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INA199A2RSWR
Public Made by Adomby adom
Texas Instruments Current Sense Amplifiers, UQFN-10(1.4x1.8). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownINA199A2RSWR
Texas Instruments · Current Sense Amplifiers · UQFN-10(1.4x1.8)
INA199A2RSWR from Texas Instruments, in a UQFN-10(1.4x1.8). 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 | NC | unconnected | No internal connection; leave floating or connect to any voltage between GND and V+. |
| 2 | IN+ | input | Analog input connected to the supply side of the shunt resistor; both IN+ pins on the RSW package must be tied together, and the INA199A common-mode range is -0.3 V to 26 V. |
| 3 | IN+ | input | Analog input connected to the supply side of the shunt resistor; tie to the other IN+ pin (pin 2) on the RSW package, with the INA199A common-mode range of -0.3 V to 26 V. |
| 4 | IN- | input | Analog input connected to the load side of the shunt resistor; both IN- pins on the RSW package must be tied together, and the INA199A common-mode range is -0.3 V to 26 V. |
| 5 | IN- | input | Analog input connected to the load side of the shunt resistor; tie to the other IN- pin (pin 4) on the RSW package, with the INA199A common-mode range of -0.3 V to 26 V. |
| 6 | V+ | power_in | Supply pin operating from 2.7 V to 26 V; bypass close to this pin with 0.01 µF to 0.1 µF (0.1 µF recommended). |
| 7 | NC | unconnected | No internal connection; leave floating or connect to any voltage between GND and V+. |
| 8 | REF | input | Reference voltage input that may be set anywhere from 0 V to V+ and should be buffered by an op amp if driven through a resistor divider; absolute maximum range is GND - 0.3 V to (V+) + 0.3 V. |
| 9 | GND | power_in | Analog ground. |
| 10 | OUT | output | Voltage output whose swing is limited by the supply pin voltage (about 0.2 V below V+ and 0.05 V above GND at 10 kΩ load); absolute maximum range is GND - 0.3 V to (V+) + 0.3 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | UQFN-10(1.4x1.8) |
| Category | Amplifiers/Comparators |
| Pins | 10 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Common-mode input voltage range (version A) | VCM | -0.3 | 26 | V | Version A, TA = -40°C to 125°C | 6 | |
| Operating supply voltage | VS | 2.7 | 26 | V | TA = -40°C to 125°C | 6 | |
| Operating supply voltage | VS | 2.5 | 26 | V | TA = -20°C to 85°C | 6 | |
| Quiescent current | IQ | 65 | 100 | μA | VSENSE = 0mV | 6 | |
| Quiescent current over temperature range | IQ | 115 | μA | TA = -40°C to 125°C | 6 | ||
| Input offset voltage, RTI | VOS | -150 | 5 | 150 | μV | VSENSE = 0mV | 6 |
| Offset voltage drift | dVOS/dT | 0.1 | 0.5 | μV/°C | TA = -40°C to 125°C | 6 | |
| Gain error (version A) | G | -1.5 | 0.03 | 1.5 | % | Version A, VSENSE = -5mV to 5mV, TA = -40°C to 125°C | 6 |
| Gain error drift | 3 | 10 | ppm/°C | TA = -40°C to 125°C | 6 | ||
| Common-mode rejection ratio | CMR | 100 | 120 | dB | VIN+ = 0V to 26V, VSENSE = 0mV, TA = -40°C to 125°C | 6 | |
| Output swing to GND | VGND | 0.005 | 0.05 | V | RL = 10kΩ to GND, TA = -40°C to 125°C; printed (VGND)+0.005 and (VGND)+0.05 | 6 | |
| Output swing to V+ rail | V+ | -0.05 | -0.2 | V | Relative to V+ rail; RL = 10kΩ to GND, TA = -40°C to 125°C; printed (V+)-0.05 and (V+)-0.2 | 6 | |
| Maximum capacitive load | 1 | nF | No sustained oscillation | 6 | |||
| Common-mode input voltage (recommended) | VCM | 12 | V | Natural convection ambient unless noted | 5 | ||
| Operating supply voltage (recommended, applied to V+) | VS | 5 | V | Natural convection ambient unless noted | 5 | ||
| Operating ambient temperature range | TA | -40 | 125 | °C | Natural convection ambient | 5 | |
| Specified temperature range | -40 | 125 | °C | 6 | |||
| Operating temperature range | -40 | 125 | °C | 6 | |||
| Junction-to-ambient thermal resistance (RSW, UQFN 10-pin) | RθJA | 107.3 | °C/W | Thermal table, RSW (UQFN) package | 5 | ||
| Junction-to-case (top) thermal resistance (RSW) | RθJC(top) | 56.5 | °C/W | RSW (UQFN) package | 5 | ||
| Junction-to-board thermal resistance (RSW) | RθJB | 18.7 | °C/W | RSW (UQFN) package | 5 | ||
| Junction-to-top characterization parameter (RSW) | ψJT | 1.1 | °C/W | RSW (UQFN) package | 5 | ||
| Junction-to-board characterization parameter (RSW) | ψJB | 18.7 | °C/W | RSW (UQFN) package | 5 | ||
| Thermal resistance, UQFN (electrical characteristics table) | θJA | 80 | °C/W | UQFN package | 7 | ||
| Gain-bandwidth product (INA199x2) | GBW | 30 | kHz | CLOAD = 10pF, INA199x2 | 6 | ||
| Gain (INA199x2) | G | 100 | V/V | INA199x2 | 6 | ||
| Slew rate | SR | 0.4 | V/μs | 6 | |||
| Input voltage noise density, RTI | 25 | nV/√Hz | 6 | ||||
| Input bias current | IB | 28 | μA | VSENSE = 0mV | 6 | ||
| Input offset current | IOS | 0.02 | μA | VSENSE = 0mV | 6 | ||
| Power-supply rejection | PSR | 0.1 | μV/V | VS = 2.7V to 18V, VIN+ = 18V, VSENSE = 0mV | 6 | ||
| Nonlinearity error | 0.01 | % | VSENSE = -5mV to 5mV | 6 |
CAD (KiCad official)
- Symbol:
INA199A2RSWR - Footprint:
Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm - 3D model: UQFN-10(1.4x1.8) (KiCad packages3D, STEP)
- 3D model files:
ina199a2rswr-etched.step/ina199a2rswr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina199a2rswr.step/ina199a2rswr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (43 pp, sha256
f48fb5be37c0cf43, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).