# OPA337UA

**Texas Instruments** · Pre-ordered Chips · SOIC-8

OPA337UA 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 | NC | unconnected | No connection. |
| 2 | −In | input | Inverting input; common-mode range extends from (V-) - 0.2V to (V+) - 1.2V and input current should be limited to less than 10mA. |
| 3 | +In | input | Noninverting input; common-mode range extends from (V-) - 0.2V to (V+) - 1.2V and input current should be limited to less than 10mA. |
| 4 | V− | power_in | Negative power supply (ground in single-supply operation). |
| 5 | NC | unconnected | No connection. |
| 6 | Output | output | Rail-to-rail output swing, within 125mV of the rails at RL = 25kΩ, with short-circuit current of ±9mA. |
| 7 | V+ | power_in | Positive power supply, 2.7V to 5.5V specified (operation down to 2.5V), to be bypassed with a 0.01µF ceramic capacitor. |
| 8 | NC | unconnected | No connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Interface ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | -3 | 0.5 | 3 | mV |  | 3 |
| Input Offset Voltage over temperature | VOS | -3.5 |  | 3.5 | mV | TA = -40°C to +85°C | 3 |
| Power-Supply Rejection Ratio | PSRR |  | 25 | 125 | µV/V | VS = 2.7V to 5.5V | 3 |
| Power-Supply Rejection Ratio over temperature | PSRR |  |  | 125 | µV/V | TA = -40°C to +85°C, VS = 2.7V to 5.5V | 3 |
| Input Bias Current | IB | -10 | 0.2 | 10 | pA |  | 3 |
| Input Offset Current | IOS | -10 | 0.2 | 10 | pA |  | 3 |
| Common-Mode Voltage Range | VCM | -0.2 |  |  | V | TA = -40°C to +85°C; max is (V+) - 1.2 | 3 |
| Common-Mode Rejection Ratio | CMRR | 74 | 90 |  | dB | -0.2V < VCM < (V+) - 1.2V | 3 |
| Common-Mode Rejection Ratio over temperature | CMRR | 74 |  |  | dB | TA = -40°C to +85°C, -0.2V < VCM < (V+) - 1.2V | 3 |
| Open-Loop Voltage Gain | AOL | 100 | 120 |  | dB | RL = 25kΩ, 125mV < VO < (V+) - 125mV | 3 |
| Open-Loop Voltage Gain over temperature | AOL | 100 |  |  | dB | TA = -40°C to +85°C, RL = 25kΩ, 125mV < VO < (V+) - 125mV | 3 |
| Open-Loop Voltage Gain | AOL | 100 | 114 |  | dB | RL = 5kΩ, 500mV < VO < (V+) - 500mV | 3 |
| Voltage Output Swing from Rail |  |  | 40 | 125 | mV | RL = 25kΩ, AOL ≥ 100dB | 4 |
| Voltage Output Swing from Rail over temperature |  |  |  | 125 | mV | TA = -40°C to +85°C, RL = 25kΩ, AOL ≥ 100dB | 4 |
| Voltage Output Swing from Rail |  |  | 150 | 500 | mV | RL = 5kΩ, AOL ≥ 100dB | 4 |
| Voltage Output Swing from Rail over temperature |  |  |  | 500 | mV | TA = -40°C to +85°C, RL = 5kΩ, AOL ≥ 100dB | 4 |
| Specified Voltage Range | VS | 2.7 |  | 5.5 | V | TA = -40°C to +85°C | 4 |
| Quiescent Current (per amplifier) | IQ |  | 0.525 | 1 | mA | IO = 0 | 4 |
| Quiescent Current (per amplifier) over temperature | IQ |  |  | 1.2 | mA | TA = -40°C to +85°C, IO = 0 | 4 |
| Input Offset Voltage Drift | dVOS/dT |  | 2 |  | µV/°C |  | 3 |
| Channel Separation (dual versions) |  |  | 0.3 |  | µV/V | dc | 3 |
| Input Voltage Noise |  |  | 6 |  | µVPP | f = 0.1Hz to 10Hz | 3 |
| Input Voltage Noise Density | en |  | 26 |  | nV/√Hz | f = 1kHz | 3 |
| Current Noise Density | in |  | 0.6 |  | fA/√Hz | f = 1kHz | 3 |
| Gain-Bandwidth Product | GBW |  | 3 |  | MHz | VS = 5V, G = 1 | 3 |
| Slew Rate | SR |  | 1.2 |  | V/µs | VS = 5V, G = 1 | 3 |
| Settling Time 0.1% |  |  | 2 |  | µs | VS = 5V, 2V Step, CL = 100pF, G = 1 | 3 |
| Settling Time 0.01% |  |  | 2.5 |  | µs | VS = 5V, 2V Step, CL = 100pF, G = 1 | 3 |
| Overload Recovery Time |  |  | 2 |  | µs | VIN × G = VS | 3 |
| Total Harmonic Distortion + Noise | THD+N |  | 0.001 |  | % | VS = 5V, VO = 3VPP, G = 1, f = 1kHz | 3 |
| Short-Circuit Current |  |  | 9 |  | mA | ±9 mA as printed | 4 |
| Minimum Operating Voltage |  |  | 2.5 |  | V |  | 4 |
| Specified Temperature Range |  | -40 |  | 85 | °C |  | 4 |
| Operating Temperature Range |  | -55 |  | 125 | °C |  | 4 |
| Supply Voltage |  |  |  | 7.5 | V |  | 2 |
| Input Voltage |  | -0.5 |  | 0.5 | V | (V-) - 0.5V to (V+) + 0.5V, relative to supply rails | 2 |
| Input Current |  |  |  | 10 | mA |  | 2 |
| Operating Temperature |  | -55 |  | 125 | °C |  | 2 |
| Storage Temperature |  | -55 |  | 125 | °C |  | 2 |
| Junction Temperature |  |  |  | 150 | °C |  | 2 |
| Lead Temperature |  |  |  | 300 | °C | soldering, 10s | 2 |
| Thermal Resistance | θJA |  | 150 |  | °C/W | SO-8 Surface-Mount | 4 |

## CAD (KiCad official)

- Symbol: `OPA337UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa337ua-etched.step` / `opa337ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa337ua.step` / `opa337ua.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/opa337ua.pdf) (27 pp, sha256 `ca8c0e50ff50d972`, retrieved 2026-10-26, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/opa337ua-datasheet.pdf)