TIDA-00760

Multi-Channel Analog Output Module With Multiplexed Single-Channel DAC for PLCs Reference Design

TIDA-00760

Design files

Overview

This reference design helps achieve low-cost, high-speed, small form-factor and high resolution for programmable logic controller (PLC) analog output module designs based on sequentially multiplexed sample and hold buffers.

Features
  • Multiplexed 8 output channels module: 4 channels voltage output; 4 channels current output
  • Single 16 bit DAC (DAC8760)
  • Effective resolution: voltage output 15 bit; current output 14 bit
  • Configurable output range:  voltage output: ±10V, 0-10V, ±5V, 0-5V; current output: 0-20mA, 4-20mA, 0-24mA
  • Uncalibrated output accuracy: ±0.2% FS @ 25 °C;  ±0.5% FS over -40°C to 85°C Battery Voltage Monitor
  • Scan time: 6ms for 8 channels (conversion time: 750 μs/channel)
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUBL9A.PDF (3671 K)

Reference design overview and verified performance test data

TIDRKX2.PDF (680 K)

Detailed schematic diagram for design layout and components

TIDRKX3.PDF (63 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRKX4.PDF (257 K)

Detailed overview of design layout for component placement

TIDRKX7.ZIP (1025 K)

Files used for 3D models or 2D drawings of IC components

TIDCBY5.ZIP (439 K)

Design file that contains information on physical board layer of design PCB

TIDRKX5.PDF (2472 K)

PCB layer plot file used for generating PCB design layout

TIDRKX6.PDF (2117 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Precision DACs (≤10 MSPS)

DAC876016-Bit Single-Channel Programmable Current/Voltage Output DAC for 4-20mA current loop applications

Data sheet: PDF | HTML
4-20mA signal conditioners

XTR111Voltage-to-current converter/transmitter with 3-V to 15-V regulator and resistor set I/O ratio

Data sheet: PDF
Analog switches & muxes

MUX36S081-pA on-state leakage current, 36-V, 8:1, 1-channel precision analog multiplexer

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA188Precision, Low-Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier

Data sheet: PDF | HTML

Technical documentation

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* Design guide Multi-Channel Analog Output Module Multiplexed Single Channel ADC Design Guide (Rev. A) Apr. 18, 2016

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