CD4046BF datasheet by Texas Instruments

CD4046BF Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the CD4046BF?
  The recommended power-on sequence is to apply VCC before applying any input signals to ensure proper operation and prevent latch-up.
• How do I choose the correct values for the loop filter components (R1, R2, C1, C2)?
  The loop filter component values depend on the desired PLL bandwidth, phase margin, and lock time. TI provides a PLL design tool to help with component selection.
• What is the maximum frequency range for the CD4046BF?
  The CD4046BF can operate up to 15 MHz, but the maximum frequency range depends on the specific application and the values of the loop filter components.
• How do I ensure the PLL is locked and stable?
  Monitor the lock detect output (LD) pin, which goes high when the PLL is locked. Also, ensure the loop filter is properly designed and the input signals are within the recommended frequency range.
• Can I use the CD4046BF as a frequency multiplier?
  Yes, the CD4046BF can be used as a frequency multiplier by configuring the PLL to multiply the input frequency by a desired factor.