REF3240AIDBVT Equivalent & Substitute Parts

Part Overview

The REF3240AIDBVT is a series voltage reference IC manufactured by Texas Instruments, delivering a fixed 4.096V output with ±0.2% tolerance in a SOT-23-6 surface mount package. This part is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Finding equivalent and substitute parts is necessary for ongoing production support, design updates, and inventory management where higher performance specifications or active product status may be required.

Substiute Parts

REF3240AIDBVT

Texas InstrumentsIn Stock: 1902REF3240AIDBVT Datasheet

Current PartRFQ

REF3440IDBVR

Texas InstrumentsIn Stock: 3174REF3440IDBVR Datasheet

MFR RecommendedRFQ

REF3240AIDBVR

Texas InstrumentsIn Stock: 5892REF3240AIDBVR Datasheet

Parametric EquivalentRFQ

ADR3440ARJZ-R2

Analog Devices Inc.In Stock: 2123ADR3440ARJZ-R2 Datasheet

MFR RecommendedRFQ

ADR3440ARJZ-R7

Analog Devices Inc.In Stock: 33610ADR3440ARJZ-R7 Datasheet

MFR RecommendedRFQ

MAX6071BAUT41+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3299MAX6071BAUT41+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the REF3240AIDBVT is determined by the following critical parameters:

• Output Voltage: Must be 4.096V fixed
• Output Current: Must support minimum 10 mA
• Package / Case: Must be SOT-23-6 for direct pin-compatible replacement
• Operating Temperature Range: Must cover -40°C ~ 125°C
• Mounting Type: Must be Surface Mount
• Compliance: RoHS3 and REACH compliance required

Substitute parts are grouped into two categories:

Parametric Equivalent: REF3240AIDBVR shares identical electrical specifications and tolerance with the main part, differing only in packaging format (Tape & Reel vs. Tape & Reel variant).

MFR Recommended Substitutes: REF3440IDBVR, ADR3440ARJZ-R2, ADR3440ARJZ-R7, and MAX6071BAUT41+T meet all core requirements while offering improved performance characteristics (lower tolerance, lower temperature coefficient, lower noise) and active product status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalent): REF3240AIDBVR is the parametric equivalent, offering identical electrical specifications and tolerance performance. Both parts carry Not For New Designs status and share the same MSL rating of 2. This option is suitable for existing inventory management and production continuity where specification requirements remain unchanged.

For New Designs and Long-Term Availability: REF3440IDBVR is the manufacturer-recommended upgrade from Texas Instruments, providing superior performance with ±0.05% tolerance, 6 ppm/°C temperature coefficient, and active product status. The extended input voltage range (4.596V ~ 12V) provides greater design flexibility. This part is the preferred choice for new designs within the Texas Instruments product family.

For Cross-Manufacturer Alternatives: ADR3440ARJZ-R7 and ADR3440ARJZ-R2 (Analog Devices Inc.) offer ±0.1% tolerance with 8 ppm/°C temperature coefficient and unlimited MSL rating, indicating superior moisture handling for long-term storage. ADR3440ARJZ-R7 has significantly higher inventory availability (33,546 pcs). Both parts are active products suitable for new designs.

For Lowest Noise Performance: MAX6071BAUT41+T delivers the lowest noise specifications (9.6 µVp-p at 0.1Hz-10Hz, 12 µVrms at 10Hz-10kHz) with ±0.08% tolerance. This part is recommended for precision analog applications requiring minimal noise contribution. Note that supply current is elevated at 350 µA compared to other options.

All substitute parts maintain SOT-23-6 package compatibility, -40°C ~ 125°C operating temperature range, and ROHS3 compliance with the main part.

Frequently Asked Questions (FAQ)

Q: Can REF3240AIDBVR be used as a direct replacement for REF3240AIDBVT? A: Yes. REF3240AIDBVR is a parametric equivalent with identical electrical specifications, tolerance, temperature coefficient, and noise characteristics. The only difference is packaging format. Both are pin-compatible in SOT-23-6 packages.

Q: Why should I consider REF3440IDBVR over REF3240AIDBVR? A: REF3440IDBVR offers superior performance with ±0.05% tolerance versus ±0.2%, lower temperature coefficient (6 ppm/°C vs. 20 ppm/°C), and significantly lower noise. Additionally, REF3440IDBVR carries active product status, ensuring long-term availability and support for new designs.

Q: What is the difference between ADR3440ARJZ-R7 and ADR3440ARJZ-R2? A: Both parts are electrically identical with ±0.1% tolerance and 8 ppm/°C temperature coefficient. The primary difference is inventory availability: ADR3440ARJZ-R7 has 33,546 pcs in stock versus 2,100 pcs for ADR3440ARJZ-R2. Both carry MSL rating 1 (Unlimited).

Q: Is MAX6071BAUT41+T compatible with existing PCB layouts designed for REF3240AIDBVT? A: Yes. MAX6071BAUT41+T uses the same SOT-23-6 package and pin configuration, making it a direct physical replacement. However, the elevated supply current (350 µA vs. 135 µA) must be considered in power budget calculations.

Q: Can I use these substitutes in applications requiring input voltages above 5.5V? A: REF3440IDBVR supports input voltages up to 12V, making it suitable for higher input voltage applications. ADR3440ARJZ-R2, ADR3440ARJZ-R7, and MAX6071BAUT41+T support up to 5.5V input. REF3240AIDBVT and REF3240AIDBVR are limited to 5.5V maximum input.

Q: Which substitute part has the best long-term storage characteristics? A: ADR3440ARJZ-R2, ADR3440ARJZ-R7, and MAX6071BAUT41+T all carry MSL rating 1 (Unlimited), indicating superior moisture sensitivity performance compared to REF3240AIDBVT and REF3240AIDBVR (MSL rating 2, 1 Year).

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts (REF3240AIDBVR, REF3440IDBVR, ADR3440ARJZ-R2, ADR3440ARJZ-R7, and MAX6071BAUT41+T) are ROHS3 compliant and REACH unaffected, matching the compliance status of the main part.