# TL084

**Texas Instruments** · Operational Amplifier · SOIC-14

The TL084 packs four JFET-input operational amplifiers into a single 14-pin body. The JFET inputs give high input impedance and low bias current, and the 13 V/us slew rate suits active filter banks, multichannel signal conditioning, and audio. It is the quad member of the TL08x family.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OUT | output | Output of amplifier 1. |
| 2 | 1IN- | input | Inverting input of amplifier 1. |
| 3 | 1IN+ | input | Non-inverting input of amplifier 1. |
| 4 | VCC+ | power_in | Positive power supply. Range: ±2.25V to ±20V split, or 4.5V to 40V single-supply, referenced to VCC-. |
| 5 | 2IN+ | input | Non-inverting input of amplifier 2. |
| 6 | 2IN- | input | Inverting input of amplifier 2. |
| 7 | 2OUT | output | Output of amplifier 2. |
| 8 | 3OUT | output | Output of amplifier 3. |
| 9 | 3IN- | input | Inverting input of amplifier 3. |
| 10 | 3IN+ | input | Non-inverting input of amplifier 3. |
| 11 | VCC- | power_in | Negative power supply (or GND in single-supply operation). Total supply (VCC+ to VCC-) between 4.5V and 40V. |
| 12 | 4IN+ | input | Non-inverting input of amplifier 4. |
| 13 | 4IN- | input | Inverting input of amplifier 4. |
| 14 | 4OUT | output | Output of amplifier 4. |

## Key specifications

| Parameter | Value |
|---|---|
| Type | Quad 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

Same part, different packaging or reel option.

- `TL084N`
- `TL084D`
- `TL084PW`
- `TL084DYY`
- `TL084J`
- `TL084FK`

## CAD (KiCad official)

- Symbol: `tl084.kicad_sym`
- Footprint: `tl084.kicad_mod`
- 3D model: SOIC-14 body from KiCad `Package_SO/SOIC-14_3.9x8.7mm_P1.27mm`.
- 3D model files: `tl084-etched.step` / `tl084-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tl084.step` / `tl084.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/tl084.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/tl084-datasheet.pdf)