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


Design files


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.

  • 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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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.

TIDC266.ZIP (1942 K)

Detailed schematic diagram for design layout and components

TIDR385.PDF (451 K)

Detailed schematic diagram for design layout and components

TIDR386.ZIP (28 K)

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

TIDC265.ZIP (802 K)

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

TIDU211.PDF (998 K)

PCB layer plot file used for generating PCB design layout


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Technical documentation

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Type Title Date
* User guide 12-Bit 4/8 Channel Integrated Analog Input Module for PLCs Design Guide Jan. 10, 2014

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