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TMCS1108A3BQDRQ1

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Texas Instruments Current Sensors, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TMCS1108A3BQDRQ1

Texas Instruments · Current Sensors · SOIC-8

TMCS1108A3BQDRQ1 from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN+ input Current-input positive terminal; the input current flows through the internal 1.8 mΩ lead frame between IN+ and IN-, and input voltages must stay within -100 V to 100 V peak relative to GND (absolute maximum ±120 V).
2 IN+ input Second current-input positive terminal, connected to pin 1 for the same current path; input voltages must stay within -100 V to 100 V peak relative to GND (absolute maximum ±120 V).
3 IN- input Current-input negative terminal; the current entering IN+ and leaving through IN- sets positive polarity, and input voltages must stay within -100 V to 100 V peak relative to GND (absolute maximum ±120 V).
4 IN- input Second current-input negative terminal, connected to pin 3 for the same current path; input voltages must stay within -100 V to 100 V peak relative to GND (absolute maximum ±120 V).
5 GND power_in Analog ground and reference for the low-voltage side; the input voltages VIN+ and VIN- are specified relative to this pin, and the absolute maximum rating for the VS and VOUT pins is referenced to it.
6 NC unconnected No internal connection; the pin can tolerate capacitive or resistive connections to GND or VS, and tying it to GND is recommended where acceptable, with input impedance of 1 MΩ when GND < VNC < VS.
7 VOUT output Analog output voltage proportional to the input current; the linear swing is limited to about 0.02-0.1 V below VS and 5-10 mV above GND at 10 kΩ load, the short-circuit current is 90 mA, and the maximum capacitive load without sustained oscillation is 1 nF.
8 VS power_in Analog supply for the low-voltage side, with a recommended operating range of 3 V to 5.5 V (absolute maximum 6 V relative to GND), and a 0.1 µF low-ESR decoupling capacitor should be placed as close as possible between VS and GND.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Magnetic Sensors
Pins 8

CAD (KiCad official)

  • Symbol: TMCS1108A3BQDRQ1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: tmcs1108a3bqdrq1-etched.step / tmcs1108a3bqdrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmcs1108a3bqdrq1.step / tmcs1108a3bqdrq1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (42 pp, sha256 f7171fc700f01799, retrieved 2026-10-11, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF