Dual Channel Data Acquisition System for Optical Encoders, 12 Bit, 1MSPS

(ACTIVE) TIPD117

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Key Document

Description

This TI Precision Verified Design provides the theory, component selection, simulation, PCB design, and measurement details for a 12-bit 1-MSPS single supply dual channel simultaneous data acquisition system. This circuit achieves 73 dB SINAD for a 4.5 V differential signal at 2 KHz input frequency. Differential input may have a wide range of common mode voltage. Circuit includes a low impedence buffer, low pass RC filter and 12 bit, Dual, Simultaneous Sampling SAR ADC with internal reference voltage source.

Features
  • 12-Bit, 2-Channel, Simultaneous Data Acquisition at 1-MSPS Throughput
  • 72dB SNR, 85dB THD, 71.5dB SINAD AC Performance
  • ±4.5 V Differential Input Voltage Signal
  • Alternate component choices with measured results shown for 16-bit and 14-bit performance upgrade

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (5)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS7254  SAR ADC, Dual, 1 MSPS, 12 Bit, Simultaneous Sampling  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS7854  SAR ADC, Dual, 1 MSPS, 14 Bit, Simultaneous Sampling  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
ADS8354  SAR ADC, Dual, 700 kSPS, 16 Bit, Simultaneous Sampling  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
THS4521  Very low power rail-to-rail output fully differential amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
THS4531  Ultra low power 0.25mA, RRO, fully differential amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Application notes (1)
Title Abstract Type Size (KB) Date Views
PDF 716 11 Apr 2014 166
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1380 06 Jun 2013 119
Design files (3)
Title Abstract Type Size (KB) Date Views
PDF 57 22 Oct 2013 46
PDF 71 22 Oct 2013 124
ZIP 306 17 Jul 2013 76
Related Tools & Software

Software (2)



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