Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs

(ACTIVE) TIPD154

Description & Features

Technical Documents

Support & Training

Order Now


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Key Document

Description

This TI Precision Verified Design provides the theory, component selection, and simulation for a single-supply, low-power signal conditioning circuit designed to translate a +/-5 V input signal to the proper input range of a single-supply low-power 16-Bit ΔΣ ADC such as the one inside the MSP430 or other similar single-supply ADCs.  A zero-drift op amp was selected to provide excellent dc performance in the attenuation and level-shifting circuit.  Two low-power reference circuits are used to provide power, the ADC reference voltage, and biasing to the input conditioning circuit.

Features

• TI Precision Designs: Verified Design Contains Theory, Component Selection, TINA-TI Simulation
• Conditions a +/-5V signal input signal for a 1.25V ADC
• Total operational current < 100 μA
• Single-Supply Solution


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

Get results faster with test and simulation data that's been verified.

Download Test Data

Design Files

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

Download Design Files


TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA317  Low Offset, Rail-to-Rail I/O Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
REF3312  30ppm/°C Drift, 3.9µA, SOT23-3, SC70-3, UQFN-8 Voltage Reference  Voltage references  Sample & Buy Not Available
REF3330  30ppm/°C Drift, 3.9µA, SOT23-3, SC70-3, UQFN-8 Series Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA317 Download
Download
Download
REF3312 Download Download
Download Download
Download Download
REF3330 Download Download
Download Download
Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date
PDF 1428 06 Mar 2014
Design files (3)
Title Abstract Type Size (KB) Date
ZIP 322 10 Jul 2014
PDF 90 10 Jul 2014
PDF 86 10 Jul 2014
Related Tools & Software

Software (3)



Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective 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 visit our Support page.

Blogs