OPA2227UA

@@ -0,0 +1,51 @@+# OPA2227UA++**Texas Instruments** · Precision OpAmps · SOIC-8++OPA2227UA from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | Out A | output | Amplifier A output. Class-AB output stage; +/-45mA typical short-circuit current, drives loads down to 600 ohm with V- +3.5V to V+ -3.5V swing. |+| 2 | -In A | input | Inverting input of amplifier A. Bipolar input with +/-2.5nA typical (10nA max) bias current, +/-2.5nA typical offset current. Common-mode range V- +2V to V+ -2V. |+| 3 | +In A | input | Non-inverting input of amplifier A. Same DC/AC specs as -In A; differential input impedance 10^7 ohm || 12 pF. |+| 4 | V- | power_in | Negative supply rail. Operating range -2.5V to -18V referenced to V+ (total Vs = 5V to 36V). Quiescent current 3.7mA typ per amplifier. |+| 5 | +In B | input | Non-inverting input of amplifier B. Bipolar input, +/-2.5nA typ bias, common-mode range V- +2V to V+ -2V. |+| 6 | -In B | input | Inverting input of amplifier B. Same specs as +In B; 10^9 ohm || 3 pF common-mode input impedance. |+| 7 | Out B | output | Amplifier B output. Class-AB output stage matched to Out A; channel separation 110 dB at 1kHz, 5k ohm load. |+| 8 | V+ | power_in | Positive supply rail. Operating range +2.5V to +18V referenced to V-. Absolute maximum supply voltage +/-18V; bypass with 0.1uF ceramic to V-. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `OPA2227UAU`+- `OPA2227UA`+- `OPA2227UAP`++## CAD (KiCad official)++- Symbol: `OPA2227UA`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/opa2227ua.pdf) (27 pp, sha256 `9c1e133dfda319a3`, 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/opa2227ua-datasheet.pdf)

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