CS5381-KSZR Equivalent & Substitute Parts

Part Overview

The CS5381-KSZR is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Cirrus Logic Inc., designed for multi-channel data acquisition applications. This device features two differential input channels with simultaneous sampling capability, I2S digital interface, and internal voltage reference. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CS5381-KSZR

Cirrus Logic Inc.In Stock: 8277CS5381-KSZR Datasheet

Current PartRFQ

CS5381K-KSZR

Cirrus Logic Inc.In Stock: 1951CS5381K-KSZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5381-KSZR is determined by strict equivalence across the following critical parameters:

• Resolution: 24-bit conversion depth
• Sampling Rate: 216 kHz per second
• Channel Configuration: 2 differential input channels
• Digital Interface: I2S protocol compatibility
• Architecture: Sigma-Delta conversion topology
• Package: 24-SOIC surface mount form factor
• Reference: Internal voltage reference architecture

The CS5381K-KSZR qualifies as a direct manufacturer-recommended substitute, maintaining identical specifications across all functional and physical parameters while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The CS5381K-KSZR is the manufacturer-recommended substitute for the obsolete CS5381-KSZR. Both devices maintain identical functional specifications across resolution, sampling rate, channel configuration, and digital interface protocol. The substitute part offers active product status with current manufacturing support and supply chain availability.

Both parts maintain equivalent compliance certifications: ROHS3 compliance and REACH unaffected status. The substitute part is available in Tape & Reel packaging, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CS5381K-KSZR directly replace the CS5381-KSZR in existing designs?

A: Yes. Both parts share identical functional specifications including 24-bit resolution, 216 kHz sampling rate, 2 differential input channels, I2S interface, and 24-SOIC package. No circuit modifications are required for substitution.

Q: What is the primary difference between these two part numbers?

A: The CS5381-KSZR is obsolete with limited inventory. The CS5381K-KSZR is the active equivalent with current manufacturing support and improved supply availability.

Q: Are the supply voltage specifications identical?

A: The main part specifies fixed supply voltages (5V analog, 3.3V to 5V digital). The substitute part specifies voltage ranges (4.75V to 5.25V analog, 3.1V to 5.25V digital). Both operate within standard 5V and 3.3V supply domains used in typical applications.

Q: Is the 24-SOIC package identical for both parts?

A: Yes. Both parts use the same 24-SOIC surface mount package with 0.295" width (7.50mm). PCB footprints and assembly processes are directly compatible.

Q: What are the moisture sensitivity differences?

A: The main part specifies MSL 2 (1 Year storage). The substitute specifies MSL 3 (168 Hours storage). Both require standard moisture control during storage and handling per IPC standards.