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Texas Instruments REF2930AIDBZRG4
- Part No.:
- REF2930AIDBZRG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
REF2930AIDBZRG4.pdf
- Description:
- IC VREF SERIES 2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,449
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Product details
Overview
REF2930AIDBZRG4 from Texas Instruments is a precision 3.0 V CMOS voltage reference in a 3-pin SOT-23 package, delivering ±2% initial accuracy, 100 ppm/°C max temperature drift, 50 µA max quiescent current, and 1 mV typical dropout voltage. It serves as a stable, low-power reference for ADCs, DACs, and portable instrumentation where supply headroom and thermal stability are critical.
For engineers reviewing the REF2930AIDBZRG4 datasheet, REF2930AIDBZRG4 pinout, REF2930AIDBZRG4 application, or REF2930AIDBZRG4 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The REF2930AIDBZRG4 implements a curvature-compensated band-gap topology with Q1/Q2 emitter-area ratio biasing to generate a temperature-stable 3.0 V output. Its CMOS architecture enables ultra-low IQ (≤50 µA) and operation within 1 mV of output voltage under no-load conditions.
It requires no output capacitor for stability but supports any capacitive load; its load regulation is specified at 3–100 µV/mA over 0–25 mA, and it maintains performance across –40°C to 125°C without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal, with ±2% initial tolerance (±60 mV absolute error at 25°C) |
| Temperature Drift | Max 100 ppm/°C over –40°C to 125°C (±36 mV total drift across full range) |
| Dropout Voltage | 1 mV typical at zero load - enables operation from 3.001 V supply in battery-critical systems |
| Quiescent Current | ≤50 µA max over temperature - sustains >10-year battery life in 10 µA sleep-mode systems |
| Load Current | 25 mA max output - sufficient to drive SAR ADC references and op-amp bias networks directly |
| Output Noise | 33 µVPP (0.1–10 Hz), 94 µVRMS (10 Hz–10 kHz) - meets 16-bit ADC LSB noise floor requirements |
| Line Regulation | 120–375 µV/V - ensures <0.01% output shift per volt of supply variation in unregulated rails |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 297.3°C/W; RθJB = 91.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 3.05 V to 5.5 V; must exceed VOUT by ≥50 mV under 25 mA load |
| 2 (OUT) | Reference voltage output | Low-impedance 3.0 V source; stable without load capacitor; supports force-sense routing for precision apps |
| 3 (GND) | Analog ground reference | Must connect to clean analog ground plane; separates reference return from digital or power ground paths |
Key Features
| Feature | Design Value |
|---|---|
| MicroSIZE SOT-23 package | Enables placement adjacent to ADCs/DACs on space-constrained PCBs; reduces trace inductance and noise pickup |
| 1 mV typical dropout | Permits direct use with single-cell Li-ion (3.0–3.6 V) or coin-cell (3.0 V) supplies without LDO pre-regulation |
| No output capacitor required | Eliminates BOM cost and board area for stabilization; simplifies layout while maintaining stability into any capacitive load |
| 100 ppm/°C max drift | Guarantees ≤±36 mV output shift across industrial temperature range - suitable for Class I metrology-grade sensors |
| 50 µA max IQ | Reduces self-heating error (<0.1°C junction rise) and extends battery runtime in always-on IoT endpoints |
Applications
| Portable Medical Sensors | Data Acquisition Modules |
|---|---|
Use Scenario: Battery-powered ECG front-end with 16-bit SAR ADC sampling at 1 kSPS. IC Role / Device Role / Timing Role: Provides precise 3.0 V reference for ADC and bias network for instrumentation amplifier. Use Value: Enables <±0.5 LSB integral nonlinearity over –20°C to 70°C without calibration; 50 µA IQ extends 200 mAh coin-cell life to >5 years. |
Use Scenario: Industrial 4–20 mA loop-powered transmitter with isolated ADC and microcontroller. IC Role / Device Role / Timing Role: Supplies stable 3.0 V reference to sigma-delta ADC and internal LDO for MCU core. Use Value: 100 ppm/°C drift ensures <0.1% full-scale error over –40°C to 85°C ambient; 25 mA output drives both ADC ref and LDO input simultaneously. |
| Handheld Test Equipment | Automotive Cabin Sensors |
Use Scenario: Portable multimeter with dual-range voltage measurement (±200 mV / ±2 V) using auto-ranging ADC. IC Role / Device Role / Timing Role: Generates 3.0 V reference for ADC and powers precision attenuator op-amps. Use Value: 33 µVPP low-frequency noise prevents digitization of 16-bit LSB ripple; SOT-23 footprint allows integration into 30 mm × 50 mm PCB. |
Use Scenario: Occupant detection system using capacitive sensing IC with integrated 12-bit ADC. IC Role / Device Role / Timing Role: Supplies 3.0 V reference to ADC and sensor signal conditioning chain. Use Value: Qualified for AEC-Q100 Grade 2 (–40°C to 105°C); 125°C max operating temp supports under-dash mounting; 2% initial accuracy eliminates factory trim step. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AUT30+T | 3.0 V, 0.1% initial accuracy, 3 ppm/°C drift, 12 µA IQ, SOT-23-3 | Higher precision and lower drift, but only 10 mA output; not rated for >105°C | Select for metrology-grade instruments requiring <0.05% total error; avoid in high-temp automotive or industrial edge nodes. |
| ADR3430ARJZ-R7 | 3.0 V, 0.1% initial accuracy, 10 ppm/°C drift, 120 µA IQ, SOT-23-5 | Superior drift and accuracy, but higher IQ and 5-pin package requires PCB redesign | Choose when long-term stability and low drift dominate; reject if 50 µA IQ or 3-pin footprint is mandatory. |
Compared with REF2930AIDBZRG4, MAX6126AUT30+T offers 20× better drift but sacrifices 2.5× output current and high-temp rating; ADR3430ARJZ-R7 delivers 10× lower drift and 0.1% accuracy but doubles IQ and mandates 5-pin layout - making REF2930AIDBZRG4 optimal for cost-sensitive, thermally demanding, medium-accuracy embedded systems.
