Texas Instruments LM49101
The LM49101 is a fully integrated audio subsystem with a mono power amplifier capable of delivering 540mW of continuous average power into an 8Ω BTL speaker load with 1% THD+N using a 3.3V supply. The LM49101 includes a separate stereo headphone amplifier that can deliver 44mW per channel into 32Ω loads using a 2.75V supply. The LM49101 has four input channels.| Part No. | LM49101 |
|---|---|
| Datasheet | LM49101 Download |
| Manufacturer |  Texas Instruments |
| Description | Mono Class AB Audio Subsystem |
| Buy | Stock & Price |
FEATURES
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
● I2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5V
● Output Power, VDDLS = 5V, VDDHP = 2.75V, 1% THD+N – RL = 8Ω Speaker 1.3W (Typ) – RL = 32Ω Headphone 45mW (Typ)
● Output Power VDDLS = 3.3V, VDDHP = 2.75V, 1% THD+N – RL = 8Ω Speaker...
