# AD780ARZ-REEL7

**Analog Devices** · Voltage Reference · SOIC-8

AD780ARZ-REEL7 from Analog Devices, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No internal connection; the datasheet marks this pin NC (no connect). |
| 2 | +VIN | power_in | Positive supply input, specified from 4.0 V to 36 V, with a 36 V absolute maximum to ground. |
| 3 | TEMP | output | Temperature output of about 560 mV at 25°C with a sensitivity of about 2 mV/°C, which must be buffered because drawing current from it shifts VOUT. |
| 4 | GND | power_in | Ground reference for the device; it is grounded in the specified series-mode operation with the output taken at pin 6. |
| 5 | TRIM | passive | Trim node for initial error nulling, with a 36 V absolute maximum to ground; a 25 kΩ potentiometer between VOUT, TRIM and GND gives a coarse 4% adjustment range. |
| 6 | VOUT | output | Reference output at 2.5 V or 3.0 V that can source or sink up to 10 mA and is safe for indefinite short to ground and momentary short to VIN. |
| 7 | NC | unconnected | Internally tied through a 20 kΩ resistor to +VIN and used only for production test, so it should be left unconnected and not used as the LT1019 self-heater pin without accounting for the added load. |
| 8 | O/P SELECT | input | Output voltage select: leave unconnected for a 2.5 V output or connect to GND for a 3.0 V output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 2.5 V output voltage |  | 2.495 |  | 2.505 | V |  | 3 |
| 3.0 V output voltage |  | 2.995 |  | 3.005 | V |  | 3 |
| Output voltage drift |  |  |  | 7 | ppm/°C | −40°C to +85°C | 3 |
| Output voltage drift |  |  |  | 20 | ppm/°C | −55°C to +125°C | 3 |
| Line regulation, 2.5 V output |  |  |  | 10 | µV/V | 4 V ≤ +VIN ≤ 36 V, TMIN to TMAX | 3 |
| Line regulation, 3.0 V output |  |  |  | 10 | µV/V | 4.5 V ≤ +VIN ≤ 36 V, TMIN to TMAX | 3 |
| Load regulation, series mode, sourcing |  |  |  | 50 | µV/mA | 0 mA < IOUT < 10 mA | 3 |
| Load regulation, series mode, sourcing |  |  |  | 75 | µV/mA | TMIN to TMAX | 3 |
| Load regulation, series mode, sinking |  |  |  | 75 | µV/mA | −10 mA < IOUT < 0 mA | 3 |
| Load regulation, series mode |  |  |  | 75 | µV/mA | −40°C to +85°C | 3 |
| Load regulation, series mode |  |  |  | 150 | µV/mA | −55°C to +125°C | 3 |
| Load regulation, shunt mode |  |  |  | 75 | µV/mA | I < ISHUNT < 10 mA | 3 |
| Quiescent current, 2.5 V series mode |  |  | 0.75 | 1 | mA | −40°C to +85°C | 3 |
| Quiescent current, 2.5 V series mode |  |  | 0.8 | 1.3 | mA | −55°C to +125°C | 3 |
| Minimum shunt current |  |  | 0.7 | 1 | mA |  | 3 |
| Trim range |  | -4 |  | 4 | % |  | 3 |
| Long-term stability |  | -20 |  | 20 | ppm/1000 Hr |  | 3 |
| Temperature pin voltage output |  | 500 | 560 | 620 | mV | 25°C | 3 |
| Specified performance temperature range |  | -40 |  | 85 | °C | Specified Performance (A, B, C) | 3 |
| Operating performance temperature range |  | -55 |  | 125 | °C | Operating Performance (A, B, C) | 3 |
| Input voltage | +VIN | 4 |  | 36 | V |  | 1 |
| +VIN to ground | +VIN |  |  | 36 | V |  | 4 |
| TRIM pin to ground |  |  |  | 36 | V |  | 4 |
| TEMP pin to ground |  |  |  | 36 | V |  | 4 |
| Power dissipation |  |  |  | 500 | mW | 25°C | 4 |
| Storage temperature |  | -65 |  | 150 | °C |  | 4 |
| Lead temperature (soldering) |  |  |  | 300 | °C | 10 sec | 4 |
| Output voltage noise, 0.1 Hz to 10 Hz |  |  | 4 |  | µV p-p | 0.1 Hz to 10 Hz | 3 |
| Output noise spectral density |  |  | 100 |  | nV/√Hz | 100 Hz | 3 |
| Temperature sensitivity |  |  | 1.9 |  | mV/°C |  | 3 |
| Temperature pin output resistance |  |  | 3 |  | kΩ |  | 3 |
| Short-circuit current to ground |  |  | 30 |  | mA |  | 3 |

## CAD (KiCad official)

- Symbol: `AD780ARZ-REEL7`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ad780arz-reel7-etched.step` / `ad780arz-reel7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad780arz-reel7.step` / `ad780arz-reel7.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879851193847808) (12 pp, sha256 `0964980b284730c1`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ad780arz-reel7-datasheet.pdf)