Analog Devices Inc. EVAL-AD7667CBZ

Overview

EVAL-AD7667CBZ from Analog Devices is an evaluation board designed for the AD7667 - a 16-bit, 1 MSPS PulSAR® successive approximation register (SAR) analog-to-digital converter with single-ended unipolar input (0 to 2.5 V), on-chip reference buffer, and parallel/serial interface. It supports stand-alone operation or integration with EVAL-CED1Z or EVAL-CONTRL BRDxZ capture boards for rapid ADC performance validation in precision data acquisition systems.

For engineers reviewing the EVAL-AD7667CBZ datasheet, EVAL-AD7667CBZ pinout, EVAL-AD7667CBZ application, or EVAL-AD7667CBZ equivalent, this page delivers verified hardware configuration options, supported ADC interface modes (parallel 16-bit buffered output, serial slave/master), analog input conditioning flexibility (±12 V op-amp supplies, jumper-selectable reference source), and software-controlled test capabilities including histogram, FFT, and decimated AC analysis.

Technical Context

The EVAL-AD7667CBZ implements a 4-layer PCB layout with separated analog/digital ground planes connected under the ADC to minimize noise coupling. It uses a gate array (U10) to generate CNVST, manage BUSY timing, and buffer BD[0:15] outputs - supporting both continuous parallel read mode (CS/RD held low) and serial slave mode where SCLK = MCLK (40 MHz oscillator U12).

Analog signal conditioning includes dual op-amps (U6/U7), configurable gain and offset via solder pads and jumpers (JP1–JP2, JP3, JP7–JP8), and selectable input ranges (0 to 2.5 V default for AD7667). On-board references include AD780, ADR431, or ADR435 with optional buffering (JP20), and power is supplied via SJ1 (analog) and SJ2 (digital) blocks with linear supply recommendations.

Key Specifications

Availability

EVAL-AD7667CBZ 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-AD7667CBZ 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 (DSP) technologies for precision measurement and control applications.

The EVAL-AD7667CBZ belongs to Analog Devices' PulSAR® evaluation platform family, engineered to accelerate development of high-speed, high-accuracy data acquisition systems using their 14-/16-/18-bit SAR ADCs.

FAQ

What ADC devices does the EVAL-AD7667CBZ specifically support?

The EVAL-AD7667CBZ is validated for the AD7667 - a 16-bit, 1 MSPS, single-ended unipolar SAR ADC with 0 to 2.5 V input range. While the board is part of the broader EVAL-AD76XXCBZ family covering multiple AD76xx devices, its hardware configuration (jumper defaults, analog input scaling, and reference setup) is optimized for AD7667 operation per the preliminary technical data and ordering guide. Other compatible parts like AD7660/AD7661/AD7666 share the same 48-lead package and interface but require manual reconfiguration for full functionality.

Does the EVAL-AD7667CBZ require a host capture board to operate?

No - the EVAL-AD7667CBZ supports fully stand-alone operation. When CONTROL input to the gate array (U10) is pulled LOW (default), it autonomously generates CNVST, manages BUSY timing, and buffers BD[0:15] output continuously on P2. No EVAL-CED1Z or EVAL-CONTRL BRDxZ board is needed for basic DC histogram or AC FFT testing, though those capture boards enable PC-based software control and advanced analysis features.

What are the power supply requirements for stand-alone use of the EVAL-AD7667CBZ?

For stand-alone operation, the EVAL-AD7667CBZ requires two independent linear power sources: ±12 V applied to SJ1 (analog section, powering AVDD, op-amps, and reference) and +5 V applied to SJ2 (digital section, powering DVDD, OVDD, and gate array U10). JP9 must be set to VDIG, JP6 to 3.3 V, and JP19 to +5 V. R27 (20 Ω) is required between AVDD and DVDD if sharing a common +5 V rail, per design guidelines in the preliminary technical data.

How is analog input configured for the AD7667 on the EVAL-AD7667CBZ?

The EVAL-AD7667CBZ configures the AD7667 for 0 to 2.5 V unipolar input by default using unity-gain op-amp buffers (U6/U7) powered from ±12 V (JP3/JP8 = –12V/+12V). JP1/JP2 are set to BUFF, and JP4 selects on-board reference (REF). Input is applied via SMB connectors J1 (IN+) and J2 (IN–), with C26/C41 providing anti-alias filtering. Bipolar or alternate ranges require hardware modification per AN594 and device-specific datasheet guidance.

Which software tools are compatible with the EVAL-AD7667CBZ?

The EVAL-AD7667CBZ is supported by Analog Devices' AD76xx Evaluation Software (CED and ECB versions), located in "C:\Program Files\Analog Devices\Hi-Res ADC's" after installation. The CED version supports USB-connected EVAL-CED1Z, while the ECB version works with parallel-port-based EVAL-CONTROL-BRDX boards. Both provide histogram (DC noise), FFT (SNR/SINAD/THD/SFDR), and decimated AC analysis - with decimation requiring EVAL-CONTROL-BRD3 per documentation.