INA826AIDR 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 (inverting) differential input to the instrumentation amplifier. Input common-mode range includes V- and is protected to ±40 V.
2	RG	passive	Gain-setting pin. Connect an external resistor R_G between pin 2 and pin 3 to set the gain per G = 1 + 49.4 kΩ / R_G. Leave open for G = 1.
3	RG	passive	Gain-setting pin. Connect an external resistor R_G between pin 2 and pin 3 to set the gain per G = 1 + 49.4 kΩ / R_G. Leave open for G = 1.
4	+IN	input	Positive (noninverting) differential input to the instrumentation amplifier. Input common-mode range includes V- and is protected to ±40 V.
5	-VS	power_in	Negative supply rail. Connect to GND for single-supply operation (V+ = 3 V to 36 V) or to a negative rail for dual-supply operation (±1.5 V to ±18 V). Bypass with 0.1 µF to ground.
6	REF	input	Reference input that sets the output zero level (V_O = G × (V_IN+ − V_IN−) + V_REF). Must be driven by a low-impedance source; range −20 V to +20 V relative to ground.
7	VOUT	output	Rail-to-rail amplifier output. Drives loads referenced to REF; short-circuit protected (short to V_S/2).
8	+VS	power_in	Positive supply rail. 3 V to 36 V single-supply or +1.5 V to +18 V dual-supply. Bypass with 0.1 µF to ground close to the pin.

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.

INA826AIDR
INA826AIDRIDGKR
INA826AIDRIDGK
INA826AIDRGR
INA826AIDRG

CAD (KiCad official)

Symbol: INA826AIDR
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 (48 pp, sha256 5f68e2622e9dc460, retrieved 2026-08-17, tier: manufacturer)
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: 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