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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Texas Instruments REF4132A30DBVR

Name: REF4132A30DBVR
Brand: Texas Instruments
SKU: REF4132A30DBVR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: REF4132A30DBVR

Manufacturer:: Texas Instruments

Category:: Voltage Reference

Package:: SC-74A, SOT-753

Datasheet:: REF4132A30DBVR.pdf

Description:: IC VREF SERIES 0.05% SOT23-5

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Product details

Overview

REF4132A30DBVR from Texas Instruments is a precision 3.0 V series voltage reference IC with ±0.05% initial accuracy, 12 ppm/°C max temperature coefficient (A grade), 100 µA max quiescent current, ±10 mA output drive capability, and 15 µV_PP (0.1–10 Hz) low-frequency noise-designed for high-resolution data acquisition systems requiring stable excitation in PLC analog I/O modules.

For engineers reviewing the REF4132A30DBVR datasheet, REF4132A30DBVR pinout, REF4132A30DBVR application, or REF4132A30DBVR equivalent, key selection criteria include dropout voltage at 10 mA load, thermal hysteresis (35 ppm), long-term stability (30 ppm/1000 hrs), enable pin logic thresholds, and SOT-23-5 package compatibility with LM4132/LM4128 layouts.

Technical Context

The REF4132A30DBVR implements a CMOS bandgap core with integrated output buffer and enable-controlled shutdown mode. Its architecture delivers 50 mV typical dropout at zero load and 500 mV max at ±10 mA, supporting operation from V_IN = V_REF + V_DO up to 5.5 V across −40°C to +125°C.

It features a dedicated EN pin with 1.6 V min logic-high threshold and 0.5 V max logic-low threshold, enabling low-power sleep states with 2.5 µA max shutdown current. Output stability is enhanced by low hysteresis (35 ppm) and 30 ppm/1000 hrs long-term drift, verified under 35°C bias conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.0 V nominal, ±0.05% initial accuracy ensures ≤±1.5 mV absolute error at 25°C for calibration-critical circuits.
Tempco (A grade)	12 ppm/°C max over −40°C to +125°C-limits drift to ≤1.08 mV across full range, critical for field transmitters.
Quiescent Current	100 µA max active mode; enables battery-powered DAQ systems with multi-year runtime on coin cells.
Output Drive	±10 mA sourcing/sinking-supports direct driving of ADC reference inputs and op-amp bias networks without external buffers.
Noise (0.1–10 Hz)	15 µV_PP/V-translates to 45 µV_PP at 3.0 V output, preserving ENOB in 24-bit delta-sigma converters like ADS1287.
Dropout Voltage	100 mV max at 0 mA; 500 mV max at ±10 mA-allows operation from 3.5 V supply in 3.3 V systems with margin.
Long-Term Stability	30 ppm/1000 hrs at 35°C-predicts <0.003% output shift over first 40 days, reducing recalibration frequency in test equipment.

Pinout & Package

SOT-23-5 package (2.90 mm × 1.60 mm body), moisture sensitivity level 1, rated for −40°C to +125°C operation.

Pin/Terminal	Circuit Role	Design Meaning
1 (N/C)	No-connect	Internally unconnected; must remain floating-no routing or soldering permitted.
2 (GND)	Ground reference	Primary return path for internal bandgap and output buffer; requires low-impedance connection to solid ground plane.
3 (EN)	Enable control input	Active-high digital control: ≥1.6 V enables regulation; ≤0.5 V disables output and reduces IQ to ≤2.5 µA.
4 (VIN)	Input power supply	Accepts 3.05 V to 5.5 V; must be bypassed with 0.1 µF ceramic capacitor placed within 2 mm of pin.
5 (VREF)	Precision output	3.0 V regulated source; requires 0.1 µF ceramic capacitor directly at pin for stability; supports 1–10 µF bulk capacitance.

Key Features

Feature	Design Value
Low-drift A-grade tempco	12 ppm/°C max enables <1 mV total drift over industrial temperature range-critical for motor drive feedback loops.
Enable-controlled shutdown	Reduces supply current to ≤2.5 µA, allowing microcontroller-gated power cycling in portable LCR meters.
Low 1/f noise	15 µV_PP (0.1–10 Hz) minimizes quantization uncertainty in high-resolution weigh-scale applications using 24-bit ADCs.
Pin-to-pin replacement	Direct drop-in for LM4132 and LM4128 in existing SOT-23-5 layouts-no PCB revision required for upgrade.
High output current	±10 mA drive eliminates need for external buffers when powering dual-opamp references (e.g., OPA735) in split-rail designs.

