LF411CDR

@@ -0,0 +1,55 @@+# LF411CDR++**Texas Instruments** · Operational Amplifier · SOIC-8++LF411CDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | BAL1 | input | Offset null / balance pin 1. Connect a potentiometer (typ. 10 kΩ) between BAL1 and BAL2 with the wiper tied to VCC- to trim input offset voltage to zero. |+| 2 | IN- | input | Inverting input of the op-amp. High-impedance JFET input (~10^12 Ω), input bias current 50 pA typ. |+| 3 | IN+ | input | Non-inverting input of the op-amp. High-impedance JFET input (~10^12 Ω), input bias current 50 pA typ. |+| 4 | VCC- | power_in | Negative supply rail. Recommended operating range -3.5 V to -18 V; absolute maximum -18 V. In single-supply operation connect to GND. |+| 5 | BAL2 | input | Offset null / balance pin 2. Used with BAL1 and a trim potentiometer (wiper to VCC-) to null input offset voltage. |+| 6 | OUT | output | Op-amp output. Peak output-voltage swing ±13.5 V typ at RL=10 kΩ with ±15 V supplies; short-circuit protected (unlimited duration). |+| 7 | VCC+ | power_in | Positive supply rail. Recommended operating range 3.5 V to 18 V; absolute maximum 18 V. |+| 8 | NC | unconnected | No internal connection. Leave floating or tie to any convenient potential. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `LF411CDR`+- `LF411CDG4`+- `LF411CDRG4`+- `LF411ID`+- `LF411CP`+- `LF411CPE4`+- `LF411IP`++## CAD (KiCad official)++- Symbol: `LF411CDR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lf411c.pdf) (11 pp, sha256 `1e51951a18976c2b`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lf411cdr-datasheet.pdf)

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