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


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.

  • 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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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DAC8760  16-Bit Single-Channel Programmable Current/Voltage Output DAC for 4-20mA current loop applications  Digital-to-analog converters (DACs)  Sample & Buy View Design Kits & Evaluation Modules
MUX36S08  1-pA on-state leakage current, 36-V, 8:1, 1-channel precision analog multiplexer  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
OPA188  Precision, Low-Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
XTR111  Voltage-to-current converter/transmitter with 3-V to 15-V regulator and resistor set I/O ratio  Special function amplifiers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DAC8760 Download Download
Download Download
MUX36S08 Download
OPA188 Download Download
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XTR111 Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 3671 18 Apr 2016
Design files (7)
Title Type Size (KB) Date
ZIP 439 23 Mar 2016
ZIP 1025 23 Mar 2016
PDF 2117 23 Mar 2016
PDF 2472 23 Mar 2016
PDF 257 23 Mar 2016
PDF 63 23 Mar 2016
PDF 680 23 Mar 2016

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