REF5050IDG4 Equivalent & Substitute Parts

Part Overview

The REF5050IDG4 is a series voltage reference IC manufactured by Texas Instruments, delivering a fixed 5V output with ±0.05% tolerance. This precision reference is designed for applications requiring stable voltage references in power management circuits. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts maintain the core electrical specifications while offering improved availability and, in some cases, enhanced performance characteristics.

Key Parameters

Parameter	REF5050IDG4
Output Voltage (Fixed)	5V
Output Current	10 mA
Tolerance	±0.05%
Temperature Coefficient	3 ppm/°C
Noise (0.1Hz to 10Hz)	15 µVpp/V
Input Voltage Range	5.2V ~ 18V
Supply Current	1.2 mA
Operating Temperature	-40°C ~ 125°C
Package	8-SOIC
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the REF5050IDG4 is determined by the following critical parameters:

Output Voltage: Must be fixed at 5V
Output Current: Must support minimum 10 mA
Package: Must be 8-SOIC form factor
Tolerance & Stability: Tolerance of ±0.05% or better; temperature coefficient of 3 ppm/°C or lower
Input Voltage Range: Must accommodate 5.2V ~ 18V minimum
Operating Temperature: Must cover -40°C ~ 125°C
Compliance: ROHS3 compliant

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Identical Specifications)

REF5050ID: Texas Instruments part with identical electrical specifications, differing only in packaging format (Tube vs. original packaging)

Category 2 - Functional Equivalents (Enhanced or Comparable Performance)

MAX875AESA+ and MAX875AESA+T: Superior tolerance (±0.04%), lower temperature coefficient (7 ppm/°C), reduced noise, and lower supply current. Operating temperature limited to -40°C ~ 85°C.
MAX875BESA+ and MAX875BESA+T: Tolerance of ±0.06%, temperature coefficient of 20 ppm/°C, reduced noise, and lower supply current. Operating temperature limited to -40°C ~ 85°C.
ADR02WARZ-REEL and ADR02WARZ-REEL7: Tolerance of ±0.1%, automotive-grade qualification, wider input voltage range (7V ~ 26V), lower supply current (1 mA), and superior moisture sensitivity rating (MSL 1).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Tolerance	Temp Coeff	Input Voltage	Supply Current	Operating Temp	Package	Status
REF5050IDG4	Texas Instruments	5V	10 mA	±0.05%	3 ppm/°C	5.2V ~ 18V	1.2 mA	-40°C ~ 125°C	8-SOIC	Obsolete
REF5050ID	Texas Instruments	5V	10 mA	±0.05%	3 ppm/°C	5.2V ~ 18V	1.2 mA	-40°C ~ 125°C	8-SOIC	Active
MAX875AESA+	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.04%	7 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	8-SOIC	Active
MAX875AESA+T	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.04%	7 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	8-SOIC	Active
MAX875BESA+	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.06%	20 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	8-SOIC	Active
MAX875BESA+T	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.06%	20 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	8-SOIC	Active
ADR02WARZ-REEL	Analog Devices Inc.	5V	10 mA	±0.1%	10 ppm/°C	7V ~ 26V	1 mA	-40°C ~ 125°C	8-SOIC	Active
ADR02WARZ-REEL7	Analog Devices Inc.	5V	10 mA	±0.1%	10 ppm/°C	7V ~ 26V	1 mA	-40°C ~ 125°C	8-SOIC	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Performance) Select REF5050ID when the original REF5050IDG4 specifications are required without modification. This part maintains all electrical characteristics and is actively manufactured by Texas Instruments, ensuring long-term availability and ROHS3 compliance.

For Enhanced Precision Applications Select MAX875AESA+ or MAX875AESA+T when superior tolerance (±0.04%) and lower temperature coefficient (7 ppm/°C) are beneficial. These parts offer reduced noise and lower supply current consumption. Note the operating temperature range is limited to -40°C ~ 85°C; applications requiring operation above 85°C are not suitable for this substitution.

For Cost-Optimized Designs with Relaxed Tolerance Select MAX875BESA+ or MAX875BESA+T when tolerance of ±0.06% is acceptable. These parts provide the same noise and current advantages as the MAX875A series with lower cost. Operating temperature limitation applies (-40°C ~ 85°C).

For Automotive and Extended Input Voltage Applications Select ADR02WARZ-REEL or ADR02WARZ-REEL7 when automotive-grade qualification and extended input voltage range (7V ~ 26V) are required. These parts maintain the full operating temperature range (-40°C ~ 125°C) and offer superior moisture sensitivity rating (MSL 1). Tolerance of ±0.1% is acceptable for applications not requiring the original ±0.05% specification.

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

Frequently Asked Questions (FAQ)

Q: Can REF5050ID be used as a direct replacement for REF5050IDG4? A: Yes. REF5050ID is electrically and functionally identical to REF5050IDG4. The difference is packaging format (Tube vs. original). Both maintain ±0.05% tolerance, 3 ppm/°C temperature coefficient, and -40°C ~ 125°C operating range.

Q: What is the key difference between MAX875A and MAX875B series? A: MAX875A offers ±0.04% tolerance with 7 ppm/°C temperature coefficient. MAX875B offers ±0.06% tolerance with 20 ppm/°C temperature coefficient. Both consume 700 µA supply current versus 1.2 mA for the REF5050IDG4. Both are limited to -40°C ~ 85°C operation.

Q: Why is the ADR02 series suitable for REF5050IDG4 replacement? A: ADR02WARZ-REEL and ADR02WARZ-REEL7 maintain 5V fixed output, 10 mA current capability, and 8-SOIC packaging. They preserve the full -40°C ~ 125°C operating range and offer automotive-grade qualification. Tolerance of ±0.1% is less stringent than the original ±0.05%, but acceptable for many applications.

Q: What is the impact of different input voltage ranges? A: REF5050IDG4 requires 5.2V ~ 18V input. MAX875 series requires 7V ~ 18V minimum input. ADR02 series accepts 7V ~ 26V input. Applications with input voltages below 7V must use REF5050ID or REF5050IDG4. Applications with input voltages above 18V require ADR02 series.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of REF5050IDG4.

Q: What packaging options are available for substitutes? A: REF5050ID is supplied in Tube packaging. MAX875AESA+ and MAX875BESA+ are supplied in Tube. MAX875AESA+T and MAX875BESA+T are supplied in Tape & Reel. ADR02WARZ-REEL is supplied in Reel format. ADR02WARZ-REEL7 is supplied in Cut Tape & Digi-Reel format. Select based on assembly requirements.

Q: Can MAX875 series be used in applications requiring -40°C ~ 125°C operation? A: No. MAX875 series is limited to -40°C ~ 85°C. For full temperature range operation, use REF5050ID or ADR02 series.

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