REF5030AIDGKR-Q1 - 3V Precision Voltage Ref | TI | AEC-Q100
MPN: REF5030AIDGKR-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.2 | $22.00 |
| 100 | $1.85 | $185.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.3 | $1,300.00 |
Drop-in alternatives for REF5030AIDGKR-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
REF5030AIDGKR
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →REF5025AIDGKR-Q1
⚡ Same Package📋 Reference alternative (not in catalog)
REF5045AIDGKR-Q1
⚡ Same Package📋 Reference alternative (not in catalog)
REF5050AIDGKR-Q1
⚡ Same Package📋 Reference alternative (not in catalog)
REF5030AIDGKR-Q1 Maximum Ratings & Electrical Characteristics
| Output Voltage | 3 V (fixed) |
| Initial Accuracy | ±0.05% (A grade) |
| Temperature Drift | 3 ppm/C (typ) |
| Output Current | ±10 mA (source/sink) |
| Input Voltage Range | 3.2 V to 18 V |
| Quiescent Current | 0.8 mA (typ) |
| Low-Frequency Noise | 3 uVpp (0.1 Hz to 10 Hz, typ) |
| Temperature Range | -40C to +125C |
| Qualification | AEC-Q100 (automotive) |
| Topology | Series voltage reference |
| Special Features | TRIM/NR pin, sink/source capability |
| Package | 8-VSSOP (DGK), 8 pins |
| Package Dimensions | 3 mm x 3 mm, 0.95 mm max height |
| Mounting Type | Surface Mount |
| Packaging | Tape and Reel |
| Series | REF5030 |
| RoHS Status | Compliant |
REF5030AIDGKR-Q1 Pin Configuration
| Pin 1 | VIN — Input supply, 3.2V to 18V |
| Pin 2 | GND — Ground |
| Pin 3 | TRIM/NR — Output trim and noise reduction pin |
| Pin 4 | NC — No connect |
| Pin 5 | NC — No connect |
| Pin 6 | TEMP — Temperature pin / no-connect per variant - verify in datasheet |
| Pin 7 | VOUT — 3V regulated reference output |
| Pin 8 | NC — No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
REF5030AIDGKR-Q1 is suitable for 6 applications: Automotive Battery Management Systems, Precision ADC/DAC Reference in Industrial Data Acquisition, Medical Instrumentation Analog Front Ends, Test and Measurement Equipment, Sensor Excitation and Bridge Measurement, Automotive Power Calibration and ADAS Analog Rails.
Automotive Battery Management Systems
In BMS slave and master boards, cell-voltage measurement chains rely on the ADC reference for absolute accuracy; a 0.05% reference bounds total measurement error to roughly 1.5mV at 3V full scale. The REF5030AIDGKR-Q1 is AEC-Q100 qualified for -40C to +125C, surviving under-hood and passenger-compartment ambient extremes. Its 3.2V to 18V input accepts automotive 12V rails through a pre-regulator, and the 10mA source/sink capability handles reference-input transients from switched-capacitor ADCs. Pair with the BQ76952Q-Q1 battery monitor for a complete automotive pack monitoring front end.
Recommended
Precision ADC/DAC Reference in Industrial Data Acquisition
High-resolution converters translate reference error directly into system error: for a 16-bit ADC, 1 LSB is 46uV at 3V, so the REF5030AIDGKR-Q1's 0.05% initial accuracy (about 1.5mV) plus 3ppm/C drift (about 5uV over 10C) keeps total reference-induced error below 1 LSB of drift across temperature. The 0.1Hz-to-10Hz noise of roughly 3uVpp suits oversampled sigma-delta converters. The TRIM/NR capacitor further filters broadband noise, and 10mA sourcing drives reference buffers or direct ADC REF inputs.
Recommended
Medical Instrumentation Analog Front Ends
Patient-monitoring and diagnostic equipment demand gain-calibrated measurement chains where long-term drift, not just initial accuracy, determines recalibration intervals. The REF5030AIDGKR-Q1's 3ppm/C drift means under 150uV shift over a 25C clinical environment swing, keeping biosignal gains stable. Its sink capability prevents reference push-out when ADC reference pins dump charge. Low quiescent current of 0.8mA supports battery-powered portable monitors, and the low-noise NR filtering preserves the microvolt-level signal floor required by ECG and impedance-measurement front ends.
