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Analog Devices Inc. ADT7517ARQ
- Part No.:
- ADT7517ARQ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Thermal Management
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADT7517ARQ.pdf
- Description:
- IC TEMP SNSR QUAD DAC 16-QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,630
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Product details
Overview
ADT7517ARQ from Analog Devices is a 16-lead QSOP integrated temperature sensor, 4-channel 10-bit ADC, and quad 10-bit voltage-output DAC. It operates from 2.7 V to 5.5 V, delivers ±0.5°C typical temperature accuracy over −40°C to +120°C, features SPI/I²C dual-interface compatibility, and supports simultaneous DAC output update via LDAC. It is used in smart battery chargers for real-time thermal regulation and analog signal conditioning.
For engineers reviewing the ADT7517ARQ datasheet, ADT7517ARQ pinout, ADT7517ARQ application, or ADT7517ARQ equivalent, key selection criteria include its 10-bit ADC input range (0 V to 2.28 V), buffered 0 V to VREF DAC outputs, internal 2.28 V reference option, and SMBus packet error checking (PEC) support for robust system monitoring.
Technical Context
The ADT7517ARQ integrates three core functional blocks: a bandgap-based 10-bit temperature-to-digital converter (0.25°C resolution), a 10-bit 4-channel single-ended ADC with DC input bandwidth, and four monotonic 10-bit string DACs with rail-to-rail buffered outputs. All DACs share a common reference path-either internal 2.28 V or external VREF-IN (1 V to VDD).
It supports two serial protocols: a 4-wire SPI-compatible interface (CS/SCLK/SDA/DOUT) and a 2-wire I²C/SMBus interface (SCL/SDA), both featuring double-buffered registers and power-down mode (<10 μA). The LDAC pin enables hardware-synchronized DAC updates, while INT provides configurable over-limit interrupt signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature accuracy | ±0.5°C typ at 0°C to +85°C; enables precise thermal feedback without external calibration. |
| ADC resolution & channels | 10-bit, 4-channel single-ended; supports concurrent monitoring of VDD, internal temp, external transistor, and AIN3/AIN4. |
| DAC resolution | 10-bit quad voltage-output DACs; guarantees monotonicity across all codes for stable control loop references. |
| Reference options | Internal 2.28 V ±0.0138 V (80 ppm/°C TC); eliminates need for external precision reference in space-constrained designs. |
| Supply range | 2.7 V to 5.5 V; interoperable with 3.3 V and 5 V systems, including USB-powered and industrial embedded platforms. |
| Interface support | SPI, I²C, QSPI, MICROWIRE, DSP, and SMBus with PEC; simplifies integration into mixed-protocol host controllers. |
| Power-down current | <10 μA; extends battery life in portable instruments during idle or sleep cycles. |
Pinout & Package
ADT7517ARQ is housed in a 16-lead QSOP package (5.3 mm × 10.2 mm, 0.65 mm pitch) with exposed pad for thermal performance. Pin functions are validated per Analog Devices Rev. B datasheet Figure 7 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT-A to VOUT-D (Pins 1, 2, 15, 16) | Buffered DAC analog outputs | Rail-to-rail operation; each drives 0 V to VREF with 0.5 Ω DC impedance and 25 mA short-circuit capability. |
| VREF-IN (Pin 3) | DAC reference input | Buffered high-impedance (＞10 MΩ) input accepting 1 V to VDD; enables flexible scaling of DAC full-scale range. |
| CS (Pin 4) | SPI frame sync enable | Active-low chip select; must be held high in I²C mode to prevent bus contention. |
| GND (Pin 5) & VDD (Pin 6) | Common analog/digital ground & supply | Single-supply design; requires local 0.1 μF decoupling at VDD pin for noise immunity. |
| D+/AIN1 & D−/AIN2 (Pins 7, 8) | External temp sensor interface / ADC inputs | Dual-role pins: support 2N3906-based remote sensing or 0–2.28 V analog measurement with 10 MΩ input resistance. |
| LDAC/AIN3 (Pin 9) | Hardware DAC latch / ADC input | Falling-edge-triggered (20 ns min pulse); enables synchronous multi-DAC updates without software coordination. |
| INT/INT (Pin 10) | Configurable interrupt output | Open-drain, active-low by default; asserts on VDD, temperature, or AIN limit violations per register settings. |
| DOUT/ADD (Pin 11) | SPI data out / I²C address select | In SPI mode: serial data output (falling-edge clocked); in I²C mode: sets device address (1001000/010/011). |
| SDA/DIN (Pin 12) | I²C bidirectional / SPI data in | Open-drain; requires external pull-up; supports both write (DIN) and read (SDA) operations in respective modes. |
| SCL/SCLK (Pin 13) | I²C clock / SPI serial clock | Open-drain; shared timing source for both interfaces; compatible with fast-mode I²C (400 kHz) and SPI up to 10 MHz. |
