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Texas Instruments REF2030AIDDCR
- Part No.:
- REF2030AIDDCR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
REF2030AIDDCR.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,513
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Product details
Overview
REF2030AIDDCR from Texas Instruments is a dual-output, low-drift, low-power voltage reference IC delivering precise 3.0 V (VREF) and 1.5 V (VBIAS = VREF/2) outputs in a single SOT-23-5 package. It achieves ±0.05% initial accuracy, 8 ppm/°C max temperature drift over –40°C to 125°C, and 6 ppm/°C max VREF–VBIAS tracking over –40°C to 85°C - enabling high-precision biasing of bipolar ADC inputs in single-supply industrial measurement systems.
For engineers reviewing the REF2030AIDDCR datasheet, REF2030AIDDCR pinout, REF2030AIDDCR application, or REF2030AIDDCR equivalent, this device serves as a drop-in solution for precision analog signal chains requiring matched dual references with ultra-low dropout (10 mV), ±20 mA drive capability, and sub-430 µA quiescent current - critical for electricity meters, servo drives, and battery-powered instrumentation.
Technical Context
The REF2030AIDDCR integrates a band-gap core with two independent e-Trim™-calibrated output buffers: one delivers VREF (3.0 V), the other generates VBIAS (1.5 V) via precision resistor division (R1/R2 and R3/R4). Its architecture ensures both outputs share identical initial accuracy, drift, and long-term stability specifications.
Temperature compensation uses a curvature-corrected band-gap topology where ΔVBE across mismatched transistors is amplified and summed with a negative TC VBE, yielding near-zero net drift. VREF–VBIAS tracking is maintained by matched buffer design and post-mold e-Trim™ calibration, achieving ≤7 ppm/°C max mismatch over –40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VREF Output | 3.0 V ±0.05% - enables direct use as ADC reference without external scaling |
| VBIAS Output | 1.5 V ±0.05% - precisely half VREF for mid-rail biasing of bipolar analog signals |
| Temp Drift (VREF/VBIAS) | ≤8 ppm/°C (–40°C to 125°C) - ensures <±0.01% total error across full industrial range |
| VREF–VBIAS Tracking | ≤6 ppm/°C (–40°C to 85°C) - maintains <±0.005% relative error for differential signal conditioning |
| Dropout Voltage | 10 mV at 20 mA - supports operation from VIN ≥ 3.01 V, ideal for low-voltage battery systems |
| Quiescent Current | 360 µA typical - enables >1-year runtime on coin-cell batteries in portable test equipment |
| Output Drive | ±20 mA - eliminates need for external op-amp buffers in moderate-load applications |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), matte-Sn finish for corrosion resistance in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VBIAS | Output | 1.5 V reference output (VREF/2); sinks/sources ±20 mA with matched specs to VREF |
| 2 - GND | Reference | Analog ground return for both outputs; requires low-impedance PCB connection |
| 3 - EN | Input | Enable control: device active when EN ≥ VIN – 0.7 V; shutdown draws only 3.3–9 µA |
| 4 - VIN | Input | Supply input (3.02 V to 5.5 V); minimum VIN = VREF + 20 mV due to 10 mV dropout |
| 5 - VREF | Output | 3.0 V primary reference output; identical accuracy, drift, and noise performance to VBIAS |
Key Features
| Feature | Design Value |
|---|---|
| Dual matched outputs | VREF (3.0 V) and VBIAS (1.5 V) with ≤7 ppm/°C tracking - eliminates discrete resistor divider errors in ADC bias networks |
| e-Trim™ calibration | Post-mold trimming of both outputs for ±0.05% initial accuracy and 8 ppm/°C drift - avoids pre-calibration labor and improves yield |
| Ultra-low dropout | 10 mV at full 20 mA load - enables operation from 3.01 V supply, extending battery life in portable field instruments |
| High PSRR | ≥80 dB at 100 Hz (CL = 10 µF) - rejects power rail noise in noisy industrial environments without additional filtering |
| Low-frequency noise | 12 ppmPP (0.1–10 Hz) - preserves SNR in high-resolution 24-bit delta-sigma ADC applications |
Applications
| Electricity Meter | Analog Input Module |
|---|---|
Use Scenario: High-accuracy energy measurement using 24-bit sigma-delta ADCs with bipolar current/voltage sensing. IC Role / Device Role / Timing Role: Provides VREF (3.0 V) for ADC reference and VBIAS (1.5 V) to center bipolar shunt voltage signals at mid-rail. Use Value: Matched VREF–VBIAS tracking (≤6 ppm/°C) ensures consistent common-mode rejection across temperature, improving meter class accuracy compliance. |
Use Scenario: Industrial PLC analog input card acquiring ±10 V sensor signals with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Generates precision 3.0 V reference for ADC and 1.5 V bias for level-shifting bipolar inputs into unipolar ADC range. Use Value: ±20 mA drive capability directly interfaces with anti-aliasing filters and input buffers, reducing BOM count and layout area. |
| Servo Drive Control Module | Clinical Digital Thermometer |
Use Scenario: Closed-loop motor control using isolated current sensing and 12-bit ADC feedback. IC Role / Device Role / Timing Role: Supplies stable 3.0 V reference to ADC and 1.5 V bias for op-amp-based current-to-voltage conversion circuits. Use Value: 8 ppm/°C max drift ensures gain stability over motor housing temperature swings (–40°C to 125°C), maintaining torque accuracy. |
