DS1822Z Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The DS1822Z is a digital temperature sensor manufactured by Analog Devices Inc./Maxim Integrated, designed for local temperature measurement across the -55°C to 125°C range. This component operates via 1-Wire® protocol and is housed in an 8-SOIC surface mount package. The DS1822Z is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

DS1822Z

Analog Devices Inc./Maxim IntegratedIn Stock: 2259DS1822Z Datasheet

Current PartRFQ

DS1822Z+

Analog Devices Inc./Maxim IntegratedIn Stock: 2119DS1822Z+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1822Z is determined by strict equivalence across the following critical parameters:

• Sensor type classification (Digital, Local)
• Temperature measurement range (-55°C ~ 125°C)
• Communication protocol (1-Wire®)
• Supply voltage compatibility (3V ~ 5.5V)
• Resolution specification (11 bits)
• Accuracy tolerance (±2°C / ±3°C)
• Physical package format (8-SOIC)
• Functional feature set (Output Switch, Programmable Limit, Standby Mode)

Only components matching all these parameters across their full operating specifications qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The DS1822Z+ serves as the direct functional equivalent to the obsolete DS1822Z. Both components maintain identical electrical specifications, temperature operating range, communication protocol, and package format. The primary distinction is product lifecycle status: DS1822Z is obsolete while DS1822Z+ is active production.

The DS1822Z+ additionally provides ROHS3 compliance, whereas the DS1822Z is non-compliant. For applications subject to RoHS regulatory requirements, the DS1822Z+ is the appropriate selection. Both components share equivalent REACH status and ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can DS1822Z+ directly replace DS1822Z in existing designs?

A: Yes. The DS1822Z+ maintains identical electrical characteristics, temperature range, resolution, accuracy, and 1-Wire® protocol implementation. The 8-SOIC package dimensions are equivalent, enabling direct PCB-level substitution without circuit modification.

Q: What is the primary reason to transition from DS1822Z to DS1822Z+?

A: The DS1822Z is classified as obsolete. The DS1822Z+ is the active production equivalent, ensuring long-term component availability and supply chain continuity. Additionally, DS1822Z+ meets ROHS3 compliance standards.

Q: Are there packaging differences between these parts?

A: Both components use the 8-SOIC (0.154", 3.90mm Width) surface mount package. The DS1822Z is supplied in standard packaging, while DS1822Z+ is supplied in tube packaging. This does not affect electrical or mechanical compatibility.

Q: Do these sensors require different firmware or software support?

A: No. Both components implement identical 1-Wire® protocol specifications, feature sets (Output Switch, Programmable Limit, Standby Mode), and 11-bit resolution. Existing firmware and software interfaces require no modification.

Q: What is the inventory status for these parts?

A: DS1822Z inventory is 2200 pieces (new original stock). DS1822Z+ inventory is 2100 pieces (new original stock). For new designs, DS1822Z+ is recommended due to active product status.