component
ADR421BRZ-REEL7
Public Made by Adomby adom
Analog Devices Voltage Reference, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ADR421BRZ-REEL7
Analog Devices · Voltage Reference · SOIC-8
ADR421BRZ-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 | TP | unconnected | Test pin: an actual connection exists but is reserved for factory test, and the user should not connect anything to it or the device may not function correctly. |
| 2 | VIN | power_in | Input voltage; the ADR421 operating input range is 4.5 V to 18 V, and VIN must be at least 2 V above VOUT. |
| 3 | NIC | unconnected | No internal connection. |
| 4 | GND | power_in | Ground pin, 0 V. |
| 5 | TRIM | input | Trim pin that adjusts the output voltage within ±0.5% without affecting the temperature coefficient. |
| 6 | VOUT | power_out | Voltage reference output; the ADR421 nominal output is 2.50 V with a 10 mA maximum output current capability. |
| 7 | NIC | unconnected | No internal connection. |
| 8 | TP | unconnected | Test pin: an actual connection exists but is reserved for factory test, and the user should not connect anything to it or the device may not function correctly. |
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 |
|---|---|---|---|---|---|---|---|
| Output voltage (B grade) | VOUT | 2.499 | 2.5 | 2.501 | V | VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted | 4 |
| Initial accuracy (B grade) | VOUTERR | -1 | 1 | mV | VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted | 4 | |
| Initial accuracy (B grade) | VOUTERR | -0.04 | 0.04 | % | VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted | 4 | |
| Temperature coefficient (B grade) | TCVOUT | 1 | 3 | ppm/°C | −40°C < TA < +125°C | 4 | |
| Supply voltage headroom | VIN − VOUT | 2 | V | 4 | |||
| Line regulation | ΔVOUT/ΔVIN | 10 | 35 | ppm/V | VIN = 5 V to 18 V, −40°C < TA < +125°C | 4 | |
| Load regulation | ΔVOUT/ΔIL | 70 | ppm/mA | IL = 0 mA to 10 mA, −40°C < TA < +125°C | 4 | ||
| Supply current | IIN | 390 | 500 | µA | No load | 4 | |
| Supply current over temperature | IIN | 600 | µA | No load, −40°C < TA < +125°C | 4 | ||
| Supply voltage (absolute maximum) | 18 | V | Rated relative to 25°C unless otherwise noted | 7 | |||
| Storage temperature range | -65 | 150 | °C | 7 | |||
| Operating temperature range | -40 | 125 | °C | 7 | |||
| Junction temperature range | -65 | 150 | °C | 7 | |||
| Pin temperature (soldering, 60 s) | 300 | °C | Soldering, 60 seconds | 7 | |||
| Thermal resistance, junction-to-ambient (8-lead SOIC, R-8) | θJA | 130 | °C/W | Surface-mount package soldered to circuit board (worst case) | 7 | ||
| Supply voltage operating range (ADR421) | VIN | 4.5 | 18 | V | ADR421 input voltage range | 1 | |
| Guaranteed load current | IL | 10 | mA | Input voltage range 4.5 V to 18 V | 16 |
CAD (KiCad official)
- Symbol:
ADR421BRZ-REEL7 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
adr421brz-reel7-etched.step/adr421brz-reel7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adr421brz-reel7.step/adr421brz-reel7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (24 pp, sha256
8803a0f5075e3774, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# ADR421BRZ-REEL7
**Analog Devices** · Voltage Reference · SOIC-8
ADR421BRZ-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 | TP | unconnected | Test pin: an actual connection exists but is reserved for factory test, and the user should not connect anything to it or the device may not function correctly. |
| 2 | VIN | power_in | Input voltage; the ADR421 operating input range is 4.5 V to 18 V, and VIN must be at least 2 V above VOUT. |
| 3 | NIC | unconnected | No internal connection. |
| 4 | GND | power_in | Ground pin, 0 V. |
| 5 | TRIM | input | Trim pin that adjusts the output voltage within ±0.5% without affecting the temperature coefficient. |
| 6 | VOUT | power_out | Voltage reference output; the ADR421 nominal output is 2.50 V with a 10 mA maximum output current capability. |
| 7 | NIC | unconnected | No internal connection. |
| 8 | TP | unconnected | Test pin: an actual connection exists but is reserved for factory test, and the user should not connect anything to it or the device may not function correctly. |
## 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 |
|---|---|---|---|---|---|---|---|
| Output voltage (B grade) | VOUT | 2.499 | 2.5 | 2.501 | V | VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted | 4 |
| Initial accuracy (B grade) | VOUTERR | -1 | | 1 | mV | VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted | 4 |
| Initial accuracy (B grade) | VOUTERR | -0.04 | | 0.04 | % | VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted | 4 |
| Temperature coefficient (B grade) | TCVOUT | | 1 | 3 | ppm/°C | −40°C < TA < +125°C | 4 |
| Supply voltage headroom | VIN − VOUT | 2 | | | V | | 4 |
| Line regulation | ΔVOUT/ΔVIN | | 10 | 35 | ppm/V | VIN = 5 V to 18 V, −40°C < TA < +125°C | 4 |
| Load regulation | ΔVOUT/ΔIL | | | 70 | ppm/mA | IL = 0 mA to 10 mA, −40°C < TA < +125°C | 4 |
| Supply current | IIN | | 390 | 500 | µA | No load | 4 |
| Supply current over temperature | IIN | | | 600 | µA | No load, −40°C < TA < +125°C | 4 |
| Supply voltage (absolute maximum) | | | | 18 | V | Rated relative to 25°C unless otherwise noted | 7 |
| Storage temperature range | | -65 | | 150 | °C | | 7 |
| Operating temperature range | | -40 | | 125 | °C | | 7 |
| Junction temperature range | | -65 | | 150 | °C | | 7 |
| Pin temperature (soldering, 60 s) | | | | 300 | °C | Soldering, 60 seconds | 7 |
| Thermal resistance, junction-to-ambient (8-lead SOIC, R-8) | θJA | | 130 | | °C/W | Surface-mount package soldered to circuit board (worst case) | 7 |
| Supply voltage operating range (ADR421) | VIN | 4.5 | | 18 | V | ADR421 input voltage range | 1 |
| Guaranteed load current | IL | | | 10 | mA | Input voltage range 4.5 V to 18 V | 16 |
## CAD (KiCad official)
- Symbol: `ADR421BRZ-REEL7`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `adr421brz-reel7-etched.step` / `adr421brz-reel7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `adr421brz-reel7.step` / `adr421brz-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/8586177369446604800) (24 pp, sha256 `8803a0f5075e3774`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/adr421brz-reel7-datasheet.pdf)