Datasheet Texas Instruments LM49101 — 数据表

LM49101, LM49101TMEVAL
www.ti.com LM49101 SNAS475A – MARCH 2009 – REVISED APRIL 2013 Mono Class AB Audio Subsystem with a True
Ground Headphone Amplifier and Earpiece Switch
Check for Samples: LM49101, LM49101TMEVAL FEATURES APPLICATIONS 1 2 Differential Mono Input and Stereo SingleEnded Input
Separate Earpiece (Receiver) Differential Input
Analog Switch for a Separate Earpiece Path
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
Hardware Reset 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 (VDDLS): 2.7V ≤ VDDLS ≤ 5.5V
Supply Voltage (VDDHP): 1.8V ≤ VDDHP ≤ 2.9V …