DS1845B-010+ Equivalent & Substitute Parts

Part Overview

The DS1845B-010+ is a dual-channel digital potentiometer with non-volatile memory manufactured by Analog Devices Inc./Maxim Integrated. This integrated circuit provides 10kΩ resistance with 100 and 256 tap configurations, controlled via I2C interface. The device is classified as active product status and is suitable for applications requiring programmable resistance adjustment with persistent memory retention. Substitute parts are identified when equivalent electrical specifications, memory characteristics, and interface protocols align with the original component requirements.

Substiute Parts

DS1845B-010+

Analog Devices Inc./Maxim IntegratedIn Stock: 1036DS1845B-010+ Datasheet

Current PartRFQ

DS1845B-010+

Analog Devices Inc./Maxim IntegratedIn Stock: 1036DS1845B-010+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1845B-010+ is determined by strict equivalence across the following critical parameters:

Resistance value must be 10kΩ. Dual-channel configuration (2 circuits) is mandatory. I2C interface protocol is required for control and communication. Non-volatile memory type must be present to preserve settings across power cycles. Supply voltage range must encompass 2.7V to 5.5V operation. Linear taper characteristic must be maintained. Surface mount packaging with 16-LBGA or CSPBGA case style is required. Operating temperature range must support -40°C to 85°C. Tap count configuration of 100 and 256 taps must be available.

Parts meeting all these parameters are classified as parametric equivalents. Parts deviating from any single parameter are not suitable substitutes for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The DS1845B-010+ maintains active product status with ROHS3 compliance and REACH unaffected classification. Selection of substitute components must preserve these regulatory certifications. The device is suitable for applications requiring I2C-controlled resistance adjustment in the 2.7V to 5.5V supply range. Moisture sensitivity level 3 (168 hours) requires appropriate handling and storage protocols during assembly and deployment. The ±20% tolerance and 750ppm/°C temperature coefficient define the precision characteristics applicable to circuit design calculations.

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the DS1845B-010+? A: A substitute must match all critical parameters: 10kΩ resistance, dual-channel configuration, I2C interface, non-volatile memory, 2.7V–5.5V supply range, linear taper, 16-LBGA/CSPBGA package, -40°C to 85°C operating temperature, and 100/256 tap availability.

Q: Can I use a single-channel digital potentiometer as a substitute? A: No. The DS1845B-010+ is a dual-channel device. Single-channel alternatives do not meet the circuit configuration requirement.

Q: Does the package type affect substitution eligibility? A: Yes. The 16-LBGA and CSPBGA package styles are specified. Alternatives with different package geometries or pin counts are not direct substitutes.

Q: What is the significance of the I2C interface requirement? A: The I2C protocol is the control mechanism for this device. Substitutes must support identical I2C communication to ensure firmware and hardware compatibility without modification.

Q: Is non-volatile memory essential for substitution? A: Yes. Non-volatile memory preserves potentiometer settings across power cycles. Volatile alternatives cannot fulfill this functional requirement.

Q: How does the ±20% tolerance affect circuit design? A: The tolerance defines the acceptable resistance variation from the nominal 10kΩ value. Circuit designs must account for this range in calculations.

Q: What does Moisture Sensitivity Level 3 mean for handling? A: MSL 3 (168 hours) specifies the maximum time the component can be exposed to ambient conditions before soldering. Proper storage in dry environments is required.