CD4047BNSR datasheet by Texas Instruments

CD4047BNSR Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the CD4047BNSR?
  The recommended operating voltage range for the CD4047BNSR is 3V to 15V, although it can operate down to 2V with reduced performance.
• How do I choose the correct resistor and capacitor values for the oscillator circuit?
  The choice of resistor and capacitor values depends on the desired frequency and oscillator type. A good starting point is to use the values recommended in the datasheet, and then adjust them based on the specific application requirements.
• What is the maximum frequency that the CD4047BNSR can operate at?
  The maximum frequency that the CD4047BNSR can operate at is approximately 1 MHz, although this can vary depending on the specific application and operating conditions.
• Can the CD4047BNSR be used as a voltage-controlled oscillator (VCO)?
  Yes, the CD4047BNSR can be used as a VCO by applying a control voltage to the Vc pin. The frequency of the oscillator will vary in response to changes in the control voltage.
• How do I ensure that the CD4047BNSR oscillator circuit starts up reliably?
  To ensure reliable startup, it's recommended to use a high-value resistor (e.g. 1MΩ) between the VDD pin and the oscillator circuit, and to add a capacitor (e.g. 10nF) between the oscillator output and ground to filter out noise.