ALAMEDA (MAXREFDES24#): 4-channel analog output

The Alameda (MAXREFDES24#) reference design provides a scalable solution for multi-channel analog output modules. The configurable 4-channel design produces all typical bipolar current and voltage outputs up to 24mA/12V with a typical total unadjustable error (TUE) of less than ±0.1%. Integrated power and cable fault detection provides users with the diagnostic capabilities necessary for reliable industrial control applications.

The buffered MAX5134 quad-channel, 16-bit/analog converter (DAC) generates the low-voltage signal that drives the inputs of four MAX15500 signal conditioners (output drivers). Both devices communicate with the host over an isolated SPI bus and can be connected in a daisy chain for designs requiring higher channel counts. The MAX6126 generates a high-precision voltage reference for circuits to achieve optimal performance under a variety of environmental conditions. The design also integrates an isolated power supply circuit with a wide DC input range using the MAX17498B peak-current mode flyback controller.

The board is designed to be compact and pluggable, allowing easy evaluation with a PC (using the MAXREFDES24EVSYS Design Accelerator Kit) or development using LX9 or ZedBoard Xilinx-based platforms. Please see the Details tab for more information and performance data . Design files and firmware can be downloaded from the Design Resources tab.

• MAXREFDES24EVSYS User Manual

• LX9 Quick Start Guide

• ZedBoard Quick Start Guide

characteristic

• Programmable high-precision current/voltage output

• Current output drives up to 1kΩ

• Voltage output drives loads as low as 1kΩ

• Complete error reporting

• Isolate power and data

• Device driver

• C language source code example

• Compatible with Pmod ^™ specifications

Competitive Advantage

• flexibility

• system security

• Small solution size

application

• PLC

• DCS

• Distributed I/O

• Industrial control and automation