ADA4522-1 Zero-Drift Op-Amp

@@ -0,0 +1,55 @@+# ADA4522++**Analog Devices** · Operational Amplifier · SOIC-8++The ADA4522-1 is a single zero-drift operational amplifier that pairs low input offset (5 uV max) and near-zero drift with a wide supply range up to 55 V and low broadband noise. Its combination of precision and high-voltage operation suits demanding bridge, current-sense, and instrumentation front ends that run from higher rails.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NIC | unconnected | Not internally connected. Leave floating or optionally tie to a stable potential; no internal die connection. |+| 2 | -IN | input | Inverting input of the op amp. Ground-sensing input; input voltage range extends from V- (ground on single supply) to (V+) - 1.5 V. |+| 3 | +IN | input | Noninverting input of the op amp. Ground-sensing input; input voltage range extends from V- (ground on single supply) to (V+) - 1.5 V. |+| 4 | V- | power_in | Negative supply voltage. Single-supply operation: connect to GND (V+ = 4.5 V to 55 V). Dual-supply operation: -2.25 V to -27.5 V referenced to ground. |+| 5 | NIC | unconnected | Not internally connected. Leave floating or optionally tie to a stable potential; no internal die connection. |+| 6 | OUT | output | Op amp output. Rail-to-rail output; drives 10 kΩ loads to within millivolts of either supply rail. |+| 7 | V+ | power_in | Positive supply voltage. Total supply range 4.5 V to 55 V (single) or ±2.25 V to ±27.5 V (dual). Bypass with a local 0.1 µF ceramic to V-/GND close to the pin. |+| 8 | NIC | unconnected | Not internally connected. Leave floating or optionally tie to a stable potential; no internal die connection. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Single zero-drift op-amp |+| Input offset voltage | 5 uV max |+| Offset drift | 0.022 uV/C typ |+| Gain-bandwidth product | 2.7 MHz typ |+| Input noise | 5.8 nV/sqrt(Hz) |+| Supply voltage | 4.5 V to 55 V |+| Operating temperature | -40 C to 125 C |++## Ordering variants++- `ADA4522ARMZ`+- `ADA4522ARZ`+- `ADA4522ARZ-2`+- `ADA4522ARMZ-2`+- `ADA4522ARZ-4`+- `ADA4522ARUZ-4`++## CAD (KiCad official)++- Symbol: `ada4522.kicad_sym`+- Footprint: `ada4522.kicad_mod`+- 3D model: SOIC-8 body from KiCad `Package_SO/SOIC-8_3.9x4.9mm_P1.27mm`.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Analog Devices datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/ADA4522-1_4522-2_4522-4.pdf) (48 pp, sha256 `a97ba626399a0e7d`, 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/ada4522-datasheet.pdf)

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