Clock Jitter

The Music Telegraph | Text 2019/03/21 [14:30]

Clock Jitter

The Music Telegraph| 입력 : 2019/03/21 [14:30]

▲ Clock Jitter

© north star design



 

Clock Jitter

 

1. Jitter is time based error - caused by time delays in the circuit paths

 

2. Jitter: Inaccuracies in timing between digital transfers

 

3. Audio going more than 1 direction, or more than 1 channel

 

4. Solution

- Use a separated sync source

- Use a dedicated sync, such as Word Clock or ADAT Sync

 

5. Clicks, pops, loss of DR (Dynamic Range) and sound stage -> Caused by poorly timed clock sync - Only affecting monitoring

 

6. Causes

i) Poorly designed Phase Locked Loops (PLL)

ii) Waveform distortion due to mismatched impedances and reflections in the signal path  

 

 

▲ Jitter error may happen in DA (Digital-to-Analog converter) system clock

©The Music Telegraph

 

 

 

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