# ADR444ARZ-REEL7

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

ADR444ARZ-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 | DNC | unconnected | Do not connect; the datasheet says not to connect anything to this pin. |
| 2 | VIN | power_in | Input voltage connection; for the ADR444 the supply operating range is 4.6 V to 18 V, with a minimum headroom of 500 mV above VOUT. |
| 3 | NIC | unconnected | Not internally connected; this pin is not connected inside the device. |
| 4 | GND | power_in | Ground connection for the device. |
| 5 | TRIM | passive | Output voltage trim; allows the output voltage to be adjusted over a 0.5% range without compromising performance, typically via a potentiometer between VOUT and GND with the wiper on TRIM. |
| 6 | VOUT | power_out | Output voltage; the device can source up to 10 mA and sink up to -5 mA. |
| 7 | NIC | unconnected | Not internally connected; this pin is not connected inside the device. |
| 8 | DNC | unconnected | Do not connect; the datasheet says not to connect anything to this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Power Management ICs |
| 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, A grade | VOUT | 4.091 | 4.096 | 4.101 | V |  | 6 |
| Initial accuracy, A grade | VOERR | -5 |  | 5 | mV |  | 6 |
| Supply voltage operating range | VIN | 4.6 |  | 18 | V |  | 6 |
| Temperature coefficient, A grade | TCVOUT |  | 2 | 10 | ppm/°C | −40°C < TA < +125°C | 6 |
| Line regulation | ΔVOUT/ΔVIN |  | 10 | 20 | ppm/V | −40°C < TA < +125°C | 6 |
| Load regulation, sourcing | ΔVOUT/ΔILOAD | -50 |  | 50 | ppm/mA | ILOAD = 0 mA to 10 mA, VIN = 5.5 V, −40°C < TA < +125°C | 6 |
| Load regulation, sinking | ΔVOUT/ΔILOAD | -50 |  | 50 | ppm/mA | ILOAD = 0 mA to −5 mA, VIN = 5.5 V, −40°C < TA < +125°C | 6 |
| Quiescent current | IIN |  | 3 | 3.75 | mA | No load, −40°C < TA < +125°C | 6 |
| Supply voltage (absolute maximum) |  |  |  | 20 | V |  | 8 |
| Storage temperature range |  | -65 |  | 125 | °C |  | 8 |
| Operating temperature range |  | -40 |  | 125 | °C |  | 8 |
| Junction temperature range |  | -65 |  | 150 | °C |  | 8 |
| Lead temperature, soldering (60 sec) |  |  |  | 300 | °C | 60 sec | 8 |
| Thermal resistance, junction-to-ambient, 8-lead SOIC (R suffix) | θJA |  | 130 |  | °C/W | 8-Lead SOIC (R Suffix), surface-mount soldered in circuit board, worst case | 8 |
| Thermal resistance, junction-to-case, 8-lead SOIC (R suffix) | θJC |  | 43 |  | °C/W | 8-Lead SOIC (R Suffix) | 8 |

## CAD (KiCad official)

- Symbol: `ADR444ARZ-REEL7`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `adr444arz-reel7-etched.step` / `adr444arz-reel7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `adr444arz-reel7.step` / `adr444arz-reel7.glb` are the bare package body.

## 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/ADR440_441_443_444_445.pdf) (19 pp, sha256 `a10029bd83a68310`, retrieved 2026-10-30, tier: manufacturer)
- **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/adr444arz-reel7-datasheet.pdf)