MAX544ACSA 14-Bit Digital to Analog Converter Equivalent & Substitute Parts

Part Overview

The MAX544ACSA is a 14-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 an 8-SOIC surface mount package with SPI data interface and external reference capability.

The MAX544ACSA is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Specification
Resolution	14 Bits
Number of D/A Converters	1
Output Type	Voltage - Unbuffered
Data Interface	SPI
Reference Type	External
Settling Time	1µs (Typ)
INL/DNL	±0.15 LSB / ±0.15 LSB
Architecture	R-2R
Voltage Supply - Analog	5V
Voltage Supply - Digital	5V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the MAX544ACSA are qualified based on the following critical parameters that determine functional compatibility:

14-bit resolution
Single D/A converter configuration
Voltage output, unbuffered topology
SPI serial data interface
External reference input
R-2R converter architecture
8-SOIC surface mount package
1µs typical settling time
±0.15 LSB INL/DNL specifications

Substitute parts must maintain identical or superior electrical performance across these parameters to ensure direct functional replacement without circuit redesign.

Parameter Comparison

Parameter	MAX544ACSA	MAX544ACSA+	MAX544BCSA+	AD5551BRZ
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active
Resolution (Bits)	14	14	14	14
Number of D/A Converters	1	1	1	1
Output Type	Voltage - Unbuffered	Voltage - Unbuffered	Voltage - Unbuffered	Voltage - Unbuffered
Data Interface	SPI	SPI	SPI	SPI
Reference Type	External	External	External	External
Settling Time (Typ)	1µs	1µs	1µs	1µs
INL/DNL (LSB)	±0.15 / ±0.15	±0.15 / ±0.15	±0.15 / ±0.15	±0.15 / ±0.15
Architecture	R-2R	R-2R	R-2R	R-2R
Voltage Supply - Analog	5V	5V	5V	2.7V ~ 5.5V
Voltage Supply - Digital	5V	5V	5V	2.7V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Not specified	Tube	Tube	Tube

Engineering Selection Recommendations

MAX544ACSA+ (Direct Manufacturer Upgrade)

The MAX544ACSA+ is the direct successor to the MAX544ACSA, maintaining identical electrical specifications and package configuration. This part is currently in active production status with ROHS3 compliance certification. Selection of MAX544ACSA+ is recommended for applications requiring exact parameter matching with improved supply chain availability and regulatory compliance.

MAX544BCSA+ (Parametric Equivalent)

The MAX544BCSA+ provides identical electrical performance and package specifications to the MAX544ACSA. This part is in active production status with ROHS3 compliance. The MAX544BCSA+ variant represents an alternative within the MAX544 product family with equivalent functional capability.

AD5551BRZ (Manufacturer Recommended Alternative)

The AD5551BRZ is the manufacturer-recommended alternative from Analog Devices Inc., offering identical core electrical specifications and 8-SOIC package configuration. This part provides extended operating temperature range (-40°C ~ 85°C) and wider supply voltage tolerance (2.7V ~ 5.5V) compared to the MAX544ACSA. The AD5551BRZ is in active production status with ROHS3 compliance certification. Selection of AD5551BRZ is appropriate for applications requiring enhanced temperature performance or flexible supply voltage operation.

Frequently Asked Questions (FAQ)

Q: Can MAX544ACSA+ be used as a direct replacement for MAX544ACSA?

A: Yes. The MAX544ACSA+ maintains identical electrical specifications, settling time, resolution, output type, data interface, and 8-SOIC package configuration. The primary difference is product status (active vs. obsolete) and RoHS compliance certification.

Q: What is the difference between MAX544BCSA+ and MAX544ACSA+?

A: Both parts share identical electrical specifications, package type, and performance parameters. The designation difference reflects variant classification within the MAX544 product family. Both are in active production status with ROHS3 compliance.

Q: When should AD5551BRZ be selected over MAX544ACSA+?

A: The AD5551BRZ should be selected when applications require extended operating temperature range (-40°C ~ 85°C) or flexible supply voltage operation (2.7V ~ 5.5V). For applications operating within 0°C ~ 70°C and fixed 5V supply, MAX544ACSA+ provides equivalent performance.

Q: Are all substitute parts available in 8-SOIC package?

A: Yes. All substitute parts listed are supplied in 8-SOIC (0.154", 3.90mm Width) surface mount package configuration, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: What is the significance of RoHS compliance for substitute selection?

A: The MAX544ACSA is RoHS non-compliant, while all substitute parts (MAX544ACSA+, MAX544BCSA+, AD5551BRZ) are ROHS3 compliant. For applications subject to RoHS regulatory requirements, substitute parts provide necessary compliance certification.

Q: Do all parts support SPI data interface?

A: Yes. All listed parts utilize SPI serial data interface with external reference input, maintaining identical communication protocol and circuit interface requirements.

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