Analog Devices Inc. EV-AD7768-1FMCZ

Overview

EV-AD7768-1FMCZ from Analog Devices is a fully featured evaluation board for the AD7768-1 24-bit, 256 kSPS sigma-delta ADC, supporting PC-based register configuration, time-domain waveform analysis, FFT spectral analysis, and histogram-based noise evaluation via USB-connected EVAL-SDP-CH1Z platform.

For engineers reviewing the EV-AD7768-1FMCZ datasheet, EV-AD7768-1FMCZ pinout, EV-AD7768-1FMCZ application, or EV-AD7768-1FMCZ equivalent, this board enables rapid validation of high-resolution ADC performance in precision data acquisition systems requiring dynamic range >114 dB, low-power operation modes, and flexible digital filter upload capability.

Technical Context

The EV-AD7768-1FMCZ interfaces exclusively with the EVAL-SDP-CH1Z motherboard via 100-pin FMC connector (P1), delivering SPI-controlled register access, synchronized sampling triggers, and real-time data streaming at up to 256 kSPS. It supports both pin-mode and SPI-mode control of the AD7768-1 via configurable solder links (SPI1_A/SPI1_B) and provides selectable clock sources: 16 MHz SDP-H1 oscillator, 16.384 MHz on-board crystal (Y1), or external MCLK via SMB connector J1.

Power architecture includes ADP7118 LDOs generating regulated 5 V (AVDD1/AVDD2), 3.3 V (IOVDD), and 7 V (amplifier/reference supply), with VINSEL link selecting between 12 V input from EVAL-SDP-CH1Z (Position B) or external P6 source (Position A). Analog front-end features ADR4540 4.096 V reference, ADA4807-2 buffered VCM at 2.5 V, and dual-path input routing-through or bypassing the driver amplifier-to AIN1+/AIN1− terminals or SMB connectors.

Key Specifications

Availability

EV-AD7768-1FMCZ is available at Aetrix Electronics and suitable for precision test equipment, industrial process monitoring, seismic data acquisition, and medical instrumentation requiring stable component supply and validated ADC evaluation infrastructure.

Supply support for EV-AD7768-1FMCZ 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 Wilmington, MA, with design centers worldwide.

The EV-AD7768-1FMCZ belongs to Analog Devices' precision data acquisition evaluation platform family, engineered specifically to accelerate development of high-fidelity measurement systems using their ultra-low-noise, power-scalable sigma-delta ADCs.

FAQ

What is the primary function of the EV-AD7768-1FMCZ?

The EV-AD7768-1FMCZ is an evaluation board designed exclusively for the AD7768-1 24-bit, 256 kSPS sigma-delta ADC. It enables full functional validation-including register configuration, dynamic performance testing (SNR, THD, dynamic range), and custom digital filter upload-via PC software connected through the EVAL-SDP-CH1Z platform. The EV-AD7768-1FMCZ does not operate as a standalone product but serves as a hardware-software reference system for engineering evaluation of the AD7768-1 in precision applications.

Which host platform is required to operate the EV-AD7768-1FMCZ?

The EV-AD7768-1FMCZ requires the EVAL-SDP-CH1Z system demonstration platform board as its mandatory host interface. It connects mechanically and electrically via the 100-pin FMC connector (P1), drawing regulated 5 V and 3.3 V power from the SDP-H1 and communicating with the AD7768-1 over SPI. No alternate host platforms are supported-the EV-AD7768-1FMCZ firmware, drivers, and software are built specifically for interoperability with EVAL-SDP-CH1Z and Windows 7/8/10.

Does the EV-AD7768-1FMCZ support standalone operation without a PC?

No, the EV-AD7768-1FMCZ has no standalone operation capability. It lacks onboard microcontroller, local storage, display, or autonomous sampling logic. All configuration, triggering, data capture, and analysis depend entirely on the EV-AD7768-1FMCZ evaluation software running on a Windows PC connected via USB to the EVAL-SDP-CH1Z. Even basic functions like ADC reset, register write, or filter upload require active PC software interaction.

What analog input configurations does the EV-AD7768-1FMCZ support?

The EV-AD7768-1FMCZ supports three analog input paths: (1) SMB connectors AIN1+/AIN1− for AC-coupled signals, (2) terminal block P3 for DC-coupled inputs, and (3) optional mezzanine card interface for evaluating alternative driver amplifiers. Input routing is controlled by solder links BIN1A+/BIN1A− (through driver), BIN1B+/BIN1B− (bypass driver), or BIN1C+/BIN1C− (mezzanine path). Common-mode voltage defaults to 2.5 V (buffered), and reference is fixed at 4.096 V from the ADR4540.

Can custom digital filters be loaded onto the AD7768-1 using the EV-AD7768-1FMCZ?

Yes, the EV-AD7768-1FMCZ software includes a dedicated "Upload Filter" function that loads user-defined 56-coefficient FIR filters into the AD7768-1's programmable digital filter engine. Filters must be provided as .csv files matching the exact format of supplied examples (e.g., AD7768-1_Low_Ripple.csv). Upon upload, the software verifies all coefficients against the file; mismatch triggers an error indicator. Custom filters persist only until reset or power cycle-default coefficients reload automatically on boot.