MX7520SD Equivalent & Substitute Parts

Part Overview

The MX7520SD is a 10-bit digital-to-analog converter manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring current output with external reference capability. The device features parallel data interface, R-2R architecture, and operates across industrial temperature ranges. The MX7520SD is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

MX7520SD

Analog Devices Inc./Maxim IntegratedIn Stock: 944MX7520SD Datasheet

Current PartRFQ

AD7533SQ

Analog Devices Inc.In Stock: 1308AD7533SQ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MX7520SD is based on strict equivalence across the following critical parameters:

• Resolution: 10-bit conversion capability
• Converter Count: Single D/A converter per package
• Output Configuration: Current output, unbuffered, with differential capability
• Data Path: Parallel interface for digital input
• Reference Architecture: External reference requirement
• Converter Topology: R-2R resistor ladder network
• Supply Voltage Ranges: Dual supply rails (analog and digital) within 5V to 15V
• Temperature Operating Range: Full industrial range (-55°C to 125°C)
• Physical Form Factor: 16-pin CDIP package with through-hole mounting
• Regulatory Compliance: ROHS3 compliance and MSL Level 1

The AD7533SQ meets all these criteria and is classified as an active product, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The AD7533SQ is the direct functional equivalent for MX7520SD replacement. Both devices share identical electrical specifications across resolution, output configuration, supply voltage requirements, and operating temperature range. Both are packaged in 16-pin CDIP form factor with through-hole mounting, enabling direct board-level substitution without layout modifications.

The AD7533SQ offers superior performance characteristics: DNL specification of ±1 LSB maximum compared to the MX7520SD's ±9 LSB maximum, and settling time of 800ns versus 500ns. These differences represent improved linearity and acceptable timing performance for most data acquisition applications.

Product status transition from obsolete (MX7520SD) to active (AD7533SQ) ensures sustained component availability, manufacturer support, and compliance with current regulatory standards. Both devices maintain ROHS3 compliance and MSL Level 1 rating, confirming suitability for standard manufacturing and storage environments.

Frequently Asked Questions (FAQ)

Q: Can AD7533SQ directly replace MX7520SD in existing designs?

A: Yes. Both devices are 10-bit DACs with identical pin counts (16-CDIP), supply voltage ranges (5V to 15V), operating temperature range (-55°C to 125°C), and output configurations (current output, unbuffered, differential). No circuit modifications are required for substitution.

Q: What are the differences in settling time between these parts?

A: MX7520SD specifies 500ns typical settling time, while AD7533SQ specifies 800ns. This 300ns difference is acceptable for most parallel-interface DAC applications. System timing requirements should be evaluated against the AD7533SQ specification.

Q: How do the linearity specifications compare?

A: MX7520SD specifies INL/DNL of ±9 LSB maximum, while AD7533SQ specifies DNL of ±1 LSB maximum. The AD7533SQ provides superior differential nonlinearity performance, resulting in improved conversion accuracy.

Q: Are both devices RoHS compliant?

A: Yes. Both MX7520SD and AD7533SQ are ROHS3 compliant and carry MSL Level 1 rating, confirming compatibility with standard manufacturing processes and storage conditions.

Q: Why is MX7520SD classified as obsolete?

A: Obsolescence reflects end-of-life status from the manufacturer. The AD7533SQ, as an active product from Analog Devices Inc., provides continued availability and manufacturer support for equivalent functionality.

Q: Are there any package differences between these devices?

A: No. Both devices use 16-pin CDIP packaging with 0.300" (7.62mm) body dimensions and through-hole mounting. PCB footprints are identical.