TMCS1126 Series
80ARMS 500kHz Hall-effect current sensor with AFR, reference and ALERT
Manufacturer: Texas Instruments
Catalog
80ARMS 500kHz Hall-effect current sensor with AFR, reference and ALERT
Key Features
• High continuous current capability: 80ARMSRobust reinforced isolationHigh accuracySensitivity error: ±0.1%Sensitivity thermal drift: ±20ppm/°CSensitivity lifetime drift: ±0.2%Offset error: ±0.2mVOffset thermal drift: ±2µV/°COffset lifetime drift: ±0.2mVNon-linearity: ±0.1%High immunity to external magnetic fieldsPrecision zero-current reference outputFast ResponseSignal bandwidth: 500kHzResponse time: 250nsPropagation delay: 60nsOvercurrent detection response: 100nsOperating supply range: 3V to 5.5VBidirectional and unidirectional current sensingMultiple sensitivity options:Ranging from 15mV/A to 150mV/ASafety related certifications (planned)UL 1577 Component Recognition ProgramIEC/CB 62368-1High continuous current capability: 80ARMSRobust reinforced isolationHigh accuracySensitivity error: ±0.1%Sensitivity thermal drift: ±20ppm/°CSensitivity lifetime drift: ±0.2%Offset error: ±0.2mVOffset thermal drift: ±2µV/°COffset lifetime drift: ±0.2mVNon-linearity: ±0.1%High immunity to external magnetic fieldsPrecision zero-current reference outputFast ResponseSignal bandwidth: 500kHzResponse time: 250nsPropagation delay: 60nsOvercurrent detection response: 100nsOperating supply range: 3V to 5.5VBidirectional and unidirectional current sensingMultiple sensitivity options:Ranging from 15mV/A to 150mV/ASafety related certifications (planned)UL 1577 Component Recognition ProgramIEC/CB 62368-1
Description
AI
The TMCS1126 is a galvanically isolated Hall-effect current sensor with industry leading isolation and accuracy. An output voltage proportional to the input current is provided with excellent linearity and low drift at all sensitivity options. Precision signal conditioning circuitry with built-in drift compensation is capable of less than 1.4% maximum sensitivity error over temperature and lifetime with no system level calibration, or less than 1% maximum sensitivity error including both lifetime and temperature drift with a one-time calibration at room temperature.
AC or DC input current flows through an internal conductor generating a magnetic field measured by integrated, on-chip, Hall-effect sensors. Core-less construction eliminates the need for magnetic concentrators. Differential Hall sensors reject interference from stray external magnetic fields. Low conductor resistance increases measurable current ranges up to ±103A while minimizing power loss and easing thermal dissipation requirements. Insulation capable of withstanding 5kVRMS, coupled with a minimum of 8mm creepage and clearance, provides high levels of reliable lifetime reinforced working voltage. Integrated shielding enables excellent common-mode rejection and transient immunity.
Fixed sensitivity allows the device to operate from a single 3V to 5.5V power supply, eliminating ratiometry errors and improving supply noise rejection. TI provides the TMCS1126xxB as a lower-cost option.
The TMCS1126 is a galvanically isolated Hall-effect current sensor with industry leading isolation and accuracy. An output voltage proportional to the input current is provided with excellent linearity and low drift at all sensitivity options. Precision signal conditioning circuitry with built-in drift compensation is capable of less than 1.4% maximum sensitivity error over temperature and lifetime with no system level calibration, or less than 1% maximum sensitivity error including both lifetime and temperature drift with a one-time calibration at room temperature.
AC or DC input current flows through an internal conductor generating a magnetic field measured by integrated, on-chip, Hall-effect sensors. Core-less construction eliminates the need for magnetic concentrators. Differential Hall sensors reject interference from stray external magnetic fields. Low conductor resistance increases measurable current ranges up to ±103A while minimizing power loss and easing thermal dissipation requirements. Insulation capable of withstanding 5kVRMS, coupled with a minimum of 8mm creepage and clearance, provides high levels of reliable lifetime reinforced working voltage. Integrated shielding enables excellent common-mode rejection and transient immunity.
Fixed sensitivity allows the device to operate from a single 3V to 5.5V power supply, eliminating ratiometry errors and improving supply noise rejection. TI provides the TMCS1126xxB as a lower-cost option.