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TIPD154

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

Design files

TIPD154

Design files

Overview

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
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

download Bill of materials (BOM) — TIPD154
TIDR878.PDF (91 KB)

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

download Gerber file — TIPD154
TIDC509.ZIP (323 KB)

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

download Schematic — TIPD154
TIDC309.ZIP (467 KB)

Detailed schematic diagram for design layout and components

download Schematic — TIPD154
TIDR877.PDF (86 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Series voltage references

REF3312 — 1.25-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA317 — Low Offset, Rail-to-Rail I/O Operational Amplifier

Data sheet: PDF | HTML
Series voltage references

REF3330 — 30-ppm/°C drift, 3.9µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN series voltage reference

Data sheet: PDF | HTML

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Software

Support software

TIDC015 — TIPD154 Simulation

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIPD154 — Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs
Download options

TIDC015 — TIPD154 Simulation

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Version: 01.00.00.00
Release date: Jul 9, 2014
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TIPD154 Simulation (zip)  — 45 K

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Hardware development
Reference design
TIPD154 — Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs

Release Information

The design resource accessed as www.ti.com/lit/zip/tidc015 or www.ti.com/lit/xx/tidc015/tidc015.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDC015. Please update any bookmarks accordingly.
Support software

TIDC510 — TIPD154 Test Files

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIPD154 — Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs
Download options

TIDC510 — TIPD154 Test Files

close
Latest version
Version: 01.00.00.00
Release date: Jul 9, 2014
open-in-new

View all versions

download

TIPD154 Test Files (zip)  — 19 K

SHA-256 checksum
Hardware development
Reference design
TIPD154 — Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs

Release Information

The design resource accessed as www.ti.com/lit/zip/tidc510 or www.ti.com/lit/xx/tidc510/tidc510.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDC510. Please update any bookmarks accordingly.

Technical documentation

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Type Title Date
User guide Low-Power Reference and Bipolar Voltage Conditioning Circuit for Low-Power ADCs Mar 6, 2014

Related design resources

Design tools & simulation

SIMULATION TOOL
TINA-TI — SPICE-based analog simulation program

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