Analog Devices Inc. ADT7519ARQZ-REEL7

Overview

ADT7519ARQZ-REEL7 from Analog Devices is an integrated 8-bit quad DAC, 10-bit 4-channel ADC, and 10-bit temperature sensor 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, supports SPI/I²C interfaces, and features buffered voltage outputs (0 V to VREF) 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-REEL7 datasheet, ADT7519ARQZ-REEL7 pinout, ADT7519ARQZ-REEL7 application, or ADT7519ARQZ-REEL7 equivalent, key selection criteria include its 8-bit DAC resolution, internal 2.28 V reference option, simultaneous LDAC update capability, rail-to-rail output buffers, and dual-interface compatibility for embedded system integration with minimal footprint.

Technical Context

The ADT7519ARQZ-REEL7 integrates three independent data conversion subsystems: a 10-bit successive-approximation ADC with DC input bandwidth and 0 V–2.28 V range; a 10-bit bandgap-based temperature sensor with 0.25°C resolution; and four 8-bit string DACs with double-buffered registers and software/hardware LDAC control. All share a common serial interface engine supporting both 4-wire SPI and 2-wire I²C/SMBus protocols.

Its analog front-end includes buffered reference input (1 MΩ impedance), rail-to-rail output amplifiers per DAC channel, and configurable analog inputs (AIN1–AIN4) that double as external transistor temperature sensor terminals (D+/D−). Power-down mode draws <10 μA, and power-on reset ensures DAC outputs initialize to 0 V.

Key Specifications

Pinout & Package

ADT7519ARQZ-REEL7 is housed in a 16-lead QSOP (Quarter Size Outline Package) with 0.635 mm lead pitch and exposed pad not electrically connected. The package meets JEDEC MS-012 standards and supports IR reflow soldering up to 260°C peak (Pb-free).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar mixed-signal monitoring and control applications.

Compared with ADT7519ARQZ-REEL7, the ADT7517ARQZ-REEL7 offers improved DAC resolution and accuracy at modest cost increase, while ADT7516ARQZ-REEL7 targets high-end applications needing 12-bit fidelity - all share identical pinout, package, and interface, enabling scalable design reuse.

Availability

ADT7519ARQZ-REEL7 is available at Aetrix Electronics and suitable for smart battery chargers, PC thermal monitoring, and domestic appliance control requiring stable component supply and long-term manufacturing continuity.

Supply support for ADT7519ARQZ-REEL7 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 ADT7519ARQZ-REEL7 belongs to the ADT7516/ADT7517/ADT7519 family - designed specifically for embedded thermal management and multi-channel analog monitoring in space-constrained, low-power systems.

FAQ

What is the DAC resolution of the ADT7519ARQZ-REEL7?

The ADT7519ARQZ-REEL7 features four 8-bit digital-to-analog converters, providing 256 discrete output levels per channel. This resolution is optimized for cost-sensitive thermal control and bias adjustment applications where sub-degree temperature resolution or coarse analog setpoints are sufficient. Its guaranteed monotonicity ensures predictable stepwise output behavior across the full code range.

Does the ADT7519ARQZ-REEL7 support both SPI and I²C communication?

Yes, the ADT7519ARQZ-REEL7 supports both SPI and I²C serial interfaces. It uses a shared pin set (SCL/SCLK, SDA/DIN, DOUT/ADD, CS) with mode selection determined by protocol timing and control register settings. No hardware modification is needed to switch between interfaces - configuration is handled entirely in firmware via the Control Configuration registers.

What is the temperature accuracy specification for the ADT7519ARQZ-REEL7?

The ADT7519ARQZ-REEL7 achieves ±0.5°C typical accuracy for internal temperature measurements over the 0°C to +85°C range, and ±2°C maximum over −40°C to +120°C. This performance is specified with VDD = 3.3 V ±10% and relies on the on-chip bandgap sensor and 10-bit ADC. External transistor sensing adds ±3°C error at 0°C–85°C.

Can the ADT7519ARQZ-REEL7 operate from a 3.3 V supply?

Yes, the ADT7519ARQZ-REEL7 operates across a 2.7 V to 5.5 V supply range, fully supporting 3.3 V nominal systems. At 3.3 V, it draws 2.2 mA typical supply current in normal mode and less than 10 μA in power-down mode. The internal 2.28 V reference remains stable, and DAC outputs scale linearly from 0 V to VREF regardless of VDD within spec.

How does the LDAC function work on the ADT7519ARQZ-REEL7?

The LDAC pin on the ADT7519ARQZ-REEL7 is an active-low hardware control that simultaneously updates all four DAC registers from their respective input buffers. A minimum 20 ns pulse triggers synchronous output changes, eliminating inter-channel glitches. Software LDAC control is also available via bit C3 in Control Configuration 3 register, allowing flexible update timing in interrupt-driven or polled firmware architectures.