Recommended
Test and Measurement Equipment
Bench multimeters, DAQ modules, and calibration fixtures need references that hold spec between annual calibrations. The REF5030 family's combination of 0.05% initial accuracy and very low drift enables self-calibrated instruments with software correction only. Because the part can both source and sink 10mA, it tolerates reverse current from bridge-excitation or DAC feedback circuits without output-polarity problems. The wide 18V VIN allows direct connection to internal bench supply rails after simple pre-filtering, simplifying power-tree design in compact instruments.
Recommended
Sensor Excitation and Bridge Measurement
Wheatstone-bridge pressure, load-cell, and RTD front ends need a ratiometric excitation source: sensor output is proportional to the excitation voltage, so reference accuracy matters less than stability, but low noise is critical. The REF5030AIDGKR-Q1 supplies bridge excitation from 3.2V minimum input and its TRIM pin allows factory gain calibration per unit. With 10mA drive, small bridges can be excited directly; larger bridges use a buffer inside the reference loop. Automotive-qualified grade supports in-cabin and powertrain sensor modules.
Recommended
Automotive Power Calibration and ADAS Analog Rails
ADAS sensor modules (radar, camera) and domain controllers contain sensitive analog blocks that require a known-accurate supply-derived reference for their converters. The REF5030AIDGKR-Q1 provides the precision 3V node, while the 18V maximum input and -Q1 AEC-Q100 rating make it compatible with 12V automotive net pre-regulation. The TRIM/NR pin lets production test trim each module's analog gain, tightening unit-to-unit consistency across fleets. Its 0.8mA draw is negligible against module budgets, and the small 3x3mm VSSOP-8 saves board area on dense sensor PCBs.
Recommended
Recommended Products Summary
Engineering reference data for REF5030AIDGKR-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | REF5030AIDGKR | ADR4530 | REF3030AIDBZR-Q1 |
|---|---|---|---|---|
| Package | VSSOP-8 (DGK) 3x3mm | VSSOP-8 (DGK) - same | SOIC-8 | SOT-23-8 |
| Brand | Texas Instruments | Texas Instruments | Analog Devices | Texas Instruments |
| Output Voltage | 3 V | 3 V | 3 V | 3 V |
| Initial Accuracy (max) | ±0.05% (A grade) | ±0.05% | ±0.02% | ±0.2% |
| Temp Drift (max) | 3 ppm/C (typ, A) | 3 ppm/C (typ) | 2 ppm/C | 75 ppm/C (max) |
| Output Current | ±10 mA (source/sink) | ±10 mA | ±10 mA | 25 mA (source) |
| Input Voltage Range | 3.2V to 18V | 3.2V to 18V | [DATA_NEEDED] | [DATA_NEEDED] |
| Quiescent Current | 0.8 mA (typ) | 0.8 mA (typ) | 1.1 mA (typ) | 50 uA (typ) |
| AEC-Q100 | Qualified (-Q1) | Not qualified | Not qualified | Qualified |
Key Differentiators
- AEC-Q100 automotive qualification (vs REF5030AIDGKR)
- Sink and source capability (vs REF3030AIDBZR-Q1)
- Lowest noise floor via NR pin (vs ADR4530)
Design Notes
Place a 10uF ceramic output capacitor and a 0.1uF high-frequency bypass within 5mm of VOUT, and a 1uF input capacitor at VIN. Connect the NR/TRIM capacitor (1uF to 10uF per TI REF50xx datasheet typical application) to a quiet ground to filter reference noise for 16- to 24-bit converters. Keep high-current switching loops away from the reference ground return; star-ground the reference node.
Dissipation is (VIN - 3V) x I_load + 0.8mA VIN quiescent. At 18V input with 10mA load, roughly 158mV-scaled 0.15W dissipation occurs in the 3x3mm VSSOP-8; theta_JA depends on board copper, so use at least 4x thermal vias to a ground plane when operating at high VIN and high ambient to keep junction well below 125C.
Do not let VIN dip below 3.2V or regulation is lost - verify startup with a soft-starting upstream supply. When using the TRIM pin, account for trim range vs noise-filter trade-off: large NR capacitors lengthen startup settling. Reference-input transients from SAR ADCs can exceed 10mA briefly; add a buffer (e.g., OPA827) if a direct drive shows droop.
Compliance Information
AEC-Q100 qualified per TI product page (-Q1 suffix). RoHS/lead-free compliant per standard TI catalog-part compliance. REACH and halogen-free status not stated in provided data.
