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LM49100GR/NOPB |LM49100GRNOPBNSN/a200avaiMono Class AB Audio Sub-System with a True-Ground Headphone Amplifier 25-csBGA -40 to 85


LM49100GR/NOPB ,Mono Class AB Audio Sub-System with a True-Ground Headphone Amplifier 25-csBGA -40 to 85 SNAS392F –JUNE 2007–REVISED MAY 2013Connection Diagrams1 2 3 4 5AVDDCP GNDCP MIN+ BYPASS RINB C1N ..
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LM49100GR/NOPB
Mono Class AB Audio Sub-System with a True-Ground Headphone Amplifier
LM49100
www.ti.com
SNAS392F–JUNE 2007–REVISED MAY 2013
LM49100 Mono Class AB Audio Sub-System witha True-
Ground Headphone Amplifier
Checkfor Samples: LM49100
1FEATURES APPLICATIONS Mono and Stereo Inputs • Mobile Phones Thermal Overload Protection • PDAs True-Ground Headphone Drivers • LaptopsI2C Control Interface • Portable Electronics Input Mute Attenuation DESCRIPTION• 2nd Stage Headphone Attenuator
The LM49100isa fully integrated audio subsystem• 32-Step Digital Volume Control capableof delivering 1.275Wof continuous average• 10 Operating Modes power intoa mono 8Ω bridged-tied load (BTL) with THD+N and witha 5V power supply. The• Minimum External Components
LM49100 also hasa stereo true-ground headphone• Click and Pop Suppression amplifier capableof 50mW per channelof continuous• Micro-Power Shutdown average power intoa 32Ω single-ended (SE) loads
with 1% THD+N.• Availablein Space-Saving 3mmx 3mm
25-Bump csBGA Package
The LM49100 has three input channels. One pairof RF Suppression SE inputs canbe used witha stereo signal. The other
input channelis fully differential and may be used
witha mono input signal. The LM49100 featuresaKEY SPECIFICATIONS
32-step digital volume control and ten distinct output• Power Outputat VDD= 5V: modes. The mixer, volume control, and device mode Loudspeaker (LS): select are controlled through anI2C compatible
interface.– RL= 8Ω, THD+N≤: 1% 1.275W Headphone (VDDHP= 2.8V): Thermal overload protection prevent the device from
being damaged during fault conditions. Superior click– RL= 32Ω, THD+N≤ 1%: 50mW and pop suppression eliminates audible transientson• Shutdown current 0.01μA power-up/down and during shutdown.
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