MAX5121BEEE 12-Bit Digital to Analog Converter Equivalent & Substitute Parts

Part Overview

The MAX5121BEEE 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 operates across a 2.7V to 3.6V supply range. The MAX5121BEEE is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. Substitute parts must maintain identical electrical specifications, package configuration, and interface characteristics to ensure direct compatibility in existing circuit designs.

Key Parameters

Parameter	Specification
Number of Bits	12
Number of D/A Converters	1
Settling Time (Typical)	20µs
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
INL/DNL (LSB)	±2 (Max), ±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 MAX5121BEEE are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Primary Substitution Criteria:

12-bit resolution (Number of Bits)
Single DAC channel (Number of D/A Converters = 1)
20µs typical settling time
Voltage-buffered output type
SPI digital interface
External and internal reference capability
2.7V to 3.6V dual supply voltage range
±2 LSB maximum INL and ±1 LSB maximum DNL linearity
R-2R architecture
-40°C to 85°C operating temperature range
16-SSOP surface mount package (0.154", 3.90mm width)

All identified substitute parts maintain these exact specifications, ensuring functional and mechanical compatibility with designs originally specified for the MAX5121BEEE.

Parameter Comparison

Parameter	MAX5121BEEE	MAX5121BEEE+	MAX5123BEEE+
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active	Active
Number of Bits	12	12	12
Number of D/A Converters	1	1	1
Settling Time (Typical)	20µs	20µs	20µs
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
INL/DNL (LSB)	±2 (Max), ±1 (Max)	±2 (Max), ±1 (Max)	±2 (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
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

MAX5121BEEE+ (Direct Manufacturer Substitute)

The MAX5121BEEE+ is the primary substitute for the obsolete MAX5121BEEE. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The transition from the obsolete MAX5121BEEE to the MAX5121BEEE+ requires no circuit modifications and provides improved regulatory compliance for new production runs.

MAX5123BEEE+ (Parametric Equivalent)

The MAX5123BEEE+ is a parametric equivalent offering identical functional specifications and package configuration. This part is actively manufactured and ROHS3 compliant. Selection between MAX5121BEEE+ and MAX5123BEEE+ depends on base product number requirements and supplier availability, as both parts satisfy all electrical and mechanical substitution criteria.

Both substitute parts eliminate obsolescence risk while maintaining full compatibility with existing circuit designs specified for the MAX5121BEEE 12-bit DAC.

Frequently Asked Questions (FAQ)

Q: Can MAX5121BEEE+ and MAX5123BEEE+ be used interchangeably with MAX5121BEEE?

A: Yes. Both substitute parts maintain identical electrical specifications (12-bit resolution, 20µs settling time, SPI interface, 2.7V-3.6V supply range, ±2/±1 LSB linearity) and package configuration (16-SSOP surface mount). Direct substitution requires no circuit modifications.

Q: What is the difference between MAX5121BEEE+ and MAX5123BEEE+?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The primary difference is the base product number (MAX5121 versus MAX5123). Selection depends on design documentation requirements and supplier availability.

Q: Why is the original MAX5121BEEE classified as obsolete?

A: The MAX5121BEEE has reached end-of-life status. Active equivalents (MAX5121BEEE+ and MAX5123BEEE+) are available to support ongoing production and new designs.

Q: Are the substitute parts ROHS compliant?

A: Yes. Both MAX5121BEEE+ and MAX5123BEEE+ are ROHS3 compliant, whereas the original MAX5121BEEE is RoHS non-compliant. This provides improved regulatory compliance for applications subject to RoHS requirements.

Q: What packaging options are available for substitute parts?

A: Both substitute parts are supplied in 16-QSOP tube packaging, maintaining the same 16-SSOP (0.154", 3.90mm width) surface mount configuration as the original MAX5121BEEE.

Q: Are there any supply voltage or temperature range differences?

A: No. All three parts operate identically across 2.7V to 3.6V supply range and -40°C to 85°C operating temperature range.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message