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Analog Devices Inc. ADT7519ARQ
- Part No.:
- ADT7519ARQ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Thermal Management
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADT7519ARQ.pdf
- Description:
- IC SENSOR TEMP QD ADC/DAC 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,520
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Product details
Overview
ADT7519ARQ from Analog Devices is an integrated 10-bit temperature sensor, 10-bit 4-channel ADC, and quad 8-bit voltage-output DAC in a single 16-lead QSOP package. 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 updates via LDAC for closed-loop thermal or power management systems.
For engineers reviewing the ADT7519ARQ datasheet, ADT7519ARQ pinout, ADT7519ARQ application, or ADT7519ARQ equivalent, this device serves as a compact analog front-end for embedded monitoring-especially where space-constrained, battery-aware, multi-sensor systems require coordinated temperature sensing, analog input acquisition, and programmable voltage control without external op-amps or reference buffers.
Technical Context
The ADT7519ARQ integrates three independent functional blocks: a bandgap-based 10-bit temperature-to-digital converter (0.25°C resolution), a 10-bit successive-approximation ADC with four single-ended inputs (0 V to 2.28 V range, DC bandwidth), and four monotonic 8-bit string DACs with rail-to-rail buffered outputs (0 V to VREF, 7 μs typical settling). All share a common 2.28 V internal reference or accept external VREF-IN (1 V to VDD).
Its dual serial interface supports both 4-wire SPI (compatible with QSPI/MICROWIRE/DSP) and 2-wire SMBus/I²C (with PEC support), enabling flexible host integration. Power-down mode draws <10 μA, and on-chip power-on reset ensures DAC outputs initialize to 0 V-critical for fail-safe biasing in precision analog control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Accuracy | ±0.5°C typ @ 0°C to +85°C; enables direct thermal feedback without calibration in PC or appliance thermal management. |
| DAC Resolution | 8-bit (256 codes); sufficient for coarse gain/offset trimming, LED current setting, or reference voltage scaling in cost-sensitive systems. |
| ADC Channels | 4 single-ended inputs (AIN1–AIN4); supports concurrent monitoring of supply rails, sensor outputs, or system voltages without multiplexer overhead. |
| Supply Range | 2.7 V to 5.5 V; interoperable with 3.3 V and 5 V logic domains and compatible with Li-ion battery discharge profiles. |
| Interface Support | SPI and I²C dual-mode; eliminates need for protocol translation ICs and simplifies firmware reuse across microcontroller platforms. |
| Power-Down Current | <10 μA; extends battery life in portable instruments during idle periods without sacrificing wake-up responsiveness. |
| Package | 16-lead QSOP (5.3 mm × 10.2 mm); surface-mount compatible with standard reflow processes and suitable for high-density PCB layouts. |
Pinout & Package
ADT7519ARQ is housed in a 16-lead QSOP (Quarter-Size Outline Package) with 0.65 mm lead pitch, thermally optimized for low-power analog operation and qualified for industrial temperature range (−40°C to +120°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT-A / Pin 2 | DAC A buffered analog output | Rail-to-rail voltage source (0 V to VREF); drives loads up to 25 mA; used for programmable bias or reference generation. |
| VOUT-B / Pin 1 | DAC B buffered analog output | Independent 8-bit output; enables dual-voltage control (e.g., VPOS/VNEG for op-amp offset nulling). |
| VOUT-C / Pin 16 | DAC C buffered analog output | Third DAC channel; supports multi-point calibration or independent actuator control (e.g., fan speed, heater duty). |
| VOUT-D / Pin 15 | DAC D buffered analog output | Fourth DAC output; allows full 4-channel closed-loop control (e.g., thermal zone balancing in multi-core processors). |
| VREF-IN / Pin 3 | Reference input for all DACs | Buffered 1 V to VDD input; accepts internal 2.28 V reference or external precision source for improved DAC linearity. |
| AIN1 / Pin 7 | Analog input channel 1 / D+ terminal | Single-ended input (0 V to 2.28 V or 0 V to VDD); doubles as positive leg for external transistor temperature sensing. |
| AIN2 / Pin 8 | Analog input channel 2 / D− terminal | Second analog input; pairs with AIN1 for external diode/BJT temperature measurement using differential ΔVBE. |
| LDAC / Pin 9 | Load DAC active-low control | Edge-triggered (20 ns min pulse); synchronizes all four DAC outputs-essential for glitch-free step changes in control signals. |
| INT / Pin 10 | Open-drain interrupt output | Configurable active-high/low; asserts on temperature/VDD/analog limit violations-enables autonomous fault response without polling. |
| CS / Pin 4 | SPI chip select | Active-low frame sync; must be held high during I²C operation to avoid bus contention. |
| SCL/SCLK / Pin 13 | Clock input (I²C/SPI) | Shared clock line; open-drain with pull-up required; supports fast-mode I²C (400 kHz) and SPI up to 10 MHz. |
