component
INA271AQDRQ1
Public Unreviewedby Ray
Texas Instruments Current-Sensing Amplifiers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownINA271AQDRQ1
Texas Instruments · Current-Sensing Amplifiers · SOIC-8
INA271AQDRQ1 from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN- | input | Negative differential sense input. Connect to the load side of the current-sense shunt resistor RS. Common-mode range -16 V to +80 V, IIB typ ±8 μA (max ±16 μA). |
| 2 | GND | power_in | Device ground reference for the supply and analog signals. |
| 3 | PRE_OUT | output | Preamplifier analog output. Drives the input node of an optional external single-pole RC filter that feeds BUF IN. Internal 96-kΩ source impedance (±30% initial, -2200 ppm/°C). |
| 4 | BUF_IN | input | Output-buffer analog input. Connect to the output of the external filter driven by PRE OUT (tie directly to PRE OUT when no filter is used). Buffer gain = 2 V/V; buffer input bias current typ -50 nA. |
| 5 | OUT | output | Analog voltage output = VSENSE × 20 V/V (INA271A-Q1 gain). Rail-to-rail: swings to within ~50 mV of GND and VS with a 10-kΩ load; output impedance 1.5 Ω; drives up to 10 nF without sustained oscillation. |
| 6 | VS | power_in | Positive supply, 2.7 V to 18 V. Quiescent current 700 μA typ (900 μA max). Bypass with 0.1 μF close to the pin. |
| 7 | NC | unconnected | No internal connection. Datasheet recommends tying this pin to ground. |
| 8 | IN+ | input | Positive differential sense input. Connect to the supply side of the current-sense shunt resistor RS. Common-mode range -16 V to +80 V, independent of VS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
INA271AQDRQ1
CAD (KiCad official)
- Symbol:
INA271AQDRQ1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (None pp, sha256
c5298837c411edb6, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).