12-Bit, 8 Channel, Integrated Analog Input module for Programmable Logic Controllers (PLC)
TIDA-00119
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Key Document

Description

TIDA-00119  is a complete, highly-integrated PLC analog input module front-end reference design that is designed and tested to meet IEC61000-4 standards for industrial automation systems. The design can be configured for 4 differential inputs or 8 single-ended inputs with 12-bit ADC resolution and a sample rate of up to 1MSPS. These inputs can also be programmed to take current or voltage inputs with selectable ranges. The design also includes an isolated power supply providing all necessary module voltages, input surge and ESD protection and an isolated digital data interface that can be connected to any microcontroller, FPGA or ASIC via SPI interface. Full documentation, test results, design files and necessary firmware are  available to help reduce time to market.

Features
  • Designed to comply with IEC61000-4 standards for ESD, EFT and Surge
  • Up to 8 channels user programmable inputs and configurable over-range capability of 20%
  • Four Voltage Inputs: 3 Single ended & 1Differential with impedance > 1M ±10V, ±5V, ±2.5V, 0-10V,0- 5V, Up to ±12V with External Reference
  • Four Current Inputs:  0-20 mA, 4-20 mA (with input impedance of 250Ω)
  • Accuracy over entire input range
  • Voltage: < ±0.2% full scale at 25 °C
  • Current: < ±0.35% full scale at 25 °C
  • On-board isolated Flybuck power supply with inrush current protection

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS8638  12-Bit 8-Channel Bipolar SAR With Software-Selectable Input Ranges  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ISO7141CC  Quad-channel, 3/1, 50-Mbps digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM5017  7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LM5069  9-V to 80-V hot swap controller with power limiting  Power switches  Sample & Buy View Design Kits & Evaluation Modules
OPA4140  Quad, 11MHz, Single Supply, Low Noise, Precision, Rail-to-Rail Output, JFET Amplifier   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF3330  30-ppm/°C drift, 3.9µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN series voltage reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TPS715  50-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7A30  200-mA, low-noise, high-PSRR, negative, adjustable low-dropout voltage regulator with enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS8638 Download Download
ISO7141CC Download Download
LM5017 Download Download
Download Download
LM5069 Download Download
OPA4140 Download Download
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REF3330 Download Download
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TPS715 Download Download
TPS7A30 Download Download
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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 3558 10 Jan 2014
Design files (5)
Title Type Size (KB) Date
ZIP 1942 29 Jan 2014
ZIP 802 29 Jan 2014
PDF 998 29 Jan 2014
ZIP 28 29 Jan 2014
PDF 451 29 Jan 2014
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
Isolated RS-232 to UART Converter Reference Design  TIDA-00163  Reference design 

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