TIPD107

Low-Level V-to-I Converter Reference Design, 0V to 5V input to 0uA to 5uA output

TIPD107

Design files

Overview

This Verified Design is a micro-Amp voltage-to-current (V-I) converter circuit that delivers a precise low level current to a load. The design operates on a single 5V supply and uses a precision low drift op-amp, and instrumentation amplifier. Simple modification can change the range and accuracy of the V-I converter.

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Features
  • Translates Voltage to current: 0 to 5V, 0uA to 5uA
  • Error: 0.3% max uncalibrated, 0.01% max calibrated
  • Single-Supply Solution
  • Utilizes INA326 RRI/O Instrumentation Amplifier
This verified design includes:
  • Theory
  • Component Selection
  • TINA-TI Simulation
  • Verification and Measured Performance
  • Modification Options
Industrial

Design files & products

Design files

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

SLAC577A.ZIP (505 K)

Detailed schematic diagram for design layout and components

TIDR185.PDF (74 K)

Detailed schematic diagram for design layout and components

TIDR207A.PDF (185 K)

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

TIDC144.ZIP (161 K)

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

Products

Includes TI products in the design and potential alternatives.

Instrumentation amplifiers

INA326Precision, Low Drift, CMOS Instrumentation Amplifier

Data sheet document-pdfAcrobat PDF
Precision op amps (Vos<1mV)

OPA3331.8-V, 17-µA, microPower, precision, zero-drift CMOS op amp

Data sheet document-pdfAcrobat PDF open-in-new HTML

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Software

Support software

TIPD107 Simulation – TIDC145.ZIP (115 K)

Technical documentation

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Type Title Date
* User guide TIPD107 Verified Design Reference Guide Sep. 19, 2013

Related design resources

Design tools & simulation

SIMULATION TOOL
TINA-TI SPICE-based analog simulation program

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