Analog Devices Inc. AD5516ABCZ-2

Overview

AD5516ABCZ-2 from Analog Devices is a 16-channel, 12-bit voltage-output DAC with ±5 V bipolar output range, guaranteed monotonic performance, and 14-bit resolution via increment/decrement mode. It features a 3-wire SPI/QSPI/MICROWIRE-compatible serial interface, asynchronous reset and power-down control, and operates across –40°C to +85°C for industrial instrumentation and automatic test equipment.

For engineers reviewing the AD5516ABCZ-2 datasheet, AD5516ABCZ-2 pinout, AD5516ABCZ-2 application, or AD5516ABCZ-2 equivalent, key selection considerations include its 74-lead CSPBGA package, dual supply rails (VDD/VSS), feedback resistor access (RFB0–RFB15), and BUSY-synchronized calibration timing.

Technical Context

The AD5516ABCZ-2 implements a self-calibrating resistor-string DAC architecture with internal 14-bit servo loop, where BUSY asserts low for ~25 ms during analog calibration. Each of the 16 channels shares a single 3 V reference input (REF_IN) and uses offset-binary coding to generate precise ±5 V outputs.

It supports two operational modes: Mode 1 (12-bit direct write, 25 ms update) and Mode 2 (14-bit fine adjustment via 0.25 LSB steps, ~1 ms update). Daisy-chain capability is enabled via DCEN, and digital interface timing complies with SPI standards up to 20 MHz SCLK.

Key Specifications

Pinout & Package

The AD5516ABCZ-2 is housed in a 74-lead CSPBGA package measuring 12 mm × 12 mm with 0.8 mm ball pitch. Pin functions are defined per ball position in the official Analog Devices pin configuration diagram.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multichannel voltage-output DAC applications.

Compared with AD5516ABCZ-2, AD5666BCPZ-2 offers higher resolution but less flexibility in multi-device synchronization and fine-resolution control, while MAX5216ETL+T trades calibration accuracy and advanced interface features for ease of integration in I²C-based designs.

Availability

AD5516ABCZ-2 is available at Aetrix Electronics and suitable for instrumentation calibration, automatic test equipment, and optical network control requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD5516ABCZ-2 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, communications, and automotive markets since 1965.

The AD5516 product line delivers highly integrated, calibrated multichannel DACs for precision analog output systems where channel density, monotonicity, and flexible interface modes are critical design requirements.

FAQ

What is the output voltage range of the AD5516ABCZ-2?

The AD5516ABCZ-2 provides a fixed bipolar output range of ±5 V. This is achieved using internal scaling circuitry referenced to a 3 V input on REF_IN, and requires compliant dual supplies: VDD ≥ +4.75 V and VSS ≤ –4.75 V. The output span remains stable across temperature (10 ppm/°C typical) and load conditions up to 5 kΩ resistive or 200 pF capacitive.

How does the increment/decrement mode work in the AD5516ABCZ-2?

The AD5516ABCZ-2 supports Mode 2, where 12 data bits define a 0.25 LSB step size (up to ±4095 steps), enabling 14-bit monotonic tuning. When MODE bits = 01, the DAC output increments; when = 10, it decrements. Each update completes in ~1 ms, and BUSY remains high-unlike Mode 1's 25 ms BUSY assertion-making it ideal for real-time servo adjustments.

What is the function of the RFB pins on the AD5516ABCZ-2?

The RFB0–RFB15 pins on the AD5516ABCZ-2 provide direct access to internal feedback resistors for each DAC channel. They are not intended for gain adjustment but allow external current-source configurations-for example, connecting RFBx to a transistor base to create programmable bias currents. Using them avoids adding external op-amps or discrete resistors in current-output applications.

Does the AD5516ABCZ-2 require an external reference voltage?

Yes-the AD5516ABCZ-2 requires an external 3 V reference applied to REF_IN. The device does not include an internal reference. Analog Devices recommends the AD780 for optimal performance due to its low noise, high stability, and specified decoupling scheme, which minimizes calibration errors and output drift caused by REF_IN noise during the BUSY-active calibration period.

Can multiple AD5516ABCZ-2 devices be connected in daisy-chain mode?

Yes-daisy-chaining is supported when DCEN is driven high. In this mode, SCLK is continuously gated, allowing serial data to ripple through multiple AD5516ABCZ-2 devices using a single DIN/DOUT path. Each device consumes 18 clock cycles; for N devices, exactly 18×N clocks are required. SYNC must go high after the final clock to latch data into respective DAC registers simultaneously.