# INA284AIDR

**Texas Instruments** · Current Sense Amplifiers · SOIC-8

INA284AIDR from Texas Instruments, in a SOIC-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 | -IN | input | Negative differential input, connected to the low-potential side of the shunt resistor, with a common-mode range of -14 V to +80 V. |
| 2 | GND | power_in | Ground pin; all reference and output voltages of the device are referenced to GND. |
| 3 | REF2 | input | Reference voltage connection (one of two) that must stay between GND and V+, with the average of REF1 and REF2 at 9 V or less. |
| 4 | NC | unconnected | Not internally connected; leave floating or connect to GND. |
| 5 | OUT | output | Current-sense output voltage, which swings to about 0.04 V above GND and about 0.4 V below V+ at RL = 10 kΩ with V+ = 5 V, and tolerates up to 1 nF capacitive load without sustained oscillation. |
| 6 | V+ | power_in | Power supply pin with a specified range of +2.7 V to +18 V and quiescent current of 900 µA maximum. |
| 7 | REF1 | input | Reference voltage connection (one of two) that must stay between GND and V+, with the average of REF1 and REF2 at 9 V or less. |
| 8 | +IN | input | Positive differential input, connected to the high-potential side of the shunt resistor, with a common-mode range of -14 V to +80 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Offset voltage, RTI | VOS | -70 | 20 | 70 | μV | VSENSE=0mV | 3 |
| Offset voltage drift vs temperature | dVOS/dT | -1.5 | 0.3 | 1.5 | μV/°C |  | 3 |
| Common-mode input range | VCM | -14 |  | 80 | V |  | 3 |
| Common-mode rejection ratio | CMRR | 120 | 140 |  | dB | V+IN=-14V to +80V, VSENSE=0mV | 3 |
| Reference voltage rejection (INA284) |  | -25 | 6 | 25 | μV/V | VREF1=VREF2=40mV to 9V, V+=18V | 3 |
| Divider accuracy |  | -0.5 | 0.2 | 0.5 | % |  | 3 |
| Gain error |  | -1.6 | 0.4 | 1.6 | % |  | 3 |
| Gain drift vs temperature |  |  | 0.0008 | 0.005 | %/°C |  | 3 |
| Nonlinearity error |  | -0.01 |  | 0.01 | % |  | 3 |
| Quiescent current | IQ |  | 600 | 900 | μA |  | 4 |
| Specified supply voltage range | VS | 2.7 |  | 18 | V |  | 4 |
| Specified temperature range |  | -40 |  | 125 | °C |  | 4 |
| Reference input voltage range |  | 0 |  |  | V |  | 3 |
| Maximum capacitive load |  |  |  | 1 | nF | No sustained oscillation | 4 |
| Supply voltage (absolute maximum) |  |  |  | 18 | V |  | 2 |
| Differential voltage (V+IN)-(V-IN) |  | -5 |  | 5 | V | (V+IN)-(V-IN) | 2 |
| Analog input common-mode voltage |  | -14 |  | 80 | V | V+IN, V-IN common-mode | 2 |
| Input current to any pin |  |  |  | 5 | mA |  | 2 |
| Storage temperature |  | -65 |  | 150 | °C |  | 2 |
| Junction temperature |  |  |  | 150 | °C |  | 2 |
| ESD rating, Human Body Model (HBM) |  |  |  | 3000 | V | HBM | 2 |
| ESD rating, Charged Device Model (CDM) |  |  |  | 1000 | V | CDM | 2 |
| ESD rating, Machine Model (MM) |  |  |  | 200 | V | MM | 2 |
| Input bias current, per pin | IB |  | 25 |  | μA | VSENSE=0mV | 3 |
| Input offset current | IOS |  | 1 |  | μA | VSENSE=0mV | 3 |
| Differential input impedance |  |  | 6 |  | kΩ |  | 3 |
| Reference input gain |  |  | 1 |  | V/V |  | 3 |
| Gain (INA284) | G |  | 500 |  | V/V | V+=+12V | 3 |
| Power-supply rejection ratio | PSRR |  | 3 |  | μV/V | VS=+2.7V to +18V, VSENSE=0mV | 3 |
| Effective bandwidth (INA284) |  |  | 4 |  | kHz |  | 4 |
| Voltage noise density, RTI |  |  | 110 |  | nV/√Hz | 1 kHz | 4 |
| Thermal resistance, junction-to-ambient | θJA |  | 134.9 |  | °C/W |  | 2 |
| Thermal resistance, junction-to-case (top) | θJCtop |  | 72.9 |  | °C/W |  | 2 |
| Thermal resistance, junction-to-board | θJB |  | 61.3 |  | °C/W |  | 2 |
| Junction-to-top characterization parameter | ψJT |  | 18.9 |  | °C/W |  | 2 |
| Junction-to-board characterization parameter | ψJB |  | 54.3 |  | °C/W |  | 2 |

## CAD (KiCad official)

- Symbol: `INA284AIDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina284aidr-etched.step` / `ina284aidr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina284aidr.step` / `ina284aidr.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/cn/lit/gpn/ina286) (38 pp, sha256 `f4ba33e9202a62d5`, retrieved 2026-10-08, 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](docs/ina284aidr-datasheet.pdf)