Analog Devices Inc. EVAL-AD7402-8FMCZ

Overview

EVAL-AD7402-8FMCZ from Analog Devices is a full-featured evaluation board for the AD7402 16-bit isolated sigma-delta ADC, supporting standalone and SDP-H1–controlled operation via FMC interface (J9), featuring on-board ADuM6000 isolated 5 V power, ADP2441 step-down regulator, and ADP7104 LDO for clean analog/digital rail separation.

For engineers reviewing the EVAL-AD7402-8FMCZ datasheet, EVAL-AD7402-8FMCZ pinout, EVAL-AD7402-8FMCZ application, or EVAL-AD7402-8FMCZ equivalent, key selection considerations include FMC compatibility with EVAL-SDP-CH1Z, ±250 mV differential input range support, 10 MHz data stream output, isolated 5 kV iCoupler power and signal paths, and PC-based waveform/FFT/histogram analysis capability via included AD740x Evaluation Software.

Technical Context

The EVAL-AD7402-8FMCZ implements a complete test environment for the AD7402 - a second-order Σ-Δ modulator delivering a single-bit 10 MHz serial output stream with galvanic isolation. It interfaces directly to the SDP-H1 controller board (EVAL-SDP-CH1Z) via a high-speed FMC connector, enabling USB-hosted control and real-time data capture.

On-board power architecture separates GND1 and GND2 ground planes with 8 mm creepage/clearance, supplies VDD1 (4.5–5.5 V) via ADuM6000 isoPower or external 24 V/J7 + ADP2441, and provides VDD2 (3.3 V or 3–5.5 V) from SDP-H1 or J6. Analog inputs accept ±250 mV differential signals at J1/J2 with configurable common-mode grounding via LK8.

Key Specifications

Availability

EVAL-AD7402-8FMCZ is available at Aetrix Electronics and suitable for industrial motor control, energy metering, isolated current sensing, and power supply monitoring applications requiring stable component supply and rapid ADC performance validation.

Supply support for EVAL-AD7402-8FMCZ 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, serving industrial, automotive, communications, and healthcare markets.

The EVAL-AD7402-8FMCZ belongs to Analog Devices' precision isolated ADC evaluation platform family, designed specifically to accelerate development of high-fidelity, safety-certifiable current and voltage measurement systems using sigma-delta isolation technology.

FAQ

What is the primary function of the EVAL-AD7402-8FMCZ?

The EVAL-AD7402-8FMCZ is an evaluation board dedicated to the AD7402 isolated 16-bit sigma-delta ADC. It enables full characterization of the AD7402's performance-including SNR, THD, SINAD, and code distribution-via PC-connected software and hardware interfaces. The EVAL-AD7402-8FMCZ itself is not an IC but a daughterboard that hosts the AD7402 and associated support circuitry, including isolated power and configurable signal routing.

Which controller board is required to operate the EVAL-AD7402-8FMCZ in standard mode?

The EVAL-AD7402-8FMCZ requires the EVAL-SDP-CH1Z (SDP-H1) system demonstration platform board for standard operation. It connects via the FMC connector (J9), allowing USB-based control through the AD740x Evaluation Software. Without EVAL-SDP-CH1Z, the EVAL-AD7402-8FMCZ can operate in standalone mode using SMB jacks J3 and J4, but full GUI-driven analysis requires the SDP-H1 controller.

Does the EVAL-AD7402-8FMCZ provide isolated power for the AD7402?

Yes, the EVAL-AD7402-8FMCZ provides isolated 5 V power to the AD7402's VDD1 rail using the ADuM6000 iCoupler dc-to-dc converter, rated for 5 kV rms isolation. This ensures galvanic separation between the analog input domain and digital interface domain. VDD2 (3.3 V) is supplied either from the EVAL-SDP-CH1Z or externally via J6, maintaining independent ground planes (GND1/GND2) with 8 mm creepage.

Can the EVAL-AD7402-8FMCZ be used without a PC?

No - the EVAL-AD7402-8FMCZ does not operate autonomously. It requires either the EVAL-SDP-CH1Z controller board (connected to a Windows PC via USB) or an external FPGA/microcontroller capable of driving the AD7402's 10 MHz serial interface (MCLKOUT/MDAT). While standalone signal routing is possible via J3/J4, configuration, data capture, and analysis depend on host software or custom firmware.

What software is included with the EVAL-AD7402-8FMCZ kit?

The EVAL-AD7402-8FMCZ kit includes the AD740x Evaluation Software on CD and available for download. This Windows application supports waveform capture, histogram analysis (DC offset, transition noise), FFT-based AC performance metrics (SNR, THD, SINAD), and summary reporting. It requires installation before connecting hardware and is compatible with Windows Vista/7 and later versions with USB 2.0.