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See Technical Specifications

LM4809LDX/NOPB

105-mW, stereo, analog input headphone amplifier with active-low shutdown mode

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM4809LDX/NOPB
Datasheet:

LM4809LDX/NOPB Datasheet (PDF)
Output power (W):

0.105
Analog supply (min) (V):

2
Analog supply voltage (max) (V):

5.5
Load (min) (Ω):

16
EDA/CAD Models:

Request Free CAD Models for LM4809LDX/NOPB

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LM4809LDX/NOPB General Description

The LM4809 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω load 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.

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Key Features

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

Key Specifications

THD+N at 1kHz at 105mW Continuous Average Power into 16Ω 0.1% (typ)
THD+N at 1kHz at 70mW Continuous Average Power into 32Ω 0.1% (typ)
Shutdown Current 0.4µA (typ)

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Specifications

Output power (W)	0.105	Analog supply (min) (V)	2
Analog supply voltage (max) (V)	5.5	Load (min) (Ω)	16
PSRR (dB)	70	Rating	Catalog
Operating temperature range (°C)	-40 to 85	Headphone channels	Stereo
Volume control	No	Shutdown current (ISD) (µA)	0.4
Architecture	Class-AB	Iq per channel (typ) (mA)	0.7
feature-function	Headphone	feature-amplifier-type	Class-AB
feature-rail-to-rail		feature-typical-gain-bandwidth-product-mhz
feature-typical-psrr-db	70	feature-total-harmonic-distortion-noise	0.3%@32Ohm@50mW
feature-input-signal-type	Single	feature-output-signal-type	Single
feature-output-type	2-Channel Stereo	feature-maximum-output-current-ma
feature-maximum-input-offset-voltage-mv		feature-maximum-input-bias-current-ua
feature-maximum-power-dissipation-mw		feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	8
feature-cecc-qualified	No	feature-esd-protection
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-auto-motive	No
feature-p-pap	No	feature-eccn-code	EAR99
feature-svhc	Yes	feature-svhc-exceeds-threshold	No