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TIPD107

Low-level V-to-I converter reference design, 0-V to 5-V input and 0-µA to 5-µA output

Design files

TIPD107

Design files

Overview

This verified design is a micro-amp voltage-to-current (V-I) converter 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.

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
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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 Schematic — TIPD107
SLAC577A.ZIP (505 K)

Detailed schematic diagram for design layout and components

download Schematic — TIPD107
TIDR185.PDF (74 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIPD107
TIDR207A.PDF (185 K)

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

download Gerber file — TIPD107
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

INA326 — Precision, Low Drift, CMOS Instrumentation Amplifier

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

OPA333 — Micropower, 1.8-V, 17-µA zero-drift CMOS precision operational amplifier

Data sheet: PDF | HTML

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Software

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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