Analog Devices Inc. AD5516ABCZ-3

Overview

AD5516ABCZ-3 from Analog Devices is a 16-channel, 12-bit voltage-output DAC with ±10 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-3 datasheet, AD5516ABCZ-3 pinout, AD5516ABCZ-3 application, or AD5516ABCZ-3 equivalent, key selection criteria include its ±10 V output span, 74-lead CSPBGA package, 25 ms typical calibration time (BUSY low), 12 mm × 12 mm footprint, and support for daisy-chain configuration with DOUT-to-DIN cascading.

Technical Context

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

It supports two operational modes: Mode 1 (12-bit direct load, 32 kHz max update rate) and Mode 2 (14-bit monotonic increment/decrement with ±0.25 LSB step size, 750 kHz max update rate). The device requires dual analog supplies (VDD = +4.75 V to +15.75 V, VSS = –4.75 V to –15.75 V), AVCC = 4.75 V to 5.25 V, and DVCC = 2.7 V to 5.25 V.

Key Specifications

Pinout & Package

AD5516ABCZ-3 is housed in a 74-lead CSPBGA package with 12 mm × 12 mm body size and 0.8 mm ball pitch. The package includes dedicated analog/digital ground separation (AGND, DGND, DACGND), dual VDD/VSS supplies, and individual RFB/VOUT pairs per channel for flexible current drive and feedback configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5516ABCZ-3, AD5546BCPZ trades channel count for higher per-channel resolution and speed, while MAX5717ETN+ sacrifices calibration-based accuracy and RFB flexibility for compact packaging and simpler timing - making AD5516ABCZ-3 optimal for precision, multi-channel, fine-tuning applications requiring guaranteed monotonicity and ±10 V span.

Availability

AD5516ABCZ-3 is available at Aetrix Electronics and suitable for industrial control systems, optical network equipment, and automatic test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for AD5516ABCZ-3 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 AD5516 product line delivers highly integrated, precision multichannel DACs designed specifically for industrial instrumentation, automated test, and optical communications systems requiring synchronized, low-drift analog outputs.

FAQ

What is the output voltage range of the AD5516ABCZ-3?

The AD5516ABCZ-3 has a fixed bipolar output voltage range of ±10 V, determined by its internal scaling architecture and 3 V REF_IN reference. This span is specific to the "-3" variant and cannot be reconfigured to ±2.5 V or ±5 V without hardware change. Output compliance is limited to VSS + 2 V to VDD – 2 V, requiring VDD ≥ +12 V and VSS ≤ –12 V for full ±10 V swing.

How does the increment/decrement mode work in the AD5516ABCZ-3?

The AD5516ABCZ-3 supports Mode 2, where DB11–DB0 define a 0.25 LSB step size for monotonic 14-bit resolution. Writing "01" to MODE bits increments the selected DAC register; "10" decrements it. Each step changes the output by ±0.25 LSB (±2.44 mV for ±10 V span), enabling fine-tuning without recalibration. Total range is ±4095 steps, and BUSY remains high during Mode 2 updates.

What is the function of the RFB pins on the AD5516ABCZ-3?

The RFB0–RFB15 pins on the AD5516ABCZ-3 provide external access to each DAC's internal feedback resistor. They are not intended for gain adjustment. Instead, connecting RFBx to its corresponding VOUTx enables nominal operation; disconnecting and adding external circuitry allows programmable current sourcing/sinking or enhanced drive capability - e.g., driving 5 kΩ loads while maintaining 0.5 Ω output impedance.

Does the AD5516ABCZ-3 require an external reference voltage?

Yes, the AD5516ABCZ-3 requires a stable, low-noise 3 V reference applied to the REF_IN pin. This single reference serves all 16 DACs and directly scales the ±10 V output span. Analog Devices recommends the AD780 voltage reference due to its specified decoupling and <1 nA input current, which minimizes error contribution. REF_IN must remain within 2.875 V to 3.125 V for specified performance.

What is the purpose of the BUSY pin on the AD5516ABCZ-3?

The BUSY pin on the AD5516ABCZ-3 is an open-drain active-low output that signals when the internal analog calibration loop is active. It goes low for ~25 ms after each Mode 1 write, during which time the DAC performs self-calibration to maintain 12-bit linearity. All subsequent SCLK pulses are ignored while BUSY is low, enforcing strict timing discipline in host firmware.