component

INA303A3QPWRQ1

Public Made by Adom

by adom

Texas Instruments Current Sense Amplifiers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentamplifiers-comparatorsina303a3qpwrq1factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 18d ago
viewers ina303a3qpwrq1: viewers · Ray 18d ago
ina303a3qpwrq1-etched.glb ina303a3qpwrq1: factory component page (tier=lcsc) · Ray 18d ago
ina303a3qpwrq1-etched.step ina303a3qpwrq1: factory component page (tier=lcsc) · Ray 18d ago
ina303a3qpwrq1-hero.glb ina303a3qpwrq1: hero GLB from the etched model (keeps the MPN mark) · Ray 18d ago
ina303a3qpwrq1-hero.overlay.json Publish 0.1.0 · Ray 18d ago
ina303a3qpwrq1.glb Publish 0.1.0 · Ray 18d ago
ina303a3qpwrq1.kicad_mod Publish 0.1.0 · Ray 18d ago
ina303a3qpwrq1.kicad_sym Publish 0.1.0 · Ray 18d ago
ina303a3qpwrq1.lbr Publish 0.1.0 · Ray 18d ago
ina303a3qpwrq1.step Publish 0.1.0 · Ray 18d ago
package.json Publish 0.1.0 · Ray 18d ago
page.json ina303a3qpwrq1: specified limits as data (metadata.characteristics, 50 rows from the datasheet) · Ray 14d ago
README.md ina303a3qpwrq1: specified limits as data (metadata.characteristics, 50 rows from the datasheet) · Ray 14d ago

