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Описание:
This reference design is for a complete body weight scale end equipment with body composition capability featuring TI signal chain, power, and connectivity components. With TI's AFE4300 weigh scale/body composition AFE, you can accelerate your body weight scale design or quickly add body composition measurement features to your existing platform. This reference design also includes the full BLE connectivity design for easy interface to BLE enabled smartphones, tablets, etc.

Возможности:

Features AFE4300 for both bio-impedance body composition measurement as well as weight measurement MSP430F5528 microcontroller for holding calibration data and computing weight, TBW, ECW, and body composition analysis BLE module connection featuring TI's CC2541 This design is tested and provides everything you need to complete your design including Schematics, Layout and Gerber files, and BOM.

Документация:
  • Даташит
  • Схемотехника
  • BOM
  • Тестирование
Описание:
Using the LMH6629 and OPA684 op amps, this reference design deals with the difficulties and limitations of developing very high gain, multistage amplifier circuits. Supported by a full scale application report including theory, simulations, board design and evaluation, this design can be easily adjusted for a given application.

Возможности:

High Voltage Gain - up to 120,000 V/V High Bandwidth - Flat Band 100 kHz - 4 MHz @ 120,000 V/V Low Supply Operation (+/-2.5 V) Low Component Count This reference design has been lab tested and is supported with design files and an application report

Документация:
  • Даташит
  • Схемотехника
  • BOM
  • Тестирование
Описание:
Operational amplifiers (op amps) have been used for decades in signal conditioning circuits and measurement systems. An op amp that has an output spanning from negative to positive supply rail are generally referred to as rail-to-rail output (RRO) op amps. These devices have been used increasingly in portable systems to drive analog to digital converters (ADCs) where reducing power consumption while not sacrificing converter dynamic range is a key concern. While the task calls for the lowest power RRO op amps, circuit designers are finding out that rail-to-rail doesn’t exactly mean rail-to-rail. In reality the output is limited to a couple hundred millivolts within the rail depending on the loading. This problem is known as headroom and is the result of the RRO architecture. This application report focuses on using a low power RRO fully differential op amp (THS4531A) and low noise negative bias generator (LM7705) to achieve true zero volts in a ground referenced single supply system.

Возможности:

Single supply +3V to +5V Extends Differential Amplifier Output to Include 0V Low Noise (Approx 100dB SNR) Low Power (2mW @ 5V) 36MHz of Bandwidth This reference design has been lab tested and is supported with design files and an application report

Документация:
  • Даташит
  • Схемотехника
  • BOM
  • Топология платы
Описание:
The Distanceand Weight Measurement Using Inductive Sensing Reference Design is a sub-system design which converts a distance measurement to a weight measurement. This design is intended as a reference design for building automation and weigh scale applications. In mechanical systems, there are many situations that require precise and accurate measurements of distance. One such scenario is the conversion of a distance measurement to a weight measurement, through the use of springs with well-known characteristics. This reference design enables weight and distance measurements to be incorporated into end systems, without the use of expensive magnets or other sensing materials.

Возможности:

Sensor coil input customized for mechanical system from WEBENCH® Inductive Sensing Designer Calibrated sensor output from microcontroller Low power consumption of 37.8 mW Output resolution: 2 g Typical System Error: 4.2 g (600 g to 650 g) IEC61000-4-2: ESD: Air Discharge: ±8 kV Class A IEC61000-4-4: EFT ±2 kV Class A

Документация:
  • Даташит
  • Схемотехника
  • BOM
  • Топология платы
Описание:
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.
Возможности:

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 0бµ’C to 85бµ’C AC excitation robustly eliminates drift introduced by parasitic thermocouples and othercauses Highly robust to >500mVpp 100-kHz switching-supply noise Captures vibrations up to 500 Hz with sample rate ≤2 kSps

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Документация:
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Описание:
The Internet of Things (IoT) revolution is efficiently connecting applications and instruments, enabling battery powered, wide scale very low power sensor deployment. New technologies, such as TI’s advanced sensor and low power connectivity devices, are enabling these instruments to be designed as battery powered wireless systems dramatically improving cost, deployment, reliability, performance and complexity. Enabled by Texas Instruments’ SimpleLink™ ultra-low power wireless micro-controller (MCU) platform, the TIDA-01014 reference design utilizes the TIDA-01012 wireless DMM reference design to demonstrate how the bq27426 can be used to enhance the battery management system’s fuel gauge performance and ultimately optimize consumption. The TIDA-01014 features a wirelessly connected, 4½ Digit, 100kHz true RMS, DMM with Bluetooth Low Energy® (BLE) connectivity, NFC Bluetooth pairing, and an Automatic Wake-Up feature enabled by TI’s CapTIvateTM technology.

Возможности:

Wireless MCU enabling Bluetooth low energy (BLE) for IoT wireless Low power design and power management systems Battery discharge monitoring Increased fuel gauge accuracy and resolution

Документация:
  • Даташит
  • Схемотехника
  • BOM
Описание:

Посредством данного базового проекта точно измеряется сопротивление тензометрического датчика путём помещения его в мостовую схему. Дифференциальное напряжение моста, появляющееся в результате изменения сопротивления тензометрического датчика, усиливается с помощью INA333. Напряжение возбуждения моста и опорное напряжение INA333 подаётся с REF5025.

Возможности:

  • Измеренная некалиброванная ошибка: 0,953 %
  • Измеренная калиброванная ошибка: 0,0154 %
  • Единственное напряжение питания 5 В
  • Выход: от 225 мВ до 4,72 В
  • Опорное напряжение 2,5 В
  • Данный базовый проект тензометрического датчика включает в себя теоретический материал, полный анализ ошибок и подбора компонентов, симуляции, дизайн печатной платы и данные измерений, которые коррелируют с теорией, вычислениями и симуляцией

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Документация:
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Описание:

Данный базовый проект прецизионных весов обеспечивает разрешение, превышающее 50000 отсчётов без шумов. Ошибки смещения и дрейфа смещения практически сведены к нулю благодаря возбуждению AC-моста. Данный проект получил все преимущества дельта-сигма АЦП с высоким разрешением ADS1262.

Возможности:

  • Решение для весов с разрешением, превышающим 50000 отсчётов без шумов
  • Диапазон рабочих температур: от -40 C до +125 C
  • Уровень суммарной ошибки менее 1 мкВ во всём температурном диапазоне
  • Напряжения питания АЦП и возбуждения моста: 5 В
  • Выходное напряжение моста: от 0 до 10 мВ
  • Программное обеспечение включает в себя пример кода для ADS1262
  • Надёжный базовый проект включает в себя теоретический материал, полный анализ ошибок и подбора компонентов, результаты симуляции, файлы печатной платы, пример кода и полученные на практике данные, коррелирующие с теорией и симуляцией.

Документация:
  • Даташит
  • Схемотехника
  • BOM