MAX5123AEEE 12-Bit Digital to Analog Converter Equivalent & Substitute Parts

Part Overview

The MAX5123AEEE is a 12-bit digital to analog converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring voltage output conversion. This component features a single DAC channel with SPI interface, R-2R architecture, and buffered voltage output. The MAX5123AEEE is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for legacy systems or new designs requiring compatible functionality.

Key Parameters

Parameter	Specification
Number of Bits	12
Number of D/A Converters	1
Output Type	Voltage - Buffered
Data Interface	SPI
Reference Type	External, Internal
Voltage - Supply, Analog	2.7V ~ 3.6V
Voltage - Supply, Digital	2.7V ~ 3.6V
Settling Time	20µs (Typ)
INL/DNL (LSB)	±1 (Max)
Architecture	R-2R
Operating Temperature	-40°C ~ 85°C
Package / Case	16-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the MAX5123AEEE are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

12-bit resolution (Number of Bits)
Single DAC channel (Number of D/A Converters = 1)
Buffered voltage output configuration
SPI digital interface
External and internal reference capability
Identical supply voltage ranges (2.7V ~ 3.6V for both analog and digital)
Matching settling time performance (20µs typical)
Equivalent INL/DNL specifications (±1 LSB maximum)
R-2R architecture
Identical operating temperature range (-40°C ~ 85°C)
16-SSOP package with 0.154" width (3.90mm)
Surface mount configuration

Parts meeting all these criteria are classified as direct or parametric equivalents and are suitable for substitution in applications where the MAX5123AEEE is specified.

Parameter Comparison

Parameter	MAX5123AEEE	MAX5123AEEE+	MAX5121AEEE+
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Number of Bits	12	12	12
Number of D/A Converters	1	1	1
Output Type	Voltage - Buffered	Voltage - Buffered	Voltage - Buffered
Data Interface	SPI	SPI	SPI
Reference Type	External, Internal	External, Internal	External, Internal
Voltage - Supply, Analog	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Voltage - Supply, Digital	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Settling Time	20µs (Typ)	20µs (Typ)	20µs (Typ)
INL/DNL (LSB)	±1 (Max), ±1 (Max)	±1 (Max), ±1 (Max)	±1 (Max), ±1 (Max)
Architecture	R-2R	R-2R	R-2R
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SSOP (0.154", 3.90mm Width)	16-SSOP (0.154", 3.90mm Width)	16-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Not specified	Tube	Tube

Engineering Selection Recommendations

The MAX5123AEEE is classified as obsolete product status. Both substitute parts—MAX5123AEEE+ and MAX5121AEEE+—are active products with identical electrical and mechanical parameters to the original part.

MAX5123AEEE+ is the direct equivalent, maintaining the same base product number (MAX5123) with active product status and ROHS3 compliance. This part is the primary choice for direct substitution where supply continuity is required.

MAX5121AEEE+ is a parametric equivalent with a different base product number (MAX5121) but identical functional specifications across all critical parameters. This part is suitable for substitution where the base product number difference does not impact design requirements or documentation standards.

Both substitute parts feature ROHS3 compliance and REACH unaffected status, providing improved environmental and regulatory alignment compared to the obsolete original part. Packaging is specified as Tube for both substitutes, ensuring consistent handling and storage characteristics.

Frequently Asked Questions (FAQ)

Q: Can MAX5123AEEE+ be used as a direct replacement for MAX5123AEEE?

A: Yes. MAX5123AEEE+ is a direct equivalent with identical electrical and mechanical parameters. The primary differences are active product status and ROHS3 compliance. Pin configuration, package dimensions, and functional specifications are identical.

Q: What is the difference between MAX5123AEEE+ and MAX5121AEEE+?

A: Both parts are parametric equivalents with identical electrical specifications and package configuration. The difference is the base product number (MAX5123 versus MAX5121). All critical parameters—resolution, interface, supply voltage, settling time, and package—are identical. Selection between these parts depends on design documentation requirements and supplier availability.

Q: Are the substitute parts compatible with existing PCB layouts designed for MAX5123AEEE?

A: Yes. Both substitute parts use the 16-SSOP package with identical dimensions (0.154" width, 3.90mm). Pin configuration and spacing are compatible with existing surface mount layouts.

Q: What are the compliance differences between the original and substitute parts?

A: The MAX5123AEEE is RoHS non-compliant. Both substitute parts (MAX5123AEEE+ and MAX5121AEEE+) are ROHS3 compliant and REACH unaffected, providing improved environmental compliance for new production runs.

Q: Is the SPI interface identical across all three parts?

A: Yes. All three parts use SPI data interface with identical protocol specifications. Software and firmware implementations require no modification for substitution.

Q: Can these parts be used interchangeably in production?

A: Yes, within the constraints of your design documentation. MAX5123AEEE+ is the recommended direct substitute. MAX5121AEEE+ is suitable where base product number differences are acceptable. Both parts meet all electrical and mechanical requirements for functional equivalence.

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