A good PCB layout for PGA103U involves keeping the input and output traces short and symmetrical, using a solid ground plane, and placing the device close to the input and output connectors. TI provides a recommended PCB layout in the datasheet and application notes.
The gain setting depends on the input signal amplitude and the desired output signal amplitude. TI provides a gain setting table in the datasheet, and engineers can use this table to select the appropriate gain setting based on their specific application requirements.
The maximum input signal amplitude that PGA103U can handle is ±2.5V, but this can be limited by the supply voltage and the gain setting. Engineers should ensure that the input signal amplitude does not exceed the maximum rating to avoid distortion and damage to the device.
PGA103U has a built-in low-pass filter, but additional filtering may be required depending on the application. Engineers can use external filters, such as RC filters or active filters, to filter out noise and interference. TI provides guidance on filtering in the application notes.
The power consumption of PGA103U depends on the supply voltage, gain setting, and operating frequency. Engineers can minimize power consumption by using a low supply voltage, optimizing the gain setting, and using power-saving modes when possible. TI provides power consumption data in the datasheet.
PGA103U datasheet
by Texas Instruments
