Analog Devices Inc. EVAL-AD4114SDZ

Overview

EVAL-AD4114SDZ from Analog Devices is a full-featured evaluation board for the AD4114 24-bit sigma-delta ADC, supporting ±10 V input range, 31.25 kSPS maximum output data rate, and 16 single-ended or 8 differential analog inputs with on-board overvoltage/overcurrent protection. It enables rapid functional validation and performance characterization of high-precision sensor signal chains in industrial process control and precision instrumentation.

For engineers reviewing the EVAL-AD4114SDZ datasheet, EVAL-AD4114SDZ pinout, EVAL-AD4114SDZ application, or EVAL-AD4114SDZ equivalent, key selection considerations include SDP-B/SDP-K1 hardware compatibility, AD411x Eval+ software integration, isolated power/data interface via ADuM5411, and configurable reference options including onboard ADR4525 2.5 V precision voltage reference.

Technical Context

The EVAL-AD4114SDZ interfaces directly with the AD4114 ADC via SPI (CS, SCLK, DIN, DOUT/RDY), using an ADuM5411 digital isolator to provide 2.5 kV_rms galvanic isolation for both power and data lines. It supports dual power sources: USB-derived 5 V or 3.3 V via SDP board (LK3 Position B) or external DC supply at J4 (LK3 Position A).

Analog input routing includes 16 voltage inputs across Phoenix Contact headers J2/J3, with configurable common-mode setup via VINCOM (J3 Pin 5) and jumper-selectable overvoltage protection (LK9/LK10). Reference configuration uses either the onboard ADR4525ARZ (U2, 2.5 V) or external references, selected via LK1 and software-controlled in AD411x Eval+.

Key Specifications

Availability

EVAL-AD4114SDZ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, weigh scale systems, and automated test equipment requiring stable component supply and validated evaluation infrastructure.

Supply support for EVAL-AD4114SDZ 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 EVAL-AD4114SDZ belongs to Analog Devices' precision data acquisition evaluation platform family, designed specifically to accelerate development of high-resolution, low-noise measurement systems using their AD411x series sigma-delta ADCs.

FAQ

What hardware is required to operate the EVAL-AD4114SDZ?

The EVAL-AD4114SDZ requires either the EVAL-SDP-CB1Z (SDP-B) or EVAL-SDP-CK1Z (SDP-K1) system demonstration platform board for USB connectivity and power delivery. A Windows PC with USB 2.0 port, AD411x Eval+ software, and a DC signal source are also mandatory. Arduino-compatible headers are provided for alternative microcontroller interfacing, but SDP hardware remains essential for full evaluation capability with EVAL-AD4114SDZ.

Does the EVAL-AD4114SDZ include its own voltage reference?

Yes, the EVAL-AD4114SDZ includes an onboard ADR4525ARZ 2.5 V precision voltage reference (U2) connected to the AD4114 REF+ pin by default via LK1. This reference can be disabled by removing LK1 to allow use of an external reference. The AD411x Eval+ software provides controls to configure reference selection and voltage value for accurate conversion calculations when using EVAL-AD4114SDZ.

How is isolation implemented on the EVAL-AD4114SDZ?

Isolation on the EVAL-AD4114SDZ is implemented using the ADuM5411 digital isolator (U3), which provides 2.5 kV_rms galvanic isolation for both power and SPI data lines between the SDP host and the AD4114 circuitry. This ensures safe, noise-immune operation in electrically noisy industrial environments and protects host equipment during EVAL-AD4114SDZ testing.

Can the EVAL-AD4114SDZ be powered from an external supply instead of USB?

Yes, the EVAL-AD4114SDZ can be powered from an external DC supply via terminal block J4. This requires moving LK3 to Position A (External Supply), as specified in the UG-1819 user guide. Default operation uses USB power through the SDP board (LK3 Position B), delivering either 5 V or 3.3 V depending on R35 configuration - open for 5 V, shorted for 3.3 V output from the ADuM5411 regulator.

What software tools are included with the EVAL-AD4114SDZ?

The EVAL-AD4114SDZ ships with AD411x Eval+ evaluation software, which provides full GUI-based control of the AD4114 via the SDP interface. Key capabilities include real-time configuration of input channels, output data rate, filter settings, and reference selection; time-domain waveform visualization; histogram-based noise analysis; RMS and peak-to-peak noise calculation; and register-level access in Advanced Mode - all integral to validating EVAL-AD4114SDZ performance.