REF3320AIDBZTG4 Equivalent & Substitute Parts

Part Overview

The REF3320AIDBZTG4 is a series voltage reference IC manufactured by Texas Instruments, delivering a fixed 2.048V output with ±0.15% tolerance in a SOT-23-3 surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The REF3320AIDBZTG4 operates across a 2.248V to 5.5V input range with 5 mA output current capability and is suitable for precision analog applications requiring stable voltage references.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.048V
Output Current	5 mA
Tolerance	±0.15%
Temperature Coefficient	30ppm/°C
Noise (0.1Hz to 10Hz)	55µVp-p
Input Voltage Range	2.248V ~ 5.5V
Supply Current	8.5µA
Operating Temperature	-40°C ~ 125°C
Package	SOT-23-3 (TO-236-3, SC-59)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the REF3320AIDBZTG4 are selected based on the following critical parameters that determine functional compatibility:

Fixed output voltage of 2.048V
Output current capability of 5 mA or greater
Tolerance specification of ±0.15% or tighter
SOT-23-3 package compatibility
Operating temperature range covering -40°C to 125°C or equivalent industrial range
Surface mount technology

Substitutes are grouped into two categories: parametric equivalents (identical electrical specifications with different packaging or product status) and manufacturer-recommended alternatives (functionally compatible with minor parameter variations acceptable for most applications).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Tolerance	Temp Coeff	Input Range	Supply Current	Operating Temp	Product Status
REF3320AIDBZTG4	Texas Instruments	2.048V	5 mA	±0.15%	30ppm/°C	2.248V ~ 5.5V	8.5µA	-40°C ~ 125°C	Obsolete
REF3320AIDBZR	Texas Instruments	2.048V	5 mA	±0.15%	30ppm/°C	2.248V ~ 5.5V	8.5µA	-40°C ~ 125°C	Active
REF3320AIDBZT	Texas Instruments	2.048V	5 mA	±0.15%	30ppm/°C	2.248V ~ 5.5V	8.5µA	-40°C ~ 125°C	Active
ADR380ARTZ-REEL7	Analog Devices Inc.	2.048V	5 mA	±0.24%	25ppm/°C	2.4V ~ 18V	140µA	-40°C ~ 85°C	Active
ISL21080CIH320Z-TK	Renesas Electronics	2.048V	7 mA	±0.3%	50ppm/°C	2.7V ~ 5.5V	1.5µA	-40°C ~ 85°C	Active
ISL60002BIH320Z-T7A	Renesas Electronics	2.048V	7 mA	±0.05%	20ppm/°C	2.7V ~ 5.5V	900nA	-40°C ~ 85°C	Active
MAX6018AEUR21+T	Analog Devices Inc./Maxim	2.048V	1 mA	±0.2%	50ppm/°C	2.25V ~ 5.5V	6µA	-40°C ~ 85°C	Active
MAX6018BEUR21+T	Analog Devices Inc./Maxim	2.048V	1 mA	±0.4%	50ppm/°C	2.25V ~ 5.5V	6µA	-40°C ~ 85°C	Active
MAX6062AEUR+T	Analog Devices Inc./Maxim	2.048V	5 mA	±0.24%	20ppm/°C	2.5V ~ 12.6V	125µA	-40°C ~ 85°C	Active
MAX6062BEUR+T	Analog Devices Inc./Maxim	2.048V	5 mA	±0.39%	30ppm/°C	2.5V ~ 12.6V	125µA	-40°C ~ 85°C	Active
MAX6106EUR+T	Analog Devices Inc./Maxim	2.048V	5 mA	±0.4%	75ppm/°C	2.5V ~ 12.6V	125µA	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacements)

REF3320AIDBZR and REF3320AIDBZT are parametric equivalents of the REF3320AIDBZTG4, offering identical electrical specifications with active product status. Both parts maintain the same 2.048V output, ±0.15% tolerance, 5 mA output current, and operating temperature range. REF3320AIDBZR is available in Cut Tape and Digi-Reel packaging with 19,632 units in stock. REF3320AIDBZT is available in Cut Tape and Digi-Reel packaging with 6,190 units in stock. Both are ROHS3 compliant and REACH unaffected.

Manufacturer-Recommended Alternatives

For applications where the extended operating temperature range of the original part is not required, the following active alternatives are available:

ISL60002BIH320Z-T7A (Renesas Electronics) provides the tightest tolerance specification at ±0.05% with superior temperature coefficient of 20ppm/°C and lowest supply current of 900nA. This part exceeds the original specification in accuracy and power efficiency.

MAX6062AEUR+T (Analog Devices Inc./Maxim) matches the 5 mA output current with ±0.24% tolerance and offers extended input voltage range to 12.6V. Temperature coefficient is 20ppm/°C with low noise characteristics.

ADR380ARTZ-REEL7 (Analog Devices Inc.) provides ±0.24% tolerance with extended input voltage range to 18V, suitable for applications requiring higher supply voltage flexibility.

All recommended alternatives are ROHS3 compliant, REACH unaffected, and carry active product status with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can REF3320AIDBZR or REF3320AIDBZT be used as direct replacements for REF3320AIDBZTG4?

A: Yes. Both parts are parametric equivalents with identical electrical specifications: 2.048V output, ±0.15% tolerance, 5 mA output current, 30ppm/°C temperature coefficient, and SOT-23-3 package. The primary difference is product status (active versus obsolete) and packaging format. Both are pin-compatible and electrically interchangeable.

Q: What is the key difference between the Texas Instruments REF3320 series and the Renesas ISL60002BIH320Z-T7A?

A: The ISL60002BIH320Z-T7A offers superior tolerance (±0.05% versus ±0.15%), lower temperature coefficient (20ppm/°C versus 30ppm/°C), and significantly lower supply current (900nA versus 8.5µA). However, the operating temperature range is limited to -40°C to 85°C compared to the REF3320's -40°C to 125°C. Both maintain the same 2.048V output and SOT-23-3 package.

Q: Are the MAX6018 series parts suitable substitutes despite their 1 mA output current rating?

A: The MAX6018AEUR21+T and MAX6018BEUR21+T are not recommended as direct substitutes for applications requiring 5 mA output current. These parts are rated for 1 mA maximum output current, which is insufficient for the REF3320AIDBZTG4's 5 mA specification. They are suitable only for low-current reference applications.

Q: What is the significance of the extended input voltage range in ADR380ARTZ-REEL7?

A: The ADR380ARTZ-REEL7 accepts input voltages from 2.4V to 18V, compared to the REF3320's 2.248V to 5.5V range. This extended range is beneficial for applications with variable or higher supply voltages. However, the operating temperature range is limited to -40°C to 85°C, and supply current is higher at 140µA.

Q: Are all substitute parts available in SOT-23-3 packaging?

A: Yes. All listed substitute parts are manufactured in SOT-23-3 (TO-236-3, SC-59) surface mount packages, ensuring mechanical and electrical compatibility with the original REF3320AIDBZTG4 footprint.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts listed are ROHS3 compliant and REACH unaffected. Moisture sensitivity levels vary: Texas Instruments REF3320 series parts are MSL 2 (1 Year), while Analog Devices and Renesas parts are MSL 1 (Unlimited), indicating superior moisture resistance for the latter group.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message