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LM49200TLEVAL

Texas Instruments
Part Number LM49200TLEVAL
Manufacturer Texas Instruments
Description Stereo Class AB Audio Subsystem
Published May 19, 2023
Detailed Description LM49200, LM49200TLEVAL www.ti.com SNAS459A – MAY 2009 – REVISED APRIL 2013 LM49200 Stereo Class AB Audio Subsystem w...
Datasheet PDF File LM49200TLEVAL PDF File

LM49200TLEVAL
LM49200TLEVAL

Overview
LM49200, LM49200TLEVAL www.
ti.
com SNAS459A – MAY 2009 – REVISED APRIL 2013 LM49200 Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier Check for Samples: LM49200, LM49200TLEVAL FEATURES 1 •2 Differential Mono Input and Stereo SingleEnded Input • 32-Step Digital Volume Control (-80 to +18dB) • Three Independent Volume Channels (Left, Right, Mono) • Separate Headphone Volume Control • Flexible Output for Speaker and Headphone Output • True Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and Cost • Receiver Pass-Through Capability • Soft Enable Function • RF Immunity Topology • “Click and Pop” Suppression Circuitry • Thermal Shutdown Protection • Micro-Power Shutdown • I2C Control Interface • Available in Space-Saving DSBGA Package KEY SPECIFICATIONS • Supply Voltage (VDD): 2.
7V ≤ VDD ≤ 5.
5V • I2C Supply Voltage: 1.
7V ≤ I2CVDD ≤ 5.
5V • Output power at VDD = 5V, 1% THD+N – RL = 8Ω speaker: 1.
25W (typ) – RL = 32Ω headphone: 38mW (typ) • Output power at VDD = 3.
3V, 1% THD+N – RL = 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) APPLICATIONS • Portable Electronic Devices • Mobile Phones • PDAs 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 ...


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