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diff --git a/charts/power-supply-noise-coupling-typical-magnitude.typ b/charts/power-supply-noise-coupling-typical-magnitude.typ
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+++ b/charts/power-supply-noise-coupling-typical-magnitude.typ
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+#import "../lib/unify.typ": qty, unit
+#import "@preview/cetz:0.5.2"
+#import "@preview/cetz-plot:0.1.4": plot
+
+#figure(
+  cetz.canvas({
+    import cetz.draw: *
+
+    plot.plot(
+      size: (12, 6),
+      x-mode: "log",
+      y-mode: "linear",
+      x-label: [Frequency $f$ ($unit("Hz")$)],
+      y-label: [$upright("PSRR")(f)$ ($unit("dB")$)],
+      x-min: 1,
+      x-max: 1000000,
+      y-min: 0,
+      y-max: 140,
+      x-grid: "minor",
+      y-grid: "minor",
+      {
+        // 500 kHz PWAM Carrier vertical reference line
+        plot.add(
+          ((500000, 0), (500000, 140)),
+          style: (stroke: (paint: luma(120), thickness: 0.8pt, dash: "dashed")),
+          label: none,
+        )
+        // General purpose (TL07x): PSRR_DC = 100 dB, fp1 = 1 kHz, fp2 = 100 kHz
+        plot.add(
+          style: (stroke: (dash: "solid")),
+          label: [TL07x],
+          domain: (1, 1000000),
+          samples: 8000,
+          f => (
+            100
+              - 10 * calc.log(1 + calc.pow(f / 1000, 2), base: 10)
+              - 10 * calc.log(1 + calc.pow(f / 100000, 2), base: 10)
+          ),
+        )
+        // Low noise (OPA211): PSRR_DC = 130 dB, fp1 = 300 Hz, fp2 = 50 kHz
+        plot.add(
+          style: (stroke: (dash: "dotted")),
+          label: [OPA211],
+          domain: (1, 1000000),
+          samples: 8000,
+          f => (
+            130
+              - 10 * calc.log(1 + calc.pow(f / 300, 2), base: 10)
+              - 10 * calc.log(1 + calc.pow(f / 50000, 2), base: 10)
+          ),
+        )
+        // Precision low noise (LT1028): PSRR_DC = 120 dB, fp1 = 300 Hz, fp2 = 100 kHz
+        plot.add(
+          style: (stroke: (dash: "dashed")),
+          label: [LT1028],
+          domain: (1, 1000000),
+          samples: 8000,
+          f => (
+            120
+              - 10 * calc.log(1 + calc.pow(f / 300, 2), base: 10)
+              - 10 * calc.log(1 + calc.pow(f / 100000, 2), base: 10)
+          ),
+        )
+      },
+    )
+  }),
+  caption: [Power supply rejection ratio ($upright("PSRR")$) degradation across frequency, highlighting the reduced rejection at the $qty(500, "kHz")$ PWAM carrier frequency],
+) <figure-power-supply-noise-coupling-mathematical-model>