component
LR2904D
Public Unreviewedby Ray
LRC Operational Amplifier, SOIC-8. Datasheet-verified pinout, 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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Contents
README
markdownLR2904D
LRC · Operational Amplifier · SOIC-8
LR2904D from LRC, 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 | OUTPUT 1 | output | Output of op-amp channel 1. Can swing from 0V to approximately Vcc-1.5V. Output short-circuit current typically 40 mA, source current up to 40 mA, sink current up to 13 mA at Vo=2V. |
| 2 | INPUT 1- | input | Inverting input of op-amp channel 1. Input bias current typically 45 nA (max 250 nA), input offset current typically 5 nA. Input common-mode range includes ground (0V) up to Vcc-1.5V. |
| 3 | INPUT 1+ | input | Non-inverting input of op-amp channel 1. Input bias current typically 45 nA. Input common-mode voltage range includes ground; upper limit is Vcc-1.5V. |
| 4 | GND | power_in | Ground / negative supply (Vee). In single-supply operation this is 0V; in split-supply operation this connects to the negative rail. Supply differential (Vcc - Vee) must be 3V to 26V (absolute max 30V). |
| 5 | INPUT 2+ | input | Non-inverting input of op-amp channel 2. Input bias current typically 45 nA. Input common-mode range includes ground up to Vcc-1.5V. |
| 6 | INPUT 2- | input | Inverting input of op-amp channel 2. Input bias current typically 45 nA (max 250 nA), input offset current typically 5 nA. |
| 7 | OUTPUT 2 | output | Output of op-amp channel 2. Can swing from 0V to approximately Vcc-1.5V. Output short-circuit current typically 40 mA. Channel separation from channel 1 is typically 120 dB (f = 1 kHz to 20 kHz). |
| 8 | Vcc | power_in | Positive supply voltage. Operating range Vcc = 3V to 26V single-supply, or ±1.5V to ±13V split-supply. Absolute maximum ±15V single or 30V differential. Typical supply current 0.5 mA at Vcc=5V, 0.8 mA at Vcc=25V (RL=∞). Bypass locally with a decoupling capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOIC-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LR2904DD
CAD (KiCad official)
- Symbol:
LR2904D - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lr2904d.step |
122 KB | You want the bare part, or you mark your own boards. |
lr2904d-etched.step |
1.7 MB | You want the part with LR2904D already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 414 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (7 pp, sha256
6621c1f0759f20e9, retrieved 2026-08-17, tier: lcsc) - 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).