Analog Devices Inc. EVAL-AD7405FMCZ

Overview

EVAL-AD7405FMCZ from Analog Devices is a full-featured evaluation board for the AD7405 16-bit isolated sigma-delta ADC, supporting differential ±250 mV analog input, 20 MHz data rate output, and galvanic isolation up to 5 kV. It integrates on-board ADuM6000 isolated DC/DC, ADP2441 step-down regulator, and ADP7104 low-noise LDO to power both analog (VDD1) and digital (VDD2) rails independently.

For engineers reviewing the EVAL-AD7405FMCZ datasheet, EVAL-AD7405FMCZ pinout, EVAL-AD7405FMCZ application, or EVAL-AD7405FMCZ equivalent, this page delivers verified hardware configuration options, SDP-H1 interface compatibility, standalone mode operation via J3/J4 SMB connectors, and PC-based waveform/FFT/histogram analysis capabilities using included evaluation software.

Technical Context

The EVAL-AD7405FMCZ interfaces directly with the EVAL-SDP-CH1Z system demonstration platform via its FMCZ connector (J9), enabling USB-controlled operation through an Xilinx Spartan-6 FPGA. It supports two distinct power configurations: default SDP-H1–sourced 12 V → on-board ADP2441 → ADuM6000 → isolated 5 V (VDD1), and 3.3 V (VDD2) supplied directly from SDP-H1.

Standalone operation is enabled by configuring link options LK1/LK2/LK5 per Table 2 and applying external signals to J3 (MCLK input) and J4 (MDAT output); analog input is routed through J1 (VIN+) and J2 (VIN−), with physically isolated GND1/GND2 planes maintaining 8 mm creepage/clearance for high-voltage shunt monitoring applications.

Key Specifications

Availability

EVAL-AD7405FMCZ is available at Aetrix Electronics and suitable for industrial motor control, energy metering, and isolated current sensing applications requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for EVAL-AD7405FMCZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and industrial systems.

EVAL-AD7405FMCZ belongs to Analog Devices' evaluation platform family for isolated data acquisition, designed specifically to accelerate validation of the AD7405's galvanically isolated sigma-delta architecture in high-voltage, noise-sensitive environments.

FAQ

What equipment is required to operate the EVAL-AD7405FMCZ?

The EVAL-AD7405FMCZ requires the EVAL-SDP-CH1Z system demonstration platform (including USB cable and 12 V wall adapter), a Windows PC (XP SP3/Vista/7) with USB 2.0 port, and a signal source delivering ≤500 mV_p-p differential input. The kit includes evaluation software on CD; no additional hardware is needed for basic operation beyond these items. The EVAL-AD7405FMCZ itself contains all necessary power regulation and isolation circuitry including ADuM6000, ADP2441, and ADP7104.

How does the EVAL-AD7405FMCZ connect to a PC?

The EVAL-AD7405FMCZ connects to a PC exclusively through the EVAL-SDP-CH1Z board: the daughter board attaches to the SDP-H1's FMC connector (J4), while the SDP-H1 links to the PC via USB. Drivers for EVAL-SDP-CH1Z must be installed first; once recognized under "ADI Development Tools" in Device Manager as "Analog Devices SDP-H1", the EVAL-AD7405FMCZ becomes controllable via the dedicated AD7405 evaluation software. Direct USB connection of EVAL-AD7405FMCZ is not supported.

Can the EVAL-AD7405FMCZ operate without the EVAL-SDP-CH1Z?

Yes - the EVAL-AD7405FMCZ supports standalone mode using external clock and data interface: configure LK1/LK2/LK5 per Table 2, then apply MCLK to J3 and receive MDAT from J4 via SMB connectors. In this mode, the board retains full analog signal conditioning and isolated power delivery but requires external FPGA or logic to process the 20 MHz 1-bit stream. Standalone use bypasses PC software and eliminates dependency on EVAL-SDP-CH1Z.

What are the power supply options for VDD1 and VDD2 on the EVAL-AD7405FMCZ?

VDD1 (5 V analog rail) can be sourced from three paths: (1) default - isolated 5 V from ADuM6000 powered by SDP-H1's 12 V, (2) external 4.5–5.5 V via J3, or (3) 24 V ±5% via J4 stepped down by ADP2441. VDD2 (digital rail) accepts 3–5.5 V externally via J5, but when used with EVAL-SDP-CH1Z, it defaults to 3.3 V ±5% supplied directly from the SDP-H1 board. Caution: exceeding 3.3 V on J5 while SDP-H1 is connected may damage the controller board.

Which performance metrics does the EVAL-AD7405FMCZ software measure?

The included evaluation software computes and displays SNR, THD, SINAD, dynamic range, and noise floor from FFT analysis; DC offset, transition noise (standard deviation), and code distribution from histogram analysis; and amplitude, frequency, min/max/mean values from time-domain waveform capture. All measurements are derived from raw 1-bit data streamed from the AD7405 on the EVAL-AD7405FMCZ, processed in real time by the SDP-H1's FPGA and analyzed on the host PC.