TIPD188 Reference Design

Texas Instruments

High-Resolution: Low-Drift: Precision Weigh-Scale Reference Design with AC Bridge Excitation

Description

This precision weigh-scale reference design achieves greater than 50:000 noise-free counts of resolution. Offset and offset drift errors are nearly eliminated by ac bridge excitation. This design takes advantage of the high-resolution ADS1262 delta-sigma ADC.

Features
  • >50:000 noise-free count weigh-scale solution Operating temperature range: -40 ᵒC to +125 ᵒC Less than 1 μV total error across temperature range ADC Supply and Bridge Excitation Voltage: 5V Bridge Output: 0 V to 10 mV Firmware provides ADS1262 example code This robust circuit reference design includes theory: complete error analysis: component selection: simulation: PCB design: example code: and measured data that correlates with the theory and simulation.
Applications
  • Spectrometer
  • Mobile robot CPU board
  • CT & PET scanner
  • Weigh scale
  • X-ray systems
Product Categories
  • Data converters

Parts

Part Number Name Companion Part
MSP430F5529 MSP430F5529 Buy Datasheet
TS5A21366 TS5A21366 Buy Datasheet

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)
TIPD188 BOM 20 Jul 2015 PDF 193
TIPD188 Schematic 20 Jul 2015 PDF 176