ADS42JB46IRGC25 datasheet by Texas Instruments

ADS42JB46IRGC25 Frequently Asked Questions (FAQs)

• What is the optimal clock frequency for the ADS42JB46IRGC25?
  The optimal clock frequency for the ADS42JB46IRGC25 is between 10 MHz to 40 MHz. However, it's recommended to use a clock frequency of 20 MHz to 30 MHz for optimal performance and to minimize jitter.
• How do I properly terminate the differential analog input pins?
  To properly terminate the differential analog input pins, use a 100-ohm differential termination resistor (Rterm) between the VIN+ and VIN- pins. This helps to reduce reflections and improve signal integrity.
• What is the recommended power-up sequence for the ADS42JB46IRGC25?
  The recommended power-up sequence is to first apply the analog power supply (AVDD) and then the digital power supply (DVDD). This ensures that the analog circuitry is powered up before the digital circuitry.
• How do I handle the output data format and alignment?
  The ADS42JB46IRGC25 outputs data in a 14-bit, two's complement format. The output data is aligned to the falling edge of the clock signal (SCLK). Make sure to adjust your FPGA or microcontroller to accommodate this format and alignment.
• What is the maximum input voltage range for the ADS42JB46IRGC25?
  The maximum input voltage range for the ADS42JB46IRGC25 is ±VREF (±2.5 V typical). Exceeding this range may result in incorrect conversions or damage to the device.