component
LM4808MX
Public Made by Adomby adom
Texas Instruments Audio Power OpAmps, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownLM4808MX
Texas Instruments · Audio Power OpAmps · SOIC-8
LM4808MX from Texas Instruments, in a SOIC-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 | OUT A | output | Channel A audio power amplifier output. Drives headphone/speaker loads down to 16 Ω (105 mW typ at 5 V) or 32 Ω (70 mW typ at 5 V) via an output coupling capacitor. Max output current 70 mA (typ). |
| 2 | IN A (-) | input | Channel A inverting audio input. AC-coupled through Ci; the input resistor Ri and feedback resistor Rf set the closed-loop gain (Av = -Rf/Ri). Input bias current ~10 pA typ; input capacitance ~3 pF. |
| 3 | IN A (+) | input | Channel A non-inverting audio input. Typically biased to VDD/2 through the RB divider (100 kΩ / 100 kΩ) with a bypass cap CB for half-supply bias. Common-mode range 0 V to 4.3 V (at VDD = 5 V). |
| 4 | GND | power_in | Ground reference for the device. All voltages are measured with respect to this pin. |
| 5 | IN B (+) | input | Channel B non-inverting audio input. Typically biased to VDD/2 via the shared RB half-supply divider with CB bypass. Common-mode range 0 V to 4.3 V (at VDD = 5 V). |
| 6 | IN B (-) | input | Channel B inverting audio input. AC-coupled through Ci; the input resistor Ri and feedback resistor Rf set the closed-loop gain (Av = -Rf/Ri). |
| 7 | OUT B | output | Channel B audio power amplifier output. Drives headphone/speaker loads down to 16 Ω via an output coupling capacitor CO. Max output current 70 mA (typ); output resistance ~0.1 Ω. |
| 8 | VDD | power_in | Positive supply voltage. Operating range 2.0 V to 5.5 V; absolute max 6.0 V. Supply current 1.2 mA typ (3.0 mA max) at VDD = 5 V with VIN = 0 V. Decouple with a 0.1 µF bypass cap (CS) close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM4808MXMLM4808MXLM4808MXMMLM4808MXMMXLM4808MXSDLM4808MXSDX
CAD (KiCad official)
- Symbol:
LM4808MX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm4808mx-etched.step/lm4808mx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4808mx.step/lm4808mx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (25 pp, sha256
9990400495229cee, retrieved 2026-08-17, tier: manufacturer) - 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).