TD9772A

Techcode® 4 Inputs Selectable Stereo Class-AB Audio Amplifier DATASHEET TD9772A General Description Features TD9772A is an audio amplifier of Class-AB type. It offers both excellent sound quality of THD+N<0.03% , and input/output flexibilities. TD9772A features three different output configurations and four different input channels, both selectable by external pins. Outputs can be BTL,SE, or straight-through. There are four input channels making it convenient for the multigadgets modern age. On-chip DC volume control features 64 non-linear digital steps from –84dB to 24dB for better responsive to human ears While output power can be as high as 2.6W, the maximum output voltage can be adjusted by an external bias so that output power can be limited. Output pin short protection and over temperature shutdown modes are to ensure good system integrity. Internal soft switching designs are to minimize click and pop noises during power up/down, mute, and channel switching instances. ◆ Vin: 2.5V to 5.5V ◆ Max Output Power (4-ohm speaker): 2.6W - With 64 Steps Volume Control - Adjustable max Output Power Limits ◆ 4 selectable Inputs ◆ Supports 3 Output configurations: BTL, SE, and Straight through. - Maximum BTL gain: 24dB - Maximum SE gain: 18dB ◆ Quiescent Current: <10mA ◆ Under Voltage Lockout at Vin <2V ◆ Short Circuit Protection ◆ Over Temperature Protection ◆ No Click and Pop noise: <10mW for BTL Applications Ordering Information Portable Music Center Notebook PC LCD ...