Analog Devices Inc. EVAL-AD7762EDZ

Overview

EVAL-AD7762EDZ from Analog Devices is a dedicated evaluation board for the AD7762 24-bit Σ-Δ ADC, supporting parallel-output operation at up to 625 kSPS. It integrates an on-board 4.096 V reference, 40 MHz crystal oscillator for MCLK generation, differential XLR input interface, and FPGA-based interface logic compatible with EVAL-CED1Z acquisition hardware.

For engineers reviewing the EVAL-AD7762EDZ datasheet, EVAL-AD7762EDZ pinout, EVAL-AD7762EDZ application, or EVAL-AD7762EDZ equivalent, this board enables rapid validation of high-speed, high-SNR data acquisition systems - particularly where wide dynamic range (100 dB SNR), programmable digital filtering, modulator-level analysis, and precise gain/offset calibration are required.

Technical Context

The EVAL-AD7762EDZ implements full hardware support for the AD7762's parallel LVCMOS interface, including configurable MCLK sourcing (on-board 40 MHz crystal or external SMB input), regulated 2.5 V/5 V power domains via ADP3334 LDOs, and differential analog signal conditioning through an on-board amplifier stage aligned with AD7762 datasheet recommendations.

It features dual operational modes: integrated use with EVAL-CED1Z (USB-connected, LabVIEW-driven) for waveform capture, FFT/histogram analysis, and filter programming; or standalone operation requiring user-provided digital interface and data acquisition infrastructure.

Key Specifications

Availability

EVAL-AD7762EDZ is available at Aetrix Electronics and suitable for high-fidelity audio test systems, precision instrumentation calibration, medical signal acquisition, and industrial vibration monitoring requiring stable component supply and validated reference design fidelity.

Supply support for EVAL-AD7762EDZ 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 signal chain solutions.

The EVAL-AD7762EDZ belongs to Analog Devices' precision ADC evaluation platform family, designed specifically to accelerate development of high-SNR, wide-bandwidth measurement systems using the AD7760/AD7762 Σ-Δ converter series.

FAQ

What is the primary function of the EVAL-AD7762EDZ?

The EVAL-AD7762EDZ is a dedicated evaluation board for the AD7762 24-bit Σ-Δ ADC. It provides complete hardware infrastructure-including power regulation, clock generation, differential analog input, and FPGA-based digital interface-to enable functional verification, performance characterization, and firmware development for the AD7762 in real-world signal acquisition applications. The EVAL-AD7762EDZ is not a standalone data acquisition device but requires either EVAL-CED1Z or custom interface hardware to operate.

Does the EVAL-AD7762EDZ support both AD7760 and AD7762 devices?

Yes, the EVAL-AD7762EDZ is explicitly designed as a shared evaluation platform for both the AD7760 and AD7762. Its hardware-power rails, clocking, analog front-end, and interface logic-is fully compatible with both devices. Software selection within the EVAL-AD7760/AD7762EDZ GUI allows users to configure mode-specific parameters such as decimation rates (AD7760: x8–x256; AD7762: x32–x256) and output format, ensuring correct operation for either target IC.

Can the EVAL-AD7762EDZ be used without the EVAL-CED1Z board?

Yes, the EVAL-AD7762EDZ supports standalone operation, but only with user-provided digital interface hardware and software. In standalone mode, the board retains its regulated power supplies, clock sources, analog input path, and AD7762 interface signals (parallel data bus, DRDY, RESET, etc.), but the user must implement all communication, data capture, and register control functions externally. No USB or PC software functionality is available without EVAL-CED1Z.

How is the MCLK signal configured on the EVAL-AD7762EDZ?

The EVAL-AD7762EDZ provides two MCLK options: default 40 MHz from an on-board crystal oscillator (enabled via 0 Ω link R9), or an external clock applied to SMB connector J8 (enabled via 0 Ω link R10). Link LK1 selects the voltage level (5 V or 2.5 V) for the MCLK buffer. The MCLK signal is routed to the AD7762's MCLK pin and also shared with EVAL-CED1Z via R13 when used in integrated mode.

What software tools are provided with the EVAL-AD7762EDZ?

The EVAL-AD7762EDZ ships with EVAL-AD7760_2EDZ evaluation software on CD-ROM, compatible with Windows 2000/XP. This includes LabVIEW-based GUI for real-time waveform display, FFT/histogram analysis, decimation rate control, modulator-mode activation, user-defined FIR filter download, and read/write access to AD7762 gain, offset, and overrange registers. FPGA interface code for EVAL-CED1Z is also included for system customization.