Use Scenario: Portable medical thermometer with thermistor bridge and low-noise instrumentation amplifier. IC Role / Device Role / Timing Role: Delivers ultra-stable 3.0 V reference for ADC and 1.5 V bias for bridge excitation and signal conditioning. Use Value: 12 ppmPP low-frequency noise minimizes temperature resolution error (<0.01°C) in clinical-grade measurements. |
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 |
|---|---|---|---|
| REF2030AIDBVR | SOT-23-5 package with standard Sn finish (not matte-Sn); identical electrical specs | Lacks enhanced corrosion resistance for Class III harsh environments (e.g., utility substations) | Select REF2030AIDBVR for cost-sensitive, non-corrosive indoor applications where matte-Sn is unnecessary |
| ADR4530BRZ | Single-output 3.0 V reference (no VBIAS); 3 ppm/°C max drift; SOIC-8 package | Requires external resistor divider + buffer to generate 1.5 V, increasing board space and matching error | Choose ADR4530BRZ only when ultra-low drift (3 ppm/°C) outweighs need for integrated VBIAS and space constraints |
Compared with REF2030AIDDCR, REF2030AIDBVR offers identical performance at lower cost but reduced environmental robustness, while ADR4530BRZ provides superior drift spec but forces external circuitry to replicate VBIAS functionality - increasing design complexity and potential error sources.
Availability
REF2030AIDDCR is available at Aetrix Electronics and suitable for electricity metering, servo drive control, and clinical instrumentation requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for REF2030AIDDCR 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, matched references in ultra-small packages - targeting electricity meters, programmable logic controllers, and portable test equipment.
FAQ
What is the maximum operating temperature range for the REF2030AIDDCR?
The REF2030AIDDCR operates across –40°C to +125°C ambient temperature. Its VREF and VBIAS outputs maintain ≤8 ppm/°C temperature drift and ≤7 ppm/°C tracking over this full range, making it suitable for under-hood automotive subsystems and industrial motor drives where thermal extremes occur. The SOT-23-5 package's thermal resistance (RθJA = 193.6°C/W) requires appropriate PCB copper pour for sustained 125°C operation.
How does the enable (EN) pin function on the REF2030AIDDCR?
The EN pin on the REF2030AIDDCR controls device activation: when EN ≥ VIN – 0.7 V, the device enters active mode drawing 360–430 µA; when EN < VIN – 0.7 V, it enters shutdown mode drawing only 3.3–9 µA. This feature allows dynamic power gating in battery-operated devices like handheld multimeters, extending operational life without external MOSFET switches.
Can the REF2030AIDDCR drive a 10 µF output capacitor?
Yes, the REF2030AIDDCR is stable with output capacitors from 0 µF to 10 µF, as confirmed in Section 7.5 of its datasheet. Using 10 µF improves PSRR above 100 Hz and reduces load transient overshoot, which is beneficial in servo drive feedback loops where rapid current changes induce supply noise. No series resistance is required for stability.
What is the significance of the matte-Sn finish on the REF2030AIDDCR package?
The matte-Sn finish on the REF2030AIDDCR (denoted by "DDCR" suffix) provides enhanced corrosion resistance per Battelle Class III standards, making it suitable for harsh environments such as utility substations, marine electronics, and chemical processing plants. This differs from standard Sn-finished variants (e.g., REF2030AIDBVR) which lack this protective layer and may degrade faster in high-humidity, sulfur-rich atmospheres.
Does the REF2030AIDDCR require external components for basic operation?
No, the REF2030AIDDCR operates with zero external components for standard use: VIN connects to a 3.02–5.5 V supply, EN is tied to VIN for always-on operation, and VREF/VBIAS connect directly to load. Only optional components - such as 10 µF output capacitors for improved PSRR or pull-down resistors on EN for controlled startup - are recommended for specific system requirements.
REF2030AIDDCR 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
REF2030AIDDCR FAQ
1.How can I place an order for REF2030AIDDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for REF2030AIDDCR 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 REF2030AIDDCR reliable?
The price and inventory of REF2030AIDDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF2030AIDDCR is usually 5 days.
3.What payment methods are accepted for REF2030AIDDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF2030AIDDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF2030AIDDCR?
REF2030AIDDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF2030AIDDCR 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 REF2030AIDDCR?
For technical support, including REF2030AIDDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF2030AIDDCR requirements.
6.How does Aetrix verify that REF2030AIDDCR is sourced from the original manufacturer or authorized distributors?
All REF2030AIDDCR 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 REF2030AIDDCR meets industry standards.
7.What is the process for return or replacement of REF2030AIDDCR?
All REF2030AIDDCR units undergo pre-shipment inspection (PSI). If there is an issue with REF2030AIDDCR, 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 REF2030AIDDCR part is unused and in its original packaging.
Return procedure for REF2030AIDDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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