FAQ
1.How can I place an order for ADT7411ARQZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADT7411ARQZ-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 ADT7411ARQZ-REEL reliable?
The price and inventory of ADT7411ARQZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADT7411ARQZ-REEL is usually 5 days.
3.What payment methods are accepted for ADT7411ARQZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADT7411ARQZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADT7411ARQZ-REEL?
ADT7411ARQZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADT7411ARQZ-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 ADT7411ARQZ-REEL?
For technical support, including ADT7411ARQZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADT7411ARQZ-REEL requirements.
6.How does Aetrix verify that ADT7411ARQZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADT7411ARQZ-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 ADT7411ARQZ-REEL meets industry standards.
7.What is the process for return or replacement of ADT7411ARQZ-REEL?
All ADT7411ARQZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADT7411ARQZ-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 ADT7411ARQZ-REEL part is unused and in its original packaging.
Return procedure for ADT7411ARQZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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