Texas Instruments provides a recommended PCB layout in the datasheet (Section 10.1) and in the ADS5281 Evaluation Module User's Guide (SLAU271). It's essential to follow these guidelines to minimize noise, ensure proper signal routing, and optimize performance.
The internal VREF can be configured using the VREF pin. Connect a 0.1 μF capacitor between VREF and GND, and ensure the VREF pin is not loaded with more than 10 kΩ impedance. For more information, refer to the datasheet (Section 7.3.1) and the ADS5281 datasheet errata (literature number: SBAU011).
The ADS5281IRGCTG4 supports clock frequencies up to 100 MHz. However, the maximum clock frequency may vary depending on the specific application and system requirements. It's essential to consult the datasheet (Section 7.3.2) and perform thorough testing to ensure the desired clock frequency is supported.
The ADS5281IRGCTG4 outputs 14-bit digital data in a binary two's complement format. The data is output on the D[13:0] pins and is valid on the rising edge of the clock (CLK) signal. Ensure proper synchronization and data capture by using a suitable digital interface, such as an FPGA or a microcontroller, and following the datasheet (Section 7.4) guidelines.
The power consumption of the ADS5281IRGCTG4 varies depending on the operating mode, clock frequency, and supply voltage. The typical power consumption is around 125 mW at 3.3 V and 100 MHz clock frequency. To optimize power consumption, consider using the power-down mode, reducing the clock frequency, and optimizing the analog input signal range. Refer to the datasheet (Section 7.5) for more information.
ADS5281IRGCTG4 datasheet
by Texas Instruments
