INA828IDR 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	RG	passive	Gain setting pin. Place an external gain-setting resistor R_G between pin 1 and pin 8. Gain equation: G = 1 + (50 kΩ / R_G), programmable from 1 to 1000 V/V.
2	-IN	input	Negative (inverting) analog input. Absolute-max input voltage ±40 V; operating common-mode range (V-)+2 V to (V+)-2 V.
3	+IN	input	Positive (noninverting) analog input. Absolute-max input voltage ±40 V; operating common-mode range (V-)+2 V to (V+)-2 V.
4	-VS	power_in	Negative supply rail. Dual-supply range −2.25 V to −18 V (or connect to GND for single-supply operation from 4.5 V to 36 V on +VS).
5	REF	input	Reference input that sets the output zero level. Must be driven by a low-impedance source; R_IN ≈ 40 kΩ, gain to output = 1 V/V.
6	OUT	output	Amplifier output. Rail-to-rail-ish swing to within 0.15 V of the supply rails; short-circuit current ±18 mA; stable with up to 1 nF capacitive load.
7	+VS	power_in	Positive supply rail. Single-supply 4.5 V to 36 V or dual-supply +2.25 V to +18 V; quiescent current 650 µA max.
8	RG	passive	Gain setting pin (second terminal). Place an external gain resistor R_G between pin 1 and pin 8. Gain equation: G = 1 + (50 kΩ / R_G).

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.

INA828IDR

CAD (KiCad official)

Symbol: INA828IDR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ina828idr.step`	122 KB	You want the bare part, or you mark your own boards.
`ina828idr-etched.step`	2.0 MB	You want the part with `INA828IDR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 499 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Texas Instruments datasheet (40 pp, sha256 6f3ae5a81e3d3eb9, retrieved 2026-08-17, tier: manufacturer)
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).

Datasheet PDF