REF3240AIDBVTG4 Equivalent & Substitute Parts

Part Overview

The REF3240AIDBVTG4 is a series voltage reference IC from 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 obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across -40°C to 125°C and draws 135µA supply current, suitable for precision analog circuits requiring stable voltage references.

Substiute Parts

REF3240AIDBVTG4

Texas InstrumentsIn Stock: 5674REF3240AIDBVTG4 Datasheet

Current PartRFQ

REF3440IDBVR

Texas InstrumentsIn Stock: 3174REF3440IDBVR Datasheet

MFR RecommendedRFQ

REF3240AIDBVR

Texas InstrumentsIn Stock: 5892REF3240AIDBVR Datasheet

Parametric EquivalentRFQ

REF3240AIDBVT

Texas InstrumentsIn Stock: 1902REF3240AIDBVT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the REF3240AIDBVTG4 is determined by the following critical parameters:

Fixed Output Voltage: 4.096V is the primary functional requirement. All substitute parts must deliver this exact output voltage.

Package Compatibility: SOT-23-6 surface mount package is mandatory for PCB layout compatibility.

Output Current Capability: 10 mA minimum output current ensures the substitute can support the same load requirements.

Operating Temperature Range: -40°C to 125°C defines the thermal operating envelope.

Supply Voltage Range: Input voltage compatibility must be verified. The original part accepts 4.146V to 5.5V.

Tolerance and Noise Performance: While tolerance and noise specifications may vary between substitutes, they define performance classes. Tighter tolerance (lower percentage) and lower noise values represent performance improvements.

Substitute parts are grouped into two categories:

MFR Recommended: REF3440IDBVR offers superior performance with tighter tolerance (±0.05%) and lower noise characteristics, with expanded input voltage range (4.596V ~ 12V).

Parametric Equivalents: REF3240AIDBVR and REF3240AIDBVT maintain identical electrical specifications to the original part but differ in product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: REF3440IDBVR is the recommended substitute. This part carries Active product status, ensuring long-term availability and manufacturer support. It provides superior electrical performance with ±0.05% tolerance, 6ppm/°C temperature coefficient, and significantly lower noise characteristics (3.8µVp-p and 24µVrms). The expanded input voltage range (4.596V ~ 12V) accommodates broader supply configurations. Lower supply current (95µA) reduces power consumption. All specifications maintain ROHS3 compliance and MSL 2 rating.

For Maintenance and Repair: REF3240AIDBVR and REF3240AIDBVT are direct parametric equivalents, maintaining identical electrical specifications to the original REF3240AIDBVTG4. Both parts are classified as Not For New Designs but remain suitable for sustaining production of existing equipment. REF3240AIDBVR is available in Tape & Reel packaging with 5849 pcs in stock. REF3240AIDBVT is also available in Tape & Reel format with 1800 pcs in stock. Both maintain ROHS3 compliance and identical thermal performance.

Supply Voltage Consideration: If the application operates with input voltages below 4.596V, the parametric equivalents (REF3240AIDBVR or REF3240AIDBVT) must be used, as REF3440IDBVR requires minimum 4.596V input.

Frequently Asked Questions (FAQ)

Q: Can REF3440IDBVR directly replace REF3240AIDBVTG4 in existing designs?

A: Yes, REF3440IDBVR is a direct functional replacement. Both parts deliver 4.096V fixed output in SOT-23-6 packaging with 10 mA output current capability and -40°C to 125°C operating range. The REF3440IDBVR offers improved performance specifications. Verify that your supply voltage meets the minimum 4.596V requirement for REF3440IDBVR operation.

Q: What is the difference between REF3240AIDBVR and REF3240AIDBVT?

A: Both parts are parametric equivalents with identical electrical specifications. The difference lies in packaging format: REF3240AIDBVR is supplied in Tape & Reel (TR) format, while REF3240AIDBVT is also supplied in Tape & Reel format. Both maintain the same SOT-23-6 package footprint and electrical performance.

Q: Why is REF3240AIDBVTG4 marked as Obsolete?

A: REF3240AIDBVTG4 has reached end-of-life status. Texas Instruments recommends transitioning to REF3440IDBVR for new designs. For existing production requiring the original specifications, parametric equivalents REF3240AIDBVR and REF3240AIDBVT remain available.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, REF3440IDBVR, REF3240AIDBVR, and REF3240AIDBVT are all ROHS3 compliant with MSL 2 (1 Year) moisture sensitivity rating, matching the original part's compliance profile.

Q: What is the impact of using REF3440IDBVR's lower noise specifications?

A: REF3440IDBVR provides 14× lower peak-to-peak noise (3.8µVp-p vs 53µVp-p) and 3.25× lower RMS noise (24µVrms vs 78µVrms). This improvement benefits precision analog applications requiring lower noise floors. The tighter ±0.05% tolerance and 6ppm/°C temperature coefficient also enhance overall reference stability.

Q: Can I use REF3440IDBVR if my supply voltage is 5V?

A: Yes. REF3440IDBVR accepts input voltages from 4.596V to 12V, so a 5V supply is within specification and provides adequate headroom for stable operation.