# ADR443ARZ

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

ADR443ARZ 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; do not connect to this pin. |
| 2 | VIN | power_in | Input voltage connection; operating range 3.5 V to 18 V for the ADR443 (VOUT + 500 mV headroom), 20 V absolute maximum. |
| 3 | NIC | unconnected | Not Internally Connected; this pin is not connected internally. |
| 4 | GND | power_in | Ground. |
| 5 | TRIM | passive | Output voltage trim pin that adjusts the output over a ±0.5% range via a potentiometer between VOUT and GND. |
| 6 | VOUT | power_out | Output voltage of 3.000 V, sourcing up to 10 mA and sinking up to -5 mA. |
| 7 | NIC | unconnected | Not Internally Connected; this pin is not connected internally. |
| 8 | DNC | unconnected | Do Not Connect; do not connect 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 | 2.996 | 3 | 3.004 | V | VIN = 3.5 V to 18 V, TA = 25°C, CIN = COUT = 0.1 µF | 5 |
| Initial Accuracy (A Grade) | VOERR | -4 |  | 4 | mV |  | 5 |
| Initial Accuracy (A Grade) | VOERR |  | 0.13 |  | % |  | 5 |
| Temperature Coefficient (A Grade) | TCVOUT |  | 2 | 10 | ppm/°C | −40°C < TA < +125°C | 5 |
| Line Regulation | ΔVOUT/ΔVIN |  | 10 | 20 | ppm/V | −40°C < TA < +125°C | 5 |
| Load Regulation (sourcing) | ΔVOUT/ΔILOAD | -50 |  | 50 | ppm/mA | ILOAD = 0 mA to 10 mA, VIN = 5 V, −40°C < TA < +125°C | 5 |
| Load Regulation (sinking) | ΔVOUT/ΔILOAD | -50 |  | 50 | ppm/mA | ILOAD = 0 mA to −5 mA, VIN = 5 V, −40°C < TA < +125°C | 5 |
| Quiescent Current | IIN |  | 3 | 3.75 | mA | No load, −40°C < TA < +125°C | 5 |
| Supply Voltage Operating Range | VIN | 3.5 |  | 18 | V |  | 5 |
| Output Current Capacity, Sourcing | ILOAD |  | 10 |  | mA | Sourcing | 5 |
| Output Current Capacity, Sinking | ILOAD |  | -5 |  | mA | Sinking | 5 |
| Voltage Noise | eN p-p |  | 1.4 |  | µV p-p | 0.1 Hz to 10 Hz | 5 |
| Voltage Noise Density | eN |  | 57.6 |  | nV/√Hz | 1 kHz | 5 |
| Turn-On Settling Time | tR |  | 10 |  | µs |  | 5 |
| Long-Term Stability | ∆VOUT |  | 50 |  | ppm | 1000 hours | 5 |
| Output Voltage Hysteresis | VOUT_HYS |  | 70 |  | ppm |  | 5 |
| Ripple Rejection Ratio | RRR |  | -80 |  | dB | fIN = 1 kHz | 5 |
| Short Circuit to GND | ISC |  | 27 |  | mA |  | 5 |
| Supply Voltage Headroom | VIN − VOUT |  | 500 |  | mV |  | 5 |
| Supply Voltage |  |  |  | 20 | V | TA = 25°C | 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 |  |  |  | 300 | °C | 60 sec | 8 |
| Thermal Resistance Junction-to-Ambient | θJA |  | 130 |  | °C/W | 8-Lead SOIC (R Suffix) | 8 |
| Thermal Resistance Junction-to-Case | θJC |  | 43 |  | °C/W | 8-Lead SOIC (R Suffix) | 8 |

## CAD (KiCad official)

- Symbol: `ADR443ARZ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `adr443arz-etched.step` / `adr443arz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `adr443arz.step` / `adr443arz.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 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/adr443arz-datasheet.pdf)