# EG8546

**EG Micro** · Operational Amplifier · SOP-8

EG8546 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 | OUTA | output | Op-amp A output. |
| 2 | INA- | input | Op-amp A inverting (negative) input. |
| 3 | INA+ | input | Op-amp A non-inverting (positive) input. |
| 4 | GND | power_in | Ground / negative supply reference. |
| 5 | INB+ | input | Op-amp B non-inverting (positive) input. |
| 6 | INB- | input | Op-amp B inverting (negative) input. |
| 7 | OUTB | output | Op-amp B output. |
| 8 | VCC | power_in | Positive supply, 2.5 V to 5.5 V (absolute maximum 6 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | EG Micro |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 0 |  | 6 | V |  | 6 |
| Input voltage INA |  | 0 |  | 6 | V |  | 6 |
| Input voltage INB |  | 0 |  | 6 | V |  | 7 |
| Differential input voltage | Vdiff | -6 |  | 6 | V |  | 7 |
| Ambient temperature | TA | -45 |  | 125 | ℃ |  | 7 |
| Storage temperature | Tstr | -55 |  | 150 | ℃ |  | 7 |
| Soldering temperature | TL |  |  | 300 | ℃ | T=10S | 7 |
| Supply voltage (single supply operating range, from Features list) |  | 2.5 |  | 5.5 | V |  | 4 |
| Input voltage range | VCC | 2 | 5 | 5.5 | V | VCC=5V | 7 |
| Input noise current density | in |  |  | 0.1 | pA/√Hz |  | 8 |
| Input offset voltage | Vos |  | 1 |  | mV |  | 7 |
| Input offset voltage over temperature | Vos |  | 3.8 |  | mV | -40℃≤ TA ≤+125℃ | 7 |
| Input bias current | IB |  | 1 |  | pA |  | 7 |
| Input offset current | IOS |  | 1 |  | pA |  | 7 |
| Common-mode rejection ratio | CMRR |  | 80 |  | dB | VCM=0 to 4V | 7 |
| Common-mode rejection ratio over temperature | CMRR |  | 65 |  | dB | -40℃≤ TA ≤+125℃ | 7 |
| Large-signal voltage gain | Avo |  | 90 |  | V/mV | RL=600Ω, Vo=0.15V to 4.85V | 7 |
| Large-signal voltage gain | Avo |  | 75 |  | V/mV | -40℃≤ TA ≤+85℃ | 7 |
| Large-signal voltage gain | Avo |  | 60 |  | V/mV | -40℃≤ TA ≤+125℃ | 7 |
| Input offset voltage drift | ΔVOS /Δ T |  | 2.5 |  | uV/℃ | -40℃≤ TA ≤+125℃ | 7 |
| Input bias current drift | ΔIB /Δ T |  | 100 |  | fA/℃ | -40℃≤ TA ≤+85℃ | 7 |
| Input bias current drift | ΔIB /Δ T |  | 2000 |  | fA/℃ | -40℃≤ TA ≤+125℃ | 7 |
| Input offset current drift | ΔIOS /Δ T |  | 25 |  | fA/℃ | -40℃≤ TA ≤+125℃ | 7 |
| High-level output voltage | VOH |  | 4.965 |  | V | IL=1mA | 8 |
| High-level output voltage over temperature | VOH |  | 4.875 |  | V | -40℃≤ TA ≤+125℃ | 8 |
| Low-level output voltage | VOL |  | 25 |  | mV | IL=1mA | 8 |
| Low-level output voltage over temperature | VOL |  | 125 |  | mV | -40℃≤ TA ≤+125℃ | 8 |
| Output current | IOUT |  | 50 |  | mA |  | 8 |
| Closed-loop output impedance | ZOUT |  | 5.5 |  | Ω | f=200kHz, G=1 | 8 |
| Power supply rejection ratio | PSRR |  | 80 |  | dB | Vs=2.5V to 5.5V | 8 |
| Power supply rejection ratio over temperature | PSRR |  | 65 |  | dB | -40℃≤ TA ≤+125℃ | 8 |
| Supply current | ICC |  | 860 |  | uA | Iout=0, other inputs floating | 8 |
| Supply current over temperature | ICC |  | 1300 |  | uA | -40℃≤ TA ≤+125℃ | 8 |
| Slew rate | SR |  | 3.7 |  | V/us | G=1, 2V output | 8 |
| Full-power bandwidth | BWP |  | 250 |  | kHz | 1% distortion | 8 |
| Settling time | ts |  | 0.9 |  | us | to 0.1% (1V step) | 8 |
| Gain bandwidth product | GBP |  | 6 |  | MHZ |  | 8 |
| Phase margin | ΦM |  | 65 |  | Degrees |  | 8 |
| Voltage noise density | en |  | 13 |  | nV/√Hz | f=1kHz | 8 |

## CAD (KiCad official)

- Symbol: `EG8546`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `eg8546-etched.step` / `eg8546-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eg8546.step` / `eg8546.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`eg8546.step`](eg8546.step) | 122 KB | You want the bare part, or you mark your own boards. |
| [`eg8546-etched.step`](eg8546-etched.step) | 1.7 MB | You want the part with `EG8546` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 407 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:** [EG Micro datasheet](docs/eg8546-datasheet.pdf) (12 pp, sha256 `83929494eece7d00`, 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).

[Datasheet PDF](docs/eg8546-datasheet.pdf)