DAC8802IPWG4 Equivalent & Substitute Parts

Part Overview

The DAC8802IPWG4 is a 14-bit digital-to-analog converter (DAC) with dual output channels, manufactured by Texas Instruments. This component features current-unbuffered output, SPI data interface, and external reference capability, designed for precision data acquisition applications requiring simultaneous dual-channel conversion. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Number of Bits	14
Number of D/A Converters	2
Settling Time	500ns (Typ)
Output Type	Current - Unbuffered
Data Interface	SPI
Reference Type	External
Voltage - Supply, Analog	2.7V ~ 5.5V
Voltage - Supply, Digital	2.7V ~ 5.5V
INL/DNL	±1 LSB (Max)
Operating Temperature	-40°C ~ 85°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the DAC8802IPWG4 is determined by the following critical parameters:

Resolution & Channel Count: 14-bit resolution with 2 D/A converters
Output Characteristics: Current-unbuffered output with SPI interface
Reference Configuration: External reference requirement
Electrical Specifications: Settling time of 500ns (Typ), INL/DNL of ±1 LSB (Max)
Supply Voltage Range: Analog and digital supply compatibility within 2.7V ~ 5.5V
Package Compatibility: 16-TSSOP surface mount package
Environmental & Compliance: Operating temperature range -40°C ~ 85°C, ROHS3 compliance

The AD5555CRUZ meets all critical substitution criteria, maintaining identical resolution, channel count, settling time, output type, data interface, and package specifications. Both components support external reference configuration and operate within overlapping temperature ranges.

Parameter Comparison

Parameter	DAC8802IPWG4 (Main)	AD5555CRUZ (Substitute)	Compatibility
Number of Bits	14	14	Identical
Number of D/A Converters	2	2	Identical
Settling Time	500ns (Typ)	500ns (Typ)	Identical
Output Type	Current - Unbuffered	Current - Unbuffered	Identical
Data Interface	SPI	SPI	Identical
Reference Type	External	External	Identical
INL/DNL (LSB)	±1 (Max)	±1 (Max)	Identical
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Identical
Package / Case	16-TSSOP	16-TSSOP	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Voltage - Supply, Analog	2.7V ~ 5.5V	5V	Overlapping (5V within range)
Voltage - Supply, Digital	2.7V ~ 5.5V	5V	Overlapping (5V within range)
Architecture	Multiplying DAC	R-2R	Different topology
Product Status	Discontinued at DiGi Electronics	Active	Substitute available
Moisture Sensitivity Level (MSL)	2 (1 Year)	1 (Unlimited)	Substitute superior

Engineering Selection Recommendations

The AD5555CRUZ is a direct functional equivalent for the DAC8802IPWG4 based on the following engineering criteria:

Electrical Equivalence: Both components share identical 14-bit resolution, dual-channel configuration, 500ns settling time, current-unbuffered output, SPI interface, and external reference architecture. INL/DNL specifications are identical at ±1 LSB (Max).

Package & Mounting: Both utilize 16-TSSOP surface mount packaging with identical physical dimensions (0.173", 4.40mm Width), enabling direct PCB footprint compatibility without layout modifications.

Supply Voltage Compatibility: The AD5555CRUZ operates at fixed 5V supply, which falls within the DAC8802IPWG4's 2.7V ~ 5.5V range. Designs currently operating at 5V supply voltage require no modification.

Compliance & Availability: The AD5555CRUZ maintains ROHS3 compliance and is currently in active production status with 1401 units in stock, addressing the discontinuation of the original part. The substitute exhibits superior moisture sensitivity characteristics (MSL 1 vs. MSL 2).

Architecture Consideration: While the DAC8802IPWG4 employs multiplying DAC architecture and the AD5555CRUZ uses R-2R topology, both achieve identical electrical performance specifications for the stated application parameters.

Frequently Asked Questions (FAQ)

Q: Can the AD5555CRUZ directly replace the DAC8802IPWG4 in existing designs?

A: Yes, for designs operating at 5V supply voltage. The AD5555CRUZ maintains identical pin configuration, package footprint, resolution, channel count, settling time, and output characteristics. No PCB modifications are required. Designs operating below 5V supply voltage require supply voltage adjustment to 5V.

Q: What is the difference between multiplying DAC and R-2R architecture?

A: Both architectures achieve the specified electrical performance for this application. The multiplying DAC (DAC8802IPWG4) and R-2R DAC (AD5555CRUZ) differ in internal topology but deliver identical settling time, linearity, and output specifications as provided in the parameter comparison.

Q: Are there any supply voltage limitations when substituting?

A: The AD5555CRUZ requires fixed 5V supply, whereas the DAC8802IPWG4 supports 2.7V ~ 5.5V. If your design operates at 5V, substitution is direct. Designs requiring operation below 5V must either adjust supply voltage or identify alternative parts with wider supply ranges.

Q: Is the 16-TSSOP package identical between both parts?

A: Yes. Both components use 16-TSSOP (0.173", 4.40mm Width) surface mount packaging with identical pinout and physical dimensions, ensuring direct footprint compatibility.

Q: What is the moisture sensitivity difference between these parts?

A: The DAC8802IPWG4 has MSL 2 (1 Year shelf life), while the AD5555CRUZ has MSL 1 (Unlimited shelf life). The AD5555CRUZ offers superior moisture resistance and longer storage capability without baking requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the DAC8802IPWG4 and AD5555CRUZ are ROHS3 compliant, meeting environmental and regulatory requirements for electronic components.

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