component
LPA2104ASOF
Public Made by Adomby adom
LOWPOWER Audio Power OpAmps, SOP-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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README
markdownLPA2104ASOF
LOWPOWER · Audio Power OpAmps · SOP-8
LPA2104ASOF from LOWPOWER, in a SOP-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 | SD | input | Shutdown pin, active high. Drive above VSD_H (min 1.2 V at VDD=5 V) to enable the amplifier; drive below VSD_L (max 0.6 V) or to GND to place the device in shutdown (ILEAK ≈ 0.1 µA). |
| 2 | BYP | passive | Analog reference bypass pin, biased internally to approximately VDD/2. Connect a 1 µF ceramic capacitor from this pin to GND; the capacitor sets start-up time and improves PSRR/THD+N. |
| 3 | INP | input | Positive audio input of the amplifier. AC-couple through Ci (typ 0.22 µF) and series input resistor Ri (typ 20 kΩ) forming a high-pass filter with the internal input resistance; used differentially with INN or single-ended (tie the unused side to a Ci to GND). |
| 4 | INN | input | Negative audio input of the amplifier. AC-couple through Ci (typ 0.22 µF) and Ri (typ 20 kΩ). For single-ended input, still AC-couple this pin to signal ground through Ci/Ri. |
| 5 | VOP | output | Positive (non-inverting) Class-D BTL output. Connect directly to one speaker terminal; no LC output filter is required for speaker leads ≤ ~100 mm. Optionally add a ferrite bead + 1 nF to GND for EMI reduction. |
| 6 | VDD | power_in | Positive supply input, 2.5 V to 5.5 V operating (6.0 V absolute max). Decouple with 1 µF ceramic close to the pin and a bulk 22 µF capacitor nearby. |
| 7 | GND | power_in | Device ground return for supply, bias reference, and output stage. Connect to a solid ground plane; keep decoupling and bypass capacitors close to this pin. |
| 8 | VON | output | Negative (inverting) Class-D BTL output, 180° out of phase with VOP. Connect directly to the other speaker terminal; drives 4 Ω / 8 Ω loads with up to 3 W (10% THD, 5 V, 4 Ω). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LPA2104ASOF
CAD (KiCad official)
- Symbol:
LPA2104ASOF - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
lpa2104asof-etched.step/lpa2104asof-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lpa2104asof.step/lpa2104asof.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LOWPOWER datasheet (9 pp, sha256
79283b1d6b548b63, 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).