quartz calculator | quarzwerk

Quartz Calculator | quarzwerk

Nominal Frequency

10.000000 MHz

Δf = 0.000 ppm ✓

Load by Internal Reference

💎 Crystal Parameters

Nominal Frequency

MHz

Overtone

Load Capacitance CL

ESR (R1)

⚡ Motional Data

C1 (Motional)

C0 (Shunt)

Stray Capacitance

Manual input (layout dependent)

Supply Voltage

Manual input (IC dependent)

Optimized Circuit Design

18.0
C_ext1
pF

18.0
C_ext2
pF

220

🎚️ Fine-tune C_ext Move sliders → Graph updates live

C_ext1 18.0 pF

5 pF 100 pF

C_ext2 18.0 pF

5 pF 100 pF

Effective CL: 12.0 pF

Δf: 0.000 ppm

Ratio: 1:1.0

⚡ Alternative Values (asymmetric) Better for startup behavior!

Asymmetric capacitors improve startup behavior. All combinations result in the same effective load capacitance CL.

1:1 (symmetric)

18 | 18 pF

1:1.5

22 | 15 pF

1:2

27 | 13 pF

Startup Safety Margin 420%