# OPA2328DR

**Texas Instruments** · Operational Amplifier · SOIC-8

OPA2328DR 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 | OUT A | output | Output of channel A; output short-circuit to ground is continuous, one amplifier per package. |
| 2 | -IN A | input | Inverting input of channel A; input current is limited to ±10 mA and input voltage must stay between (V-) - 0.3 V and (V+) + 0.3 V. |
| 3 | +IN A | input | Noninverting input of channel A; input voltage must stay between (V-) - 0.3 V and (V+) + 0.3 V. |
| 4 | V- | power_in | Negative (lowest) power supply; single-supply operation is 2.2 V to 5.5 V, or dual-supply ±1.1 V to ±2.75 V. |
| 5 | +IN B | input | Noninverting input of channel B; input voltage must stay between (V-) - 0.3 V and (V+) + 0.3 V. |
| 6 | -IN B | input | Inverting input of channel B; input current is limited to ±10 mA and input voltage must stay between (V-) - 0.3 V and (V+) + 0.3 V. |
| 7 | OUT B | output | Output of channel B; output short-circuit to ground is continuous, one amplifier per package. |
| 8 | V+ | power_in | Positive (highest) power supply; supply voltage (V+) - (V-) must not exceed 6 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage, VS = (V+), (V-) | VS | -0.3 |  | 6 | V |  | 6 |
| Input current (INA+, INA-, INB+, INB-, INSA/B, OUTSA/B/1/2/3) |  | -10 |  | 10 | mA |  | 6 |
| Operating temperature | TA | -55 |  | 150 | °C |  | 6 |
| Junction temperature | TJ | -55 |  | 150 | °C |  | 6 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 6 |
| Supply voltage, single-supply | VS | 2.2 |  | 5.5 | V | Single-supply | 6 |
| Supply voltage, dual-supply (magnitude ±) | VS | 1.1 |  | 2.75 | V | Dual-supply, printed as ±1.1 V to ±2.75 V | 6 |
| Specified temperature | TA | -40 |  | 125 | °C |  | 6 |
| Junction-to-ambient thermal resistance (D, SOIC, 8 pins) | RθJA |  | 123.9 |  | °C/W | OPA2328 D (SOIC) package | 7 |
| Junction-to-case (top) thermal resistance (D, SOIC, 8 pins) | RθJC(top) |  | 63.1 |  | °C/W | OPA2328 D (SOIC) package | 7 |
| Junction-to-board thermal resistance (D, SOIC, 8 pins) | RθJB |  | 67.4 |  | °C/W | OPA2328 D (SOIC) package | 7 |
| Junction-to-top characterization parameter (D, SOIC, 8 pins) | ΨJT |  | 15.7 |  | °C/W | OPA2328 D (SOIC) package | 7 |
| Junction-to-board characterization parameter (D, SOIC, 8 pins) | ΨJB |  | 66.6 |  | °C/W | OPA2328 D (SOIC) package | 7 |
| Input offset voltage | VOS | -50 | 3 | 50 | µV | OPA2328 and OPA4328 | 8 |
| Input offset voltage drift | dVOS/dT | -1 | 0.15 | 1 | µV/°C | TA = -40°C to +125°C; OPA2328D | 8 |
| Power-supply rejection ratio | PSRR | -10 | 1 | 10 | µV/V | VS = ±1.1 V to ±2.75 V | 8 |
| Power-supply rejection ratio | PSRR | -40 | 15 | 40 | µV/V | VS = ±1.1 V to ±2.75 V, TA = -40°C to +125°C | 8 |
| Input bias current | IB | -1 | 0.2 | 1 | pA |  | 8 |
| Input bias current | IB |  |  | 10 | pA | TA = 0°C to 85°C | 8 |
| Input bias current | IB |  |  | 100 | pA | TA = -40°C to +125°C | 8 |
| Input offset current | IOS | -1 | 0.2 | 1 | pA |  | 8 |
| Input offset current | IOS |  |  | 10 | pA | TA = 0°C to 85°C | 8 |
| Input offset current | IOS |  |  | 100 | pA | TA = -40°C to +125°C | 8 |
| Common-mode rejection ratio | CMRR | 106 | 120 |  | dB | (V-), 0.1 V < VCM < (V+) + 0.1 V | 8 |
| Common-mode rejection ratio | CMRR | 96 | 110 |  | dB | TA = -40°C to +125°C | 8 |
| Open-loop voltage gain | AOL | 108 | 132 |  | dB | (V-) + 100 mV < VO < (V+), 100 mV | 8 |
| Open-loop voltage gain | AOL | 96 | 130 |  | dB | TA = -40°C to +125°C | 8 |
| Open-loop voltage gain | AOL | 106 | 123 |  | dB | (V-) + 200 mV < VO < (V+), 200 mV, RL = 2 kΩ | 8 |
| Open-loop voltage gain | AOL | 90 |  |  | dB | TA = -40°C to +125°C | 8 |
| Voltage output swing from both rails | VOUT |  |  | 5 | mV | VS = 2.2 V | 9 |
| Voltage output swing from both rails | VOUT |  |  | 15 | mV | VS = 2.2 V, RL = 2 kΩ | 9 |
| Quiescent current per amplifier | IQ |  | 3.8 | 4.5 | mA | IO = 0 A | 9 |
| Quiescent current per amplifier | IQ |  |  | 5 | mA | IO = 0 A, TA = -40°C to +125°C | 9 |

## CAD (KiCad official)

- Symbol: `OPA2328DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa2328dr-etched.step` / `opa2328dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa2328dr.step` / `opa2328dr.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/opa2328.pdf) (49 pp, sha256 `3aacb7bd421e0047`, retrieved 2026-10-17, 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/opa2328dr-datasheet.pdf)