

Overview
The LM4890S is an audio Amplifier made by IDCHIP in a MSOP-8 package with 8 pins. -40℃~+85℃ 0.1% 1-Channel 1Wx1@8Ω 2.2V~5.5V 2.6mA 62dB Automatic mute/no-noise switch、Enable/shutdown function MSOP-8 Audio Amplifiers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM4890S_C329452, from EasyEDA) and its footprint (Package_SO:MSOP-8_3x3mm_P0.65mm, from KiCad's library), ready for a KiCad board. 14,026 are in stock at JLCPCB (part C329452). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
10- Supply, least
- 2.2 V · VDD, recommended operating, min · p. 3
- Supply, most
- 5.5 V · VDD, recommended operating, max · p. 3
- Supply, absolute maximum
- 5.5 V · VDD, absolute maximum · p. 3
- Works from
- -40 °C · ambient operating temperature, min · p. 3
- Works up to
- 85 °C · ambient operating temperature, max · p. 3
- Junction, hottest
- 150 °C · junction temperature, absolute maximum · p. 3
- Takes working
- 2.6 mA · VDD = 5 V, quiescent, VIN = 0 V, no load, typical · p. 4
- Takes asleep
- 100 nA · VDD = 5 V, shutdown, VSHUTDOWN = 0 V, typical · p. 4
- Junction to case (MSOP)
- 56 K/W · junction to case · p. 3
- Junction to air (MSOP)
- 190 K/W · junction to ambient · p. 3
Parameters
14- Current - Supply
- 2.6mA
- Features
- Enable/shutdown function
- Junction Temperature(Max)
- 150℃
- Operating Temperature
- -40℃~+85℃
- Output Power
- 1Wx1@8Ω
- Power Supply Rejection Ratio (PSRR)
- 62dB
- Quiescent Current
- 2.6mA
- Speaker Channels
- 1-Channel
- Standby Current
- 100nA
- Thermal Resistance(Junction to Ambient)
- 190℃/W
- Thermal Resistance(Junction to Case)
- 56℃/W
- Total Harmonic Distortion + Noise (THD+N)
- 0.1%
- Voltage - Supply
- 2.2V~5.5V
- Voltage - Supply(Absolute Max)
- 5.5V
Order codes
1- LM4890SLCSC C329452
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | nSHUTDOWN | Unspecified |
| 2 | BYPASS | Unspecified |
| 3 | +IN | Unspecified |
| 4 | -IN | Unspecified |
| 5 | Vo1 | Unspecified |
| 6 | VDD | Unspecified |
| 7 | GND | Unspecified |
| 8 | Vo2 | Unspecified |
Open-source boards using it
All 2- 2 layers90 × 100 mm

- 4 layers50 × 70 mm

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Is there a KiCad symbol and footprint for the LM4890S?
Yes. The symbol is EasyEDA_Cloud:LM4890S_C329452 and the footprint Package_SO:MSOP-8_3x3mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM4890S?
MSOP-8, with 8 pins. Its footprint is drawn on this page.
Where is the LM4890S datasheet?
IDCHIP publishes it: the Datasheet link on this page opens it.
Where can I order the LM4890S?
JLCPCB lists it as part C329452, with 14,026 in stock; the sellers' links on this page open their listings.
What can replace the LM4890S?
Parts like it in the library: the NS4150B by Shenzhen Nsiway Tech, the LM4890SS by IDCHIP, the LN4890MME-G by NATLINEAR and the PAM8302AASCR by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM4890S?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8NS4150B
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