TL081 JFET-Input Op-Amp

@@ -0,0 +1,54 @@+# TL081++**Texas Instruments** · Operational Amplifier · SOIC-8++The TL081 is a single JFET-input operational amplifier. Its JFET inputs give high input impedance and low bias current, and its 13 V/us slew rate and 3 MHz bandwidth suit active filters, integrators, sample-and-hold, and general single-op-amp signal conditioning. It is the single member of the TL08x family alongside the dual TL082 and quad TL084.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | OFFSET N1 | input | Input offset-voltage adjustment. Connect the ends of an external trim potentiometer (typ. 10 kΩ) between OFFSET N1 (pin 1) and OFFSET N2 (pin 5), with the wiper tied to VCC-. Leave open if offset trim is not required. |+| 2 | IN- | input | Inverting input of the op-amp. JFET-gate input; ultra-low input bias current. Common-mode input range extends to VCC+ (per datasheet features). |+| 3 | IN+ | input | Non-inverting input of the op-amp. JFET-gate input; ultra-low input bias current. Common-mode input range extends to VCC+. |+| 4 | VCC- | power_in | Negative supply rail. For split-supply operation, tie to the negative rail; for single-supply operation, tie to GND. Total supply (VCC+) − (VCC-) must be between 4.5 V and 40 V (10 V to 30 V for NS/PS packages and TL08xM). |+| 5 | OFFSET N2 | input | Input offset-voltage adjustment. Second end of the external offset-null potentiometer (see OFFSET N1). Leave open if offset trim is not required. |+| 6 | OUT | output | Op-amp output. Short-circuit protected to ground (continuous, one amplifier per package). Drives loads referenced between VCC- and VCC+. |+| 7 | VCC+ | power_in | Positive supply rail. Recommended supply (VCC+) − (VCC-) is 4.5 V to 40 V (10 V to 30 V for NS/PS packages and TL08xM). Bypass with a local ceramic capacitor to VCC- (or GND for single-supply). |+| 8 | NC | unconnected | Do not connect. No internal bond wire. Leave floating on the PCB. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Single JFET-input op-amp |+| Supply voltage | +-2.25 V to +-18 V (4.5 V to 36 V single) |+| Input bias current | 30 pA typ |+| Slew rate | 13 V/us typ |+| Gain-bandwidth product | 3 MHz typ |+| Input offset voltage | 3 mV typ |+| Operating temperature | 0 C to 70 C |++## Ordering variants++- `TL081P`+- `TL081D`+- `TL081PS`+- `TL081DBV`+- `TL081DCK`++## CAD (KiCad official)++- Symbol: `tl081.kicad_sym`+- Footprint: `tl081.kicad_mod`+- 3D model: SOIC-8 body from KiCad `Package_SO/SOIC-8_3.9x4.9mm_P1.27mm`.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tl081.pdf) (78 pp, sha256 `6a831542dbeee1d7`, 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/tl081-datasheet.pdf)

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