AD7656/AD7657/AD7658 EVALUATION TOOLS

Introduction

The AD7656/AD7657/AD7658 contain six 16-bit, fast, low power, successive approximation ADCs all in the one package. The AD7656/AD7657/AD7658 accept True bipolar analog input signals, ±10V and ±5V. The AD7656/AD7657/AD7658 have high speed parallel, serial and Daisy Chain Interface modes.

The EVAL-AD7656/AD7657/AD7658CB can be used to evaluate the AD7656, AD7657 and the AD7658. Accompanying the evaluation kit is the AD7656/AD7657/AD7658 evaluation board and a CD-ROM containing a Technical Note, the datasheet and a description for the Evaluation Board Controller. The Technical Note describes the evaluation board for the AD7656/AD7657/AD7658. Full details on the AD7656/AD7657/AD7658 are also available in the AD7656/AD7657/AD7658 datasheet (which can be downloaded from the AD7656/AD7657/AD7658 Product Page) and this should be consulted in conjunction with this Technical Note when using the Evaluation Board.

On-board components include an AD780, which is a pin programmable +2.5 V or +3 V ultra high precision bandgap reference, and six AD797 high precision op-amps.

Interfacing to this board is through a 96-Way connector. This 96-Way connector is compatible with the evaluation board controller (EVAL-CONTROL BRD2), which is also available from Analog Devices. External sockets are provided for a number of signals. The evaluation board controller is powered from a 12 V AC transformer. Suitable transformers are available from Analog Devices as an accessory under the following part numbers:

Documentation

Technical notes are available in Adobe Acrobat Portable Document Format (PDF). To download the Technical Note, select the link below. The AD7657 or AD7658 evaluation board use the same hardware and software as decribed in the AD7656 evaluation board tech note. EVAL-AD7656/AD7657/AD7658 Technical Note (pdf, 1015 KB)

Software

Included in the AD7656/AD7657/AD7658CB evaluation board package is software for controlling and evaluating the performance of the AD7656/AD7657/AD7658, when they are operated with the evaluation board controller. The EVAL-AD7656/AD7657/AD7658CB Demonstration/Evaluation Software runs under Windows 95, 98, 2000, XP and NT. The user interface on the PC is via a dedicated program written especially for the EVAL-AD7656/AD7657/AD7658CB.