Introduction
The AD7476A/AD7477A are high speed, 12-bit and 10-bit, low power, successive-approximation ADCs respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS.
The EVAL-AD7476ACB and the EVAL-AD7477ACB can be used to evaluate the AD7476A and the AD7477A respectively. Accompanying each evaluation kit is the AD7476A/77ACB 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 AD7476A/AD7477A. Full details on the AD7476A/AD7477A are also available in the AD7476A/AD7477A datasheet (which can be downloaded from the AD7476A or AD7477A Product Pages) 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, the AD713 quad op-amp used to buffer the analog inputs and the REF195 precision bandgap voltage reference providing a 5 V reference voltage. There are various link options which are explained in detail on page 2.
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 the AIN input, the VIN input and the VBIASED input.
Software
Included in the EVAL-AD7476ACB and EVAL-AD7477ACB evaluation board package is software for controlling and evaluating the performance of the AD7476A and AD7477A when it is operated with the EVALUATION BOARD CONTROLLER. The EVAL-AD7476A/77ACB Demonstration/Evaluation Software runs under Windows 95, 98, 2000 and NT. The user interface on the PC is via a dedicated program written especially for the EVAL-AD7476ACB and EVAL-AD7477ACB.
