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Texas Instruments REF2030AIDDCT
- Part No.:
- REF2030AIDDCT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
REF2030AIDDCT.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,920
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Product details
Overview
REF2030AIDDCT from Texas Instruments is a dual-output, low-drift voltage reference IC providing precision VREF = 3.0 V and VBIAS = 1.5 V outputs in a single SOT-23-5 package. It delivers ±0.05% initial accuracy, 8 ppm/°C max temperature drift (–40°C to 125°C), and 6 ppm/°C max VREF/VBIAS tracking over –40°C to 85°C - enabling high-accuracy biasing of bipolar ADC inputs in single-supply industrial measurement systems.
For engineers reviewing the REF2030AIDDCT datasheet, REF2030AIDDCT pinout, REF2030AIDDCT application, or REF2030AIDDCT equivalent, this device supports precision analog signal chains requiring matched dual references with ultra-low dropout (10 mV), ±20 mA output drive, and sub-430 µA quiescent current - critical for battery-powered meters, servo drives, and clinical instrumentation.
Technical Context
The REF2030AIDDCT integrates a band-gap core with two independent e-Trim™-calibrated output buffers: one delivering VREF = 3.0 V, the other generating VBIAS = VREF / 2 = 1.5 V via precision resistor dividers. Both outputs share identical electrical specifications including accuracy, drift, and regulation performance.
Its enable input (EN) controls active/shutdown modes with logic-level compatibility (EN ≥ VIN – 0.7 V), while low dropout (10 mV at 20 mA) allows operation from supplies as low as 3.02 V. The device maintains <6 ppm/°C VREF–2×VBIAS tracking across temperature, ensuring stable common-mode bias for differential ADC front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VREF Output | 3.0 V nominal - provides primary reference for 12–16-bit ADCs and DACs |
| VBIAS Output | 1.5 V nominal (VREF / 2) - enables mid-rail biasing of bipolar analog inputs |
| Initial Accuracy | ±0.05% max - reduces system calibration burden and improves absolute measurement fidelity |
| Temp Drift (VREF/VBIAS) | 8 ppm/°C max (–40°C to 125°C) - ensures <±0.01% output shift over full industrial range |
| VREF–VBIAS Tracking | 6 ppm/°C max (–40°C to 85°C) - maintains precise 2:1 ratio for differential signal conditioning |
| Quiescent Current | 360 µA typical - supports always-on precision monitoring in energy-constrained systems |
| Dropout Voltage | 10 mV at 20 mA - permits operation from 3.02 V supply, ideal for Li-ion or coin-cell applications |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body size) with exposed pad not electrically connected; RoHS-compliant matte-Sn finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VBIAS | Output | Provides 1.5 V bias voltage (VREF / 2); sinks/sources ±20 mA with matched specs to VREF |
| 2 - GND | Reference | Analog ground return for both outputs and internal band-gap core; requires low-impedance PCB connection |
| 3 - EN | Input | Enable control: device active when EN ≥ VIN – 0.7 V; shutdown draws ≤5 µA |
| 4 - VIN | Input | Supply input (3.02 V to 5.5 V); powers internal regulator and output buffers |
| 5 - VREF | Output | Primary 3.0 V reference output; same accuracy, drift, and regulation as VBIAS |
Key Features
| Feature | Design Value |
|---|---|
| Dual matched outputs | VREF = 3.0 V and VBIAS = 1.5 V with ≤6 ppm/°C tracking - eliminates need for external resistor divider and matching components |
| e-Trim™ calibration | Factory-trimmed at package level for ±0.05% initial accuracy and 8 ppm/°C drift - minimizes post-assembly calibration |
| Low dropout operation | 10 mV dropout at 20 mA load - enables use with low-headroom supplies such as 3.3 V LDOs or partially discharged batteries |
| High output drive | ±20 mA sourcing/sinking on both outputs - directly drives ADC reference inputs, op-amp bias networks, and small loads without buffering |
| Stable capacitive loading | 0–10 µF output capacitor support - accommodates standard ceramic decoupling without oscillation risk |
Applications
| Electricity Meter | Analog Input Module |
|---|---|
Use Scenario: High-accuracy energy measurement in Class 0.2 and 0.5 smart meters with isolated ADC front-ends. IC Role / Device Role / Timing Role: Provides VREF for 24-bit sigma-delta ADC and VBIAS for mid-rail biasing of current-sense amplifier outputs. Use Value: Enables <±0.01% total error over –25°C to 70°C using single-component dual-reference solution, reducing BOM count vs discrete alternatives. |
Use Scenario: Industrial PLC analog input card acquiring ±10 V, 4–20 mA, and thermocouple signals. IC Role / Device Role / Timing Role: Supplies matched 3.0 V reference and 1.5 V common-mode bias to multiplexed instrumentation amplifier and ADC stages. Use Value: Maintains <±0.005% gain error contribution across temperature due to 6 ppm/°C VREF–VBIAS tracking, improving channel-to-channel consistency. |
| Servo Drive Control Module | Clinical Digital Thermometer |
Use Scenario: Position feedback loop in closed-loop motor drives requiring precise current sensing and encoder interface. IC Role / Device Role / Timing Role: Delivers stable 3.0 V reference to current-shunt amplifier and 1.5 V bias to differential ADC sampling motor phase voltages. Use Value: Achieves <±0.02% linearity error over –40°C to 105°C operating range, supporting IEC 61800-3 EMC compliance without recalibration. |
