Analog Devices Inc. EVAL-AD7671CBZ

Overview

EVAL-AD7671CBZ from Analog Devices is an evaluation board designed for the AD7671 - a 16-bit, 1 MSPS single-ended bipolar SAR ADC with ±5 V input range. It provides buffered parallel (16-bit) and serial interfaces, on-board precision reference (ADR431/AD780), clock oscillator, analog signal conditioning, and DSP/data acquisition card compatibility. The board supports stand-alone operation or integration with EVAL-CED1Z or EVAL-CONTRL BRDxZ capture boards for high-fidelity ADC characterization.

For engineers reviewing the EVAL-AD7671CBZ datasheet, EVAL-AD7671CBZ pinout, EVAL-AD7671CBZ application, or EVAL-AD7671CBZ equivalent, this page delivers verified technical context, interface configuration options, power supply routing guidance, software-supported test modes (histogram, FFT, decimation), and hardware-level setup details for accurate ADC performance validation in precision data acquisition systems.

Technical Context

The EVAL-AD7671CBZ implements a flexible gate array (U10) to generate CNVST, manage BUSY signaling, and buffer conversion data for both parallel and serial readout. It supports configurable analog input scaling via op-amps U6/U7 and selectable ±12 V / ±5 V / +5 V supplies through jumpers JP3, JP7, JP8, and JP19.

On-board timing includes a 40 MHz local oscillator (U12) for master clock generation, with CNVST derived as a ratio of MCLK - enabling precise control over sampling rate (up to 1 MSPS for AD7671). Buffered BD[0:15] output is available on a 40-pin IDC connector (P2), while serial signals (SDOUT, SCLK, SYNC) are accessible at test points TP17–TP19 and SMB headers T3–T6.

Key Specifications

Availability

EVAL-AD7671CBZ is available at Aetrix Electronics and suitable for precision data acquisition, industrial instrumentation, and high-resolution test equipment requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for EVAL-AD7671CBZ 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-AD7671CBZ belongs to Analog Devices' PulSAR® evaluation platform family, engineered specifically to accelerate development and validation of high-speed, high-accuracy SAR ADCs used in precision measurement and scientific instrumentation.

FAQ

What is the primary function of the EVAL-AD7671CBZ?

The EVAL-AD7671CBZ is an evaluation board purpose-built to characterize and validate the AD7671 - a 16-bit, 1 MSPS, single-ended bipolar SAR ADC. It provides full hardware and software support for DC (histogram), AC (FFT), and decimated performance testing, with configurable analog front-end, reference, clocking, and parallel/serial interfaces. EVAL-AD7671CBZ enables rapid prototyping and system-level integration verification without custom PCB design.

Which ADC models does the EVAL-AD7671CBZ support besides the AD7671?

The EVAL-AD7671CBZ supports the entire AD761X, AD762X, AD763X, AD764X, AD765X, AD766X, AD767X, and AD795X 48-lead PulSAR® ADC family - including AD7671, AD7663, AD7665, AD7631, AD7610, and AD7951. All share compatible pinouts, interface logic, and board-level configuration options, though analog input range and power settings must be adjusted per device per Table 1 and jumper settings in the preliminary technical data.

Can the EVAL-AD7671CBZ operate without a host capture board?

Yes, the EVAL-AD7671CBZ supports stand-alone operation using its onboard gate array (U10) to generate CNVST and manage data buffering. In this mode, conversion is triggered internally, and buffered 16-bit parallel output (BD[0:15]) is continuously available on P2 after BUSY goes HIGH. No EVAL-CED1Z or EVAL-CONTRL BRDxZ is required, and configuration is controlled via S16/S35 DIP switches and jumpers like JP22 (CNVST source) and JP4 (reference selection).

How is analog input configured for the AD7671 on the EVAL-AD7671CBZ?

The EVAL-AD7671CBZ is factory configured for ±5 V bipolar input - matching the AD7671's native range - using internal voltage dividers and op-amp buffers (U6/U7). Jumper JP1/JP2 selects buffered vs. direct input, JP3/JP7/JP8 set analog supply rails (±12 V typical), and JP20 configures reference buffering. For alternate ranges (e.g., ±10 V), hardware modifications to INA-/IND paths via solder pads are required, as documented in AN594 and the AD7671 datasheet.

What software tools are compatible with the EVAL-AD7671CBZ?

The EVAL-AD7671CBZ is supported by two official Analog Devices software packages: "AD76xx Evaluation Software CED" (for use with EVAL-CED1Z) and "AD76xx Evaluation Software ECB" (for EVAL-CONTROL-BRDXZ). Both provide histogram, FFT, and decimation analysis, with GUI-driven control of conversion mode, data format (binary/2's complement), and interface selection. Software installs on Windows 2000/XP and requires USB 2.0 (CED) or parallel port (ECB); drivers and setup files ship with the board or are downloadable from analog.com.