REF3240AMDBVREP Equivalent & Substitute Parts

Part Overview

The REF3240AMDBVREP 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. For applications requiring continued supply or design updates, equivalent substitute parts from Analog Devices Inc. provide improved performance specifications while maintaining electrical and mechanical compatibility.

Substiute Parts

REF3240AMDBVREP

Texas InstrumentsIn Stock: 2166REF3240AMDBVREP Datasheet

Current PartRFQ

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 REF3240AMDBVREP is determined by the following critical parameters:

Fixed Electrical Requirements:

• Output voltage: 4.096V (exact match required)
• Output current capability: 10 mA minimum
• Package type: SOT-23-6 (mechanical and thermal compatibility)
• Surface mount configuration

Allowable Parameter Variations:

• Tolerance: May be equal to or better (lower) than ±0.2%
• Temperature coefficient: May be equal to or lower than 40ppm/°C
• Supply current: May be equal to or lower than 120µA
• Input voltage range: Must encompass or exceed 4.146V ~ 5.5V
• Operating temperature range: Must encompass or exceed -55°C ~ 125°C

The three substitute parts listed (ADR3440ARJZ-R2, ADR3440ARJZ-R7, and MAX6071BAUT41+T) meet all fixed electrical requirements and offer improved performance in tolerance, temperature stability, and noise characteristics.

Parameter Comparison

Engineering Selection Recommendations

ADR3440ARJZ-R2 and ADR3440ARJZ-R7: Both variants are functionally identical with Active product status and superior performance metrics compared to the REF3240AMDBVREP. They offer ±0.1% tolerance, 8ppm/°C temperature coefficient, and reduced noise specifications. The primary distinction is packaging format: ADR3440ARJZ-R2 is supplied in Cut Tape & Digi-Reel format with 2100 units in stock, while ADR3440ARJZ-R7 is also in Cut Tape & Digi-Reel format with significantly higher inventory (33546 units). Both maintain ROHS3 compliance and MSL 1 rating. The lower operating temperature minimum (-40°C versus -55°C) is acceptable for most applications unless extended low-temperature operation below -40°C is required.

MAX6071BAUT41+T: This part delivers the highest performance specification with ±0.08% tolerance and the lowest noise floor (9.6µVp-p, 0.1Hz to 10Hz; 12µVrms, 10Hz to 10kHz). It maintains Active product status and ROHS3 compliance. The supply current requirement is higher at 350µA compared to 100µA for the ADR3440 variants. Selection of this part is appropriate for applications requiring superior output voltage stability and minimal noise contribution. Tape & Reel packaging is provided with 3200 units in stock.

All three substitute parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can ADR3440ARJZ-R2 and ADR3440ARJZ-R7 be used interchangeably with REF3240AMDBVREP? A: Yes. Both parts deliver the same 4.096V fixed output at 10 mA in SOT-23-6 packaging. The ADR3440 variants provide improved tolerance (±0.1% versus ±0.2%), lower temperature coefficient (8ppm/°C versus 40ppm/°C), and reduced noise. The primary consideration is the minimum operating temperature: ADR3440 parts operate from -40°C, while REF3240 operates from -55°C. If your application requires operation below -40°C, the original part or a custom solution is necessary.

Q: What is the difference between ADR3440ARJZ-R2 and ADR3440ARJZ-R7? A: These parts are electrically and mechanically identical. Both are supplied in Cut Tape & Digi-Reel packaging. The primary difference is inventory availability: ADR3440ARJZ-R7 has substantially higher stock (33546 units versus 2100 units), making it the preferred choice for volume production or long-term supply assurance.

Q: Should I select MAX6071BAUT41+T over the ADR3440 variants? A: Selection depends on application requirements. MAX6071BAUT41+T offers superior performance with ±0.08% tolerance and significantly lower noise (9.6µVp-p versus 29µVp-p in the 0.1Hz to 10Hz band). However, it requires higher supply current (350µA versus 100µA). Choose MAX6071BAUT41+T for precision analog applications where output voltage stability and noise performance are critical. Choose ADR3440 variants for general-purpose applications where lower power consumption is beneficial.

Q: Are all substitute parts pin-compatible with REF3240AMDBVREP? A: Yes. All parts use SOT-23-6 packaging with identical pinout configuration, enabling direct board-level substitution without layout modifications.

Q: What is the impact of the lower minimum operating temperature on ADR3440 and MAX6071 parts? A: The ADR3440 and MAX6071 parts specify -40°C minimum operating temperature versus -55°C for REF3240AMDBVREP. If your application operates in environments colder than -40°C, verify that the substitute part's temperature range is acceptable. For most commercial and industrial applications operating above -40°C, this difference is not a limiting factor.

Q: Are moisture sensitivity levels compatible? A: REF3240AMDBVREP carries MSL 2 (1 Year), while all substitute parts carry MSL 1 (Unlimited). MSL 1 represents superior moisture resistance and longer shelf life, providing a reliability advantage for the substitute parts.