IC manufacturers Texas Instruments

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Texas Instruments OPA835 | Demoboard TIPD168

Three 12-Bit Data Acquisition Reference Designs Optimized for Low Power and Ultra-Small Form Factor

Overview

TopologyBoost Converter

Description

This Verified Precision Design details the design procedure, simulated results, and showcases the actual performance of a 12-bit discrete data acquisition block using the ADS7042, optimized for extremely low power, small form factor applications for the following three different optimizations:

Optimization #1: 12 bit, 500ksps optimized for current monitoring, battery monitoring, electromyography (EMG), skin impedance, and wearable fitness

Optimization #2: 12 bit, 1Msps optimized for hard disc drives, motor control, motor encoders, optical encoders, and optical modules

Optimization #3: 12 bit, < 1ksps optimized for tilt, gyro, pressure, temperature, gas, chemical, blood glucose, low voltage (1.8V-3.3V, JESD8-7A), and DC sensor measurements

Features

  • Covers three different detailed implementations optimized for speed/power/performance
  • Contains Theory, Component Selection, Simulation, Schematic, PCB Layout, and Measured Performance Results for all three implementations
  • Includes detailed theory, calculations, and simulations of ADC drive circuitry
  • Demonstrated performance of ultra-low power (1mW) 12-bit SAR data acqusition
  • Features the ADS7042: the world's smallest 12-bit SAR ADC

Products

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Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IR(A)
ISAT(A)
fres(MHz)
Mount
SamplesAvailability & Sample
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SPECWE-TPC SMT Tiny Power Inductor, 1 µH, 2.2 A
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance1 µH
Rated Current2.2 A
Saturation Current1.6 A
Self Resonant Frequency150 MHz
MountSMT 
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