INA303A3QPWRQ1

Texas Instruments · Current Sense Amplifiers · TSSOP-14

INA303A3QPWRQ1 from Texas Instruments, in a TSSOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VS power_in Analog power supply with a recommended operating range of 2.7 V to 5.5 V (5 V nominal), and an absolute maximum of 6 V.
2 OUT output Analog output that carries the output voltage; absolute limits are GND - 0.3 V to (VS) + 0.3 V.
3 LIMIT1 input Analog threshold limit input for ALERT1, set with external resistors as described in the Setting Alert Thresholds section; absolute limits are GND - 0.3 V to (VS) + 0.3 V.
4 REF input Analog reference voltage input that must be between 0 V and VS; absolute limits are GND - 0.3 V to (VS) + 0.3 V.
5 GND power_in Analog ground reference for the device.
6 LATCH1 input Digital input selecting transparent or latch mode for ALERT1; absolute limits are GND - 0.3 V to (VS) + 0.3 V.
7 LATCH2 input Digital input selecting transparent or latch mode for ALERT2; absolute limits are GND - 0.3 V to (VS) + 0.3 V.
8 NC unconnected No internal connection.
9 LIMIT2 input Analog threshold limit input for ALERT2, set as described in the Setting Alert Thresholds section; absolute limits are GND - 0.3 V to (VS) + 0.3 V.
10 DELAY input Analog delay timing input that sets the delayed alert response for comparator 2 (2 µs to 10 s per the datasheet); absolute limits are GND - 0.3 V to (VS) + 0.3 V.
11 ALERT2 output Open-drain, active-low alert output that is an underlimit alert for the INA303-Q1 (window comparator); absolute maximum is GND - 0.3 V to 6 V.
12 ALERT1 output Open-drain, active-low overlimit alert output; absolute maximum is GND - 0.3 V to 6 V.
13 IN- input Connect to the load side of the current-sensing resistor; recommended common-mode range is -0.1 V to 36 V and the absolute common-mode limit is GND - 0.3 V to 40 V.
14 IN+ input Connect to the supply side of the current-sensing resistor; recommended common-mode range is -0.1 V to 36 V and the absolute common-mode limit is GND - 0.3 V to 40 V.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Differential input voltage range (A3 versions) VIN -25 25 mV VIN = VIN+ – VIN–, VREF = VS / 2, A3 versions 5
Common-mode rejection ratio (A3 versions) CMRR 110 120 dB VIN+ = 0 V to 36 V, TA = –40°C to +125°C, A3 versions 5
Offset voltage, RTI (A3 versions) VOS -30 5 30 µV A3 versions 5
Power-supply rejection ratio PSRR -5 0.3 5 µV/V VS = 2.7 V to 5.5 V, VIN+ = 12 V, TA = –40°C to +125°C 5
Input offset current IOS -0.01 0.01 µA VSENSE = 0 mV 5
Gain error (A3 versions) -0.15 0.1 0.15 % VOUT = 0.5 V to VS – 0.5 V, A3 versions 5
Gain error drift 3 10 ppm/°C TA= –40°C to +125°C 5
Nonlinearity error -0.01 0.01 % VOUT = 0.5 V to VS – 0.5 V 5
Input bias current IB 115 µA 5
Offset voltage drift, RTI dVOS/dT 0.02 0.25 µV/°C TA= –40°C to +125°C 5
Offset voltage, both comparators (A3 versions) VOS 0.5 4 mV A3 versions 6
Internal programmable delay error 4 % TA = –40°C to +125°C 6
Delay threshold voltage VTH 1.21 1.22 1.23 V TA = –40°C to +125°C 6
Delay charging current ID 4.85 5 5.15 µA TA = –40°C to +125°C, VDELAY = 0.6 V 6
Limit threshold output current, comparator 1 ILIMIT1 79.2 80 80.8 µA TA = 25°C, VLIMIT1 < VS – 0.6 V 6
Limit threshold output current, comparator 1 ILIMIT1 78.4 81.6 µA TA = –40°C to +125°C, VLIMIT1 < VS – 0.6 V 6
Limit threshold output current, comparator 2 ILIMIT2 79.7 80 80.4 µA TA = 25°C, VLIMIT2 < VS – 0.6 V 6
Limit threshold output current, comparator 2 ILIMIT2 79.2 80.8 µA TA = –40°C to +125°C, VLIMIT2 < VS – 0.6 V 6
LATCH1, LATCH2 high-level input voltage VIH 1.4 6 V TA = –40°C to +125°C 6
LATCH1, LATCH2 low-level input voltage VIL 0 0.4 V TA = –40°C to +125°C 6
Alert low-level output voltage VOL 70 400 mV IOL = 3 mA, TA = –40°C to +125°C 6
Total alert propagation delay, comparator 1 tp 0.6 1 µs Comparator 1, input overdrive = 1 mV 6
Total alert propagation delay, comparator 2 tp 1.25 2 µs Comparator 2, input overdrive = 1 mV, delay = 100 kΩ to VS 6
Slew-rate-limited tp, comparator 1 tp 1 1.5 µs Comparator 1, VOUT step = 0.5 V to 4.5 V, VLIMIT = 4 V 6
Slew-rate-limited tp, comparator 2 (INA303-Q1) tp 1.5 2.5 µs Comparator 2 (INA303-Q1), VOUT step = 4.5 V to 0.5 V, VLIMIT = 1 V, delay = 100 kΩ to VS 6
ALERT1, ALERT2 pin leakage input current 0.1 1 µA VOH = 3.3 V 6
LATCH1, LATCH2 digital leakage input current 1 µA 0 V ≤ VLATCH1, VLATCH2 ≤ VS 6
Quiescent current IQ 850 950 µA TA = 25°C 6
Quiescent current IQ 1150 µA TA = –40°C to +125°C 6
Maximum capacitive load 500 pF No sustained oscillation 5
Delay discharge resistance RD 70 Ω 6
Comparator hysteresis (comparator 1, comparator 2) HYS 100 mV comparator 1, comparator 2 6
Gain (A3 versions) G 100 V/V A3 versions 5
Bandwidth (A3 versions) BW 400 kHz COUT = 500 pF 5
Slew rate SR 4 V/µs 5
Voltage noise density (RTI) 30 nV/√Hz 5
Supply voltage VS 6 V 4
Differential input voltage (IN+, IN–) VIN -40 40 V Differential (VIN+) – (VIN–) 4
Common-mode input voltage (IN+, IN–) 40 V Common-mode; minimum printed as GND – 0.3 V 4
Digital output ALERT1, ALERT2 6 V Minimum printed as GND – 0.3 V 4
Junction temperature TJ 150 °C 4
Storage temperature Tstg -65 150 °C 4
Common-mode input voltage VCM -0.1 12 36 V 4
Operating supply voltage VS 2.7 5 5.5 V 4
Operating free-air temperature TA -40 125 °C 4
Junction-to-ambient thermal resistance RθJA 110.2 °C/W PW (TSSOP), 14 pins 4
Junction-to-case (top) thermal resistance RθJC(top) 35.1 °C/W PW (TSSOP), 14 pins 4
Junction-to-board thermal resistance RθJB 53.2 °C/W PW (TSSOP), 14 pins 4
Junction-to-top characterization parameter ψJT 2.3 °C/W PW (TSSOP), 14 pins 4
Junction-to-board characterization parameter ψJB 52.4 °C/W PW (TSSOP), 14 pins 4

CAD (KiCad official)

  • Symbol: INA303A3QPWRQ1
  • Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
  • 3D model: TSSOP-14 (KiCad packages3D, STEP)
  • 3D model files: ina303a3qpwrq1-etched.step / ina303a3qpwrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina303a3qpwrq1.step / ina303a3qpwrq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (40 pp, sha256 9d26f5e6ff86755e, retrieved 2026-10-11, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF