OPA333

@@ -0,0 +1,49 @@+# OPA333++**Texas Instruments** · Zero-drift precision op-amp · SOT-23-5++A single zero-drift (chopper-stabilized) precision operational amplifier in SOT-23-5, for measuring very small DC signals accurately. Its input offset voltage is just 10 uV maximum and drifts only 0.05 uV per degree C, with essentially no 1/f (flicker) noise, so it recovers microvolt-level signals from bridge sensors, thermocouples, shunt-current measurements, and electrochemical cells where a general-purpose op-amp's offset would swamp the signal. The output is rail-to-rail and it runs from a single 1.8 to 5.5 V supply, making it easy to drop into low-voltage precision front ends. Pinout is OUT, V-, +IN, -IN, V+.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | OUT | output | Op-amp output. Rail-to-rail output that swings within 50 mV of the supply rails. Short-circuit protected to ground (one amplifier per package). |+| 2 | V- | power_in | Negative (lowest) power supply. Connect to GND for single-supply operation or to the negative rail for dual-supply operation. Total supply (V+ minus V-) must be between 1.8 V and 5.5 V. |+| 3 | +IN | input | Noninverting input. Common-mode range extends 100 mV beyond both supply rails. Diode-clamped to the supply rails; limit input current to 10 mA when signals exceed rails by more than 0.3 V. |+| 4 | -IN | input | Inverting input. Common-mode range extends 100 mV beyond both supply rails. Diode-clamped to the supply rails; limit input current to 10 mA when signals exceed rails by more than 0.3 V. |+| 5 | V+ | power_in | Positive (highest) power supply. Operating supply range 1.8 V to 5.5 V referenced to V-. Bypass with a 0.1 µF ceramic capacitor to V-/GND close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Zero-drift precision op-amp |+| Offset voltage | 10 µV max |+| Offset drift | 0.05 µV/°C |+| Noise | 1.1 µVpp (0.1-10 Hz), no 1/f |+| Output | rail-to-rail |+| Gain-bandwidth | 350 kHz |+| Supply voltage | 1.8-5.5 V |+| Package | SOT-23-5 |++## Ordering variants++- `OPA333AIDBVR (SOT-23-5)`+- `OPA333AIDBVT (SOT-23-5, small reel)`++## CAD (KiCad official)++- Symbol: `Amplifier_Operational:OPA333xxDBV`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/opa333.pdf) (49 pp, sha256 `df60da7154848c57`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/opa333-datasheet.pdf)

@@ -0,0 +1,37 @@+{+  "slug": "opa333",+  "version": "0.1.0",+  "type": "component",+  "description": "TI zero-drift precision op-amp, SOT-23-5. 10 uV offset, 0.05 uV/C drift, rail-to-rail, 1.8-5.5 V. Datasheet-verified.",+  "tags": [+    "component",+    "amplifier",+    "op-amp",+    "zero-drift",+    "precision",+    "chopper",+    "sot-23-5",+    "texas-instruments"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "opa333.kicad_sym",+    "opa333.kicad_mod",+    "opa333.glb",+    "docs/hero.png",+    "docs/opa333-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file