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LM4991MA on a board, in 3D

LM4991MA

Texas Instruments

-40℃~+85℃ 0.2% 1-Channel 1.5Wx1@8Ω 2.2V~5.5V 3mA 64dB Automatic mute/no-noise switch、Enable/shutdown function Class AB SOIC-8 Audio Amplifiers ROHS

Extended
DatasheetJLCPCBLCSCti/LM4991MA
Category
Audio Amplifiers
Package
SOIC-8
Pins
8

Overview

The LM4991MA is an audio Amplifier made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+85℃ 0.2% 1-Channel 1.5Wx1@8Ω 2.2V~5.5V 3mA 64dB Automatic mute/no-noise switch、Enable/shutdown function Class AB SOIC-8 Audio Amplifiers ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM4991MA_NOPB, from EasyEDA) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C2860134). 2 open-source boards in 2 repositories on GitHub use it.

Symbol

SHUTDOWN1BYPASS2IN+3IN-4VO15VDD6GND7VO28
EasyEDA_Cloud:LM4991MA_NOPBFrom EasyEDA

Footprint

12345678
Package_SO:SOIC-8_3.9x4.9mm_P1.27mmFrom KiCad's library

Parameters

9
Class
Class AB
Features
Automatic mute/no-noise switch；Enable/shutdown function
Operating Temperature
-40℃~+85℃
Output Power
1.5Wx1@8Ω
Power Supply Rejection Ratio (PSRR)
64dB
Quiescent Current
3mA
Speaker Channels
1-Channel
Total Harmonic Distortion + Noise (THD+N)
0.2%
Voltage - Supply
2.2V~5.5V

Order codes

1

Pinout

8
The pins of the LM4991MA
PinNameType
1SHUTDOWNUnspecified
2BYPASSUnspecified
3IN+Unspecified
4IN-Unspecified
5VO1Unspecified
6VDDUnspecified
7GNDUnspecified
8VO2Unspecified

Open-source boards using it

All 2
  • 4 layers100 × 83 mmModule17-Mainboard, the printed circuit board in 3D

    Module17-Mainboard

    M17-Project/Module_17

    M17 modem board for 9600-baud capable radios

    209 parts129CERN-OHL-W-2.0
  • 2 layers51.8 × 71.7 mmAltera Vector adapter V2, the printed circuit board in 3D

    Altera Vector adapter V2

    james10952001/FPGA-mini-vector-arcade

    Vector game daughter board for the Altera EP2C5T144 Cyclone II "mini board"

    57 parts4GPL-3.0

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Questions

Is there a KiCad symbol and footprint for the LM4991MA?

Yes. The symbol is EasyEDA_Cloud:LM4991MA_NOPB and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM4991MA?

SOIC-8, with 8 pins. Its footprint is drawn on this page.

Where is the LM4991MA datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LM4991MA?

JLCPCB lists it as part C2860134, with 0 in stock; the sellers' links on this page open their listings.

What can replace the LM4991MA?

Parts like it in the library: the TC8002D by FM, the LM833D by onsemi, the LM4871MX by Texas Instruments and the FM8002E by Shenzhen Fuman Elec. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM4991MA?

2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8