TIDA-00976

High-Speed, High-Side Current Sense Reference Design

TIDA-00976

Design files

Overview

This reference design is a high-speed current-to-voltage circuit. It is optimized for current-sense applications that require high-speed current measurements in the positive supply rail for voltages from 5 to 30 V. This design will reduce the common-mode voltage from 30 V and produce an output voltage centered at 2.5 V for sampling with an analog-to-digital converter (ADC). The output common mode can be easily changed by using different precision references.

Features
  • Bandwidth > 15 MHz
  • Converts current-to-voltage
  • High-side voltage range from 5 to 30 V
  • Flexible output common-mode voltage

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.

TIDUC40.PDF (1179 K)

Reference design overview and verified performance test data

TIDRRV6.PDF (171 K)

Detailed schematic diagram for design layout and components

TIDRRV7.PDF (102 K)

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

TIDCDN7.ZIP (1890 K)

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

TIDRRV8.PDF (376 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Fully differential amplifiers

THS4131Fully Differential Input/Output Low Noise Amplifier

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A49150-mA, 36-V, low-noise, high-PSRR, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Series voltage references

REF50252.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

Data sheet: PDF | HTML

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Design guide High-Speed, High-Side Current Sense Reference Design Jul. 19, 2017
Analog Design Journal Analysis of fully differential amplifiers Mar. 11, 2005
Analog Design Journal Op amp stability and input capacitance Feb. 25, 2005

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