Analog Devices Inc. EVAL-AD4111SDZ

Overview

EVAL-AD4111SDZ from Analog Devices is a full-featured evaluation board for the AD4111 24-bit Σ-Δ ADC, supporting ±10 V voltage inputs (eight single-ended or four differential) and 0 mA to 20 mA current inputs with open wire detection, on-board overvoltage/overcurrent protection, and isolated power/data interfaces via ADuM5411.

For engineers reviewing the EVAL-AD4111SDZ datasheet, EVAL-AD4111SDZ pinout, EVAL-AD4111SDZ application, or EVAL-AD4111SDZ equivalent, this board enables rapid validation of high-accuracy industrial analog front ends-especially for PLC I/O modules, process transmitters, and condition monitoring systems requiring ±10 V and 4–20 mA signal conditioning with integrated reference and isolation.

Technical Context

The EVAL-AD4111SDZ interfaces directly with the SDP-B system demonstration platform (EVAL-SDP-CB1Z) via SPI (CS, SCLK, DIN, DOUT/RDY), using the ADSP-BF527 Blackfin processor for PC communication over USB. It incorporates an ADR4525ARZ 2.5 V precision voltage reference and ADuM5411 isoPower digital isolator providing 2.5 kV_rms isolation between analog and digital domains.

Hardware configuration supports dual power options (SDP-B USB-derived 5 V or external DC via J6/J7), selectable isolated supply voltage (5 V or 3.3 V via R37), and flexible analog input routing via solder links LK1 (reference connection) and LK2 (VCOM grounding). All eight voltage inputs (J1/J2) and four current inputs (J3) are protected and routed through precision buffers and filtering networks aligned with AD4111's internal architecture.

Key Specifications

Availability

EVAL-AD4111SDZ is available at Aetrix Electronics and suitable for industrial automation prototyping, PLC I/O module development, and process transmitter design requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for EVAL-AD4111SDZ 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 deep expertise in precision data conversion and industrial interface solutions.

The EVAL-AD4111SDZ belongs to Analog Devices' precision ADC evaluation platform family, designed specifically to accelerate development of robust, isolated analog input modules for harsh industrial environments-including factory automation, energy metering, and distributed control systems.

FAQ

What is the primary function of the EVAL-AD4111SDZ?

The EVAL-AD4111SDZ is a dedicated evaluation board for the AD4111 24-bit Σ-Δ ADC. It provides complete hardware and software infrastructure-including isolated power, precision reference, protected analog inputs, and SPI interface-to validate the AD4111's performance in industrial applications such as programmable logic controller (PLC) analog input modules and process transmitters. The EVAL-AD4111SDZ enables full-feature testing without custom PCB design.

Which host platforms does the EVAL-AD4111SDZ support?

The EVAL-AD4111SDZ is natively designed for use with the EVAL-SDP-CB1Z (SDP-B) system demonstration platform, which provides USB-to-SPI bridging and 5 V power via PC USB. It also supports direct connection to the EVAL-ADuCM3029 EZ-KIT for embedded C-code development. Standalone operation is possible via J10, exposing all SPI signals and power pins for custom host integration.

Does the EVAL-AD4111SDZ include on-board isolation?

Yes, the EVAL-AD4111SDZ integrates the ADuM5411 isoPower digital isolator, delivering 2.5 kV_rms galvanic isolation between the digital domain (SDP-B interface) and the analog domain (AD4111, inputs, reference, and power). This ensures safe, noise-immune operation in electrically noisy industrial settings and meets key safety standards for field-side signal acquisition.

What software is required to operate the EVAL-AD4111SDZ?

The AD411x Eval+ evaluation software is mandatory for full functionality of the EVAL-AD4111SDZ. It provides intuitive GUI-based configuration, real-time waveform visualization (voltage/current), histogram analysis, noise metrics (P-P, RMS), open wire detection status, and low-level register access in Advanced Mode. The software requires Windows OS and installs dependencies including SDP-B drivers.

Can the EVAL-AD4111SDZ be powered from an external supply?

Yes-the EVAL-AD4111SDZ supports three power configurations: (1) from the SDP-B board via J8 (default), (2) from external DC sources via J6 or J7 (LK3 set to Position A), or (3) directly via +5V on J10. The isolated supply voltage (+VA_ISO) is configurable to 5 V (R37 open) or 3.3 V (R37 shorted), enabling compatibility with diverse host systems and voltage domain requirements.