Texas Instruments provides a layout guide in the datasheet, but it's also recommended to follow general high-speed PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using differential pairs for clock and data lines.
The clock input should be driven by a low-jitter clock source, and it's recommended to use a clock buffer or a dedicated clock generator to ensure a clean and stable clock signal. Additionally, the clock input should be terminated with a 50-ohm resistor to match the impedance of the clock line.
The recommended power-up sequence is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD), and then the clock input. This ensures that the analog circuitry is powered up before the digital circuitry, which helps to prevent latch-up and ensures proper device operation.
To optimize performance in a noisy environment, it's recommended to use proper shielding and grounding techniques, such as using a metal shield around the ADC and connecting it to the analog ground plane. Additionally, using a low-pass filter or a ferrite bead on the analog input lines can help to reduce noise and improve performance.
The maximum sampling rate of the ADS7957SRHBR is 250 kSPS, but this can be affected by factors such as the clock frequency, the analog input frequency, and the system noise. It's recommended to consult the datasheet and perform characterization tests to determine the maximum achievable sampling rate for a specific application.
Trust Checks
This model has been verified by system checks.
System Verified
Sponsored
ADS7957SRHBR Overview
Use the download button to access the ADS7957SRHBR schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like ADS79,
or try a keyword search, such as Analog to Digital Converters
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
