Stereo 40mW Low Noise Headphone Amplifier
LM4911, LM4911Q
www.ti.com
SNAS152M – MAY 2004 – REVISED JUNE 2011
LM4911/LM4911Q
Stereo 40mW Low Noise Headphone
A...
Description
LM4911, LM4911Q
www.ti.com
SNAS152M – MAY 2004 – REVISED JUNE 2011
LM4911/LM4911Q
Stereo 40mW Low Noise Headphone
Amplifier with Selectable Capacitive Coupled or OCL Output
Check for Samples: LM4911, LM4911Q
FEATURES
1
2 OCL or Capacitively Coupled Outputs (Patent Pending)
External Gain-Setting Capability Available in Space-Saving VSSOP and WSON
Packages Ultra Low Current Shutdown Mode Mute Mode Allows Fast Turn-on (1ms) with
Less Than 1mV Change on Outputs 2V - 5.5V Operation Ultra Low Noise LM4911QMM is an Automotive Grade Product
that is AEC-Q100 Grade 2 Qualified.
APPLICATIONS
Portable CD Players PDAs Portable Electronics Devices Automotive
KEY SPECIFICATIONS
PSRR at 217Hz and 1kHz 65 dB (typ)
Output Power at 1kHz with VDD = 2.4V, 1% THD+N into a 16Ω Load 25 mW (typ)
Output Power at 1kHz with VDD = 3V, 1% THD+N into a 16Ω Load 40 mW (typ)
Shutdown Current 2.0 µA (max)
Output Voltage Change on Release from Shutdown VDD = 2.4V, RL = 16Ω (C-Coupled) 1 mV (max)
Mute Current 100 µA (max)
DESCRIPTION
The LM4911/LM4911Q is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16Ω load or 25mW per channel into a 32Ω load at 1% THD+N from a 3V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4911/LM4911Q does not require bootstrap capacitors or snubber networks, it is opti...
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