My Inquiry
My Account
Texas Instruments REF3430MDBVTEP
- Part No.:
- REF3430MDBVTEP
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
REF3430MDBVTEP.pdf
- Description:
- IC VREF SERIESV 0.05% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:396
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
REF3430MDBVTEP from Texas Instruments is a precision 3.0 V CMOS voltage reference IC with ±0.05% initial accuracy, 10 ppm/°C max temperature coefficient, and ±10 mA output drive capability-designed for high-resolution data acquisition in defense-grade instrumentation and industrial PLC analog I/O modules.
For engineers reviewing the REF3430MDBVTEP datasheet, REF3430MDBVTEP pinout, REF3430MDBVTEP application, or REF3430MDBVTEP equivalent, this page delivers verified electrical specs, force/sense Kelvin architecture details, low-noise (3.8 µVPP/V, 0.1–10 Hz) performance, and EP-grade reliability across –55°C to +125°C.
Technical Context
The REF3430MDBVTEP implements a bandgap core with buffered dual-output force/sense architecture-enabling 4-wire Kelvin connections to eliminate PCB trace IR drop errors. Its enable-controlled shutdown mode reduces quiescent current to ≤2.5 µA while maintaining high-impedance outputs.
It operates with ultra-low dropout (50 mV typ. at 0 mA, 500 mV max at 10 mA, –55°C to +125°C) and wide input range (up to 12 V), supporting stable regulation even under marginal supply conditions in battery-backed or field-transmitter systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.05% - enables direct interface with 16-bit+ SAR and delta-sigma ADCs (e.g., ADS1287) without calibration. |
| Tempco | ≤10 ppm/°C - ensures ≤±0.3 mV drift over –55°C to +125°C, critical for unattended field transmitters. |
| Noise (0.1–10 Hz) | 3.8 µVPP/V - supports <19-bit ENOB in precision metrology when paired with low-noise amplifiers. |
| Quiescent Current | ≤95 µA active / ≤2.5 µA shutdown - extends battery life in portable test equipment and remote sensors. |
| Load Drive | ±10 mA - sustains full accuracy while driving ADC reference inputs, DAC buffers, and multiplexed sensor excitation circuits. |
| Dropout Voltage | 50 mV (0 mA, 25°C); 500 mV (10 mA, –55°C to +125°C) - allows operation from low-headroom supplies like 3.3 V LDOs or aging batteries. |
| Long-Term Stability | 25 ppm/1000 hrs - reduces recalibration frequency in medical and aerospace monitoring systems. |
Pinout & Package
REF3430MDBVTEP is housed in a space-constrained 6-pin SOT-23 (DBV) package (2.90 mm × 1.60 mm), optimized for high-density PCB layouts in military and medical electronics where thermal and mechanical robustness are required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND_F | Force ground | Low-impedance return path for output current; connects directly to power ground plane to minimize noise coupling. |
| 2 - GND_S | Sense ground | High-impedance Kelvin sense node; ties to ADC/DAC ground reference point to reject trace resistance error. |
| 3 - ENABLE | Digital control input | Active-high logic: ≥1.6 V enables regulation; ≤0.5 V disables output and cuts IQ to ≤2.5 µA. |
| 4 - IN | Supply input | Accepts 3.05 V to 12 V; internal LDO-like regulation ensures stable 3.0 V output despite input ripple or sag. |
| 5 - OUT_S | Sense output | High-Z feedback node; connects to load's reference input to close regulation loop without trace IR loss. |
| 6 - OUT_F | Force output | Current-driven output terminal; delivers ±10 mA while OUT_S monitors true load voltage. |
Key Features
| Feature | Design Value |
|---|---|
| 4-wire Kelvin architecture | Eliminates up to 1 mV error from 100 mΩ PCB trace resistance at 10 mA load-critical for <0.01% system accuracy. |
| Ultra-low 1/f noise | 3.8 µVPP/V (0.1–10 Hz) enables sub-µV offset stability in weigh scales and strain-gauge bridges. |
| Extended temperature range | Specified from –55°C to +125°C with controlled baseline and single-fab traceability-meets MIL-PRF-38535 Class K requirements. |
| Enable-controlled shutdown | Reduces system standby power by >97% versus always-on references-essential for energy-harvesting field devices. |
| Low long-term drift | 25 ppm/1000 hrs supports 10-year calibration intervals in deployed infrastructure monitoring systems. |
Applications
| PLC Analog Input Modules | Precision Field Transmitters |
|---|---|
|
Use Scenario: 16-channel 24-bit isolated analog input module in hazardous-area process control cabinet. IC Role / Device Role / Timing Role: Primary 3.0 V reference for simultaneous sampling ADCs (e.g., ADS8588S), providing stable excitation for RTD/thermocouple signal conditioning. Use Value: 10 ppm/°C tempco and 3.8 µVPP noise ensure <±0.005% total measurement uncertainty across ambient swings from –40°C to +70°C. |
Use Scenario: Loop-powered 4–20 mA pressure transmitter with HART digital overlay in oil & gas wellhead. IC Role / Device Role / Timing Role: Precision voltage reference for sigma-delta ADC (ADS1287) measuring bridge output, enabling <0.1% FS accuracy over 15-year service life. Use Value: 25 ppm/1000 hrs long-term stability and –55°C to +125°C operation eliminate field recalibration and support extended deployment in desert/arctic environments. |
| Defense-Avionics Data Acquisition | Medical Blood Glucose Meters |
|
Use Scenario: Ruggedized flight-test recorder capturing inertial sensor data across –55°C to +85°C operational envelope. IC Role / Device Role / Timing Role: Low-noise 3.0 V reference for dual-supply op-amps and 20-bit ADCs in radiation-tolerant signal chain. Use Value: Dual force/sense outputs maintain <0.05% absolute accuracy despite vibration-induced trace flexing; EP-grade traceability satisfies DO-254 compliance. |
