Analog Devices Inc. ADT7519ARQZ

Overview

ADT7519ARQZ 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 support, and provides buffered rail-to-rail DAC outputs with 7 μs typical settling time - used for closed-loop thermal management in smart battery chargers and PC thermal monitoring.

For engineers reviewing the ADT7519ARQZ datasheet, ADT7519ARQZ pinout, ADT7519ARQZ application, or ADT7519ARQZ equivalent, key selection criteria include its 8-bit DAC resolution, internal 2.28 V reference option, simultaneous LDAC-controlled output update capability, and guaranteed monotonicity across all codes - critical for precision analog control in embedded thermal systems.

Technical Context

The ADT7519ARQZ integrates three core subsystems: 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 independent 8-bit string DACs with on-chip rail-to-rail output buffers. All subsystems share a common 2.7–5.5 V supply and are synchronized via a unified register map.

It supports two serial protocols: a 4-wire SPI-compatible interface (CS/SCLK/SDA/DOUT) and a 2-wire SMBus/I²C interface (SCL/SDA), both featuring packet error checking (PEC) and configurable I²C address (via ADD pin). Power-down mode draws <10 μA, and power-on reset ensures DAC outputs initialize to 0 V.

Key Specifications

Pinout & Package

ADT7519ARQZ is housed in a 16-lead QSOP (Quarter-Size Outline Package) with 0.65 mm lead pitch, surface-mount compatible, and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar temperature-sensing and analog I/O applications.

Compared with ADT7519ARQZ, ADT7517ARQZ offers 4× DAC resolution and improved INL for tighter analog control, while ADT7516ARQZ adds 16× resolution at higher cost and slightly reduced monotonic margin - all share identical ADC, temperature sensor, interface, and package, enabling drop-in hardware reuse with firmware DAC scaling adjustments.

Availability

ADT7519ARQZ is available at Aetrix Electronics and suitable for smart battery chargers, PC thermal monitoring systems, and industrial process controllers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for ADT7519ARQZ 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, with design and manufacturing expertise spanning precision sensing, power management, and RF technologies.

The ADT7519ARQZ belongs to Analog Devices' ADT751x family of integrated thermal management ICs, designed specifically to consolidate temperature sensing, multichannel data acquisition, and analog output generation into a single compact solution for space-constrained embedded thermal control applications.

FAQ

What is the DAC resolution of the ADT7519ARQZ?

The ADT7519ARQZ features quad 8-bit DACs, providing 256 discrete output levels per channel (0x00 to 0xFF). This resolution is optimized for cost-sensitive thermal control applications where fine-grained analog tuning is not required, and guaranteed monotonicity ensures no output glitches across code transitions.

Does the ADT7519ARQZ support both SPI and I²C interfaces?

Yes, the ADT7519ARQZ supports both SPI (4-wire) and I²C (2-wire SMBus-compatible) serial interfaces. The interface mode is selected automatically by how the CS pin is driven: CS low enables SPI; CS high enables I²C. Both interfaces share SDA/SCL/DOUT pins and support packet error checking (PEC).

What is the temperature accuracy specification for the ADT7519ARQZ?

The ADT7519ARQZ achieves ±0.5°C typical accuracy over the 0°C to +85°C range when powered from 3.3 V ±10%. Over the full −40°C to +120°C operating range, accuracy degrades to ±2°C (typ) to ±5°C (max), as specified in Table 1 of the Rev. B datasheet.

Can the ADT7519ARQZ measure external temperature using a transistor?

Yes, the ADT7519ARQZ supports external temperature measurement using a standard NPN or PNP bipolar transistor (e.g., 2N3906) connected between Pins 7 (D+) and 8 (D−). Its on-chip current source and ADC digitize the base-emitter voltage, delivering 10-bit resolution (0.25°C equivalent) with ±3°C accuracy over −40°C to +120°C.

What package type is used for the ADT7519ARQZ?

The ADT7519ARQZ is supplied in a 16-lead QSOP (Quarter-Size Outline Package) with 0.65 mm lead pitch. This surface-mount package is RoHS-compliant, JEDEC-standardized, and compatible with standard reflow soldering profiles including lead-free peak temperatures up to 260°C.