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MAX548ACPA Equivalent & Substitute Parts
Part Overview
The MAX548ACPA is an 8-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications. This component features dual D/A converters with voltage output, SPI data interface, and supply-referenced architecture. The MAX548ACPA is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Number of Bits | 8 |
| Number of D/A Converters | 2 |
| Settling Time | 4µs (Typ) |
| Output Type | Voltage - Unbuffered |
| Data Interface | SPI |
| Reference Type | Supply |
| Voltage - Supply, Analog | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V |
| INL/DNL (LSB) | ±0.9 (Max) |
| Architecture | R-2R |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MAX548ACPA is determined by strict equivalence across the following critical parameters:
- Resolution: 8-bit conversion capability
- Converter Count: Dual D/A converter configuration
- Output Characteristics: Voltage-mode, unbuffered output
- Interface Protocol: SPI serial data interface
- Supply Architecture: Supply-referenced voltage generation
- Electrical Performance: Settling time of 4µs (Typ) and INL/DNL specification of ±0.9 LSB (Max)
- Package Form Factor: 8-DIP through-hole mounting (0.300", 7.62mm)
- Operating Range: 0°C to 70°C temperature specification
- Supply Voltage Compatibility: 2.5V to 5.5V dual supply operation
The MAX548ACPA+ represents a direct functional equivalent with identical electrical and mechanical specifications, differing only in product status and compliance certifications.
Parameter Comparison
| Parameter | MAX548ACPA | MAX548ACPA+ |
|---|---|---|
| Number of Bits | 8 | 8 |
| Number of D/A Converters | 2 | 2 |
| Settling Time | 4µs (Typ) | 4µs (Typ) |
| Output Type | Voltage - Unbuffered | Voltage - Unbuffered |
| Data Interface | SPI | SPI |
| Reference Type | Supply | Supply |
| Voltage - Supply, Analog | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| INL/DNL (LSB) | ±0.9 (Max) | ±0.9 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The MAX548ACPA+ is the direct substitute for the MAX548ACPA. Both components maintain identical electrical specifications and package form factors, ensuring functional interchangeability in circuit implementations.
The primary distinction between these parts is product lifecycle status and regulatory compliance. The MAX548ACPA is classified as obsolete, while the MAX548ACPA+ maintains active production status. Additionally, the MAX548ACPA+ achieves ROHS3 compliance, whereas the original MAX548ACPA is RoHS non-compliant. Both components maintain REACH Unaffected status and carry identical ECCN and HTSUS classifications.
For new designs and ongoing system support, the MAX548ACPA+ is the appropriate selection due to its active availability and enhanced regulatory compliance posture.
Frequently Asked Questions (FAQ)
Q: Can MAX548ACPA+ directly replace MAX548ACPA in existing circuits?
A: Yes. The MAX548ACPA+ provides complete functional equivalence with identical electrical performance, settling time, resolution, converter count, output characteristics, and package specifications. No circuit modifications are required for substitution.
Q: What is the significance of the product status difference?
A: The MAX548ACPA is classified as obsolete, indicating discontinued manufacturing and limited availability. The MAX548ACPA+ maintains active production status, ensuring reliable supply chain access and long-term component availability.
Q: How does RoHS compliance affect component selection?
A: The MAX548ACPA+ achieves ROHS3 compliance, meeting current environmental and regulatory requirements for electronic component manufacturing. The original MAX548ACPA is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the MAX548ACPA+ is the mandated selection.
Q: Are there packaging differences between these parts?
A: Both components utilize identical 8-DIP through-hole packaging (0.300", 7.62mm). The MAX548ACPA+ is supplied in tube packaging, while the original MAX548ACPA packaging specification is not provided. This distinction does not affect electrical or mechanical compatibility.
Q: What supply voltage range is supported?
A: Both the MAX548ACPA and MAX548ACPA+ operate with analog and digital supply voltages ranging from 2.5V to 5.5V, providing flexibility across multiple system voltage domains.
Q: Is the SPI interface identical between these components?
A: Yes. Both components implement identical SPI serial data interface protocols, ensuring software and firmware compatibility without modification.
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