LM49100 Series

1.275-W, mono, 50-mW stereo, analog input Class-AB audio amplifier

Catalog

1.275-W, mono, 50-mW stereo, analog input Class-AB audio amplifier

Part	Operating Temperature [Max]	Operating Temperature [Min]	Type	Package / Case	Max Output Power x Channels @ Load	Max Output Power x Channels @ Load	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Features	Mounting Type	Supplier Device Package
Texas Instruments LM49100GRX/NOPB	85 °C	-40 °C	Class AB	25-TFBGA CSPBGA	0.072 W	1.575 W	2.7 V	5.5 V	1-Channel (Mono) with Stereo Headphones	Depop Differential Inputs I2C Shutdown Thermal Protection Volume Control	Surface Mount	25-CSBGA (3x3)
Texas Instruments LM49100GR/NOPB	85 °C	-40 °C	Class AB	25-TFBGA CSPBGA	0.072 W	1.575 W	2.7 V	5.5 V	1-Channel (Mono) with Stereo Headphones	Depop Differential Inputs I2C Shutdown Thermal Protection Volume Control	Surface Mount	25-CSBGA (3x3)

Catalog

1.275-W, mono, 50-mW stereo, analog input Class-AB audio amplifier

Key Features

• Mono and Stereo InputsThermal Overload ProtectionTrue-Ground Headphone DriversI2C Control InterfaceInput Mute Attenuation2nd Stage Headphone Attenuator32-Step Digital Volume Control10 Operating ModesMinimum External ComponentsClick and Pop SuppressionMicro-Power ShutdownAvailable in Space-Saving 3mm x 3mm25-Bump csBGA PackageRF SuppressionMono and Stereo InputsThermal Overload ProtectionTrue-Ground Headphone DriversI2C Control InterfaceInput Mute Attenuation2nd Stage Headphone Attenuator32-Step Digital Volume Control10 Operating ModesMinimum External ComponentsClick and Pop SuppressionMicro-Power ShutdownAvailable in Space-Saving 3mm x 3mm25-Bump csBGA PackageRF Suppression

Description

The LM49100 is a fully integrated audio subsystem capable of delivering 1.275W of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and with a 5V power supply. The LM49100 also has a stereo true-ground headphone amplifier capable of 50mW per channel of continuous average power into a 32Ω single-ended (SE) loads with 1% THD+N. The LM49100 has three input channels. One pair of SE inputs can be used with a stereo signal. The other input channel is fully differential and may be used with a mono input signal. The LM49100 features a 32-step digital volume control and ten distinct output modes. The mixer, volume control, and device mode select are controlled through an I2C compatible interface. Thermal overload protection prevent the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM49100 is a fully integrated audio subsystem capable of delivering 1.275W of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and with a 5V power supply. The LM49100 also has a stereo true-ground headphone amplifier capable of 50mW per channel of continuous average power into a 32Ω single-ended (SE) loads with 1% THD+N. The LM49100 has three input channels. One pair of SE inputs can be used with a stereo signal. The other input channel is fully differential and may be used with a mono input signal. The LM49100 features a 32-step digital volume control and ten distinct output modes. The mixer, volume control, and device mode select are controlled through an I2C compatible interface. Thermal overload protection prevent the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.