ForumCategory: LayoutWhy Buffers Are Used In Clock Tree?
AvatarCircuitDesigner asked 3 weeks ago
Buffers are used in the clock tree to balance the clock skew by ensuring that the clock signal reaches all clocked elements at roughly the same time. This helps in maintaining proper timing across the design
1 Answers
Avatarsemiconductor answered 3 weeks ago

Buffers are used in the clock tree to:

Reduce Clock Skew: Buffers help in balancing delays and ensuring the clock signal reaches all parts of the circuit at the same time.

Strengthen the Clock Signal: They amplify and restore the signal integrity, ensuring it reaches distant parts of the chip without degradation.

Control Load Capacitance: Buffers help manage the capacitance seen by the clock source, preventing delays and ensuring timing accuracy.

In short, buffers ensure reliable, synchronized, and strong clock distribution across the chip.