# ADR434BRZ

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

ADR434BRZ 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 anything to this pin. |
| 2 | VIN | power_in | Input voltage connection; the datasheet gives the ADR434 operating supply range as 6.1 V to 18 V. |
| 3 | NIC | unconnected | Not Internally Connected; this pin is not connected internally. |
| 4 | GND | power_in | Ground reference pin for the reference. |
| 5 | TRIM | passive | Output voltage trim terminal used to adjust VOUT; the applications section states the adjustment range as ±0.5%. |
| 6 | VOUT | power_out | Reference output voltage; the ADR434 nominal output is 4.096 V. |
| 7 | COMP | passive | Compensation input; connect a series resistor and capacitor network from COMP to VOUT to reduce overall noise. |
| 8 | DNC | unconnected | Do Not Connect; do not connect anything to this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Power Supply Chip |
| 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, B grade | VOUT | 4.0945 | 4.096 | 4.0975 | V |  | 7 |
| Initial accuracy, B grade (mV) | VOERR | -1.5 |  | 1.5 | mV |  | 7 |
| Initial accuracy, B grade (%) | VOERR | -0.04 |  | 0.04 | % |  | 7 |
| Trim range |  | -5 |  | 5 | % |  | 7 |
| Temperature coefficient, B grade | TCVOUT |  | 1 | 3 | ppm/°C | −40°C < TA < +125°C | 7 |
| Line regulation | ∆VOUT/∆VIN |  | 5 | 20 | ppm/V | VIN = 6.1 V to 18 V, −40°C < TA < +125°C | 7 |
| Quiescent current | IIN |  | 595 | 800 | µA | No load, −40°C < TA < +125°C | 7 |
| Supply voltage operating range | VIN | 6.1 |  | 18 | V |  | 7 |
| Absolute maximum supply voltage |  |  |  | 20 | V |  | 9 |
| Storage temperature range |  | -65 |  | 150 | °C |  | 9 |
| Operating temperature range |  | -40 |  | 125 | °C |  | 9 |
| Junction temperature range |  | -65 |  | 150 | °C |  | 9 |
| Lead temperature, soldering |  |  |  | 300 | °C | 60 sec | 9 |
| Thermal resistance junction-to-ambient, SOIC_N | θJA |  | 130 |  | °C/W | 8-Lead SOIC_N (R) | 9 |
| Thermal resistance junction-to-case, SOIC_N | θJC |  | 43 |  | °C/W | 8-Lead SOIC_N (R) | 9 |
| Load regulation, sourcing range | ∆VOUT/∆IL |  | 15 |  | ppm/mA | IL = 0 mA to 10 mA, VIN = 7 V, −40°C < TA < +125°C | 7 |
| Load regulation, sinking range | ∆VOUT/∆IL |  | 15 |  | ppm/mA | IL = −10 mA to 0 mA, VIN = 7 V, −40°C < TA < +125°C | 7 |
| Output current capacity, sourcing | IL |  | 30 |  | mA | Sourcing | 7 |
| Output current capacity, sinking | IL |  | -20 |  | mA | Sinking | 7 |
| Voltage noise, peak-to-peak | eN p-p |  | 6.25 |  | µV p-p | 0.1 Hz to 10.0 Hz | 7 |
| Voltage noise density | eN |  | 100 |  | nV/√Hz | 1 kHz | 7 |
| Turn-on settling time | tR |  | 10 |  | µs | CL = 0 µF | 7 |
| Long-term stability | ∆VOUT |  | 40 |  | ppm | 1000 hours | 7 |
| Output voltage hysteresis | VOUT_HYS |  | 20 |  | ppm |  | 7 |
| Ripple rejection ratio | RRR |  | -70 |  | dB | fIN = 1 kHz | 7 |
| Short circuit current to GND | ISC |  | 40 |  | mA |  | 7 |
| Supply voltage headroom | VIN − VOUT |  | 2 |  | V |  | 7 |

## CAD (KiCad official)

- Symbol: `ADR434BRZ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `adr434brz-etched.step` / `adr434brz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `adr434brz.step` / `adr434brz.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/ADR430_431_433_434_435.pdf) (23 pp, sha256 `8474920b519323a1`, 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/adr434brz-datasheet.pdf)