component
LM318MX
Public Made by Adomby adom
Texas Instruments Operational Amplifier, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM318MX
Texas Instruments · Operational Amplifier · SOIC-8
LM318MX 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 | BAL/COMP-1 | passive | Balance/Compensation terminal 1; used with external components for offset balancing or feedforward compensation to boost slew rate beyond 150 V/µs. |
| 2 | IN- | input | Inverting input; differential input voltage must be limited to ±1 V without series resistance due to internal back-to-back protection diodes; max differential input current ±10 mA. |
| 3 | IN+ | input | Non-inverting input; input voltage range ±11.5 V with VS = ±15 V; input bias current 150 nA typ (500 nA max) for LM318-N. |
| 4 | V- | power_in | Negative power supply; operating range −5 V to −20 V; bypass with 0.1 µF disc capacitor. |
| 5 | BAL/COMP-3 | passive | Balance/Compensation terminal 3; used with external RC network for overcompensation or to reduce 0.1% settling time to under 1 µs. |
| 6 | OUTPUT | output | Output; swing ±12 V min / ±13 V typ with VS = ±15 V and RL = 2 kΩ; slew rate 50 V/µs min (70 V/µs typ) at AV = 1. |
| 7 | V+ | power_in | Positive power supply; operating range +5 V to +20 V; supply current 5 mA typ / 10 mA max at 25 °C; bypass with 0.1 µF disc capacitor. |
| 8 | COMP-2 | passive | Compensation terminal 2; used with external capacitor for feedforward compensation in inverting applications to achieve slew rates over 150 V/µs. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM318MX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm318mx-etched.step/lm318mx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm318mx.step/lm318mx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
f430ca27aed6ab8a, retrieved 2026-09-25, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-4-6(text+vision), consensusclaude-opus-4-7(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).