REF5050AIDG4 Equivalent & Substitute Parts

Part Overview

The REF5050AIDG4 is a series voltage reference IC manufactured by Texas Instruments, delivering a fixed 5V output with ±0.1% tolerance and 10 mA output current capability. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. The part operates across the industrial temperature range of -40°C to 125°C and is housed in an 8-SOIC surface mount package. Substitute parts must maintain electrical compatibility while meeting current product availability and compliance requirements.

Key Parameters

Parameter	REF5050AIDG4
Output Voltage (Fixed)	5V
Output Current	10 mA
Tolerance	±0.1%
Temperature Coefficient	8 ppm/°C
Input Voltage Range	5.2V ~ 18V
Supply Current	1.2 mA
Operating Temperature	-40°C ~ 125°C
Package	8-SOIC
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: fixed 5V output voltage, 10 mA output current capability, 8-SOIC package format, and surface mount mounting type. All substitute parts listed maintain these core electrical and mechanical specifications. Secondary parameters including tolerance, temperature coefficient, and input voltage range define performance tier groupings. Parts are grouped into three categories based on tolerance specification: precision grade (±0.04%), standard grade (±0.06% to ±0.1%), and general purpose grade (±0.15%).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Tolerance	Temp Coefficient	Input Voltage	Supply Current	Operating Temp	Product Status
REF5050AIDG4	Texas Instruments	5V	10 mA	±0.1%	8 ppm/°C	5.2V ~ 18V	1.2 mA	-40°C ~ 125°C	Obsolete
REF5050AID	Texas Instruments	5V	10 mA	±0.1%	8 ppm/°C	5.2V ~ 18V	1.2 mA	-40°C ~ 125°C	Active
ADR02WARZ-REEL	Analog Devices Inc.	5V	10 mA	±0.1%	10 ppm/°C	7V ~ 26V	1 mA	-40°C ~ 125°C	Active
ADR02WARZ-REEL7	Analog Devices Inc.	5V	10 mA	±0.1%	10 ppm/°C	7V ~ 26V	1 mA	-40°C ~ 125°C	Active
LTC1798CS8-5#PBF	Analog Devices Inc.	5V	10 mA	±0.15%	40 ppm/°C	5.2V ~ 12.6V	8.5 µA	0°C ~ 70°C	Active
LTC1798CS8-5#TRPBF	Analog Devices Inc.	5V	10 mA	±0.15%	40 ppm/°C	5.2V ~ 12.6V	8.5 µA	0°C ~ 70°C	Active
MAX875AESA+	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.04%	7 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
MAX875AESA+T	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.04%	7 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
MAX875BESA+	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.06%	20 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
MAX875BESA+T	Analog Devices Inc./Maxim Integrated	5V	10 mA	±0.06%	20 ppm/°C	7V ~ 18V	700 µA	-40°C ~ 85°C	Active

Engineering Selection Recommendations

REF5050AID is the direct replacement for REF5050AIDG4, manufactured by Texas Instruments with identical electrical specifications and active product status. This part maintains the same tolerance, temperature coefficient, and operating temperature range while offering improved availability through current production.

For applications requiring extended input voltage range and automotive-grade qualification, ADR02WARZ-REEL and ADR02WARZ-REEL7 provide equivalent tolerance performance with wider input voltage acceptance (7V ~ 26V) and lower supply current consumption. Both variants are automotive-qualified and available in active production status.

MAX875AESA+ and MAX875AESA+T deliver superior tolerance performance at ±0.04%, suitable for precision measurement and calibration applications. These parts operate within the -40°C to 85°C temperature range and require higher supply current (700 µA). Packaging differentiation exists between tube (MAX875AESA+) and tape & reel (MAX875AESA+T) formats.

MAX875BESA+ and MAX875BESA+T offer intermediate tolerance specification (±0.06%) with the same supply current and temperature range as the MAX875A variants, providing cost-optimized precision performance.

LTC1798CS8-5#PBF and LTC1798CS8-5#TRPBF are suitable only for applications with operating temperature limits of 0°C to 70°C and input voltage range of 5.2V to 12.6V. These parts feature significantly lower supply current (8.5 µA) but exhibit higher temperature coefficient (40 ppm/°C) and relaxed tolerance (±0.15%).

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can REF5050AID directly replace REF5050AIDG4 in existing designs?

A: Yes. REF5050AID is the active production equivalent with identical electrical specifications, tolerance, temperature coefficient, and operating temperature range. The only difference is product status transition from obsolete to active.

Q: What are the key differences between ADR02WARZ-REEL and ADR02WARZ-REEL7?

A: Both parts are electrically identical with ±0.1% tolerance and automotive-grade qualification. The primary difference is packaging format: ADR02WARZ-REEL is supplied in standard reel format, while ADR02WARZ-REEL7 is supplied in cut tape and Digi-Reel format.

Q: When should MAX875AESA+ be selected over REF5050AID?

A: MAX875AESA+ is appropriate for applications requiring precision tolerance of ±0.04% and lower temperature coefficient (7 ppm/°C). However, it operates only to 85°C maximum and requires higher supply current (700 µA). Select this part only if the enhanced tolerance specification justifies these operational constraints.

Q: Are LTC1798CS8-5 variants suitable for industrial temperature range applications?

A: No. LTC1798CS8-5 variants operate only from 0°C to 70°C, which does not meet industrial temperature specifications (-40°C to 125°C). These parts are restricted to commercial temperature range applications.

Q: What is the significance of the "+T" suffix in MAX875AESA+T?

A: The "+T" suffix indicates tape & reel packaging format, suitable for automated assembly processes. MAX875AESA+ without the "+T" suffix is supplied in tube packaging. Electrical specifications are identical between both formats.

Q: Do all substitute parts maintain the same 8-SOIC package footprint?

A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm width) surface mount package, ensuring PCB layout compatibility with the original REF5050AIDG4 design.

Q: Which substitute part offers the widest input voltage range?

A: ADR02WARZ-REEL and ADR02WARZ-REEL7 accept input voltage from 7V to 26V, compared to 5.2V to 18V for REF5050AIDG4. This extended range is beneficial for applications with variable supply voltages.

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