INA333AIDGKR from Texas Instruments, in a MSOP-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 resistor terminal 1. Connect an external resistor RG between pins 1 and 8 to set gain: G = 1 + (100kΩ / RG). Leave open for unity gain.
2	VIN-	input	Inverting analog input. Input voltage range extends from (V-)+0.1V to (V+)-0.1V; input bias current typ ±70pA, max ±200pA. Includes internal RFI-filtered input network.
3	VIN+	input	Non-inverting analog input. Input voltage range extends from (V-)+0.1V to (V+)-0.1V; input bias current typ ±70pA, max ±200pA. Includes internal RFI-filtered input network.
4	V-	power_in	Negative power supply. Single-supply range 1.8V to 5.5V referenced to V+; dual-supply range ±0.9V to ±2.75V. Absolute max supply (V+ − V−) = 7V.
5	REF	input	Reference input; sets the output offset (VOUT is referenced to this pin). Voltage range V- to V+; input resistance RIN ≈ 300kΩ. Drive from a low-impedance source to preserve CMRR.
6	VOUT	output	Amplifier output. Rail-to-rail: swings within ~50mV of the supply rails at RL=10kΩ. Short-circuit current −40/+5mA (continuous to common). Drives capacitive loads up to 500pF.
7	V+	power_in	Positive power supply. Single-supply range 1.8V to 5.5V; dual-supply range ±0.9V to ±2.75V. Quiescent current typ 50µA (max 80µA). Bypass with 0.1µF close to the pin.
8	RG	passive	Gain-setting resistor terminal 2. Connect an external resistor RG between pins 1 and 8 to set gain: G = 1 + (100kΩ / RG). Leave open for unity gain.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	MSOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

INA333AIDGKR
INA333AIDGKT
INA333AIDGKRIDRGR
INA333AIDGKRIDRGT

CAD (KiCad official)

Symbol: INA333AIDGKR
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ina333aidgkr.step`	123 KB	You want the bare part, or you mark your own boards.
`ina333aidgkr-etched.step`	2.4 MB	You want the part with `INA333AIDGKR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 599 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 (23 pp, sha256 9d5c1a1939a60413, 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