Slew Rate Calculator
Required slew rate for a sine at any frequency and amplitude — or full-power bandwidth and max clean swing from your op-amp's SR.
Slew limiting is a LARGE-signal effect: the small-signal GBW may promise 3 MHz while a 10 Vpp sine triangles-out at 100 kHz. Symptoms: sine→triangle, sudden THD explosion above a threshold amplitude. Audio rule of thumb: SR ≥ 0.5 V/µs per volt-peak gives 5× margin at 20 kHz — the venerable TL072 covers any line-level need.
Slew Rate Calculator computes the slew rate a signal demands — or the bandwidth/amplitude ceiling of a given op-amp — free, instant and private in your browser. Audio and signal-chain designers separating large-signal limits from small-signal bandwidth use it to skip the datasheet algebra: type your numbers, read the answer with the substituted formula shown step by step, and share an exact permalink of the calculation.
About Slew Rate Calculator
Slew Rate Calculator computes the slew rate a signal demands — or the bandwidth/amplitude ceiling of a given op-amp using the standard engineering relation: SR = 2π·f·V(peak); full-power bandwidth = SR/(2π·V(peak)). Worked live: a 100 kHz sine at 5 V peak needs 3.1 V/µs — a 13 V/µs TL072 covers it 4× over. The result recalculates on every keystroke, the worked-example panel shows your numbers substituted into the formula, and the Copy permalink button encodes the inputs in the URL so a colleague opens exactly your calculation. Everything runs client-side — nothing you type leaves your device.
How to use Slew Rate Calculator
- 1Enter your values — the tool starts with realistic defaults for this exact use case, so the worked example is meaningful immediately.
- 2Read the live result and the worked-example panel, which substitutes your numbers into the formula step by step.
- 3Adjust any input to compare scenarios, then use Copy result or Copy permalink to share the calculation.
Why use Slew Rate Calculator?
- ✓Implements the real formula — SR = 2π·f·V(peak) — with the substitution shown, not a black box
- ✓Built for audio and signal-chain designers separating large-signal limits from small-signal bandwidth
- ✓Copy result and permalink buttons — share the exact calculation in a README, forum answer or design review
- ✓100% free, no sign-up, runs entirely in your browser (works offline once loaded)
Frequently asked questions
How do you calculate slew rate?+
The slew rate a signal demands — or the bandwidth/amplitude ceiling of a given op-amp follows SR = 2π·f·V(peak); full-power bandwidth = SR/(2π·V(peak)). For example, a 100 kHz sine at 5 V peak needs 3.1 V/µs — a 13 V/µs TL072 covers it 4× over. The calculator applies the same relation and shows the substituted arithmetic so you can verify every step.
My op-amp has megahertz of bandwidth — why does a big signal distort?+
GBW is a SMALL-signal spec. Large outputs hit the slew limit first: the output turns into ramps, sines become triangles and THD explodes past a sharp amplitude threshold. Check SR = 2πf·Vp against the datasheet before trusting GBW.
How much slew rate does audio really need?+
0.5 V/µs per volt of peak output covers 20 kHz with 4× margin — a ±10 V line stage is happy with 5–10 V/µs. The vintage 741 (0.5 V/µs total) genuinely couldn't do full-power treble; any modern FET op-amp can. More SR than needed buys nothing audible.
Is the Slew Rate Calculator free and private?+
Yes — completely free with no sign-up or usage limits, and it runs entirely in your browser: the values you enter are never uploaded or stored on a server.
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