Applications

PLC Analog I/O Module	Data Acquisition System
Use Scenario: 16-channel isolated analog input card acquiring 4–20 mA sensor signals in hazardous area control cabinets. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for simultaneous sampling ADCs (e.g., ADS8588S) and programmable gain instrumentation amplifiers. Use Value: 12 ppm/°C tempco and 30 ppm/1000 hrs stability maintain <0.01% measurement accuracy over 5-year field deployment without recalibration.	Use Scenario: Portable battery-powered handheld DAQ unit performing spectral analysis on vibration sensors. IC Role / Device Role / Timing Role: Supplies low-noise 3.0 V reference to 24-bit delta-sigma ADC (ADS1287) while operating from single Li-ion cell via buck-boost regulator. Use Value: 100 µA max quiescent current extends battery life to >12 months; 15 µV_PP noise preserves dynamic range for sub-millig acceleration resolution.
Field Transmitter	Battery Test Equipment
Use Scenario: Loop-powered 2-wire pressure transmitter with HART communication, operating at ambient temperatures from −40°C to +85°C. IC Role / Device Role / Timing Role: Generates precise 3.0 V reference for DAC-based current loop control and sensor signal conditioning circuitry. Use Value: −40°C to +125°C rating and 35 ppm hysteresis ensure repeatable 0.1% FS accuracy after thermal cycling in outdoor enclosures.	Use Scenario: Automated electrochemical impedance spectroscopy (EIS) tester evaluating lithium battery health during production. IC Role / Device Role / Timing Role: Delivers ultra-stable 3.0 V excitation voltage to precision current sources and differential ADC front-ends. Use Value: ±0.05% initial accuracy and low 1/f noise enable <1 mΩ impedance resolution at 10 mHz–100 kHz sweep frequencies.

PLC Analog I/O Module

Data Acquisition System

Use Scenario: 16-channel isolated analog input card acquiring 4–20 mA sensor signals in hazardous area control cabinets.

IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for simultaneous sampling ADCs (e.g., ADS8588S) and programmable gain instrumentation amplifiers.

Use Value: 12 ppm/°C tempco and 30 ppm/1000 hrs stability maintain <0.01% measurement accuracy over 5-year field deployment without recalibration.

Use Scenario: Portable battery-powered handheld DAQ unit performing spectral analysis on vibration sensors.

IC Role / Device Role / Timing Role: Supplies low-noise 3.0 V reference to 24-bit delta-sigma ADC (ADS1287) while operating from single Li-ion cell via buck-boost regulator.

Use Value: 100 µA max quiescent current extends battery life to >12 months; 15 µV_PP noise preserves dynamic range for sub-millig acceleration resolution.

Field Transmitter

Battery Test Equipment

Use Scenario: Loop-powered 2-wire pressure transmitter with HART communication, operating at ambient temperatures from −40°C to +85°C.

IC Role / Device Role / Timing Role: Generates precise 3.0 V reference for DAC-based current loop control and sensor signal conditioning circuitry.

Use Value: −40°C to +125°C rating and 35 ppm hysteresis ensure repeatable 0.1% FS accuracy after thermal cycling in outdoor enclosures.

Use Scenario: Automated electrochemical impedance spectroscopy (EIS) tester evaluating lithium battery health during production.

IC Role / Device Role / Timing Role: Delivers ultra-stable 3.0 V excitation voltage to precision current sources and differential ADC front-ends.

Use Value: ±0.05% initial accuracy and low 1/f noise enable <1 mΩ impedance resolution at 10 mHz–100 kHz sweep frequencies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
REF4132B30DBVR	30 ppm/°C max tempco (B grade) vs. 12 ppm/°C (A grade); same 3.0 V output, ±0.05% accuracy, and SOT-23-5 package.	Lower cost for non-critical industrial applications where <2 mV total drift over temperature is acceptable.	Select REF4132B30DBVR only if system-level calibration compensates for higher drift; avoid in field transmitters or metrology-grade DAQ.
LM4132AMF-3.0/NOPB	Same 3.0 V output and SOT-23-5 package, but 20 ppm/°C max tempco, 150 µA max IQ, and no enable pin-requires external ON/OFF control.	Lacks shutdown mode; suitable for always-on fixed-supply systems where 50 µA higher quiescent current is tolerable.	Choose LM4132AMF-3.0/NOPB only when enable functionality is unnecessary and board space allows discrete MOSFET switching.

Compared with REF4132B30DBVR and LM4132AMF-3.0/NOPB, REF4132A30DBVR uniquely combines A-grade drift performance, integrated enable control, and lowest quiescent current-making it optimal for portable, high-accuracy, thermally demanding applications where power gating and long-term stability are mandatory.

