CD4046BPWR datasheet by Texas Instruments

CD4046BPWR Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the CD4046BPWR?
  The recommended power-on sequence is to apply VCC before applying any input signals to ensure proper operation.
• How do I choose the correct values for the loop filter components (R1, R2, C1, C2) in the CD4046BPWR?
  The values of R1, R2, C1, and C2 depend on the desired loop bandwidth, phase margin, and stability. TI provides a PLL loop filter design tool to help with component selection.
• What is the maximum frequency range of the CD4046BPWR?
  The CD4046BPWR 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 CD4046BPWR is in a stable locked state?
  Monitor the lock detect output (LD) pin, which goes high when the PLL is in a stable locked state. You can also monitor the phase detector output (PDO) pin to ensure it's within the desired range.
• What is the purpose of the VCO input (VIN) pin on the CD4046BPWR?
  The VIN pin is used to tune the voltage-controlled oscillator (VCO) frequency. An external voltage source can be applied to this pin to adjust the VCO frequency.