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STEVAL-ISQ013V1

Low side current sensing based on TS507
  • active Active

Current sensing is very useful for protecting applications. The STEVAL-ISQ013V1 demonstration board implements a low-side current sensing which consists in placing a sense resistor between the load and the circuit ground and the resulting voltage drop is amplified using a TS507 op amp.

The common mode voltage is close to ground, whatever the voltage of the power source, so the current sense voltage can be amplified by this low voltage op amp without any restrictions.

The circuit offers very stable electrical characteristics over the entire supply voltage range and is particularly intended for automotive and industrial applications.

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Data Brief

Key Features

  • Ultra low offset voltage: 25 μV typ, 100 μV max
  • Rail-to-rail input/output voltage swing
  • Operating from 2.7 V to 5.5 V
  • High speed: 1.9 MHz
  • 45° phase margin with 100 pF
  • Low consumption: 0.8 mA at 2.7 V
  • Very large signal voltage gain: 131 dB
  • High power supply rejection ratio: 105 dB
  • Very high ESD protection 5 kV (HBM)
  • Latch-up immunity
  • RoHS compliant

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Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DB1089: Low-side current sensing demonstration board based on the TS507
1.1 68 KB

Application Notes

Description Version Size
pdf
AN3222: Demonstration board user guidelines for low-side current sensing with the TS507 operational amplifier
1.2 628 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
Gerber files
1.0 42 KB

Bill of Materials

Description Version Size
pdf
Bill of materials
1.0 17 KB

Schematic Pack

Description Version Size
pdf
Board schematics
1.0 13 KB

Sample & Buy

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Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISQ013V1ActiveTS507Buy Direct28.17Distributor reported inventory date: 2014-08-21
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA30
P&SOrder NowASIA/PACIFIC11
DIGIKEYOrder NowWORLDWIDE31
Ecopack2-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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