DS1801S Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The DS1801S is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated, classified as a Data Acquisition component. This integrated circuit provides 45kΩ resistance with 65 taps across 2 circuits, utilizing a serial interface for control. The device features logarithmic taper and includes cascade pin, mute, and zero-cross sense capabilities.

The DS1801S is currently listed as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The availability of alternative configurations ensures continuity in applications requiring this functional specification.

Substiute Parts

DS1801S

Analog Devices Inc./Maxim IntegratedIn Stock: 2116DS1801S Datasheet

Current PartRFQ

DS1801S+

Analog Devices Inc./Maxim IntegratedIn Stock: 1160DS1801S+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1801S is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match identically to establish a valid substitute relationship:

• Resistance value: 45kΩ
• Number of circuits: 2
• Number of taps: 65
• Taper characteristic: Logarithmic
• Serial interface requirement
• Supply voltage range: 2.7V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package designation: 16-SOIC
• Surface mount configuration
• Feature set: Cascade Pin, Mute, Zero-Cross Sense

The DS1801S+ qualifies as a direct substitute based on complete parameter alignment across all electrical specifications and mechanical packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

The DS1801S is classified as obsolete, necessitating transition to available alternatives. The DS1801S+ provides complete functional and electrical equivalence while offering improved compliance status.

The DS1801S+ carries RoHS3 compliance certification, whereas the original DS1801S is RoHS non-compliant. Both parts maintain REACH Unaffected status and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

The DS1801S+ is designated as Last Time Buy, indicating limited future availability. Current inventory levels show 1059 units in stock compared to 2040 units of the original DS1801S.

Selection between these parts should prioritize regulatory compliance requirements and supply chain continuity planning.

Frequently Asked Questions (FAQ)

Q: Can the DS1801S+ directly replace the DS1801S in existing designs?

A: Yes. The DS1801S+ maintains complete electrical and mechanical equivalence across all specified parameters, including resistance value, tap configuration, interface type, voltage range, temperature range, and package designation. No design modifications are required.

Q: What is the primary difference between DS1801S and DS1801S+?

A: The DS1801S+ achieves RoHS3 compliance, whereas the DS1801S is RoHS non-compliant. Both parts are functionally identical. The DS1801S+ also carries Last Time Buy status, indicating reduced future availability.

Q: Are there packaging differences between these parts?

A: Both parts utilize 16-SOIC surface mount packaging with identical physical dimensions (0.295", 7.50mm width). The DS1801S+ is supplied in tube packaging, while the original DS1801S packaging specification is not detailed in the provided data.

Q: What does the product status "Last Time Buy" mean for the DS1801S+?

A: Last Time Buy designation indicates this is the final production run for this part number. Customers requiring this component should plan procurement accordingly, as future availability will be limited to existing inventory.

Q: Are the electrical characteristics identical between both parts?

A: Yes. Supply voltage range (2.7V ~ 5.5V), operating temperature range (-40°C ~ 85°C), tolerance (±20%), temperature coefficient (750ppm/°C), and all functional features remain identical across both part numbers.