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.

LM4808MXM
LM4808MX
LM4808MXMM
LM4808MXMMX
LM4808MXSD
LM4808MXSDX

CAD (KiCad official)

Symbol: LM4808MX
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

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).

Datasheet PDF