Availability

REF4132A30DBVR is available at Aetrix Electronics and suitable for PLC analog I/O modules, field transmitters, and battery test equipment requiring stable component supply with guaranteed long-term availability and traceable lot documentation.

Supply support for REF4132A30DBVR 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs since 1930.

The REF4132 product line delivers low-drift, low-power series voltage references optimized for high-resolution data conversion systems in industrial automation, test & measurement, and portable instrumentation.

FAQ

What is the maximum dropout voltage of the REF4132A30DBVR at full load?

The REF4132A30DBVR has a maximum dropout voltage of 500 mV at ±10 mA load current, meaning it requires a minimum input voltage of 3.5 V to maintain regulation at its full 3.0 V output. This specification is validated across −40°C to +125°C and enables reliable operation in 3.3 V rail systems with adequate headroom. The REF4132A30DBVR datasheet specifies this value under recommended operating conditions with C_IN = 0.1 µF and C_REF = 10 µF.

Does the REF4132A30DBVR support shutdown mode, and what is its quiescent current in that state?

Yes, the REF4132A30DBVR supports hardware-enabled shutdown mode via its EN pin: pulling EN ≤0.5 V disables regulation and reduces quiescent current to ≤2.5 µA max. This feature is essential for power-gated systems like handheld DAQ units. The REF4132A30DBVR maintains this low current across −40°C to +125°C, with typical shutdown current of 1.5 µA at 25°C per the electrical characteristics table.

What is the long-term stability specification for the REF4132A30DBVR, and how is it measured?

The REF4132A30DBVR exhibits 30 ppm maximum long-term stability over 1000 hours at 35°C, measured by tracking output voltage drift across 32 units under constant bias. This metric reflects typical aging behavior-not a guaranteed limit-and applies specifically to the A-grade variant. The REF4132A30DBVR datasheet notes that burn-in may reduce early-life drift, and system designers should account for this parameter in calibration intervals for metrology-grade instruments.

Can the REF4132A30DBVR drive capacitive loads, and what is the recommended output capacitor range?

Yes, the REF4132A30DBVR is stable with output capacitors from 0.1 µF to 10 µF, as specified in the electrical characteristics table. TI recommends using low-ESR ceramic types (X5R/X7R) directly at the VREF pin for optimal noise filtering and transient response. Adding bulk capacitance beyond 10 µF increases turn-on time and is not characterized; the REF4132A30DBVR's stability is guaranteed only within the 0.1–10 µF range with proper PCB layout per Section 12.

Is the REF4132A30DBVR pin-compatible with legacy voltage references, and which ones?

Yes, the REF4132A30DBVR is pin-to-pin compatible with LM4132 and LM4128 in the SOT-23-5 package, sharing identical pin 1 (N/C), pin 2 (GND), pin 3 (EN), pin 4 (VIN), and pin 5 (VREF) assignments. This allows direct replacement without PCB modification. The REF4132A30DBVR improves upon these predecessors with lower tempco, lower noise, and integrated enable functionality-verified in TI's device comparison table and simplified schematic.

REF4132A30DBVR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: SC-74A, SOT-753

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:: 12ppm/°C

Noise - 0.1Hz to 10Hz:: 15ppmp-p

Noise - 10Hz to 10kHz:: 24µVrms

Voltage - Input:: 3.5V ~ 5.5V

Current - Supply:: 100µA

Current - Cathode:: -

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

REF4132A30DBVR FAQ

1.How can I place an order for REF4132A30DBVR through Aetrix?

Please submit a Request for Quotation (RFQ) for REF4132A30DBVR 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 REF4132A30DBVR reliable?

The price and inventory of REF4132A30DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF4132A30DBVR is usually 5 days.

3.What payment methods are accepted for REF4132A30DBVR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF4132A30DBVR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for REF4132A30DBVR?

REF4132A30DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your REF4132A30DBVR 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 REF4132A30DBVR?

For technical support, including REF4132A30DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF4132A30DBVR requirements.

6.How does Aetrix verify that REF4132A30DBVR is sourced from the original manufacturer or authorized distributors?

All REF4132A30DBVR 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 REF4132A30DBVR meets industry standards.

7.What is the process for return or replacement of REF4132A30DBVR?

All REF4132A30DBVR units undergo pre-shipment inspection (PSI). If there is an issue with REF4132A30DBVR, 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 REF4132A30DBVR part is unused and in its original packaging.

Return procedure for REF4132A30DBVR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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