Tools/Ground Bounce Calculator

Ground Bounce Calculator

Analyze SSO/SSN induced ground bounce

Input Parameters

IC Package

GND

L_lead = 5 nH/pin

Switching Outputs

Current/Output (mA)

Rise Time (ns)

Lead Inductance (nH)

Ground Pins

Vcc (V)

safe

400 mV

Ground bounce is within safe limits. No issues expected.

Bounce vs Vcc

12.1%

di/dt

160.0 MA/s

Effective Inductance

2.50 nH

Noise Margin (Low)

990 mV

Total Switch Current

160 mA

Recommended GND Pins

V_bounce = L_eff × (N × I_out) / t_r. Lower inductance or slower edges reduce bounce.

QFP/TQFP5-8 nH

BGA1-3 nH

QFN0.5-2 nH

Flip-Chip0.1-0.5 nH

We provide SI analysis and PCB layout review.