component
LM4871N
Public Made by Adomby adom
HGSEMI Audio Amplifiers, DIP-8. Pinout cross-checked by two models against the datasheet, 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
markdownLM4871N
HGSEMI · Audio Amplifiers · DIP-8
LM4871N from HGSEMI, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Shutdown | input | Shutdown control pin; a high level puts the amplifier into shutdown with no output, and it must be held low for normal operation and must not be left floating. |
| 2 | Bypass | passive | Internal common-mode voltage pin that requires an external 1μF bypass capacitor, with 0.1μF to 1μF ceramic recommended for this node. |
| 3 | +IN | input | Non-inverting audio input. |
| 4 | -IN | input | Inverting audio input. |
| 5 | VO1 | output | Audio output 1, one half of the BTL bridge-tied load output driving the speaker. |
| 6 | VDD | power_in | Positive power supply, specified at 1.9 V to 5.5 V with the absolute maximum rating of 6.0 V. |
| 7 | GND | power_in | Power supply ground. |
| 8 | VO2 | output | Audio output 2, the other half of the BTL bridge-tied load output driving the speaker. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-8 |
| Category | Amplifiers/Comparators |
| 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 | VDD | 1.9 | 5.5 | V | 4 | ||
| Operating voltage (absolute maximum) | VDD | 6 | V | 3 | |||
| Storage temperature | Tstg | -65 | 150 | ℃ | 3 | ||
| Input voltage | -0.3 | V | upper limit printed as +(0.3+VCC) | 3 | |||
| Junction temperature | 160 | ℃ | 3 | ||||
| Pin temperature (soldering) | TLEAD | 260 | ℃ | soldering, 10s | 3 | ||
| Output offset voltage | Vos | 2 | mV | 4 | |||
| Quiescent current | IQ | 2 | mA | VDD=5V, IO=0 | 4 | ||
| Shutdown current | ISD | 0.1 | μA | VDD=2.5, 5.5V | 4 | ||
| Output power PO (THD=10%) | PO | 2.9 | W | f=1kHz, RL=4Ω, THD=10%, VDD=5V | 4 | ||
| Output power PO (THD=10%) | PO | 2 | W | f=1kHz, RL=4Ω, THD=10%, VDD=4.2V | 4 | ||
| Output power PO (THD=10%) | PO | 1.6 | W | f=1kHz, RL=4Ω, THD=10%, VDD=3.7V | 4 | ||
| Output power PO (THD=1%) | PO | 2.3 | W | f=1kHz, RL=4Ω, THD=1%, VDD=5V | 4 | ||
| Output power PO (THD=1%) | PO | 1.6 | W | f=1kHz, RL=4Ω, THD=1%, VDD=4.2V | 4 | ||
| Output power PO (THD=1%) | PO | 1.3 | W | f=1kHz, RL=4Ω, THD=1%, VDD=3.7V | 4 | ||
| Output power PO (THD=10%) | PO | 1.72 | W | f=1kHz, RL=8Ω, THD=10%, VDD=5V | 4 | ||
| Output power PO (THD=10%) | PO | 1.2 | W | f=1kHz, RL=8Ω, THD=10%, VDD=4.2V | 4 | ||
| Output power PO (THD=10%) | PO | 0.93 | W | f=1kHz, RL=8Ω, THD=10%, VDD=3.7V | 4 | ||
| Output power PO (THD=1%) | PO | 1.39 | W | f=1kHz, RL=8Ω, THD=1%, VDD=5V | 4 | ||
| Output power PO (THD=1%) | PO | 0.97 | W | f=1kHz, RL=8Ω, THD=1%, VDD=4.2V | 4 | ||
| Output power PO (THD=1%) | PO | 0.75 | W | f=1kHz, RL=8Ω, THD=1%, VDD=3.7V | 4 | ||
| Total harmonic distortion plus noise | THD+N | 0.23 | % | VDD=5V, RL=4Ω, PO=1.8W | 4 | ||
| Total harmonic distortion plus noise | THD+N | 0.08 | % | VDD=5V, RL=8Ω, PO=1W | 4 | ||
| Power supply rejection ratio | PSRR | 80 | dB | Input ac-grounded with Cin=0.47μF, VDD=5V, f=217Hz | 4 | ||
| Power supply rejection ratio | PSRR | 70 | dB | Input ac-grounded with Cin=0.47μF, VDD=5V, f=20kHz | 4 | ||
| Output noise voltage | Vn | 35 | μV | Input ac-grounded with Cin=0.47μF, VDD=5V | 4 | ||
| Signal-to-noise ratio | SNR | 98 | dB | VDD=5V, f=1kHz, THD=1% | 4 | ||
| Shutdown pin high-level input voltage | VSD_H | 0.8 | V | VDD=5V | 4 | ||
| Shutdown pin low-level input voltage | VSD_L | 0.5 | V | VDD=5V | 4 | ||
| Wake-up time | TWU | 200 | ms | 4 |
CAD (KiCad official)
- Symbol:
LM4871N - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
lm4871n-etched.step/lm4871n-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4871n.step/lm4871n.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (14 pp, sha256
a25a10a33327c2dd, retrieved 2026-10-17, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).