Measures current through a shunt on a rail as high as 110 V while running off a normal 5 V supply, since its inputs tolerate a common-mode range from -4 to 110 V independent of the supply. That lets it sit high-side on motor, battery-stack, and industrial rails a standard op-amp could not survive. Fixed-gain options from 20 to 200 V/V set the output scale, and a wide bandwidth tracks fast load steps. A rugged high-voltage current monitor in a tiny package.

Pinout

Pin	Name	Type	Function
1	OUT	output	Analog output voltage. Output equals Gain x (V(IN+) - V(IN-)); swings within Vs-0.15 V of Vs and 0.02 V of GND with a 10-kOhm load.
2	GND	power_in	Device ground reference.
3	IN+	input	Shunt resistor positive sense input. Common-mode range -4 V to +110 V (operational); differential range +/-12 V (or +/-6 V on INA293A5/B5). Input bias ~20 uA typ.
4	IN-	input	Shunt resistor negative sense input. Common-mode range -4 V to +110 V (operational); differential range +/-12 V (or +/-6 V on INA293A5/B5). Input bias ~20 uA typ.
5	VS	power_in	Positive supply voltage, 2.7 V to 20 V operating range. Quiescent current 1.5 mA typ.

Key specifications

Parameter	Value
Type	Current-sense amplifier (voltage output)
Common-mode range	-4 V to 110 V
Gain options	20 / 50 / 100 / 200 V/V
Bandwidth	Up to 1.3 MHz
Supply	2.7-5.5 V
Direction	Bidirectional (with reference)
Package	SOT-23-5

Ordering variants

Same part, different packaging or reel option.

INA293A1IDBVR (gain 20)
INA293A2IDBVR (gain 50)
INA293A4IDBVR (gain 200)

CAD (KiCad official)

Symbol: Amplifier_Current:INA293A1 (KiCad official)
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (32 pp, sha256 48c5dc22a03325c7, 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