REF3225AIDBVR Equivalent & Substitute Parts

Part Overview

The REF3225AIDBVR is a Series Voltage Reference IC manufactured by Texas Instruments, delivering a fixed 2.5V output with ±0.2% tolerance in a SOT-23-6 surface mount package. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. The part remains in stock with 19,607 units available, making it suitable for legacy system maintenance, repair, and existing design support where component continuity is required.

Substiute Parts

REF3225AIDBVR

Texas InstrumentsIn Stock: 19703REF3225AIDBVR Datasheet

Current PartRFQ

REF3425IDBVR

Texas InstrumentsIn Stock: 31576REF3425IDBVR Datasheet

MFR RecommendedRFQ

REF3225AIDBVT

Texas InstrumentsIn Stock: 7414REF3225AIDBVT Datasheet

Parametric EquivalentRFQ

MAX6071AAUT25+T

Analog Devices Inc./Maxim IntegratedIn Stock: 22739MAX6071AAUT25+T Datasheet

MFR RecommendedRFQ

MAX6071BAUT25+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1582MAX6071BAUT25+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the REF3225AIDBVR is determined by the following critical parameters:

• Output Voltage: Must be fixed at 2.5V
• Output Current Capability: Minimum 10 mA
• Package Type: SOT-23-6 surface mount
• Operating Temperature Range: -40°C ~ 125°C
• Input Voltage Compatibility: Overlap with 2.55V ~ 5.5V range

Substitute parts are grouped into two categories:

Parametric Equivalent: REF3225AIDBVT matches all electrical specifications and package requirements of the main part, differing only in tape packaging format (Digi-Reel vs. Cut Tape).

MFR Recommended Upgrades: REF3425IDBVR, MAX6071AAUT25+T, and MAX6071BAUT25+T meet or exceed the core functional requirements while offering improved performance characteristics. These parts maintain the 2.5V fixed output, 10 mA current capability, SOT-23-6 package, and full operating temperature range. Tolerance, temperature coefficient, and noise specifications vary as detailed in the comparison table.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Legacy Support): REF3225AIDBVT is the parametric equivalent, maintaining identical electrical performance and specifications. This part is appropriate when component continuity is the primary objective and existing design validation is already complete.

For Active Product Line Migration: REF3425IDBVR is the manufacturer-recommended upgrade from Texas Instruments. It provides superior tolerance (±0.05% vs. ±0.2%), lower temperature coefficient (6 ppm/°C vs. 20 ppm/°C), and reduced noise performance while maintaining the same output voltage, current capability, and package format. The extended input voltage range (3V ~ 12V) provides additional design flexibility. This part carries Active product status, ensuring long-term availability and manufacturer support.

For Enhanced Performance Requirements: MAX6071AAUT25+T and MAX6071BAUT25+T from Analog Devices Inc./Maxim Integrated offer the lowest noise specifications (6 µVrms in the 10Hz to 10kHz band) and improved temperature stability. MAX6071AAUT25+T delivers the tightest tolerance (±0.04%) among all substitutes. Both parts feature Moisture Sensitivity Level 1 (Unlimited), providing superior moisture protection compared to the main part. Supply current is higher (300 µA vs. 135 µA), which may impact power budget considerations in battery-powered applications.

All substitute parts maintain ROHS3 compliance and are suitable for the full -40°C ~ 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can REF3225AIDBVT be used as a direct replacement for REF3225AIDBVR?

A: Yes. REF3225AIDBVT is a parametric equivalent with identical electrical specifications, tolerance, temperature coefficient, noise characteristics, and package type. The only difference is the tape packaging format. Both parts are classified as Not For New Designs.

Q: What is the primary advantage of REF3425IDBVR over REF3225AIDBVR?

A: REF3425IDBVR provides superior accuracy with ±0.05% tolerance compared to ±0.2%, a lower temperature coefficient (6 ppm/°C vs. 20 ppm/°C), and significantly reduced noise performance. It also carries Active product status, ensuring continued manufacturer support and availability. Supply current is lower at 95 µA.

Q: Are the MAX6071 series parts compatible with existing REF3225AIDBVR designs?

A: MAX6071AAUT25+T and MAX6071BAUT25+T are functionally compatible, maintaining the 2.5V fixed output, 10 mA current capability, and SOT-23-6 package. However, supply current is higher (300 µA vs. 135 µA), which must be evaluated in power-constrained applications. Both parts offer superior noise performance and improved moisture sensitivity rating (MSL 1 vs. MSL 2).

Q: What is the difference between MAX6071AAUT25+T and MAX6071BAUT25+T?

A: Both parts are functionally equivalent with identical noise, temperature coefficient, and supply current specifications. MAX6071AAUT25+T provides tighter tolerance (±0.04% vs. ±0.08%), making it suitable for applications requiring higher accuracy. MAX6071BAUT25+T is appropriate for applications where ±0.08% tolerance is acceptable.

Q: Can these parts be used interchangeably in high-temperature applications?

A: All substitute parts support the full -40°C ~ 125°C operating temperature range. However, temperature coefficient differences affect long-term stability. REF3425IDBVR, MAX6071AAUT25+T, and MAX6071BAUT25+T have lower temperature coefficients (6 ppm/°C or 8 ppm/°C) compared to REF3225AIDBVR (20 ppm/°C), resulting in better output voltage stability across the temperature range.

Q: What is the impact of input voltage range differences on substitution?

A: REF3225AIDBVR operates with input voltage 2.55V ~ 5.5V. REF3425IDBVR extends this to 3V ~ 12V, providing compatibility with higher supply voltages. MAX6071AAUT25+T and MAX6071BAUT25+T operate at 2.8V ~ 5.5V. Verify that the substitute part's input voltage range encompasses your application's supply voltage before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. REF3225AIDBVR, REF3225AIDBVT, REF3425IDBVR, MAX6071AAUT25+T, and MAX6071BAUT25+T are all ROHS3 compliant and suitable for applications requiring RoHS certification.