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INA381A1QDGSRQ1

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Texas Instruments Current Sense Amplifiers, VSSOP-10-0.5mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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INA381A1QDGSRQ1

Texas Instruments · Current Sense Amplifiers · VSSOP-10-0.5mm

INA381A1QDGSRQ1 from Texas Instruments, in a VSSOP-10-0.5mm. 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 Connect to the supply side of the shunt resistor; the common-mode input range is -0.2 V to +26 V and the pins withstand 26 V even with VS removed.
2 VS+ power_in Power supply pin with an operating range of 2.7 V to 5.5 V, bypassed with a 0.1 µF capacitor placed as close to the pin as possible.
3 ALERT output Active-low, open-drain over-limit alert output that should use a 10 kΩ pull-up and must not be pulled up above 5.5 V.
4 RESET input Digital input that selects the alert mode, with low for transparent mode and high for latch mode, and an absolute maximum range of GND - 0.3 V to VS + 0.3 V.
5 GND power_in Device ground that should be connected, together with the thermal pad, to a solid ground plane on the PCB.
6 NC unconnected Internal connection that may be left floating, connected to ground, or connected to the supply.
7 CMPREF input Comparator reference input that sets the alert threshold through a resistor divider or an external reference, with an absolute maximum range of GND - 0.3 V to VS + 0.3 V.
8 CMPIN input Comparator input signal that connects directly to VOUT when no extra hysteresis is needed, or through an external RHYS resistor to add hysteresis, with an absolute maximum range of GND - 0.3 V to VS + 0.3 V.
9 VOUT output Current-sense amplifier output equal to the differential input voltage times the gain of 20, 50, 100, or 200 V/V, with an absolute maximum range of GND - 0.3 V to VS + 0.3 V.
10 IN- input Connect to the load side of the shunt resistor; the common-mode input range is -0.2 V to +26 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-10-0.5mm
Category Amplifiers/Comparators
Pins 10

CAD (KiCad official)

  • Symbol: INA381A1QDGSRQ1
  • Footprint: Package_SO:MSOP-10_3x3mm_P0.5mm
  • 3D model: VSSOP-10-0.5mm (KiCad packages3D, STEP)
  • 3D model files: ina381a1qdgsrq1-etched.step / ina381a1qdgsrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina381a1qdgsrq1.step / ina381a1qdgsrq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (38 pp, sha256 9960fd85de1ad05d, retrieved 2026-10-07, 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