# INA296A4IDR

**TEXAS INSTRUMENTS** · Global Sourcing Parts · SOIC-8

INA296A4IDR 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 current-sense amplifier input: connect to the load side of the sense resistor for high-side use, or to the ground side for low-side use; the common-mode range is -5 V to 110 V. |
| 2 | GND | power_in | Device ground reference; the REF1 and REF2 inputs are specified from 0 V to VS relative to this pin. |
| 3 | REF2 | input | Reference 2 input, specified from 0 V to VS; with 0 V differential input the output is set to the average of REF1 and REF2, so it is tied to a supply, ground, or low-impedance reference, or to the other REF pin through a divider. |
| 4 | NC | unconnected | Reserved pin; the datasheet states it must be connected to ground. |
| 5 | OUT | output | Output voltage of the amplifier, referenced to the REF pin voltage; absolute maximum range is GND - 0.3 V to VS + 0.3 V. |
| 6 | VS | power_in | Power supply input, specified at 2.7 V to 20 V (absolute maximum 22 V). |
| 7 | REF1 | input | Reference 1 input, specified from 0 V to VS; with 0 V differential input the output is set to the average of REF1 and REF2, so it is tied to a supply, ground, or low-impedance reference, or to the other REF pin through a divider. |
| 8 | IN+ | input | Positive current-sense amplifier input: connect to the bus-voltage side of the sense resistor for high-side use, or to the load side for low-side use; the common-mode range is -5 V to 110 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TEXAS INSTRUMENTS |
| Package | SOIC-8 |
| Category | Global Sourcing Parts |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating supply voltage | VS | 2.7 | 5 | 20 | V |  | 4 |
| Common-mode input range | VCM | -5 | 48 | 110 | V |  | 4 |
| Ambient temperature | TA | -40 |  | 125 | °C |  | 4 |
| Supply voltage | VS |  |  | 22 | V |  | 4 |
| Differential input voltage | (VIN+)-(VIN-) | -30 |  | 30 | V |  | 4 |
| Common-mode input voltage | VIN+, VIN- | -20 |  | 120 | V |  | 4 |
| Operating temperature | TA | -55 |  | 150 | °C |  | 4 |
| Junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Junction-to-ambient thermal resistance (D, SOIC-8) | RθJA |  | 122.9 |  | °C/W | D (SOIC) 8-pin package | 4 |
| Junction-to-case (top) thermal resistance (D, SOIC-8) | RθJC(top) |  | 54.7 |  | °C/W | D (SOIC) 8-pin package | 4 |
| Junction-to-board thermal resistance (D, SOIC-8) | RθJB |  | 68.8 |  | °C/W | D (SOIC) 8-pin package | 4 |
| Junction-to-top characterization parameter (D, SOIC-8) | ΨJT |  | 12.2 |  | °C/W | D (SOIC) 8-pin package | 4 |
| Junction-to-board characterization parameter (D, SOIC-8) | ΨJB |  | 67.5 |  | °C/W | D (SOIC) 8-pin package | 4 |
| Common-mode input range | VCM | -5 |  | 110 | V | VIN+, VIN- = -5V to 110V, VSENSE = 0mV, TA = -40°C to 125°C | 5 |
| Common-mode rejection ratio (INA296A) | CMRR | 150 | 166 |  | dB | VIN+, VIN- = -5V to 110V, VSENSE = 0mV, TA = -40°C to 125°C, INA296A | 5 |
| Input offset voltage (INA296A4) | Vos | -10 | 3 | 10 | µV | VSENSE = 0mV, INA296A3, INA296A4 | 5 |
| Input offset voltage drift (INA296A3/A4/A5) | dVos/dT | -100 | 20 | 100 | nV/°C | TA = -40°C to 125°C, INA296A3, INA296A4, INA296A5 | 5 |
| Power-supply rejection ratio (INA296A3/A4/A5) | PSRR | -0.5 | 0.06 | 0.5 | µV/V | VS = 2.7V to 20V, VSENSE = 0mV, VREF1 = VREF2 = 1V, TA = -40°C to 125°C, INA296A3, INA296A4, INA296A5 | 5 |
| Input bias current | IB | 25 | 35 | 45 | µA | IB+, IB-, VSENSE = 0mV | 5 |
| Gain error (INA296A4/A5) | GERR | -0.015 | 0.003 | 0.015 | % | (GND + 50mV) < VOUT < (VS - 200mV), INA296A4, INA296A5 | 6 |
| Gain error drift (INA296A4/A5) |  | -2 | 0.1 | 2 | ppm/°C | TA = -40°C to +125°C, INA296A4, INA296A5 | 6 |
| Nonlinearity error |  | -0.001 |  | 0.001 | % |  | 6 |
| Maximum capacitive load |  |  |  | 1 | nF | No sustained oscillation, no isolation resistor | 6 |
| Output swing to GND |  |  | 8 | 20 | mV | RL = 10kΩ to GND, VSENSE = 0mV, VREF1 = VREF2 = 0V, TA = -40°C to 125°C | 6 |
| Reference voltage rejection ratio (INA296A2/A3/A4/A5) | RVRR | -1.5 | 0.5 | 1.5 | µV/V | VREF1 = VREF2 = 0.5V to 4.5V, TA = -40°C to 125°C, INA296A2, INA296A3, INA296A4, INA296A5 | 6 |
| Reference divider accuracy (INA296A3/A4/A5) |  | -0.01 | 0.002 | 0.01 | % | VSENSE = 0mV, VOUT = /(VREF1 + VREF2)//2, VREF1 = VS, VREF2 = GND or VREF1 = GND, VREF2 = VS, TA = -40°C to 125°C, INA296A3, INA296A4, INA296A5 | 6 |

## CAD (KiCad official)

- Symbol: `INA296A4IDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina296a4idr-etched.step` / `ina296a4idr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina296a4idr.step` / `ina296a4idr.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/cn/lit/ds/symlink/ina296a.pdf?ts=1739839221519) (43 pp, sha256 `23c51027cd011056`, retrieved 2026-10-19, 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/ina296a4idr-datasheet.pdf)