REF3220AMDBVREP Equivalent & Substitute Parts

Part Overview

The REF3220AMDBVREP is a Series Voltage Reference IC manufactured by Texas Instruments, delivering a fixed 2.048V 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line.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 new applications or when REF3220AMDBVREP inventory becomes unavailable, equivalent substitute parts with compatible electrical and mechanical specifications are available from both Texas Instruments and Analog Devices Inc.

Substiute Parts

REF3220AMDBVREP

Texas InstrumentsIn Stock: 983REF3220AMDBVREP Datasheet

Current PartRFQ

REF3220AIDBVT

Texas InstrumentsIn Stock: 3151REF3220AIDBVT Datasheet

MFR RecommendedRFQ

ADR3420ARJZ-R2

Analog Devices Inc.In Stock: 1870ADR3420ARJZ-R2 Datasheet

MFR RecommendedRFQ

ADR3420ARJZ-R7

Analog Devices Inc.In Stock: 27457ADR3420ARJZ-R7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the REF3220AMDBVREP is determined by the following critical parameters:

Primary Compatibility Criteria:

• Fixed output voltage of 2.048V
• Output current rating of 10 mA
• SOT-23-6 surface mount package
• Input voltage range compatibility (minimum 2.098V to 5.5V)
• Operating temperature range support (-55°C to 125°C minimum)

Substitute Categories:

Category 1: Direct Texas Instruments Replacement REF3220AIDBVT maintains identical electrical output specifications (2.048V, ±0.2%, 10 mA) with improved temperature coefficient performance (20ppm/°C vs. 40ppm/°C). This part is Active status and shares the same package and base product number, making it the primary direct replacement.

Category 2: Higher Precision Analog Devices Alternatives ADR3420ARJZ-R2 and ADR3420ARJZ-R7 provide enhanced tolerance (±0.1% vs. ±0.2%) and superior temperature coefficient (8ppm/°C vs. 40ppm/°C). Both maintain 2.048V output, 10 mA current, SOT-23-6 package, and Active product status. The primary difference between these two is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Minimum Change): REF3220AIDBVT is the recommended substitute when maintaining design compatibility with the original REF3220AMDBVREP is required. This part is Active status, shares identical output specifications and package, and offers improved temperature coefficient performance. The operating temperature range is reduced to -40°C ~ 125°C; verify this meets application requirements if the original -55°C lower limit is critical.

For Enhanced Performance Applications: ADR3420ARJZ-R2 or ADR3420ARJZ-R7 are suitable when improved accuracy and stability are beneficial. These parts provide ±0.1% tolerance and 8ppm/°C temperature coefficient, reducing long-term drift and output variation. Both are Active status with ROHS3 compliance. The input voltage minimum is 2.3V (vs. 2.098V for REF3220 variants); confirm the application's minimum supply voltage does not fall below this threshold. MSL rating of 1 (Unlimited) provides superior moisture protection compared to MSL 2.

Packaging Consideration: ADR3420ARJZ-R7 offers higher inventory availability (27,369 pcs) in Cut Tape & Digi-Reel format, suitable for lower-volume or prototype applications. ADR3420ARJZ-R2 is available in standard Tape & Reel format (1,833 pcs) for production assembly.

Frequently Asked Questions (FAQ)

Q: Can REF3220AIDBVT be used as a direct drop-in replacement for REF3220AMDBVREP? A: Yes, REF3220AIDBVT is electrically and mechanically compatible. Both deliver 2.048V at ±0.2% tolerance with 10 mA output current in SOT-23-6 packages. The primary difference is the operating temperature range: REF3220AIDBVT operates from -40°C to 125°C, while REF3220AMDBVREP operates from -55°C to 125°C. Verify your application does not require operation below -40°C.

Q: What are the advantages of ADR3420ARJZ series over REF3220 variants? A: ADR3420ARJZ parts offer tighter tolerance (±0.1% vs. ±0.2%) and lower temperature coefficient (8ppm/°C vs. 40ppm/°C for the original or 20ppm/°C for the improved variant). These specifications result in more stable output voltage across temperature and time. Supply current is also lower (100µA vs. 120µA or 135µA). MSL rating is 1 (Unlimited) instead of 2 (1 Year), providing better moisture protection.

Q: Are there input voltage compatibility concerns when switching to ADR3420ARJZ? A: Yes. ADR3420ARJZ requires minimum input voltage of 2.3V, while REF3220 variants accept 2.098V minimum. If your application supplies voltage between 2.098V and 2.3V, REF3220 variants must be used. For applications with supply voltage at or above 2.3V, ADR3420ARJZ is compatible.

Q: What is the difference between ADR3420ARJZ-R2 and ADR3420ARJZ-R7? A: Both parts are electrically identical with 2.048V output, ±0.1% tolerance, and 8ppm/°C temperature coefficient. The difference is packaging format: ADR3420ARJZ-R2 is supplied in Tape & Reel (TR) format, while ADR3420ARJZ-R7 is supplied in Cut Tape (CT) & Digi-Reel format. ADR3420ARJZ-R7 has significantly higher inventory availability (27,369 pcs vs. 1,833 pcs).

Q: Is the REF3220AMDBVREP suitable for new designs? A: No. REF3220AMDBVREP is marked as Not For New Designs. For new applications, use REF3220AIDBVT (Active status, same manufacturer) or ADR3420ARJZ variants (Active status, enhanced performance).

Q: Do all substitute parts meet RoHS3 compliance? A: Yes. REF3220AIDBVT, ADR3420ARJZ-R2, and ADR3420ARJZ-R7 are all ROHS3 Compliant and REACH Unaffected, matching the compliance profile of REF3220AMDBVREP.