LM4811 具有数字音量控制和停机模式的 LM4811 双路 105mW 耳机放大器

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 optimally suited for low-power portable systems. In addition, the LM4911/LM4911Q may be configured for either single-ended capacitively coupled outputs or for OCL outputs (patent pending).

The LM4911/LM4911Q features a low-power consumption shutdown mode and a power mute mode that allows for faster turn on time with less than 1mV voltage change at outputs on release

LM4811 功能框图

	LM4811
Headphone Channels	Stereo
Supply Max (Max) (Volt)	5.5
Supply Min (Min) (Volt)	2
Output Power (W)	0.145
Load (Min) (ohms)	16
ISD (uA)	0.1
PSRR (dB)	65

LM4811 特性

OCL or capacitively coupled outputs (patent pending)
External gain-setting capability
Available in space-saving MSOP and LD 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 AE-Q100 grade 2 qualified

LM4811 器件用途

Portable CD players
PDAs
Portable electronics devices
Automotive