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Closed Loop Current Sensor AC/DC Current 5V 8-Pin

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TMCS1101A3BQDRQ1 General Description

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.


Key Features

  • 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


Category Sensors, TransducersCurrent Sensors Mfr Texas Instruments
Series Automotive, AEC-Q100 Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active For Measuring AC/DC
Sensor Type Hall Effect Current - Sensing ±11.25A
Number of Channels 1 Output Ratiometric, Voltage
Sensitivity 200mV/A Frequency 80kHz
Linearity ±0.05% Accuracy -
Voltage - Supply 3V ~ 5.5V Response Time 6.5µs
Current - Supply (Max) 6mA Operating Temperature -40°C ~ 125°C (TA)
Polarization Bidirectional Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


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TMCS1101A3BQDRQ1 Datasheet PDF

Preliminary Specification TMCS1101A3BQDRQ1 PDF Download

TMCS1101A3BQDRQ1 PDF Preview

Buying Guide

  • What is the lifespan of TMCS1101A3BQDRQ1?

    The lifespan of TMCS1101A3BQDRQ1 depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of TMCS1101A3BQDRQ1?

    You can find it with PDF Datasheet for TMCS1101A3BQDRQ1 on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of TMCS1101A3BQDRQ1?

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  • Can I purchase samples for testing?

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