Part Number: CD74HCT7046A Other Parts Discussed in Thread: CD74HCT4046A , Hi E2E,
What is the difference between CD74HCT7046A and CD74HCT4046A? Which is the most suitable device to lock a 1 kHz square wave? Is there a PLL integrated circuit with a sinusoidal…
Part Number: CD74HCT7046A Other Parts Discussed in Thread: CD74HC7046A Date Sheet of CD74HC7046A/CD74HCT7046A mentions minimum center frequency of 12MHz. It also mentions "For a frequency range of 100kHz to 10MHz, the lock detector capacitor should be…
Part Number: CD74HCT7046A We are now using HCT7046 for FM demodulator design, the sch is same as datasheet FIGURE 1. LOGIC DIAGRAM as below, R3=3.3k, C2=470pF. signal frequency(intermediate frequency) applied on pin14 is 10.7MHz, 280kHz bandwidth, power…
Part Number: CD74HCT7046A Hi Team,
Our customer is using CD74HCT7046A for an FM demodulation circuit. While the output demodulation noise is too high: around 50~60mVpp.
Is there any method to decrease the noise amplitude?
Or any method to move…
Daniel,
I am not familar with this device and I have only worked with charge pump PLLs and anybody who has is free to chime in.
That being said, I think that your answer might be in Floyd Gardners traditional book on PLLs. It says the lock in range…
Other Parts Discussed in Thread: CD74HCT7046A I need to know how to design the low pass filter whose output is then pass on to the VCO input of the CD74HCT7046A PLL chip. By determining the values for the resistor R3 and R4 & capacitor C2. i can also…
Hi Mickey,
It would appear that the NE568A is an analog PLL. All of the PLL's in the Standard Logic portfolio are digital PLL -- ie they work on and generate square waves. We don't have a direct replacement.
I guess it's possible to replace an analog…
I know the connection you have listed are correct. I think you need to also tie the C1A and C1B to gnd.
I have attached an appnote on the HC4046 that may help you.
Hi Dhruv,
thanks for your interest in our device. Let me please ask one question: could you please descrive the input signal that you will provide to the CD74HC4046A?
I attached an useful App. Report which contains some applications case of this…
