OPA810

@@ -0,0 +1,52 @@+# OPA810++**Texas Instruments** · Operational amplifier · SOIC-8++High-speed op-amp with a FET input, so it combines a 140 MHz gain-bandwidth and fast slew rate with the femtoamp-class bias current of a CMOS part. That pairing suits it to transimpedance stages for photodiodes and to buffering high-impedance sensors at speed, where a bipolar high-speed amp would load the source. A rail-to-rail output and a wide 4.75 to 27 V supply give plenty of headroom. A fast, high-input-impedance workhorse for instrumentation.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NC | unconnected | No internal connection. Leave floating or tie to a quiet plane; do not connect to signal or supply nets. |+| 2 | VIN- | input | Inverting input pin of the op-amp. FET-input stage with typical 2pA input bias current; allowable differential input voltage ±7V. Common-mode input impedance ~12GΩ||2pF. |+| 3 | VIN+ | input | Noninverting input pin of the op-amp. Rail-to-rail FET input with 2pA typical bias current; input voltage range extends to V(S-)-0.2V and V(S+)+0.2V. |+| 4 | VS- | power_in | Negative power-supply pin. Total supply voltage V(S+)-V(S-) between 4.75V and 27V (max ±14V bipolar). Bypass with decoupling capacitors close to the pin. |+| 5 | NC | unconnected | No internal connection. Leave floating or tie to a quiet plane; do not connect to signal or supply nets. |+| 6 | VO | output | Amplifier output pin. Rail-to-rail output with 75mA typical high linear output current; short-circuit current ~100mA; drives up to 10pF capacitive load with <3dB peaking (Rs=0Ω). |+| 7 | VS+ | power_in | Positive power-supply pin. Total supply voltage V(S+)-V(S-) between 4.75V and 27V (max ±14V bipolar). Quiescent current 3.7mA/channel (typ). Bypass close to pin. |+| 8 | NC | unconnected | No internal connection. Leave floating or tie to a quiet plane; do not connect to signal or supply nets. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | High-speed FET-input op-amp |+| Gain-bandwidth | 140 MHz |+| Input bias current | 2 pA (typ) |+| Slew rate | 200 V/us |+| Supply | 4.75-27 V |+| Output | Rail-to-rail |+| Package | SOIC-8 |++## Ordering variants++- `OPA810IDBVR (SOT-23-5)`+- `OPA810ID (SOIC-8)`+- `OPA810IDR (SOIC-8, tape & reel)`++## CAD (KiCad official)++- Symbol: `Amplifier_Operational:OPA810xD (KiCad official)`+- 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/opa810.pdf) (52 pp, sha256 `74c61ac238989c94`, 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/opa810-datasheet.pdf)

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