Product details

Continuous current (Max) (A) 20 Isolation working voltage VIOWM (rms) (V) 424 Sensitivity (Typ) (mV/A) 50, 100, 200, 400 Sensitivity error (%) 0.3 Sensitivity error drift (+/-) (Max) (ppm/°C) 50 Input offset current (+/-) (Max) (mA) 37.5 Input offset current drift (+/-) (Typ) (µA/°C) 0.1 Features Internal Zero Current Reference Voltage Small signal bandwidth (kHz) 80 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 3 Iq (Max) (mA) 5 CMTI (kV/µs) 25 Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (C) -40 to 125
Continuous current (Max) (A) 20 Isolation working voltage VIOWM (rms) (V) 424 Sensitivity (Typ) (mV/A) 50, 100, 200, 400 Sensitivity error (%) 0.3 Sensitivity error drift (+/-) (Max) (ppm/°C) 50 Input offset current (+/-) (Max) (mA) 37.5 Input offset current drift (+/-) (Typ) (µA/°C) 0.1 Features Internal Zero Current Reference Voltage Small signal bandwidth (kHz) 80 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 3 Iq (Max) (mA) 5 CMTI (kV/µs) 25 Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (C) -40 to 125
SOIC (D) 8 19 mm² 4.9 x 3.9
  • 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: 9 mA
    • Offset drift: 0.04 mA/°C
    • Linearity error: 0.05%
  • Lifetime and environmental drift: <±0.5%
  • 3-kVRMS isolation rating
  • Robust 600-V lifetime working voltage
  • Bidirectional and unidirectional current sensing
  • Zero drift internal reference
  • Operating supply range: 3 V to 5.5 V
  • Signal bandwidth: 80 kHz
  • Multiple sensitivity options:
    • TMCS1101A1B/U -Q1: 50 mV/A
    • TMCS1101A2B/U -Q1: 100 mV/A
    • TMCS1101A3B/U -Q1: 200 mV/A
    • TMCS1101A4B/U -Q1: 400 mV/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: 9 mA
    • Offset drift: 0.04 mA/°C
    • Linearity error: 0.05%
  • Lifetime and environmental drift: <±0.5%
  • 3-kVRMS isolation rating
  • Robust 600-V lifetime working voltage
  • Bidirectional and unidirectional current sensing
  • Zero drift internal reference
  • Operating supply range: 3 V to 5.5 V
  • Signal bandwidth: 80 kHz
  • Multiple sensitivity options:
    • TMCS1101A1B/U -Q1: 50 mV/A
    • TMCS1101A2B/U -Q1: 100 mV/A
    • TMCS1101A3B/U -Q1: 200 mV/A
    • TMCS1101A4B/U -Q1: 400 mV/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 1.8-mΩ 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 600-V lifetime working voltage and 3-kVRMS 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 3-V to 5.5-V 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 6 mA, 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 1.8-mΩ 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 600-V lifetime working voltage and 3-kVRMS 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 3-V to 5.5-V 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 6 mA, 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 ±600-V Working Voltage datasheet PDF | HTML 04 Jun 2021
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 note Precision Designs with Non-Ratiometric Magnetic Current Sensors 01 Jul 2019
Application note Low-Drift, Precision, In-Line Isolated Magnetic Motor Current Measurements 15 Apr 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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
Not available on TI.com
Simulation model

TMCS1101 TINA-TI Reference Design (Rev. A)

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

TMCS1101 TINA-TI SPICE Model (Rev. B)

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

TMCS1101A1B PSpice Model

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

TMCS1101A1U PSpice Model

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

TMCS1101A2B PSpice Model

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

TMCS1101A2U PSpice Model

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

TMCS1101A3B PSpice Model

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

TMCS1101A3U PSpice Model

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

TMCS1101A4B PSpice Model

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

TMCS1101A4U PSpice Model

SBOMBD2.ZIP (21 KB) - PSpice Model
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SOIC (D) 8 View options

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