ZHCSAA4B September 2012 – September 2015 TPA3110D2-Q1
PRODUCTION DATA.
The TPA3110D1-Q1 device is an automotive class-D audio amplifier. It accepts either a stereo single ended or differential analog input, amplifies the signal, and drives up to 15W across two bridge tied loads, usually stereo speakers. Because an analog input is needed, this device is often paired with a codec or audio DAC if the audio source is digital.
The four digital input/output pins, GAIN0, GAIN1, SD, and FAULT, can be pulled up to PVCC. When connecting these terminals to PVCC, a 100 kΩ-resistor must be put in series to limit the slew rate. One of four gain settings is used depending on the configuration of GAIN0 and GAIN1. The SD pin is used to put the device in shutdown or normal mode. The FAULT pin is used to indicate if a DC detect or short circuit fault was detected. The next few sections explains design considerations and how to choose the external components.