CS44800-CQZ Equivalent & Substitute Parts

Part Overview

The CS44800-CQZ is a fully integrated audio processor manufactured by Cirrus Logic Inc., designed for 8-channel pre-amplifier applications. This component features a 64-LQFP surface mount package with integrated I2C and SPI interfaces, operating across a 2.5V to 5V supply voltage range. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

CS44800-CQZ

Cirrus Logic Inc.In Stock: 1321CS44800-CQZ Datasheet

Current PartRFQ

STA309A13TR

STMicroelectronicsIn Stock: 18515STA309A13TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS44800-CQZ is determined by the following critical parameters:

• Channel Configuration: 8-channel architecture required for functional equivalence
• Package Type: 64-pin quad flat package (LQFP/TQFP) with 10x10mm footprint for PCB compatibility
• Interface Protocols: I2C and/or SPI support for system integration
• Supply Voltage Range: Operating voltage compatibility with existing power distribution
• Mounting Technology: Surface mount configuration for automated assembly compatibility
• Application Class: Audio processor specification for pre-amplifier functionality

The STA309A13TR from STMicroelectronics meets these substitution criteria through equivalent channel count, compatible package footprint, supported interface protocols, and surface mount configuration.

Parameter Comparison

Engineering Selection Recommendations

The STA309A13TR qualifies as a functional substitute based on the following engineering criteria:

Functional Equivalence: Both components provide 8-channel fully integrated audio processing with surface mount 64-pin packages featuring identical 10x10mm footprints, enabling direct PCB layout compatibility.

Interface Compatibility: The STA309A13TR supports I2C protocol common to both devices. The substitution of I2S for SPI requires firmware and interface circuit evaluation, as I2S is a standard audio serial interface widely implemented in audio processor applications.

Supply Voltage Consideration: The STA309A13TR operates within the 3V to 3.6V range, which overlaps with the CS44800-CQZ specification. System power distribution must be verified to operate within this narrower range.

Product Status Advantage: The STA309A13TR maintains active product status with STMicroelectronics, ensuring long-term availability, technical support, and supply chain continuity compared to the obsolete CS44800-CQZ.

Compliance Alignment: Both components share identical MSL ratings and REACH compliance status, maintaining equivalent handling and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the STA309A13TR directly replace the CS44800-CQZ without PCB modifications?

A: The 64-pin LQFP and TQFP packages share identical 10x10mm footprints and pin counts, allowing direct PCB placement. However, interface protocol differences (I2S vs. SPI) require firmware and signal routing verification before implementation.

Q: What is the impact of the narrower supply voltage range on the STA309A13TR?

A: The STA309A13TR operates between 3V and 3.6V, compared to the CS44800-CQZ range of 2.5V to 5V. System power supplies must be confirmed to operate within the 3V to 3.6V window. If the existing system requires operation below 3V or above 3.6V, this substitute is not suitable.

Q: Are there differences in thermal operating ranges between these components?

A: The STA309A13TR specifies -40°C to 125°C (TJ), exceeding the CS44800-CQZ range of -10°C to 70°C (TA). This provides enhanced thermal performance for applications requiring extended temperature operation.

Q: How do the Class D and Direct Digital Amplification specifications relate?

A: Both specifications describe audio amplification technologies. Class D represents a switching amplifier topology, while Direct Digital Amplification is a related implementation. Both are suitable for pre-amplifier applications with comparable performance characteristics.

Q: What is the significance of the MSL rating for both components?

A: Both components carry MSL 3 (168 Hours), indicating identical moisture sensitivity requirements. Storage and handling procedures must follow the same protocols for both parts.

Q: Is the STA309A13TR available in the same packaging format?

A: The STA309A13TR is supplied in Cut Tape (CT) and Digi-Reel® packaging, compared to the CS44800-CQZ standard packaging. Both formats are standard surface mount delivery methods compatible with automated assembly processes.