Headphone Amplifier. LM4809 Datasheet

LM4809 Amplifier. Datasheet pdf. Equivalent

Part LM4809
Description Dual 105mW Headphone Amplifier
Feature LM4809, LM4809LQBD www.ti.com SNAS126F – FEBRUARY 2001 – REVISED APRIL 2013 LM4809 Dual 105mW He.
Manufacture etcTI
Datasheet
Download LM4809 Datasheet

LM4809 Dual 105mW Headphone Amplifier with Active-Low Shutdo LM4809 Datasheet
LM4809, LM4809LQBD www.ti.com SNAS126F – FEBRUARY 2001 – R LM4809 Datasheet
LM4809, LM4809LQBD www.ti.com SNAS126F – FEBRUARY 2001 – R LM4809LQBD Datasheet
Recommendation Recommendation Datasheet LM4809 Datasheet





LM4809
LM4809, LM4809LQBD
www.ti.com
SNAS126F – FEBRUARY 2001 – REVISED APRIL 2013
LM4809
Dual 105mW Headphone Amplifier with Active-
Low Shutdown Mode
Check for Samples: LM4809, LM4809LQBD
FEATURES
1
2 Active-Low Shutdown Mode
• "Click and Pop" Reduction Circuitry
• Low Shutdown Current
• WSON, MSOP, and SOIC Surface Mount
Packaging
• No Bootstrap Capacitors Required
• Unity-Gain Stable
APPLICATIONS
• Headphone Amplifier
• Personal Computers
• Microphone Preamplifier
• PDA's
KEY SPECIFICATIONS
• THD+N at 1kHz at 105mW Continuous Average
Power into 160.1% (typ)
• THD+N at 1kHz at 70mW Continuous Average
Power into 320.1% (typ)
• Shutdown Current 0.4µA (typ)
DESCRIPTION
The LM4809 is a dual audio power amplifier capable
of delivering 105mW per channel of continuous
average power into a 16load with 0.1% (THD+N)
from a 5V power supply.
Boomer audio power amplifiers were designed
specifically to provide high quality output power with a
minimal amount of external components. Since the
LM4809 does not require bootstrap capacitors or
snubber networks, it is optimally suited for low-power
portable systems.
The unity-gain stable LM4809 can be configured by
external gain-setting resistors.
The LM4809 features an externally controlled, active-
low, micropower consumption shutdown mode, as
well as an internal thermal shutdown protection
mechanism.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2001–2013, Texas Instruments Incorporated



LM4809
LM4809, LM4809LQBD
SNAS126F – FEBRUARY 2001 – REVISED APRIL 2013
Typical Application
www.ti.com
*Refer to Application Information for information concerning proper selection of the input and output coupling
capacitors.
Figure 1. Typical Audio Amplifier Application Circuit
Connection Diagrams
Top View
Top View
Figure 2. VSSOP Package
See Package Number DGK0008A
Figure 3. SOIC Package
See Package Number D0008A
2
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Copyright © 2001–2013, Texas Instruments Incorporated
Product Folder Links: LM4809 LM4809LQBD





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