TD9772A中文资料4 Inputs Selectable Stereo Class-AB Audio Amplifier数据手册Techcode规格书

描述 Description

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 configu- rations and four different input channels, both selectable by external pins. Outputs can be of BTL, SE, or straight-through. There are four input channels  making  it  convenient  for  the  multi- gadgets modern age. On-chip DC volume control features 64 non-linear digital steps from –45dB 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 lim- ited. Output pin short protection and over tem- perature shutdown modes are to ensure good sys- tem integrity. Internal soft switching designs are to minimize click and pop noises during power up/down, mute, and channel switching instances.

特性 Features

• 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: <7mA
•  Under Voltage Lockout at Vin <2.1V
•  Short Circuit Protection
•  Over Temperature Protection
•   No Click and Pop noise: <10mW for BTL

应用 Application

Portable Music Center