component
MC34119M
Public Unreviewedby Ray
HGSEMI 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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Contents
README
markdownMC34119M
HGSEMI · Audio Power OpAmps · SOP-8
MC34119M from HGSEMI, 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 | CD | input | Chip Disable digital input. Logic 0 (<0.8V) selects normal operation; logic 1 (>=2.0V) puts the device into low-power shutdown/mute mode. Input resistance typ 90kΩ (50-175kΩ). |
| 2 | FC2 | passive | Filter Capacitor 2. External capacitor here increases power-supply rejection and modifies turn-on time. Equivalent internal resistance ~25kΩ (18-40kΩ). |
| 3 | FC1/Vin+ | input | Filter Capacitor 1 / analog ground of the amplifier and non-inverting audio input. A 1.0µF cap here (with 5µF on Pin 2/FC2) gives ~52dB PSRR. Turn-on time is set by this cap; can also be used as an AC input. Equivalent internal resistance ~150kΩ (100-220kΩ). |
| 4 | Vin- | input | Inverting amplifier input. External input cap and input resistor set the low-frequency roll-off and input impedance. Feedback resistor connects this pin to Vo1 (pin 5) to set closed-loop gain (0 to 46dB range). |
| 5 | Vo1 | output | Output 1 of the BTL amplifier pair. DC level is approximately (Vcc-0.7V)/2. Drives one side of the speaker load. |
| 6 | Vcc | power_in | Positive supply. Operating range 2.0V to 16V (absolute max 18V). Quiescent current typ 2.7mA at 3V, 3.3mA at 16V; shutdown current typ 65µA. |
| 7 | GND | power_in | Ground return for the entire device. |
| 8 | Vo2 | output | Output 2 of the BTL amplifier pair. Same amplitude as Vo1 but 180° out of phase, forming a bridge-tied load with Vo1 to drive the speaker without a coupling capacitor. DC offset (Vo1-Vo2) typ 0mV (±30mV). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
MC34119M/TRMC34119NMC34119MM/TRMC34119DQ3/TR
CAD (KiCad official)
- Symbol:
MC34119M - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
mc34119m.step |
122 KB | You want the bare part, or you mark your own boards. |
mc34119m-etched.step |
1.7 MB | You want the part with MC34119M already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 425 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: HGSEMI datasheet (10 pp, sha256
06a0840578a5ce54, 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).