MX7528SD Equivalent & Substitute Parts

Part Overview

The MX7528SD is an 8-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, featuring dual D/A converters with current-unbuffered output and parallel data interface. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The MX7528SD operates with external voltage references and supports analog and digital supply voltages ranging from 5V to 15V, making it suitable for precision measurement and control applications requiring 8-bit resolution conversion.

Substiute Parts

MX7528SD

Analog Devices Inc./Maxim IntegratedIn Stock: 972MX7528SD Datasheet

Current PartRFQ

TLC7528EN

Texas InstrumentsIn Stock: 1337TLC7528EN Datasheet

DirectRFQ

AD7528SQ

Analog Devices Inc.In Stock: 1279AD7528SQ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MX7528SD is determined by strict equivalence across the following critical parameters:

Core Functional Requirements:

• 8-bit resolution (Number of Bits = 8)
• Dual D/A converter configuration (Number of D/A Converters = 2)
• Current-unbuffered output type
• Parallel data interface
• External voltage reference capability
• Analog and digital supply voltage range: 5V ~ 15V
• R-2R architecture
• Through-hole mounting compatibility

Acceptable Variations:

• Package form factor: 20-CDIP and 20-DIP are mechanically and electrically compatible within the 0.300" (7.62mm) pitch specification
• INL/DNL specifications: Substitute parts may meet equal or superior linearity performance
• Operating temperature range: Substitute parts may support extended temperature ranges
• Product status and compliance certifications may differ

The two identified substitute parts meet all core functional requirements and maintain electrical compatibility with the MX7528SD within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

TLC7528EN (Texas Instruments): This substitute offers superior INL/DNL performance (±0.5 LSB versus ±1 LSB) and faster settling time (100ns). The component is ROHS3 compliant and maintains active product status. Operating temperature range is -40°C to 85°C, which is narrower than the MX7528SD but suitable for standard industrial applications. The 20-DIP package is mechanically compatible with through-hole PCB designs. This option is recommended for applications prioritizing linearity performance and regulatory compliance.

AD7528SQ (Analog Devices Inc.): This substitute maintains identical INL/DNL specifications (±1 LSB) and package form (20-CDIP), providing direct functional equivalence to the MX7528SD. The component is ROHS3 compliant and supports an extended operating temperature range (-55°C to 125°C), exceeding the original specification. Settling time is specified at 400ns. This option is recommended for applications requiring temperature range extension or when maintaining the original CDIP package format is preferred.

Frequently Asked Questions (FAQ)

Q: Can TLC7528EN and AD7528SQ be used interchangeably with MX7528SD?

A: Both substitute parts meet the core functional requirements for 8-bit dual D/A conversion with parallel interface and external reference capability. However, differences in settling time, operating temperature range, and package form must be evaluated against specific application requirements. PCB layout modifications may be necessary if switching between CDIP and DIP packages.

Q: What is the difference between 20-CDIP and 20-DIP packages?

A: Both packages maintain 0.300" (7.62mm) pitch and 20-pin through-hole configuration. CDIP (Ceramic DIP) and DIP (Plastic DIP) differ in material composition and thermal characteristics. CDIP typically offers superior reliability in high-temperature or harsh environments. Pin compatibility is maintained between the two package types for this component category.

Q: Are there temperature range limitations when substituting?

A: The MX7528SD operates from 0°C to 125°C. TLC7528EN operates from -40°C to 85°C, which does not cover the full upper temperature range of the original. AD7528SQ operates from -55°C to 125°C, fully covering the original range and extending to lower temperatures. Application temperature requirements must be verified before selection.

Q: What does INL/DNL specification mean for substitution?

A: INL (Integral Non-Linearity) and DNL (Differential Non-Linearity) measure conversion accuracy. TLC7528EN specifies ±0.5 LSB, which is superior to the MX7528SD and AD7528SQ at ±1 LSB. Superior specifications ensure better linearity but do not prevent substitution if the original ±1 LSB specification is acceptable for the application.

Q: Is RoHS compliance a substitution requirement?

A: The MX7528SD is RoHS non-compliant. Both substitute parts are ROHS3 compliant. If regulatory compliance is required for new designs or production, the substitute parts satisfy this requirement. Existing designs using the MX7528SD may continue operation without modification.

Q: What is settling time and why does it differ between substitutes?

A: Settling time is the duration required for the DAC output to stabilize after a digital input change. TLC7528EN settles in 100ns, while AD7528SQ requires 400ns. Applications requiring rapid output transitions benefit from faster settling time. If the application timing allows 400ns or greater settling time, both options are functionally equivalent.