LM49200 Series

500-mW, stereo, analog input Class-AB audio amplifier & I2C control

Catalog

500-mW, stereo, analog input Class-AB audio amplifier & I2C control

Part	Mounting Type	Output Type	Features	Package / Case	Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Max Output Power x Channels @ Load	Supplier Device Package
Texas Instruments LM49200TLX/NOPB	Surface Mount	2-Channel (Stereo) with Stereo Headphones	Depop Differential Inputs I2C Shutdown Thermal Protection Volume Control	20-UFBGA DSBGA	Class AB	85 °C	-40 °C	2.7 V	5.5 V	1.25 W 38 mW	20-DSBGA
Texas Instruments LM49200TL/NOPB	Surface Mount	2-Channel (Stereo) with Stereo Headphones	Depop Differential Inputs I2C Shutdown Thermal Protection Volume Control	20-UFBGA DSBGA	Class AB	85 °C	-40 °C	2.7 V	5.5 V	1.25 W 38 mW	20-DSBGA

Catalog

500-mW, stereo, analog input Class-AB audio amplifier & I2C control

Key Features

• Differential Mono Input and Stereo Single-Ended Input32-Step Digital Volume Control (-80 to +18dB)Three Independent Volume Channels (Left, Right, Mono)Separate Headphone Volume ControlFlexible Output for Speaker and Headphone OutputTrue Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and CostReceiver Pass-Through CapabilitySoft Enable FunctionRF Immunity Topology"Click and Pop" Suppression CircuitryThermal Shutdown ProtectionMicro-Power ShutdownI2C Control InterfaceAvailable in Space-Saving DSBGA PackageKey SpecificationsSupply Voltage (VDD): 2.7V ≤ VDD ≤ 5.5VI2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5VOutput power at VDD = 5V, 1% THD+NRL = 8Ω speaker: 1.25W (typ)RL = 32Ω headphone: 38mW (typ)Output power at VDD = 3.3V, 1% THD+NRL = 8Ω speaker: 520W (typ)RL = 32Ω headphone: 38mW (typ)PSRR:VDD = 3.3V, 217Hz ripple, Mono In: 95dB (typ)Shutdown power supply current 0.02μA (typ)All trademarks are the property of their respective owners.Differential Mono Input and Stereo Single-Ended Input32-Step Digital Volume Control (-80 to +18dB)Three Independent Volume Channels (Left, Right, Mono)Separate Headphone Volume ControlFlexible Output for Speaker and Headphone OutputTrue Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and CostReceiver Pass-Through CapabilitySoft Enable FunctionRF Immunity Topology"Click and Pop" Suppression CircuitryThermal Shutdown ProtectionMicro-Power ShutdownI2C Control InterfaceAvailable in Space-Saving DSBGA PackageKey SpecificationsSupply Voltage (VDD): 2.7V ≤ VDD ≤ 5.5VI2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5VOutput power at VDD = 5V, 1% THD+NRL = 8Ω speaker: 1.25W (typ)RL = 32Ω headphone: 38mW (typ)Output power at VDD = 3.3V, 1% THD+NRL = 8Ω speaker: 520W (typ)RL = 32Ω headphone: 38mW (typ)PSRR:VDD = 3.3V, 217Hz ripple, Mono In: 95dB (typ)Shutdown power supply current 0.02μA (typ)All trademarks are the property of their respective owners.

Description

The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply. The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω. The LM49200 has three input channels. A pair of single-ended inputs and a fully differential input channel. The LM49200 features a 32-step digital volume control on the input stage and an 8-step digital volume control on the headphone output stage. The digital volume control and output modes are programmed through a two-wire I2C compatible interface that allows flexibility in routing and mixing audio channels. The LM49200 is designed for cellular phone, PDA, and other portable handheld applications. The high level of integration minimizes external components. The True Ground headphone amplifier eliminates the physically large DC blocking output capacitors reducing required board space and reducing cost. The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply. The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω. The LM49200 has three input channels. A pair of single-ended inputs and a fully differential input channel. The LM49200 features a 32-step digital volume control on the input stage and an 8-step digital volume control on the headphone output stage. The digital volume control and output modes are programmed through a two-wire I2C compatible interface that allows flexibility in routing and mixing audio channels. The LM49200 is designed for cellular phone, PDA, and other portable handheld applications. The high level of integration minimizes external components. The True Ground headphone amplifier eliminates the physically large DC blocking output capacitors reducing required board space and reducing cost.