Datasheet4U Logo Datasheet4U.com

LM4890 - 1 Watt Audio Power Amplifier

General Description

The LM4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

Key Features

  • 1.
  • 2 Available in Space-Saving Packages: DSBGA, VSSOP, SOIC, and WSON.
  • Ultra Low Current Shutdown Mode.
  • BTL Output Can Drive Capacitive Loads.
  • Improved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions.
  • 2.2 - 5.5V Operation.
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required.
  • Thermal Shutdown Protection.
  • Unity-Gain Stable.
  • External Gain Configuration Capabil.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM4890 1 Watt Audio Power Amplifier National Semiconductor
LM4891 1 Watt Audio Power Amplifier National Semiconductor
LM4892 1 Watt Audio Power Amplifier National Semiconductor
LM4893 1.1 Watt Audio Power Amplifier National Semiconductor
LM4894 1Watt Fully Differential Audio Power Amplifier National Semiconductor

Other Datasheets by Texas Instruments

Part Number Description
LM4890M 1 Watt Audio Power Amplifier
LM4890MM 1 Watt Audio Power Amplifier
LM4890MMX 1 Watt Audio Power Amplifier
LM4890MX 1 Watt Audio Power Amplifier
LM4898 1 Watt Fully Differential Audio Power Amplifier

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM4890 www.ti.com SNAS138L – SEPTEMBER 2001 – REVISED MAY 2013 LM4890 1 Watt Audio Power Amplifier Check for Samples: LM4890 FEATURES 1 •2 Available in Space-Saving Packages: DSBGA, VSSOP, SOIC, and WSON • Ultra Low Current Shutdown Mode • BTL Output Can Drive Capacitive Loads • Improved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions • 2.2 - 5.5V Operation • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required • Thermal Shutdown Protection • Unity-Gain Stable • External Gain Configuration Capability APPLICATIONS • Mobile Phones • PDAs • Portable Electronic Devices KEY SPECIFICATIONS • PSRR at 217Hz, VDD = 5V (Fig. 1): 62dB(typ.) • Power Output at 5.0V & 1% THD: 1W(typ.) • Power Output at 3.3V & 1% THD: 400mW(typ.