component
EG8305
Public Made by Adomby adom
EG Micro 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
markdownEG8305
EG Micro · Audio Power OpAmps · SOP-8
EG8305 from EG Micro, 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 | CTRL | input | Chip enable / shutdown control input. Pulling this pin high (typ. VIH ≥ 1 V at VDD=5.0 V) enables the amplifier; low (VIL ≤ 0.7 V) puts the device into shutdown (ISD < 1 µA). |
| 2 | BYPASS | input | Internal reference / bias bypass capacitor node. Connect a 1 µF ceramic capacitor from this pin to GND to filter the internal mid-rail reference for low-noise operation. |
| 3 | INP | input | Differential audio input, positive side. AC-couple the audio source through Ci (typ. 0.1 µF) to this pin; internal input resistor Ri ≈ 20 kΩ, external Re typically 30 kΩ to set closed-loop gain up to 25 dB. |
| 4 | INN | input | Differential audio input, negative side. AC-couple through Ci (typ. 0.1 µF); usually tied to signal ground through the same 30 kΩ / 0.1 µF network as INP for single-ended sources. |
| 5 | VON | output | Class-D bridge-tied-load (BTL) output, negative side. Drives one terminal of the speaker (4 Ω or 8 Ω). Half of the H-bridge with high-side PMOS / low-side NMOS RDS(on) ≈ 465 mΩ at VDD=5 V. |
| 6 | VDD | power_in | Supply voltage input, 3.0 V to 5.5 V (absolute max 6.0 V). Decouple with a 1 µF ceramic close to the pin and an additional 10 µF bulk capacitor for low-frequency noise rejection. |
| 7 | GND | power_in | Device ground. Return for supply decoupling and speaker filter capacitors; connect to the board power ground plane. |
| 8 | VOP | output | Class-D bridge-tied-load (BTL) output, positive side. Drives the other terminal of the speaker; complements VON to deliver up to 3 W into 4 Ω at 5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EG Micro |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
EG8305 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
eg8305-etched.step/eg8305-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eg8305.step/eg8305.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EG Micro datasheet (11 pp, sha256
accdf75a68f48226, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).