DS1867-10 Equivalent & Substitute Parts

Part Overview

The DS1867-10 is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring programmable resistance control. This 10kΩ dual-circuit device features 256 taps with serial interface control and non-volatile memory, enabling precise electronic volume and gain adjustment in audio and instrumentation systems.

The DS1867-10 is classified as obsolete. Identifying suitable substitute components is essential for maintaining design continuity, ensuring component availability, and supporting long-term product lifecycle management in applications currently utilizing this device.

Substiute Parts

DS1867-10

Analog Devices Inc./Maxim IntegratedIn Stock: 9050DS1867-10 Datasheet

Current PartRFQ

MAX5487ETE+

Analog Devices Inc./Maxim IntegratedIn Stock: 272900MAX5487ETE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1867-10 is determined by the following critical parameters:

• Resistance Value: 10kΩ (exact match required)
• Circuit Count: 2 circuits (exact match required)
• Tap Count: 256 taps (exact match required)
• Memory Type: Non-Volatile (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Interface Protocol: Serial or SPI (compatible digital control interfaces)
• Supply Voltage Compatibility: Device must operate within or encompass the 5V supply requirement

The MAX5487ETE+ meets all critical functional parameters while offering enhanced specifications in supply voltage range, temperature coefficient, and compliance status. Interface compatibility is maintained through SPI protocol support, which is compatible with serial control architectures.

Parameter Comparison

Engineering Selection Recommendations

The MAX5487ETE+ is the qualified substitute for the DS1867-10 based on the following engineering criteria:

Functional Equivalence: Both devices provide identical core functionality—10kΩ dual-circuit digital potentiometers with 256 taps and non-volatile memory operation across the -40°C to 85°C temperature range.

Product Status: The MAX5487ETE+ maintains active production status with 272,800 units in stock, ensuring long-term availability and supply chain stability compared to the obsolete DS1867-10.

Compliance and Certifications: The MAX5487ETE+ is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The DS1867-10 is RoHS non-compliant, making the substitute the preferred choice for new designs and compliance-sensitive applications.

Supply Voltage Advantage: The MAX5487ETE+ operates across 2.7V to 5.25V, providing broader voltage compatibility while maintaining full 5V operation capability required by the original design.

Interface Compatibility: SPI protocol in the MAX5487ETE+ is compatible with serial control implementations through appropriate firmware adaptation.

Design Considerations: The transition from through-hole (14-DIP) to surface-mount (16-TQFN) packaging requires PCB layout modification. The MAX5487ETE+ exhibits superior temperature coefficient performance (35ppm/°C vs. 750ppm/°C), reducing thermal drift in precision applications.

Frequently Asked Questions (FAQ)

Q: Can the MAX5487ETE+ directly replace the DS1867-10 without firmware changes?

A: The MAX5487ETE+ uses SPI interface while the DS1867-10 uses serial interface. Both are digital control protocols; however, firmware adaptation is required to implement SPI command sequences. The functional outcome—resistance adjustment through digital control—remains equivalent.

Q: What are the packaging implications of switching from 14-DIP to 16-TQFN?

A: The DS1867-10 uses through-hole mounting (14-DIP), while the MAX5487ETE+ uses surface-mount technology (16-TQFN 3x3). PCB redesign is necessary, including footprint modification and reflow soldering process implementation. The 16-TQFN package occupies less board area.

Q: Are there supply voltage considerations when substituting?

A: The DS1867-10 requires exactly 5V supply. The MAX5487ETE+ operates across 2.7V to 5.25V, providing design flexibility. Existing 5V supply designs are fully compatible with the substitute.

Q: How do tolerance and temperature coefficient differences affect circuit performance?

A: The DS1867-10 specifies ±20% tolerance with 750ppm/°C temperature coefficient. The MAX5487ETE+ specifies ±25% tolerance with 35ppm/°C temperature coefficient. The substitute exhibits significantly lower thermal drift, improving stability across temperature extremes. Tolerance differences are within acceptable ranges for potentiometer applications.

Q: What is the wiper resistance difference between these devices?

A: The DS1867-10 has typical wiper resistance of 400Ω; the MAX5487ETE+ is 325Ω. This 75Ω difference may affect circuit impedance in high-impedance applications. Verify compatibility with existing load impedance specifications.

Q: Is the MAX5487ETE+ suitable for new designs?

A: Yes. The MAX5487ETE+ is active production status with ROHS3 compliance, making it the appropriate choice for new product development. The DS1867-10 obsolescence status makes it unsuitable for new designs.