TMCS1101A4BQDR

Texas Instruments

Texas Instruments TMCS1101A4BQDR precision isolated Hall-effect current sensor, bidirectional AC/DC, 5.75A sensing range, 400 mV/A sensitivity, 80 kHz bandwidth, ±0.5% accuracy, ratiometric voltage output, 4.5-5.5V supply, -40 to 125°C, 8-SOIC package.

Texas Instruments TMCS1101A4BQDR
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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

TMCS1101A4BQDR specifications
Parameter / AttributeSpecification / Value
Sensor typeHall Effect
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Current - sensing5.75A
Current - supply6mA
Frequency80kHz
Response time6.5µs
Operating temperature-40°C ~ 125°C
OutputRatiometric, Voltage
PackageTape & Reel (TR); Cut Tape (CT)
Accuracy±0.5%
Linearity±0.05%
Sensitivity400mV/A
PolarizationBidirectional
For measuringAC/DC
Case8-SOIC (0.154\", 3.90mm Width)
Channels1

Technical details

It measures both AC and DC current bidirectionally up to 5.75 A, with a sensitivity of 400 mV/A and a bandwidth of 80 kHz. The ±0.5% accuracy and ±0.05% linearity make it suitable for motor-drive phase monitoring, power-supply output sensing, and battery-charger current loops where galvanic isolation is needed without a separate isolator.

Maximum supply draw is 6 mA.

Bandwidth and response time — what they buy you

The 80 kHz bandwidth covers the switching frequency of most motor drives and power converters, so you see the ripple waveform, not just the DC average. The 6.5 µs response time means the output settles within one or two PWM cycles — fast enough for overcurrent detection in a drive's firmware loop, but not fast enough for a hardware trip on a sub-microsecond fault. If you need a hardwired desaturation or fast-trip comparator, you'd add an external comparator ahead of this sensor's output.

No special clearance or slot in the PCB is needed — the Hall-effect die inside the package provides isolation through the mould compound, not through an air gap.

TMCS1101A4BQDR
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