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Precision isolated current sensor with internal reference

US ECCN: EAR99 US/Local Export Classification Number

Inventory: 1,190  

Quality information

RoHS Yes
Lead finish / Ball material SN
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
SOIC (D) | 8 2,500 | LARGE T&R
-40 to 125
Package | Pins SOIC (D) | 8
Package qty | Carrier: 2,500 | LARGE T&R
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the TMCS1101

  • Total error: ±0.51% typical, ±1.15% maximum, –40ºC to 85ºC
    • Sensitivity error: ±0.5%
    • Offset error: 9 mA
    • Offset drift: 0.04 mA/ºC
    • Linearityerror: 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:
    • TMCS1101A1U/B: 50mV/A
    • TMCS1101A2U/B: 100mV/A
    • TMCS1101A3U/B: 200mV/A
    • TMCS1101A4U/B: 400mV/A
  • Safety related certifications (planned)
    • UL 1577 Component Recognition Program
    • IEC/CB62368-1

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Description for the TMCS1101

The TMCS1101 is a galvanically isolated Hall-effect current sensorcapable of dc or ac current measurement with high accuracy, excellent linearity, and temperaturestability. A low-drift, temperature-compensated signal chain provides < 1.5% full-scale error across the devicetemperature range.

The input current flows through an internal 1.8-mΩ conductor that generates a magneticfield measured by an integrated Hall-effect sensor. This structure eliminates externalconcentrators and simplifies design. Low conductor resistance minimizes power loss and thermaldissipation. Inherent galvanic insulation provides a 600-V lifetime working voltage and3-kVRMS basic isolation between the current path and circuitry. Integratedelectrical 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 to operate from a single 3-V to 5.5-V powersupply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity isconsidered positive when flowing into the positive input pin. Both unidirectional and bidirectional sensing variantsare available.

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


Qty Price (USD)
1-99 3.03
100-249 2.655
250-999 1.862
1,000+ 1.5