CS5346-CQZ Equivalent & Substitute Parts

Part Overview

The CS5346-CQZ is a 24-bit audio ADC (Analog-to-Digital Converter) with 6 channels and 192 kHz sampling rate, manufactured by Cirrus Logic Inc. in a 48-LQFP surface mount package. This part is classified as obsolete, making identification of active equivalent components essential for new designs and production continuity. The CS5346-CQZ operates with dual supply voltages (3.3V and 5V) and uses a serial data interface for audio signal acquisition applications.

Substiute Parts

CS5346-CQZ

Cirrus Logic Inc.In Stock: 2809CS5346-CQZ Datasheet

Current PartRFQ

CS5346K-CQZ

Cirrus Logic Inc.In Stock: 1609CS5346K-CQZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5346-CQZ is determined by the following critical parameters:

• Channel Count: 6 channels (fixed requirement)
• Resolution: 24 bits (fixed requirement)
• Sampling Rate: 192 kHz (fixed requirement)
• Package: 48-LQFP (7x7) (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)
• Operating Temperature Range: -40°C to 85°C (fixed requirement)
• Compliance: ROHS3 Compliant, MSL 3 (168 Hours)

The CS5346K-CQZ qualifies as a direct substitute because it maintains identical channel count, resolution, sampling rate, package form factor, and operating temperature specifications. The primary distinction is the data interface protocol and supply voltage specifications, which are enhanced in the substitute part.

Parameter Comparison

Engineering Selection Recommendations

The CS5346K-CQZ is the manufacturer-recommended substitute for the obsolete CS5346-CQZ. Both parts maintain identical core audio acquisition specifications: 6-channel, 24-bit resolution at 192 kHz sampling rate in a 48-LQFP package. The CS5346K-CQZ is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts comply with ROHS3 requirements and carry identical MSL ratings. The CS5346K-CQZ provides enhanced data interface flexibility with I2C and SPI protocol support, compared to the serial interface of the original part. Supply voltage specifications are tighter in the substitute part, with defined ranges rather than nominal values.

For new designs or production transitions from the obsolete CS5346-CQZ, the CS5346K-CQZ is the appropriate selection based on manufacturer recommendation and active product status.

Frequently Asked Questions (FAQ)

Q: Can the CS5346K-CQZ directly replace the CS5346-CQZ in existing designs?

A: The CS5346K-CQZ maintains identical channel count, resolution, sampling rate, and package specifications. The primary design consideration is the data interface: the substitute supports I2C and SPI protocols, while the original uses serial interface. PCB layout compatibility is identical due to matching 48-LQFP package dimensions.

Q: What is the difference in supply voltage specifications?

A: The CS5346-CQZ accepts nominal 3.3V and 5V supplies. The CS5346K-CQZ specifies tighter voltage ranges: 3.13V to 3.47V for the 3.3V rail and 4.75V to 5.25V for the 5V rail. Existing power supply designs meeting these tighter specifications will operate both parts identically.

Q: Are there packaging differences between these parts?

A: Both parts use the 48-LQFP (7x7) surface mount package. The CS5346-CQZ is supplied in standard packaging, while the CS5346K-CQZ is supplied in Tray packaging. This affects handling and storage but does not impact electrical or mechanical compatibility.

Q: Why is the CS5346-CQZ classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. The CS5346K-CQZ represents the active equivalent in Cirrus Logic's current product portfolio, maintaining the same core functionality with enhanced interface flexibility.

Q: Are both parts RoHS compliant?

A: Yes, both the CS5346-CQZ and CS5346K-CQZ are ROHS3 compliant and carry identical MSL 3 (168 Hours) moisture sensitivity ratings.