| SDA/DIN / Pin 12 | Data I/O (I²C) / Data In (SPI) | Open-drain bidirectional (I²C) or unidirectional input (SPI); requires external pull-up resistor (typically 4.7 kΩ). |
| DOUT/ADD / Pin 11 | SPI data out / I²C address select | Output-only in SPI mode; sets I²C slave address (1001000/1001010/1001011) when used as ADD pin in I²C mode. |
| GND / Pin 5 | Analog/digital ground reference | Single ground plane required; decoupling capacitor (0.1 μF) recommended near VDD pin for noise immunity. |
| VDD / Pin 6 | Positive supply (2.7 V–5.5 V) | Supplies all internal circuitry; settling time ≤50 ms; supports brown-out detection in host MCU via INT pin alerts. |
Key Features
| Feature | Design Value |
|---|---|
| Quad 8-bit DAC with rail-to-rail output buffer | Eliminates need for external op-amps; each DAC drives ≥25 mA into resistive loads while maintaining monotonicity across full code range. |
| Integrated 10-bit temperature sensor + ADC | Provides calibrated thermal data (0.25°C resolution) and four auxiliary analog measurements in one IC-reducing BOM count and layout area. |
| Simultaneous DAC update (LDAC function) | Ensures deterministic timing for multi-channel control actions-critical for synchronized actuator positioning or power stage sequencing. |
| Internal 2.28 V reference with 80 ppm/°C drift | Enables self-contained operation without external reference ICs; stable enough for 8-bit DAC linearity (±1 LSB DNL guaranteed). |
| SPI and I²C dual-interface support | Allows drop-in replacement across legacy (I²C) and high-speed (SPI) host designs-no hardware redesign needed for interface migration. |
| Power-on reset to 0 V DAC output | Prevents undefined analog states at startup; guarantees safe initial condition for connected circuits (e.g., amplifier bias networks). |
Applications
| Smart Battery Charger | Industrial Process Controller |
|---|---|
|
Use Scenario: Real-time monitoring of battery cell temperature, charge voltage, and current sense signals during CC/CV charging cycles. IC Role / Device Role / Timing Role: ADT7519ARQ acts as analog front-end: internal temp sensor tracks cell thermal rise, 4-channel ADC reads VBAT, VSENSE, reference voltages, and DACs adjust charger IC reference or enable thresholds. Use Value: Enables adaptive charge termination based on thermal profile-preventing overcharge and extending cycle life without adding discrete sensors or DACs. |
Use Scenario: Closed-loop regulation of heating elements, motor drivers, or valve actuators in HVAC or chemical processing equipment. IC Role / Device Role / Timing Role: ADT7519ARQ functions as local analog controller: measures ambient/process temperature and supply rails, then drives DAC outputs to set PID reference points or bias levels for power stages. Use Value: Reduces latency vs. remote MCU-based control; maintains regulation during communication loss; lowers system cost by integrating sensing + actuation in one package. |
| PC System Health Monitor | Domestic Appliance Control Board |
|
Use Scenario: Monitoring CPU/GPU die temperature, VRM output voltage, fan tachometer signals, and chassis thermistors in desktop/laptop motherboards. IC Role / Device Role / Timing Role: ADT7519ARQ serves as dedicated thermal/power monitor: internal sensor tracks SoC junction temp, ADC channels read rail voltages and external thermistors, DACs generate variable fan speed references. Use Value: Offloads thermal management from main CPU; enables precise, low-latency fan control-reducing acoustic noise and improving thermal throttling accuracy. |
Use Scenario: Temperature-regulated cooking cycles in ovens, refrigeration setpoint control in smart fridges, or motor speed adjustment in washing machines. IC Role / Device Role / Timing Role: ADT7519ARQ operates as embedded analog supervisor: reads oven cavity thermistor, compressor discharge temp, and line voltage, then adjusts heater/cooler DAC outputs and triggers INT on overtemp. Use Value: Meets IEC 60335 safety requirements via autonomous overtemperature shutdown; replaces multiple discrete components-improving reliability and reducing PCB footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog monitoring and control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADT7517ARQ | Quad 10-bit DAC (vs. 8-bit), same ADC/temp sensor specs, identical pinout and interface | Higher DAC resolution supports finer gain/offset calibration in test equipment or medical sensors | Select ADT7517ARQ when >256-step DAC granularity is required; no layout change needed. |
| ADT7516ARQ | Quad 12-bit DAC, otherwise identical architecture and pinout | Used in precision instrumentation requiring sub-1 mV DAC steps (e.g., calibrator outputs, sensor excitation) | Choose ADT7516ARQ only if 12-bit linearity and ±16 LSB relative accuracy are mandatory; higher cost and power. |
Compared with ADT7517ARQ and ADT7516ARQ, the ADT7519ARQ offers optimal balance of integration, cost, and 8-bit control resolution-making it ideal for consumer and industrial applications where thermal monitoring and moderate-precision analog output suffice without over-engineering.
