DS1845B-050 Equivalent & Substitute Parts

Part Overview

The DS1845B-050 is a digital potentiometer IC from Analog Devices Inc./Maxim Integrated, classified as a Data Acquisition component. This device features a 50kΩ resistance with dual circuits, 100/256 taps, and I2C interface control. The part is currently marked as Obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations.

Substiute Parts

DS1845B-050

Analog Devices Inc./Maxim IntegratedIn Stock: 1001DS1845B-050 Datasheet

Current PartRFQ

DS1845B-050+

Analog Devices Inc./Maxim IntegratedIn Stock: 824DS1845B-050+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1845B-050 is determined by strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Number of circuits: 2
• Tap configuration: 100, 256 taps
• Interface protocol: I2C
• Memory type: Non-Volatile
• Supply voltage range: 2.7V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package type: 16-CSBGA (4x4)
• Mounting configuration: Surface Mount

The DS1845B-050+ meets all these criteria and qualifies as a parametric equivalent. The primary distinction between the main part and its substitute is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DS1845B-050+ is the direct substitute for the obsolete DS1845B-050. Both parts are electrically and mechanically identical across all functional parameters. The DS1845B-050+ offers the advantage of Active product status, ensuring long-term availability and supply chain continuity. Additionally, the DS1845B-050+ carries ROHS3 compliance certification, whereas the original part is RoHS non-compliant. For new designs and ongoing production requiring environmental compliance, the DS1845B-050+ is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part functions identically within the specified electrical and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Are DS1845B-050 and DS1845B-050+ pin-compatible? A: Yes. Both parts use the 16-CSBGA (4x4) package with identical pinout and electrical characteristics.

Q: Can DS1845B-050+ replace DS1845B-050 in existing designs? A: Yes. The DS1845B-050+ is a direct parametric equivalent with identical resistance, tap configuration, interface protocol, and operating specifications.

Q: What is the primary difference between these parts? A: The DS1845B-050+ is an Active product with ROHS3 compliance, while the DS1845B-050 is Obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Does packaging differ between these parts? A: The DS1845B-050+ is supplied in Tray packaging, while the DS1845B-050 is supplied in Bulk packaging. Both contain the same die and are functionally equivalent.

Q: What supply voltage range do these parts support? A: Both parts operate across 2.7V to 5.5V supply voltage range, suitable for 3.3V and 5V logic systems.

Q: Are these parts suitable for -40°C to 85°C temperature environments? A: Yes. Both parts are rated for -40°C to 85°C operating temperature range with 750ppm/°C temperature coefficient.