REF3225AMDBVREPG4 Equivalent & Substitute Parts

Part Overview

The REF3225AMDBVREPG4 is a Series Voltage Reference IC manufactured by Texas Instruments, designed to provide a fixed 2.5V output with ±0.2% tolerance in a SOT-23-6 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part delivers 10 mA output current with low noise characteristics suitable for precision analog applications requiring stable voltage references.

Substiute Parts

REF3225AMDBVREPG4

Texas InstrumentsIn Stock: 770REF3225AMDBVREPG4 Datasheet

Current PartRFQ

ADR3425ARJZ-R7

Analog Devices Inc.In Stock: 40505ADR3425ARJZ-R7 Datasheet

MFR RecommendedRFQ

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

Substitute parts for the REF3225AMDBVREPG4 are selected based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

• Fixed output voltage of 2.5V
• Output current capability of 10 mA minimum
• SOT-23-6 surface mount package
• Input voltage range overlap with 2.55V ~ 5.5V
• Operating temperature range that encompasses or matches -55°C ~ 125°C
• ROHS3 compliance and EAR99 classification

Substitute Parts Identified:

1. ADR3425ARJZ-R7 (Analog Devices Inc.) - Active product with improved tolerance (±0.1%) and lower temperature coefficient (8 ppm/°C). Input range 2.7V ~ 5.5V, operating temperature -40°C ~ 125°C.

2. MAX6071AAUT25+T (Analog Devices Inc./Maxim Integrated) - Active product with superior tolerance (±0.04%) and lowest temperature coefficient (6 ppm/°C). Input range 2.8V ~ 5.5V, operating temperature -40°C ~ 125°C.

3. MAX6071BAUT25+T (Analog Devices Inc./Maxim Integrated) - Active product with tolerance (±0.08%) and temperature coefficient (8 ppm/°C). Input range 2.8V ~ 5.5V, operating temperature -40°C ~ 125°C.

All substitute parts maintain the 2.5V fixed output, 10 mA output current, SOT-23-6 package configuration, and ROHS3 compliance required for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Minimum Performance Requirement): The ADR3425ARJZ-R7 provides the most direct substitution path. As an active product from Analog Devices Inc., it maintains identical output voltage and current specifications while offering improved tolerance (±0.1% vs ±0.2%) and significantly lower temperature coefficient (8 ppm/°C vs 40 ppm/°C). The input voltage range minimum increases from 2.55V to 2.7V, which is acceptable for most applications. Operating temperature range reduces to -40°C ~ 125°C, suitable for commercial and industrial applications. MSL rating improves to 1 (Unlimited), reducing moisture sensitivity concerns.

For Enhanced Performance Applications: The MAX6071AAUT25+T and MAX6071BAUT25+T offer superior performance characteristics with active product status. MAX6071AAUT25+T delivers the tightest tolerance (±0.04%) and lowest temperature coefficient (6 ppm/°C), with significantly reduced noise specifications. MAX6071BAUT25+T provides a middle-ground option with ±0.08% tolerance and 8 ppm/°C temperature coefficient. Both feature improved MSL ratings and ROHS3 compliance. Supply current increases to 300 µA compared to the original 120 µA, which should be evaluated against power budget constraints.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 classification, ensuring regulatory continuity. The transition from obsolete to active product status eliminates long-term supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can ADR3425ARJZ-R7 be used as a direct pin-for-pin replacement? A: Yes. The ADR3425ARJZ-R7 maintains identical SOT-23-6 pinout and functional specifications (2.5V output, 10 mA current). The input voltage range minimum increases from 2.55V to 2.7V, which is compatible with most applications. Operating temperature range reduces to -40°C ~ 125°C, acceptable for standard commercial and industrial use cases.

Q: What are the key performance improvements in MAX6071 series substitutes? A: The MAX6071AAUT25+T and MAX6071BAUT25+T offer significantly improved tolerance and temperature coefficient specifications. MAX6071AAUT25+T achieves ±0.04% tolerance with 6 ppm/°C temperature coefficient, compared to the original ±0.2% and 40 ppm/°C. Noise performance is substantially reduced across both frequency bands. These improvements benefit precision analog circuits requiring tighter voltage stability.

Q: Are there input voltage range limitations with substitute parts? A: Yes. The original REF3225AMDBVREPG4 accepts input from 2.55V minimum. ADR3425ARJZ-R7 requires 2.7V minimum, while MAX6071 variants require 2.8V minimum. Applications operating below these thresholds require design modification or alternative component selection.

Q: How does supply current affect component selection? A: The original part draws 120 µA supply current. ADR3425ARJZ-R7 reduces this to 100 µA, beneficial for low-power applications. MAX6071 variants increase supply current to 300 µA. For battery-powered or ultra-low-power designs, ADR3425ARJZ-R7 is preferred. For applications with adequate power budgets, MAX6071 variants offer superior performance.

Q: What is the significance of MSL rating changes? A: The original part carries MSL 2 (1 Year) rating, requiring controlled storage conditions. All substitute parts feature MSL 1 (Unlimited) rating, eliminating moisture sensitivity constraints and simplifying inventory management and manufacturing processes.

Q: Can these parts be used in extended temperature applications? A: The original REF3225AMDBVREPG4 operates to -55°C minimum. All substitute parts operate to -40°C minimum. Applications requiring -55°C operation must retain the original part or identify alternative components with extended temperature specifications.