| AIN4 (Pin 14) | Fourth ADC input | Single-ended, 0–2.28 V range; completes 4-channel analog monitoring alongside VDD, internal temp, and AIN1–AIN3. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous DAC update | Hardware LDAC pin or software command ensures deterministic, jitter-free synchronization of all four outputs for closed-loop control. |
| Internal 2.28 V reference | Stable, factory-trimmed reference (±0.0138 V, 80 ppm/°C) reduces BOM count and PCB area versus external reference ICs. |
| Power-on reset to 0 V | DAC outputs initialize to 0 V at power-up-prevents uncontrolled actuator movement or voltage transients in safety-critical systems. |
| DC input bandwidth ADC | Supports static and slowly varying signals (e.g., thermistor, RTD, battery voltage) without aliasing or anti-alias filtering. |
| SMBus PEC compatibility | Enables CRC-8 error detection on I²C writes, improving reliability in noisy industrial or automotive communication environments. |
| Quad buffered DAC outputs | Each output drives ≥2 mA into 1 kΩ load with 7 μs typical settling time-suitable for driving op-amp inputs or PWM comparator references. |
Applications
| Smart Battery Charging | PCB Thermal Monitoring |
|---|---|
|
Use Scenario: Real-time temperature and voltage monitoring during lithium-ion charge cycles to prevent thermal runaway and optimize charging profiles. IC Role / Device Role / Timing Role: ADT7517ARQ measures cell temperature (via internal sensor or external transistor), VDD (supply rail), and auxiliary analog inputs (e.g., current sense voltage) while generating precise DAC reference voltages for charge controller setpoints. Use Value: Enables adaptive charging algorithms with ±0.5°C thermal accuracy and 10-bit ADC resolution-reducing risk of overcharge and extending battery cycle life. |
Use Scenario: Continuous thermal mapping of high-power components (e.g., CPU, GPU, power MOSFETs) on computing or telecom boards. IC Role / Device Role / Timing Role: ADT7517ARQ digitizes temperature from multiple on-board sensors (internal + external) and analog rail voltages, then reports data via I²C to host MCU for fan speed or throttling decisions. Use Value: Single-chip integration of 4 ADC channels + temperature sensor eliminates discrete sensor + ADC combinations-saving board space and reducing calibration overhead. |
| Industrial Process Control | Domestic Appliance Sensing |
|
Use Scenario: Closed-loop control of heating elements in programmable logic controller (PLC) I/O modules or environmental chambers. IC Role / Device Role / Timing Role: ADT7517ARQ reads thermocouple amplifier outputs or RTD bridge voltages via its 4-channel ADC and generates precise 0–2 V DAC outputs to drive analog PID controller references or valve positioners. Use Value: 10-bit DAC monotonicity and <10 μA power-down current allow reliable, low-drift analog control even in unattended or energy-sensitive installations. |
Use Scenario: Temperature and power rail supervision in smart ovens, refrigerators, or washing machines with microcontroller-based user interfaces. IC Role / Device Role / Timing Role: ADT7517ARQ monitors oven cavity temperature (external sensor), internal die temperature, VDD, and motor driver supply voltage-triggering INT alerts on overtemperature or undervoltage faults. Use Value: Integrated interrupt logic and SMBus PEC reduce firmware complexity and improve fault response time-meeting IEC 60730 Class B safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature-sensing and multi-channel analog I/O applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADT7516ARQ | 12-bit DACs (vs. 10-bit), higher relative accuracy (±2 LSB vs. ±0.5 LSB), same ADC/temp specs and pinout. | Better DAC precision required for high-resolution control loops (e.g., laser diode biasing); higher cost and power. | Select ADT7516ARQ when DAC linearity and gain stability are critical; ADT7517ARQ offers optimal balance for general-purpose thermal/analog monitoring. |
| ADT7519ARQ | 8-bit DACs (vs. 10-bit), lower relative accuracy (±0.15 LSB), identical ADC, temp sensor, and interface functionality. | Suitable for coarse-setpoint applications (e.g., LED dimming, basic fan control) where DAC resolution is non-critical. | Choose ADT7519ARQ to reduce cost and simplify calibration in cost-sensitive consumer devices where 10-bit DAC is unnecessary. |
Compared with ADT7516ARQ and ADT7519ARQ, the ADT7517ARQ delivers the optimal trade-off between DAC resolution (10-bit), temperature accuracy (±0.5°C), and power efficiency (<10 μA shutdown), making it ideal for mid-tier embedded systems requiring reliable analog sensing and control without over-specification.
