# INA280A3QDCKRQ1

**Texas Instruments** · Current-Sensing Amplifiers · SC-70-5

INA280A3QDCKRQ1 from Texas Instruments, in a SC-70-5. 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 | OUT | output | Output voltage pin, which must stay between GND - 0.3 V and VS + 0.3 V per the absolute maximum ratings. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | VS | power_in | Power supply pin, with a recommended operating supply range of 2.7 V to 20 V (absolute maximum 22 V). |
| 4 | IN+ | input | Connects to the supply side of the shunt resistor; common-mode voltage on the analog inputs is limited to -20 V to 122 V (absolute maximum). |
| 5 | IN- | input | Connects to the load side of the shunt resistor; differential input voltage between IN+ and IN- is limited to ±30 V (absolute maximum). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SC-70-5 |
| Category | Operational Amplifier/Comparator |
| Pins | 5 |

## 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 rejection ratio (DC) | CMRR | 120 | 140 |  | dB | VCM = 2.7 V to 120 V, TA = -40 °C to +125 °C | 5 |
| Offset voltage, input referred | Vos | -150 | 15 | 150 | µV |  | 5 |
| Offset voltage drift | dVos/dT |  |  | 1 | µV/℃ | TA = -40 °C to +125 °C | 5 |
| Power supply rejection ratio, input referred | PSRR | -10 | 1 | 10 | µV/V | VS = 2.7 V to 20 V, TA = -40 °C to +125 °C | 5 |
| Input bias current, IB+ | IB+ | 10 | 20 | 30 | µA | VSENSE = 0 mV | 5 |
| Input bias current, IB- | IB- | 10 | 20 | 30 | µA | VSENSE = 0 mV | 5 |
| Gain error |  | -0.5 | 0.1 | 0.5 | % | GND + 50 mV ≤ VOUT ≤ VS, 200 mV | 5 |
| Gain error drift |  |  | 2.5 | 20 | ppm/°C | TA = -40 °C to +125 °C | 5 |
| Maximum capacitive load |  |  |  | 500 | pF | No sustained oscillations, no isolation resistor | 5 |
| Swing to VS power supply rail (printed as VS, x V; values are offsets from VS) |  |  | -0.07 | -0.2 | V | RLOAD = 10 kΩ, TA = -40 °C to +125 °C; offset relative to VS | 5 |
| Swing to ground |  |  | 0.005 | 0.025 | V | RLOAD = 10 kΩ, VSENSE = 0 V, TA = -40 °C to +125 °C | 5 |
| Supply voltage | VS | 2.7 |  | 20 | V | TA = -40 °C to +125 °C | 5 |
| Quiescent current | IQ |  | 370 | 500 | µA |  | 5 |
| Quiescent current over temperature | IQ |  |  | 600 | µA | TA = -40 °C to +125 °C | 5 |
| Common-mode input range | VCM |  | 48 | 120 | V | Minimum printed as VS (supply-dependent); may go below VS under certain conditions (Figure 7-1) | 4 |
| Operating supply range | VS | 2.7 | 5 | 20 | V |  | 4 |
| Ambient temperature (operating) | TA | -40 |  | 125 | °C |  | 4 |
| Supply voltage (absolute maximum) | Vs | -0.3 |  | 22 | V |  | 4 |
| Analog inputs differential voltage |  | -30 |  | 30 | V | (VIN+), (VIN-) | 4 |
| Analog inputs common-mode voltage |  | -20 |  | 122 | V | VIN+, VIN-, common-mode | 4 |
| Output voltage |  | -0.3 |  | 0.3 | V | Printed as GND, 0.3 V (min) and VS + 0.3 V (max); values are offsets from GND and VS | 4 |
| Operating temperature (absolute maximum) | TA | -55 |  | 150 | °C |  | 4 |
| Junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Junction-to-ambient thermal resistance | RθJA |  | 191.6 |  | °C/W | DCK (SC-70), 5 pins | 4 |
| Junction-to-case (top) thermal resistance | RθJC(top) |  | 144.4 |  | °C/W | DCK (SC-70), 5 pins | 4 |
| Junction-to-board thermal resistance | RθJB |  | 69.2 |  | °C/W | DCK (SC-70), 5 pins | 4 |
| Junction-to-top characterization parameter | ΨJT |  | 46.2 |  | °C/W | DCK (SC-70), 5 pins | 4 |
| Junction-to-board characterization parameter | ΨJB |  | 69 |  | °C/W | DCK (SC-70), 5 pins | 4 |

## CAD (KiCad official)

- Symbol: `INA280A3QDCKRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SC-70-5 (KiCad packages3D, STEP)
- 3D model files: `ina280a3qdckrq1-etched.step` / `ina280a3qdckrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina280a3qdckrq1.step` / `ina280a3qdckrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/ina280-q1.pdf) (27 pp, sha256 `624dafd9c6984955`, retrieved 2026-10-31, tier: manufacturer)
- **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](docs/ina280a3qdckrq1-datasheet.pdf)