Low side current sensing based on TS507

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.

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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设计

技术文档

产品规格
Description Version Size
DB1089 DB1089: Low-side current sensing demonstration board based on the TS507 1.1 68 KB
应用手册
Description Version Size
AN3222 AN3222: Demonstration board user guidelines for low-side current sensing with the TS507 operational amplifier 1.2 628 KB

硬件资源

Board Manufacturing Specifications
Description Version Size
Gerber files 1.0 42 KB
Bill of Materials
Description Version Size
Bill of materials 1.0 16 KB
Schematic Packs
Description Version Size
Board schematics 1.0 12 KB

法律

许可协议
Description Version Size
Evaluation products license agreement 1.0 125 KB
支持和社区

样片和购买

型号 Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISQ013V1 TS507 Active 28 1 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
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(*) 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

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISQ013V1 ActiveCARDIndustrialEcopack2
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(**) 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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