Home
Design & development
Reference designs

TIPD168

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

Design files

TIPD168

Design files

Overview

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
??image.gallery.download_en_US?? View video with transcript Video

Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Schematic — TIPD168
TIDC606.ZIP (3506 K)

Detailed schematic diagram for design layout and components

download Schematic — TIPD168
TIDRAD7.PDF (104 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIPD168
TIDRAD8.PDF (93 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

download Gerber file — TIPD168
TIDC604.ZIP (3361 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

Precision ADCs

ADS7042 — 12-Bit 1MSPS Ultra-Low-Power Ultra-Small-Size SAR ADC With SPI Interface

Data sheet: PDF | HTML
High-speed op amps (GBW ≥ 50 MHz)

OPA835 — Ultra Low Power, Rail to Rail Out, Negative Rail In, VFB Amplifier

Data sheet: PDF | HTML

Start development

Hardware

Evaluation board

ADS7042EVM-PDK — ADS7042 Ultra-Low-Power Ultra-Small-Size 12-Bit 1MSPS SAR ADC Performance Demonstration Kit (PDK)

The ADS7042 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the 12-bit, ADS7042 successive approximation register (SAR) analog-to-digital converter (ADC).

The PDK includes the ADS7042 evaluation board, precision host interface (PHI) controller board, and (...)

User guide: PDF | HTML
Log in to order
lock Log in to view inventory
In stock / Out of stock
Limit: This limit is in place to protect sample purchases for design evaluation and will be removed once more stock is available.
Not available on TI.com
TI’s Standard Terms and Conditions for Evaluation Items apply.

Software

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* User guide Three 12-Bit Data Acquisition Reference Designs Optimized for Low Power Jun. 11, 2014
Technical article How low can you go? How to reduce power consumption in data-acquisition systems May 27, 2016

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos
Disclaimer
See the important notice and disclaimer covering reference designs and other TI resources.