component
LM4881MX
Public Made by Adomby adom
Texas Instruments Audio Power OpAmps, SOIC-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
markdownLM4881MX
Texas Instruments · Audio Power OpAmps · SOIC-8
LM4881MX from Texas Instruments, in a SOIC-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 | OUT A | output | Amplifier A output, coupled to the load through an output capacitor, drives 8Ω to 32Ω loads (200 mW typ into 8Ω at 0.1% THD). |
| 2 | IN A | input | Amplifier A inverting input, gain set by Rf/Ri and coupled through an input capacitor Ci. |
| 3 | BYPASS | passive | Half-supply bypass pin where capacitor CB (1.0 µF recommended) provides filtering and sets turn-on click and pop performance. |
| 4 | GND | power_in | Ground reference for the device; all voltages are measured with respect to this pin. |
| 5 | SHUTDOWN | input | Shutdown control, logic high (VDD) turns the amplifier off (0.7 µA typ), logic low enables it, trigger point is about half supply, and it must not be left floating. |
| 6 | IN B | input | Amplifier B inverting input, gain set by Rf/Ri and coupled through an input capacitor Ci. |
| 7 | OUT B | output | Amplifier B output, coupled to the load through an output capacitor, drives 8Ω to 32Ω loads (200 mW typ into 8Ω at 0.1% THD). |
| 8 | VDD | power_in | Positive supply, 2.7V to 5.5V operating range (6.0V absolute maximum), bypassed with a capacitor placed close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Operational Amplifier/Comparator |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Power (RL = 8 Ω, THD = 0.1% max) | PO | 125 | 200 | mW | THD = 0.1% (max); f = 1 kHz; RL = 8Ω; VDD = 5V | 4 | |
| Quiescent Current | IDD | 3.6 | 6 | mA | VIN = 0V, IO = 0A | 3 | |
| Shutdown Current | ISD | 0.7 | 5 | µA | VPIN1 = VDD | 3 | |
| Offset Voltage | VOS | 5 | 50 | mV | VIN = 0V | 3 | |
| Power Supply Voltage | VDD | 2.7 | 5.5 | V | 3 | ||
| Supply Voltage (operating) | VDD | 2.7 | 5.5 | V | 3 | ||
| Operating Temperature Range | TA | -40 | 85 | °C | TMIN ≤ TA ≤ TMAX | 3 | |
| Supply Voltage (absolute maximum) | VDD | 6 | V | 3 | |||
| Storage Temperature | TSTG | -65 | 150 | °C | 3 | ||
| Input Voltage | VIN | -0.3 | V | Upper limit VDD + 0.3V | 3 | ||
| Junction Temperature | TJ | 150 | °C | 3 | |||
| ESD Susceptibility (human body model) | 2000 | V | Human body model, 100 pF discharged through 1.5 kΩ | 3 | |||
| ESD Susceptibility (machine model) | 200 | V | Machine model, 220 pF-240 pF discharged through all pins | 3 | |||
| Thermal Resistance Junction-to-Ambient (SOIC) | θJA | 170 | °C/W | SOIC package, board mounted | 3 | ||
| Thermal Resistance Junction-to-Case (SOIC) | θJC | 35 | °C/W | SOIC package | 3 |
CAD (KiCad official)
- Symbol:
LM4881MX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm4881mx-etched.step/lm4881mx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4881mx.step/lm4881mx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
26d785feb917172e, retrieved 2026-10-29, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).