Availability
ADT7519ARQ is available at Aetrix Electronics and suitable for smart battery chargers, PC system health monitors, and domestic appliance control boards requiring stable component supply across extended product lifecycles.
Supply support for ADT7519ARQ 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 ADT7519ARQ belongs to Analog Devices' precision temperature and analog interface product line, designed specifically for embedded systems needing consolidated thermal sensing, multi-channel data acquisition, and programmable voltage control in minimal footprint.
FAQ
What is the maximum operating temperature range for the ADT7519ARQ?
The ADT7519ARQ is rated for continuous operation from −40°C to +120°C. Its internal temperature sensor achieves ±0.5°C typical accuracy within 0°C to +85°C, and ±2°C to ±5°C across the full industrial range-verified per Analog Devices Rev. B specification table. This makes ADT7519ARQ suitable for under-hood automotive modules, industrial motor drives, and high-ambient consumer appliances.
Does the ADT7519ARQ require an external reference voltage?
No, the ADT7519ARQ includes an internal 2.28 V reference with 80 ppm/°C temperature coefficient, sufficient for its 8-bit DACs and 10-bit ADC. However, it also accepts an external reference via VREF-IN (Pin 3) ranging from 1 V to VDD-enabling improved DAC accuracy or custom full-scale ranges. The internal reference remains active unless overridden by a valid external source.
How does the LDAC function work on the ADT7519ARQ?
The LDAC pin (Pin 9) on the ADT7519ARQ is an active-low, edge-triggered control that simultaneously transfers data from all four DAC input registers to their respective output registers. A minimum 20 ns pulse width ensures reliable loading. When enabled (bit C3 = 1 in Control Config 3), LDAC allows synchronous multi-channel updates-eliminating inter-channel timing skew critical for coordinated analog control.
Can the ADT7519ARQ measure external temperature using a transistor?
Yes, the ADT7519ARQ supports external temperature sensing using a standard NPN or PNP bipolar transistor (e.g., 2N3906) connected between Pins 7 (D+/AIN1) and 8 (D−/AIN2). Its on-chip circuitry measures ΔVBE to derive temperature with ±3°C accuracy over −40°C to +120°C. This capability extends thermal monitoring beyond the die to heatsinks, enclosures, or remote components.
What are the power consumption characteristics of the ADT7519ARQ in normal and power-down modes?
In normal operation at 3.3 V, the ADT7519ARQ draws 3 mA typical supply current. In power-down mode-activated via command or hardware CS/LDAC sequence-it consumes <10 μA, reducing power by >99%. Wake-up time from power-down is 2.5 μs (at 5 V) or 5 μs (at 3.3 V), enabling rapid resumption of monitoring in energy-conscious applications like portable instrumentation.
ADT7519ARQ 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
ADT7519ARQ FAQ
1.How can I place an order for ADT7519ARQ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADT7519ARQ 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 ADT7519ARQ reliable?
The price and inventory of ADT7519ARQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADT7519ARQ is usually 5 days.
3.What payment methods are accepted for ADT7519ARQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADT7519ARQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADT7519ARQ?
ADT7519ARQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADT7519ARQ 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 ADT7519ARQ?
For technical support, including ADT7519ARQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADT7519ARQ requirements.
6.How does Aetrix verify that ADT7519ARQ is sourced from the original manufacturer or authorized distributors?
All ADT7519ARQ 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 ADT7519ARQ meets industry standards.
7.What is the process for return or replacement of ADT7519ARQ?
All ADT7519ARQ units undergo pre-shipment inspection (PSI). If there is an issue with ADT7519ARQ, 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 ADT7519ARQ part is unused and in its original packaging.
Return procedure for ADT7519ARQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADT7519ARQ Tags
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MAX6684ESA+T
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