Datasheet Texas Instruments LM49200 — 数据表

LM49200, LM49200TLEVAL
www.ti.com LM49200 SNAS459A – MAY 2009 – REVISED APRIL 2013 Stereo Class AB Audio Subsystem with a True
Ground Headphone Amplifier
Check for Samples: LM49200, LM49200TLEVAL FEATURES APPLICATIONS 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 …