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TMCS1101-Q1

ACTIVE

AEC-Q100, ±600-V, precision, isolated current sensor with internal reference

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Data sheet

TMCS1101-Q1

ACTIVE
Data sheet Order now

Product details

Continuous current (max) (A) 20 Working isolation voltage (VIOWM) (Vrms) 424 Input offset current (±) (max) (mA) 45, 50, 52.5, 60, 70, 80, 90, 100 Input offset current drift (±) (typ) (µA/°C) 0.1 Features Internal Zero Current Reference Voltage Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Iq (max) (mA) 5 Small-signal bandwidth (kHz) 80 Sensitivity error (%) 0.3 Sensitivity error drift (±) (max) (ppm/°C) 50 Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Creepage (min) (mm) 4 Clearance (min) (mm) 4 Isolation rating Basic Surge isolation voltage (VIOSM) (VPK) 6000
Continuous current (max) (A) 20 Working isolation voltage (VIOWM) (Vrms) 424 Input offset current (±) (max) (mA) 45, 50, 52.5, 60, 70, 80, 90, 100 Input offset current drift (±) (typ) (µA/°C) 0.1 Features Internal Zero Current Reference Voltage Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Iq (max) (mA) 5 Small-signal bandwidth (kHz) 80 Sensitivity error (%) 0.3 Sensitivity error drift (±) (max) (ppm/°C) 50 Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Creepage (min) (mm) 4 Clearance (min) (mm) 4 Isolation rating Basic Surge isolation voltage (VIOSM) (VPK) 6000
SOIC (D) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified for automotive applications
    • Temperature Grade 1: –40°C to 125°C, TA
  • Functional Safety-Capable
  • Total error: ±0.51% typical, ±1.15% maximum, –40°C to 85°C
    • Sensitivity error: ±0.5%
    • Offset error: 9mA
    • Offset drift: 0.04mA/°C
    • Linearity error: 0.05%
  • Lifetime and environmental drift: <±0.5%
  • 3kVRMS isolation rating
  • Robust 600V lifetime working voltage
  • Bidirectional and unidirectional current sensing
  • Zero drift internal reference
  • Operating supply range: 3V to 5.5V
  • Signal bandwidth: 80kHz
  • Multiple sensitivity options:
    • TMCS1101A1B/U-Q1: 50mV/A
    • TMCS1101A2B/U-Q1: 100mV/A
    • TMCS1101A3B/U-Q1: 200mV/A
    • TMCS1101A4B/U-Q1: 400mV/A
  • Safety related certifications
    • UL 1577 Component Recognition Program
    • IEC/CB 62368-1
  • AEC-Q100 qualified for automotive applications
    • Temperature Grade 1: –40°C to 125°C, TA
  • Functional Safety-Capable
  • Total error: ±0.51% typical, ±1.15% maximum, –40°C to 85°C
    • Sensitivity error: ±0.5%
    • Offset error: 9mA
    • Offset drift: 0.04mA/°C
    • Linearity error: 0.05%
  • Lifetime and environmental drift: <±0.5%
  • 3kVRMS isolation rating
  • Robust 600V lifetime working voltage
  • Bidirectional and unidirectional current sensing
  • Zero drift internal reference
  • Operating supply range: 3V to 5.5V
  • Signal bandwidth: 80kHz
  • Multiple sensitivity options:
    • TMCS1101A1B/U-Q1: 50mV/A
    • TMCS1101A2B/U-Q1: 100mV/A
    • TMCS1101A3B/U-Q1: 200mV/A
    • TMCS1101A4B/U-Q1: 400mV/A
  • Safety related certifications
    • UL 1577 Component Recognition Program
    • IEC/CB 62368-1

The TMCS1101-Q1 is a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain provides < 1.5% full-scale error across the device temperature range.

The input current flows through an internal 1.8mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor. This structure eliminates external concentrators and simplifies design. Low conductor resistance minimizes power loss and thermal dissipation. Inherent galvanic insulation provides a 600V lifetime working voltage and 3kVRMS basic isolation between the current path and circuitry. Integrated electrical shielding enables excellent common-mode rejection and transient immunity.

