**The AD5643RBRMZ-3: A 14-Bit nanoDAC+™ for Precision Voltage Output Applications**

In the realm of precision analog signal generation, the ability to convert digital commands into highly accurate and stable analog voltages is paramount. The **AD5643RBRMZ-3**, a member of Analog Devices' renowned nanoDAC+™ family, stands out as a premier solution for applications demanding uncompromising precision. This 14-bit, single-channel, voltage-output digital-to-analog converter (DAC) integrates a host of features into an ultra-compact package, making it an ideal choice for space-constrained and power-sensitive designs.

At the core of the AD5643RBRMZ-3 is a **14-bit DAC** capable of generating analog output voltages with exceptional accuracy. The device operates from a single 2.7 V to 5.5 V supply, drawing a remarkably low current of 115 µA at 3 V, which qualifies it for portable and battery-powered equipment. Its architecture includes an internal, precision feedback resistor, enabling it to provide a **buffered voltage output** directly, which simplifies circuit design by eliminating the need for an external amplifier in many cases.

A key differentiator of the nanoDAC+™ series is the inclusion of an **on-chip, 5 ppm/°C reference**. This integrated reference is a significant advantage, as it ensures the overall system accuracy is maintained over temperature variations without the cost and board space of an external component. The AD5643RBRMZ-3 offers a guaranteed monotonicity and provides three output voltage ranges: 0 V to VREF, 0 V to 2×VREF, and a bipolar ±VREF range, offering exceptional flexibility for both unipolar and bipolar output applications.

Communication is handled via a versatile **2-wire serial interface** (I²C-compatible) that operates at clock rates up to 3.4 MHz, facilitating easy connection to a wide array of microcontrollers and processors. The interface also features an optional broadcast mode, allowing simultaneous updates of multiple DACs, which is crucial for complex multi-axis control systems.

The device is offered in a tiny 2 mm × 2 mm LFCSP package, underscoring its suitability for high-density PCB layouts. It is designed to thrive in industrial environments, with an operating temperature range of -40°C to +125°C. Typical applications include:

* Process Control and Automation

* Portable Instrumentation

* Digital Gain and Offset Adjustment

* Programmable Voltage Sources

* Industrial PLCs

**ICGOODFIND:** The AD5643RBRMZ-3 is a highly integrated, precision 14-bit DAC that delivers outstanding performance, stability, and design flexibility. Its combination of an ultra-low power footprint, an internal reference, and a miniature package makes it a superior choice for engineers developing next-generation precision analog systems.

**Keywords:** 14-Bit DAC, Precision Voltage Output, nanoDAC+, Low Power, Integrated Reference