component
REF3120AQDBZRQ1
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownREF3120AQDBZRQ1
Texas Instruments · Voltage Reference · SOT-23-3
REF3120AQDBZRQ1 from Texas Instruments, in a SOT-23-3. 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 | IN | power_in | Input supply pin; the datasheet's recommended input range is VREF + 0.05 V to 5.5 V, and the absolute maximum supply voltage is 7 V. |
| 2 | OUT | power_out | Voltage reference output, rated for ±10 mA output current (source and sink) with a short-circuit current of 50 mA source and 40 mA sink, and the datasheet states no output capacitor is required. |
| 3 | GND | power_in | Ground reference pin for the reference. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
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 (REF3120, 2.048 V) | VOUT | 2.0439 | 2.048 | 2.0521 | V | TA = 25°C, ILOAD = 0mA, VIN = 5V | 5 |
| Initial accuracy | -0.2 | 0.2 | % | TA = 25°C, ILOAD = 0mA, VIN = 5V | 5 | ||
| Output voltage noise, 0.1 Hz to 10 Hz | 27 | μVPP | f = 0.1Hz to 10Hz | 5 | |||
| Output voltage noise, 10 Hz to 10 kHz | 39 | μVRMS | f = 10Hz to 10kHz | 5 | |||
| Output voltage temperature drift, 0°C to 70°C | dVOUT/dT | 5 | 15 | ppm/°C | TA = 0°C to 70°C | 5 | |
| Output voltage temperature drift, -40°C to +125°C | dVOUT/dT | 10 | 20 | ppm/°C | TA = –40°C to +125°C | 5 | |
| Line regulation | 20 | 65 | ppm/V | VREF + 0.05 ≤ VIN ≤ 5.5 V | 5 | ||
| Load regulation, sourcing | dVOUT/dILOAD | 10 | 30 | µV/mA | 0mA < ILOAD < 10mA, VIN = VREF + 250mV | 5 | |
| Load regulation, sinking | dVOUT/dILOAD | 20 | 50 | µV/mA | -10mA < ILOAD < 0mA, VIN = VREF + 100mV | 5 | |
| Thermal hysteresis, first cycle | dT | 100 | ppm | First cycle | 5 | ||
| Thermal hysteresis, additional cycles | dT | 25 | ppm | Additional cycles | 5 | ||
| Long-term stability | 70 | ppm | 0 to 1000 hours | 5 | |||
| Dropout voltage (VIN - VOUT) | VIN - VOUT | 5 | 50 | mV | TA = –40°C to +125°C | 5 | |
| Output current | ILOAD | -10 | 10 | mA | 5 | ||
| Short-circuit current, sourcing | ISC | 50 | mA | Sourcing | 5 | ||
| Short-circuit current, sinking | ISC | 40 | mA | Sinking | 5 | ||
| Turn-on settling time | 400 | µs | VIN = +5V, CL = 0μF, to 0.1% accuracy | 5 | |||
| Supply voltage (VS) | VS | 5.5 | V | ILOAD = 0, TA = –40°C to +125°C; minimum printed as VREF + 0.05 | 5 | ||
| Quiescent current at 25°C | IQ | 100 | 115 | µA | ILOAD = 0, TA = 25°C | 6 | |
| Quiescent current over temperature | IQ | 115 | 135 | µA | ILOAD = 0, TA = –40°C to +125°C | 6 | |
| Supply voltage, V+ to V- | V+ - V- | 7 | V | 4 | |||
| Operating temperature (absolute maximum) | -55 | 135 | °C | Natural ventilation | 4 | ||
| Junction temperature | 150 | °C | 4 | ||||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| ESD, human body model (HBM) | V(ESD) | -2000 | 2000 | V | ANSI/ESDA/JEDEC JS-001 | 4 | |
| ESD, charged device model (CDM) | V(ESD) | -1000 | 1000 | V | JEDEC JESD22-C101 | 4 | |
| Input voltage VIN | VIN | 5.5 | V | Minimum printed as VREF + 0.05 | 4 | ||
| Load current | ILOAD | 25 | mA | 4 | |||
| Operating temperature | TA | -40 | 125 | °C | 4 | ||
| Junction-to-ambient thermal resistance (DBZ) | RθJA | 292.9 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-case (top) thermal resistance (DBZ) | RθJC(top) | 124.4 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-board thermal resistance (DBZ) | RθJB | 89 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-top characterization parameter (DBZ) | ψJT | 11.4 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-board characterization parameter (DBZ) | ψJB | 87.6 | °C/W | DBZ (SOT-23), 3 pins | 4 |
CAD (KiCad official)
- Symbol:
REF3120AQDBZRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
ref3120aqdbzrq1-etched.step/ref3120aqdbzrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ref3120aqdbzrq1.step/ref3120aqdbzrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
03980e8e34baffa1, retrieved 2026-10-11, 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).