The output voltage is proportional to the input current with four sensitivity options. Fixed sensitivity allows the TMCS1101-Q1 to operate from a single 3V to 5.5V power supply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity is considered positive when flowing into the positive input pin. Both unidirectional and bidirectional sensing variants are available.

The TMCS1101-Q1 draws a maximum supply current of 6mA, and all sensitivity options are specified over the operating temperature range of –40°C to +125°C.

The TMCS1101-Q1 is a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain provides < 1.5% full-scale error across the device temperature range.

The input current flows through an internal 1.8mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor. This structure eliminates external concentrators and simplifies design. Low conductor resistance minimizes power loss and thermal dissipation. Inherent galvanic insulation provides a 600V lifetime working voltage and 3kVRMS basic isolation between the current path and circuitry. Integrated electrical shielding enables excellent common-mode rejection and transient immunity.

The output voltage is proportional to the input current with four sensitivity options. Fixed sensitivity allows the TMCS1101-Q1 to operate from a single 3V to 5.5V power supply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity is considered positive when flowing into the positive input pin. Both unidirectional and bidirectional sensing variants are available.

The TMCS1101-Q1 draws a maximum supply current of 6mA, and all sensitivity options are specified over the operating temperature range of –40°C to +125°C.
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Technical documentation

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Type Title Date
* Data sheet TMCS1101-Q1 AEC-Q100, 1 .5 % Precision, Basic Isolation Hall-Effect Current Sensor With ±600V Working Voltage datasheet (Rev. A) PDF | HTML 05 Jun 2025
Application brief Low-Drift, Precision, In-Line Isolated Magnetic Motor Current Measurements (Rev. A) 24 Jul 2023
Application note TMCS110x Layout Challenges and Best Practices PDF | HTML 03 Dec 2022
White paper Improve High-Voltage System Efficiency With Zero-Drift Hall-Effect Current Sense (Rev. A) PDF | HTML 15 Mar 2022
Functional safety information TMCS1101-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 30 Mar 2021
Application note Thermal Implementation Guide for In-Package Magnetic Current Sensors PDF | HTML 12 Jul 2020
EVM User's guide TMCS1101EVM User's Guide (Rev. A) 25 Mar 2020
Application brief Precision Designs with Non-Ratiometric Magnetic Current Sensors 01 Jul 2019

Design & development

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Evaluation board

TMCS1101EVM — TMCS1101 isolated Hall-effect current sensing evaluation module

The TMCS1101EVM is a tool intended to facilitate rapid, convenient use of the TMCS1101, an isolated Hall-effect precision current sense monitor utilizing an internal ratiometric reference. This evaluation module allows the user push the max operating current through the Hall-input side while (...)
User guide: PDF
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Simulation model

TMCS1101 TINA-TI Reference Design (Rev. A)

SBOMB08A.TSC (231 KB) - TINA-TI Reference Design
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Simulation model

TMCS1101 TINA-TI SPICE Model (Rev. B)

SBOMB09B.ZIP (54 KB) - TINA-TI Spice Model
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Simulation model

TMCS1101A1B PSpice Model

SBOMBE1.ZIP (20 KB) - PSpice Model
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Simulation model

TMCS1101A1U PSpice Model

SBOMBD9.ZIP (21 KB) - PSpice Model
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Simulation model

TMCS1101A2B PSpice Model

SBOMBD8.ZIP (22 KB) - PSpice Model
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Simulation model

TMCS1101A2U PSpice Model

SBOMBD7.ZIP (22 KB) - PSpice Model
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Simulation model

TMCS1101A3B PSpice Model

SBOMBD5.ZIP (21 KB) - PSpice Model
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Simulation model

TMCS1101A3U PSpice Model

SBOMBD4.ZIP (21 KB) - PSpice Model
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Simulation model

TMCS1101A4B PSpice Model

SBOMBD3.ZIP (21 KB) - PSpice Model
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Simulation model

TMCS1101A4U PSpice Model

SBOMBD2.ZIP (21 KB) - PSpice Model
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Calculation tool

CS-MAGNETIC-ERROR-TOOL-CALC — Hall-Effect Current Sensor Comparison and Error Tool

Hall-Effect Current Sensor Comparison and Error Tool
Supported products & hardware

Supported products & hardware

Products
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