1g Resolution over 15kg Range Sub-100nVpp Noise Front-End Reference Design

(ACTIVE) TIDA-00765

Description & Features

Technical Documents

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Key Document

Description

TIDA-00765 is a less than 100nVpp analog front end for resistive strain gauge bridge load cell-based weight and vibration measurement. It is ideally suited for appliances, which require high-resolution due to large dynamic range or have considerable weight offset. In the face of significant levels of switching supply noise and rapid temperature changes, drift and interference are common issues in harsh environments. The design’s high integration, AC excitation, and robust filtering suppress drift and interference to ensure consistent performance in tough environments.

Features
  • Captures outputs of both multiple and single resistive strain gauge-based load cell bridges simultaneously
  • Consistent <100nVpp low-noise performance
  • <5-μV total error from 0ᵒC to 85ᵒC
  • AC excitation robustly eliminates drift introduced by parasitic thermocouples and other causes
  • Highly robust to >500mVpp 100-kHz switching-supply noise
  • Captures vibrations up to 500 Hz with sample rate ≤2 kSps

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


  




TI Devices (8)

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
ADS1220  24-Bit, 2kSPS, 4-Ch, Low-Power Delta-Sigma ADC with PGA & VREF for Small Signal Sensors  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
CSD13381F4  12V, N-Channel FemtoFET™MOSFET  Power MOSFET  Sample & Buy Not Available
CSD23381F4  12V , P-Channel FemtoFET™MOSFET  Power MOSFET  Sample & Buy Not Available
LMT01  0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface  Temperature Sensors  Sample & Buy View Design Kits & Evaluation Modules
LP5907  250mA Ultralow-Noise Low-IQ LDO  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
MSP430G2553  MSP430G2x53, MSP430G2x13 Mixed Signal Microcontroller  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
TPD4E1U06  Quad-Channel High-Speed ESD Protection Device  Circuit Protection  Sample & Buy View Design Kits & Evaluation Modules
TS5A21366  0.75-Ohm Dual SPST Analog Switch with 1.8-V compatible input logic  Switches and Multiplexers  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

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

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2475 14 Jun 2016 479
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 3319 01 Apr 2016 52
ZIP 434 01 Apr 2016 63
PDF 1764 01 Apr 2016 36
PDF 250 01 Apr 2016 32
PDF 63 01 Apr 2016 42
PDF 690 01 Apr 2016 173
Related Tools & Software

Reference Designs (1)

Design Kits & Evaluation Modules (2)

Name Part Number Tool Type
ADS1220 Evaluation Module  ADS1220EVM  Evaluation Modules & Boards 
MSP430 LaunchPad Value Line Development kit  MSP-EXP430G2  Evaluation Modules & Boards 

Software (1)




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