Use Scenario: Portable, battery-operated glucose meter requiring FDA 510(k) clearance with 10-year shelf life. IC Role / Device Role / Timing Role: Stable 3.0 V reference for electrochemical sensor front-end ADC (ADS1112), enabling consistent enzyme reaction voltage interpretation. Use Value: 95 µA max IQ extends single-CR2032 battery life to >2000 tests; 0.05% initial accuracy meets ISO 15197:2013 clinical accuracy thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3430ARJZ-REEL7 | Same 3.0 V output, but higher 20 ppm/°C max tempco and 12 µVPP noise (0.1–10 Hz); no enable pin. | Lacks shutdown mode and Kelvin sensing-suitable only for fixed-power, non-Kelvin PCB layouts. | Select ADR3430 if cost sensitivity outweighs noise/tempco requirements and enable control is unnecessary. |
| MAX6070AESA+ | 3.0 V output, 15 ppm/°C tempco, 8 µVPP noise; includes enable but no force/sense pins-3-terminal architecture. | Cannot compensate for PCB trace resistance; limited to ≤16-bit accuracy in high-precision systems. | Choose MAX6070AESA+ only for legacy designs already using 3-terminal references and where layout cannot accommodate 6-pin routing. |
Compared with ADR3430ARJZ-REEL7 and MAX6070AESA+, REF3430MDBVTEP uniquely delivers 4-wire Kelvin operation, 3.8 µVPP noise, and 10 ppm/°C tempco in a single EP-qualified package-making it the sole option for new designs targeting >18-bit system accuracy in harsh environments.
Availability
REF3430MDBVTEP is available at Aetrix Electronics and suitable for precision data acquisition systems, PLC analog I/O modules, and field transmitters requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for REF3430MDBVTEP 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 focused on analog and embedded processing technologies, with deep expertise in precision analog design and space-grade component qualification.
REF3430MDBVTEP belongs to TI's REF34xx-EP series-engineered specifically for defense, aerospace, and medical applications demanding extended temperature operation, controlled manufacturing baselines, and long-term parametric stability.
FAQ
What is the maximum input voltage for REF3430MDBVTEP?
The REF3430MDBVTEP supports an input voltage range of VREF + VDO (minimum) up to 12 V. At 25°C and zero load, dropout is 50 mV, so minimum input is 3.05 V; absolute maximum input is 13 V per absolute ratings. Operation above 12 V risks permanent damage.
Does REF3430MDBVTEP support 4-wire Kelvin connections?
Yes-REF3430MDBVTEP features dedicated force (OUT_F, GND_F) and sense (OUT_S, GND_S) terminals. This architecture allows separation of high-current paths from precision voltage sensing, eliminating IR drop errors in long-trace or high-current applications.
What is the typical 0.1 Hz to 10 Hz noise performance of REF3430MDBVTEP?
The REF3430MDBVTEP delivers 3.8 µVPP (peak-to-peak) output voltage noise over 0.1 Hz to 10 Hz-verified per TI SBAS942B datasheet. This low 1/f noise enables high-resolution measurements in slow-sampling applications like precision weighing and environmental monitoring.
How does the ENABLE pin function on REF3430MDBVTEP?
The ENABLE pin on REF3430MDBVTEP controls device state: ≥1.6 V places it in active mode (95 µA max IQ); ≤0.5 V forces shutdown mode (≤2.5 µA IQ) with high-impedance outputs. The pin must not exceed VIN voltage and has ≤2 µA leakage across temperature.
Is REF3430MDBVTEP qualified for extended temperature operation?
Yes-REF3430MDBVTEP is specified for continuous operation from –55°C to +125°C, with full electrical characterization across that range. It also meets EP-grade requirements: controlled baseline, single fab/assembly/test site, extended product life cycle, and full traceability.
REF3430MDBVTEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 5µVp-p
- Noise - 10Hz to 10kHz:
- 24µVrms
- Voltage - Input:
- 3.05V ~ 13V
- Current - Supply:
- 95µA
- Current - Cathode:
- -
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
REF3430MDBVTEP FAQ
1.How can I place an order for REF3430MDBVTEP through Aetrix?
Please submit a Request for Quotation (RFQ) for REF3430MDBVTEP 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 REF3430MDBVTEP reliable?
The price and inventory of REF3430MDBVTEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF3430MDBVTEP is usually 5 days.
3.What payment methods are accepted for REF3430MDBVTEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF3430MDBVTEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF3430MDBVTEP?
REF3430MDBVTEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF3430MDBVTEP 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 REF3430MDBVTEP?
For technical support, including REF3430MDBVTEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF3430MDBVTEP requirements.
6.How does Aetrix verify that REF3430MDBVTEP is sourced from the original manufacturer or authorized distributors?
All REF3430MDBVTEP 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 REF3430MDBVTEP meets industry standards.
7.What is the process for return or replacement of REF3430MDBVTEP?
All REF3430MDBVTEP units undergo pre-shipment inspection (PSI). If there is an issue with REF3430MDBVTEP, 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 REF3430MDBVTEP part is unused and in its original packaging.
Return procedure for REF3430MDBVTEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF3430MDBVTEP Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