Availability
ADT7517ARQ is available at Aetrix Electronics and suitable for smart battery chargers, PCB thermal monitoring, industrial process control, and domestic appliance sensing requiring stable component supply and long-term lifecycle support.
Supply support for ADT7517ARQ 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 ADT7517ARQ belongs to Analog Devices' precision temperature and analog front-end product line, designed for embedded systems requiring integrated sensing, conversion, and programmable analog output in minimal footprint.
FAQ
What is the operating temperature range of the ADT7517ARQ?
The ADT7517ARQ operates from −40°C to +120°C. Its internal temperature sensor achieves ±0.5°C typical accuracy across 0°C to +85°C and ±2°C over the full range. This specification is validated under VDD = 3.3 V ±10% and applies to both internal die sensing and external transistor measurements using Pins 7 and 8.
Does the ADT7517ARQ support both SPI and I²C interfaces simultaneously?
No-the ADT7517ARQ supports SPI or I²C operation, but not concurrently. Interface selection is determined by hardware configuration: CS must be held high for I²C mode, while SDA/DIN and SCL/SCLK serve dual roles. The device does not arbitrate between protocols; users must dedicate the bus to one interface per implementation.
What is the maximum settling time for the ADT7517ARQ DAC outputs?
The ADT7517ARQ DAC outputs settle in 7 μs typical (9 μs max) for a 1/4- to 3/4-scale step change (e.g., code 0x100 to 0x300) with VREF = VDD = 5 V. Settling time remains consistent across all four DACs due to matched on-chip rail-to-rail output amplifiers and is specified under 4.7 kΩ//200 pF load conditions.
Can the ADT7517ARQ measure external temperature using a standard NPN transistor?
Yes-the ADT7517ARQ supports external temperature sensing using a 2N3906 PNP transistor connected to Pins 7 (D+) and 8 (D−). The device applies a constant current to the base-emitter junction and measures the resulting VBE delta to compute temperature. Accuracy is ±3°C over −40°C to +120°C at VDD = 3.3 V.
Is there an internal voltage reference available for the ADT7517ARQ DACs?
Yes-the ADT7517ARQ includes an internal 2.28 V reference (2.2662 V to 2.2938 V, 80 ppm/°C TC) that can be selected as the DAC reference source. When enabled, it eliminates the need for an external reference and provides stable full-scale output of 0 V to 2.28 V across all four DACs without additional components.
ADT7517ARQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Temp Monitoring System (Sensor)
- Sensor Type:
- Internal and External
- Sensing Temperature:
- -40°C ~ 120°C, External Sensor
- Accuracy:
- -
- Topology:
- ADC, Comparator, Multiplexer, Register Bank
- Output Type:
- I2C, MICROWIRE, QSPI, SPI
- Output Alarm:
- No
- Output Fan:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 120°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
ADT7517ARQ FAQ
1.How can I place an order for ADT7517ARQ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADT7517ARQ 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 ADT7517ARQ reliable?
The price and inventory of ADT7517ARQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADT7517ARQ is usually 5 days.
3.What payment methods are accepted for ADT7517ARQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADT7517ARQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADT7517ARQ?
ADT7517ARQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADT7517ARQ 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 ADT7517ARQ?
For technical support, including ADT7517ARQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADT7517ARQ requirements.
6.How does Aetrix verify that ADT7517ARQ is sourced from the original manufacturer or authorized distributors?
All ADT7517ARQ 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 ADT7517ARQ meets industry standards.
7.What is the process for return or replacement of ADT7517ARQ?
All ADT7517ARQ units undergo pre-shipment inspection (PSI). If there is an issue with ADT7517ARQ, 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 ADT7517ARQ part is unused and in its original packaging.
Return procedure for ADT7517ARQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADT7517ARQ Tags
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