ST Life.augmented


High side current sense amplifier
  • active Active

The TSC1021 measures a small differential voltage on a high-side shunt resistor and translates it into a ground-referenced output voltage.

The TSC1021 has been specifically designed for automotive conditions: load-dump protection up to 60 V, reverse-battery protection up to -32 V, ESD protection up to 4 kV and internal filtering for EMI performance.

Input common-mode and power supply voltages are independent: the common-mode voltage can range from 2.8 to 30 V in operating conditions and up to 60 V in absolute maximum ratings while the TSC1021 can be supplied by a 5 V independent supply line.

The TSC1021 is housed in a tiny TSSOP8 package and integrates a buffer that provides low impedance output to ease interfacing and avoid accuracy losses. The overall device current consumption is lower than 300 μA.

pdf Please read
Errata Sheet
pdf Download

Key Features

  • Wide common-mode operating range independent of supply: 2.8 to 30 V
  • Wide common-mode survival range: -32 to 60 V (reversed battery and load-dump conditions)
  • Maximum input offset voltage:
  • ±1.5 mV for Tamb = 25 °C
  • ±2.3 mV for -40°C < Tamb< 125 °C
  • Maximum total output voltage error:
  • ±1.5 % for Tamb = 25 °C
  • ±2.5 % for -40 °C < Tamb< 125 °C
  • Maximum variation over temperature:
  • dVos/dT = 8 μV/°C
  • dVout/dT = 100 ppm/°C
  • Low current consumption: ICC max = 300 μA
  • -40 to 125 °C operating temperature range
  • Internally fixed gain: 20 V/V, 50 V/V
  • EMI filtering
  • Related products
  • See TSC103 for higher common-mode operating range (2.9 V to 70 V)

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS6926: High-side current sense amplifier
3.0 799 KB

Application Notes

Description Version Size
AN4369: Adjustable gain with a current sensing
1.0 654 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
TSC1021 PSpice macromodel
1.0.0 3 KB
TSC1021 eldo macromodel
1.0.0 3 KB

Presentations & Training Material


Description Version Size
ST offering in Wearable - Analog and Mixed Signal Portfolio
1,508 KB

Publications and Collaterals


Description Version Size
Analog ICs for wearable devices
981 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
TSC1021AIPTActiveTSSOP-8Tape And Reel-40125_-.65Distributor reported inventory date: 2014-12-19
Distributor NameRegionStockMin. order
Ecopack1 (*)-
TSC1021AIYPTActiveTSSOP-8Tape And Reel-40125Yes-.78No availability reported, please contact our Sales officeEcopack2 (**)PDF
TSC1021BIPTActiveTSSOP-8Tape And Reel-40125_-.65Distributor reported inventory date: 2014-12-19
Distributor NameRegionStockMin. order
Ecopack1 (*)-
TSC1021BIYPTActiveTSSOP-8Tape And Reel-40125YesFree Samples.78Distributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
Ecopack1 (*)PDF

(*) 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 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.
Feedback Form
Customer Feedback