INA302A3IPWR from Texas Instruments, in a TSSOP-14. 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	VS	power_in	Analog power supply input, 2.7 V to 5.5 V. Bypass to GND with a 0.1 µF ceramic capacitor placed close to the pin. Maximum supply current is 950 µA.
2	OUT	output	Analog output voltage proportional to the differential input voltage across IN+/IN- multiplied by the amplifier gain (100 V/V for A3 version). Output is referenced to the REF pin.
3	LIMIT1	input	ALERT1 threshold limit input. Sets the trip threshold for comparator 1 via an external resistor divider; see Setting Alert Thresholds section. Range 0 V to VS.
4	REF	input	Reference voltage input for the current-sense amplifier output, 0 V to VS. Sets the zero-current output voltage; typically driven from a precision reference or from VS/2 for bidirectional current sensing.
5	GND	power_in	Analog ground return for the supply and internal reference circuitry.
6	LATCH1	input	Digital input selecting transparent or latched mode for the ALERT1 output. Transparent mode tracks the comparator state; latched mode holds the ALERT1 asserted until reset.
7	LATCH2	input	Digital input selecting transparent or latched mode for the ALERT2 output. Transparent mode tracks the comparator state; latched mode holds the ALERT2 asserted until reset.
8	NC	unconnected	No internal connection. Leave floating or tie to GND per board layout preference.
9	LIMIT2	input	ALERT2 threshold limit input. Sets the trip threshold for comparator 2 via an external resistor divider; see Setting Alert Thresholds section. Range 0 V to VS.
10	DELAY	input	Delay timing input for comparator 2. An external capacitor to GND sets the ALERT2 response delay from 2 µs to 10 s; see Alert Outputs section.
11	ALERT2	output	Open-drain, active-low alert output driven by comparator 2. For the INA302 this is a second overlimit alert; for the INA303 (window comparator) this is the underlimit alert. Requires an external pull-up resistor (e.g., 10 kΩ) to a supply ≤6 V.
12	ALERT1	output	Open-drain, active-low overlimit alert output driven by comparator 1 (response time <1 µs). Requires an external pull-up resistor (e.g., 10 kΩ) to a supply ≤6 V.
13	IN-	input	Inverting current-sense input. Connect to the load side of the external current-sense (shunt) resistor. Common-mode range -0.1 V to +36 V, independent of VS.
14	IN+	input	Non-inverting current-sense input. Connect to the supply side of the external current-sense (shunt) resistor. Common-mode range -0.1 V to +36 V, independent of VS.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-14
Category	Amplifiers/Comparators
Pins	14

Ordering variants

Same part, different packaging or reel option.

INA302A3IPWR

CAD (KiCad official)

Symbol: INA302A3IPWR
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (None pp, sha256 1610232399ad3a07, retrieved 2026-08-17, tier: lcsc)
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