Use Scenario: Medical-grade digital thermometer with thermistor-based sensing and 16-bit ADC digitization. IC Role / Device Role / Timing Role: Generates 3.0 V reference for ratiometric ADC conversion and 1.5 V bias for thermistor bridge excitation. Use Value: Ensures <±0.05 °C absolute accuracy over 0°C to 50°C patient range by eliminating VREF/VBIAS ratio drift-induced offset errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF2030AIDCKR | SOT-23-5 with tape-and-reel packaging; identical electrical specs and pinout | No functional difference; optimized for automated SMT assembly | Select for high-volume production where reel packaging aligns with pick-and-place requirements |
| ADR4530BRZ | Single-output 3.0 V reference (SOIC-8); no VBIAS output; 3 ppm/°C drift, ±0.02% accuracy | Requires external resistor network to generate 1.5 V bias; higher accuracy but larger footprint and added component tolerance error | Choose when ultimate drift performance is prioritized and board space allows discrete bias generation |
Compared with REF2030AIDDCT, REF2030AIDCKR offers identical performance in reel format for volume manufacturing, while ADR4530BRZ trades integrated VBIAS functionality for lower drift and higher initial accuracy - making it suitable only when external bias generation is acceptable and SOIC-8 footprint is viable.
Availability
REF2030AIDDCT is available at Aetrix Electronics and suitable for electricity metering, analog I/O modules, servo drive control, and clinical instrumentation requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for REF2030AIDDCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision voltage references and signal-chain solutions.
The REF20xx family was designed specifically for high-accuracy industrial measurement systems needing dual-rail references in ultra-small packages - targeting applications where board space, power efficiency, and thermal stability are critical constraints.
FAQ
What is the maximum load current supported by each output of the REF2030AIDDCT?
The REF2030AIDDCT supports ±20 mA sourcing and sinking capability on both the VREF and VBIAS outputs. This allows direct driving of ADC reference inputs, op-amp bias networks, and small resistive loads without external buffering. Performance remains within specification up to 20 mA, with dropout voltage increasing to 600 mV only under short-circuit conditions.
Does the REF2030AIDDCT require an external output capacitor for stability?
No, the REF2030AIDDCT is internally compensated and stable with 0 µF to 10 µF output capacitance. Unlike many references, it does not require a minimum capacitor value - enabling use with zero external capacitance in space-constrained designs or with large bulk capacitors for noise filtering without risk of oscillation.
How does the enable (EN) pin function on the REF2030AIDDCT?
The EN pin on the REF2030AIDDCT is a logic-compatible input: the device operates in active mode when EN ≥ VIN – 0.7 V, and enters shutdown mode drawing ≤5 µA when EN < 0.7 V. No pull-up or pull-down resistor is required, and EN can be driven directly from MCU GPIO or system power-good signals.
What is the VREF–VBIAS tracking specification for the REF2030AIDDCT over its full temperature range?
Over –40°C to 125°C, the REF2030AIDDCT guarantees VREF–2×VBIAS tracking within ±7 ppm/°C. At the narrower –40°C to 85°C range, tracking tightens to ±6 ppm/°C. This ensures the 2:1 ratio remains stable enough to eliminate common-mode error in differential signal paths across industrial operating conditions.
Is the REF2030AIDDCT compatible with lead-free reflow soldering processes?
Yes, the REF2030AIDDCT (AIDDCT variant) features a matte-Sn finish compliant with JEDEC J-STD-020 moisture sensitivity level 1 and standard lead-free reflow profiles. Measured solder heat shift is typically <0.01%, and the device is qualified for single or double reflow - though second-side reflow should precede mounting to minimize cumulative thermal stress.
REF2030AIDDCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.5V, 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 12ppmp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.02V ~ 5.5V
- Current - Supply:
- 460µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
REF2030AIDDCT FAQ
1.How can I place an order for REF2030AIDDCT through Aetrix?
Please submit a Request for Quotation (RFQ) for REF2030AIDDCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for REF2030AIDDCT reliable?
The price and inventory of REF2030AIDDCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF2030AIDDCT is usually 5 days.
3.What payment methods are accepted for REF2030AIDDCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF2030AIDDCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF2030AIDDCT?
REF2030AIDDCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF2030AIDDCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for REF2030AIDDCT?
For technical support, including REF2030AIDDCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF2030AIDDCT requirements.
6.How does Aetrix verify that REF2030AIDDCT is sourced from the original manufacturer or authorized distributors?
All REF2030AIDDCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that REF2030AIDDCT meets industry standards.
7.What is the process for return or replacement of REF2030AIDDCT?
All REF2030AIDDCT units undergo pre-shipment inspection (PSI). If there is an issue with REF2030AIDDCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The REF2030AIDDCT part is unused and in its original packaging.
Return procedure for REF2030AIDDCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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