TIDA-00765 Reference Design

Texas Instruments

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

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 simultaneouslyConsistent AC excitation robustly eliminates drift introduced by parasitic thermocouples and other causesHighly robust to >500mVpp 100-kHz switching-supply noiseCaptures vibrations up to 500 Hz with sample rate ≤2 kSps
Applications
  • Process Analytics (pH
  • Gas
  • Concentration
  • Force & Humidity)
  • Lab & field Instrumentation
  • Oven
  • Mixer
  • blender & food processor
  • Mobile robot CPU board
  • Cooking top
  • CT & PET scanner
  • Weigh scale
  • X-ray systems
Product Categories
  • Data converters

Parts

Part Number Name Companion Part
ADS1220 ADS1220 Buy Datasheet
LP5907 LP5907 Buy Datasheet
MSP430G2553 MSP430G2553 Buy Datasheet
TPD4E1U06 TPD4E1U06 Buy Datasheet
TS5A21366 TS5A21366 Buy Datasheet

Software

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00765 Design File 01 Apr 2016 ZIP 3319
TIDA-00765 Gerber 01 Apr 2016 ZIP 434
TIDA-00765 PCB 01 Apr 2016 PDF 1764
TIDA-00765 Assembly Drawing 01 Apr 2016 PDF 250
TIDA-00765 BOM 01 Apr 2016 PDF 63
TIDA-00765 Schematic 01 Apr 2016 PDF 690