# AD780ANZ

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

AD780ANZ from Analog Devices, in a PDIP-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 | DNC | unconnected | Do not connect; this pin must be left unconnected (DNC = do not connect to this pin). |
| 2 | +VIN | power_in | Supply input; the AD780 operates from 4.0 V to 36 V, with +VIN to ground rated at 36 V maximum. |
| 3 | TEMP | output | Temperature output that is about 560 mV at 25°C and rises about 2 mV/°C; it is rated 36 V maximum to ground and its current draw strongly affects VOUT, so it must be buffered by a suitable op amp. |
| 4 | GND | power_in | Ground reference pin for the device. |
| 5 | TRIM | passive | Output trim connection for a coarse trim (4% range) potentiometer between VOUT, TRIM and GND or fine trim through a large series resistor; TRIM to ground is rated 36 V maximum. |
| 6 | VOUT | output | Precision 2.5 V or 3.0 V reference output that can source or sink up to 10 mA and is safe for indefinite short to ground and momentary short to VIN. |
| 7 | DNC | unconnected | Do not connect; internally this pin is a 20 kΩ resistor to +VIN used only for production test, so it must not be tied to any external circuit. |
| 8 | 2.5V/3.0V O/P SELECT | input | Output voltage select: leave unconnected (DNC) for 2.5 V output or connect to GND for 3.0 V output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | PDIP-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 |
|---|---|---|---|---|---|---|---|
| Output voltage, 2.5 V output |  | 2.495 |  | 2.505 | V |  | 3 |
| Output voltage, 3.0 V output |  | 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 | 2.5 V Output, 4 V ≤ +VIN ≤ 36 V, TMIN to TMAX | 3 |
| Line regulation, 3.0 V output |  |  |  | 10 | μV/V | 3.0 V Output, 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, sinking |  |  |  | 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 |
| Long-term stability |  | -20 |  | 20 | ppm/1000 Hr |  | 3 |
| Trim range |  | -4 |  | 4 | % |  | 3 |
| Temperature pin voltage output |  | 500 | 560 | 620 | mV | @ 25°C | 3 |
| Specified performance temperature range |  | -40 |  | 85 | °C | Grade A (AD780AN) | 3 |
| Operating performance temperature range |  | -55 |  | 125 | °C | Grade A (AD780AN); device still functions, may deviate from specified performance | 3 |
| Output 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 (TEMP pin) |  |  | 1.9 |  | mV/°C |  | 3 |
| Output resistance (TEMP pin) |  |  | 3 |  | kΩ |  | 3 |
| Short-circuit current to ground |  |  | 30 |  | mA |  | 3 |
| Solder heat shift, mean |  |  | -1.1 |  | mV |  | 3 |
| Solder heat shift, sigma |  |  | 0.4 |  | mV |  | 3 |
| +VIN to ground |  |  |  | 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 |
| Input voltage (+VIN) |  | 4 |  | 36 | V |  | 1 |
| Thermal resistance, junction-to-ambient, N-8 PDIP | θJA |  | 49.8 |  | °C/W | JEDEC standard test conditions, N-8 package | 4 |
| Thermal resistance, junction-to-case, N-8 PDIP | θJC |  | 37.4 |  | °C/W | 100 µm TIM, N-8 package | 4 |

## CAD (KiCad official)

- Symbol: `AD780ANZ`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files: `ad780anz-etched.step` / `ad780anz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad780anz.step` / `ad780anz.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/8588929071954997248) (12 pp, sha256 `db43df084d801b07`, retrieved 2026-10-16, 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/ad780anz-datasheet.pdf)