Texas Instruments provides a layout guide and PCB design checklist in the ADS8254 datasheet, which includes recommendations for component placement, routing, and thermal management. Additionally, the TI website offers a PCB layout example and a thermal design guide for the ADS8254.
The ADS8254 datasheet provides a detailed description of the AFE, including the input impedance, gain, and bandwidth. Engineers can use this information to optimize the AFE for their specific application by selecting the appropriate input range, gain, and filter settings. Additionally, TI offers an AFE design tool that can help engineers optimize the AFE for their specific application.
The recommended power-up sequence for the ADS8254IBRGCT is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD). This ensures that the analog circuitry is powered up before the digital circuitry, which helps to prevent digital noise from coupling into the analog circuitry.
The ADS8254IBRGCT has high-speed digital outputs that require careful handling to prevent signal degradation and electromagnetic interference (EMI). Engineers should use controlled-impedance transmission lines, such as 50-ohm microstrip or stripline, to route the digital outputs. Additionally, they should use termination resistors and/or series resistors to match the output impedance of the device to the transmission line impedance.
The ADS8254IBRGCT requires a clock signal to operate. The recommended clocking scheme is to use a single-ended clock signal with a frequency of 20-50 MHz. The clock signal should be routed close to the device and terminated with a 50-ohm resistor to prevent reflections and ensure signal integrity.
ADS8254IBRGCT datasheet
by Texas Instruments
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