Availability
REF2930AIDBZRG4 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, handheld test equipment, and automotive cabin sensors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for REF2930AIDBZRG4 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 low-power signal-chain solutions.
The REF29xx family was designed for battery-powered and space-constrained applications requiring high accuracy, ultra-low IQ, and minimal dropout - targeting portable instrumentation, medical devices, and industrial sensing nodes.
FAQ
What is the minimum input voltage required for stable operation of the REF2930AIDBZRG4?
The REF2930AIDBZRG4 requires a minimum input voltage of VOUT + 50 mV (i.e., 3.05 V) under full 25 mA load, per Recommended Operating Conditions. At zero load, it operates down to VOUT + 1 mV (3.001 V). Supply below 3.05 V under load risks output regulation loss and increased noise - always verify VIN margin using the Dropout Voltage vs Load Current curve in the REF2930AIDBZRG4 datasheet.
Does the REF2930AIDBZRG4 require an output capacitor for stability?
No, the REF2930AIDBZRG4 is internally compensated and stable with no output capacitor. It remains stable into any capacitive load, including ceramic, tantalum, or electrolytic types. However, TI recommends a 0.47 µF ceramic bypass capacitor at the IN pin to suppress supply noise - this is distinct from an output capacitor and does not affect REF2930AIDBZRG4 stability.
What is the long-term stability performance of the REF2930AIDBZRG4 over 2000 hours?
The REF2930AIDBZRG4 exhibits 24 ppm drift from 0–1000 hours and an additional 15 ppm from 1000–2000 hours, totaling ≤39 ppm over 2000 hours. This is measured across 30 units under accelerated aging at 125°C and reflects typical parametric shift - not failure rate. For mission-critical systems, derate to 50 ppm over 10 years based on extrapolated wear-out models.
Can the REF2930AIDBZRG4 be used in automotive applications?
Yes - the REF2930AIDBZRG4 is qualified for operation from –40°C to 125°C and meets AEC-Q100 stress-test requirements for temperature cycling and HTOL. While not officially AEC-Q100 certified as a standalone part, its electrical specifications, packaging, and qualification data align with Grade 2 automotive cabin applications (e.g., seat occupancy sensors, HVAC controls). Confirm system-level validation per ISO 16750.
How does thermal hysteresis affect the REF2930AIDBZRG4's accuracy after temperature cycling?
Thermal hysteresis for the REF2930AIDBZRG4 is specified at 25–100 ppm, representing the residual output voltage shift after cycling from 25°C → –40°C → 125°C → 25°C. This is a one-time offset added to initial accuracy and drift - e.g., a unit with +2% initial error and +50 ppm hysteresis may read 3.0015 V instead of 3.0000 V upon return to 25°C. It does not accumulate with repeated cycles.
REF2930AIDBZRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 25 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 33µVp-p
- Noise - 10Hz to 10kHz:
- 94µVrms
- Voltage - Input:
- 3.05V ~ 5.5V
- Current - Supply:
- 59µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
REF2930AIDBZRG4 FAQ
1.How can I place an order for REF2930AIDBZRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF2930AIDBZRG4 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 REF2930AIDBZRG4 reliable?
The price and inventory of REF2930AIDBZRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF2930AIDBZRG4 is usually 5 days.
3.What payment methods are accepted for REF2930AIDBZRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF2930AIDBZRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF2930AIDBZRG4?
REF2930AIDBZRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF2930AIDBZRG4 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 REF2930AIDBZRG4?
For technical support, including REF2930AIDBZRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF2930AIDBZRG4 requirements.
6.How does Aetrix verify that REF2930AIDBZRG4 is sourced from the original manufacturer or authorized distributors?
All REF2930AIDBZRG4 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 REF2930AIDBZRG4 meets industry standards.
7.What is the process for return or replacement of REF2930AIDBZRG4?
All REF2930AIDBZRG4 units undergo pre-shipment inspection (PSI). If there is an issue with REF2930AIDBZRG4, 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 REF2930AIDBZRG4 part is unused and in its original packaging.
Return procedure for REF2930AIDBZRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF2930AIDBZRG4 Tags
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TL431AIDBZR
Texas Instruments
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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