CS3511-CNZ Equivalent & Substitute Parts

Part Overview

The CS3511-CNZ is a Class D stereo amplifier IC manufactured by Cirrus Logic Inc., designed for 2-channel audio amplification applications. This device delivers 11.8W per channel at 6Ω load impedance and operates across a supply voltage range of 8.5V to 13.2V. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

CS3511-CNZ

Cirrus Logic Inc.In Stock: 1958CS3511-CNZ Datasheet

Current PartRFQ

PAM8006ATR

Diodes IncorporatedIn Stock: 35471PAM8006ATR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS3511-CNZ is determined by the following critical parameters:

Functional Equivalence Criteria:

• Amplifier topology: Class D stereo configuration
• Channel count: 2-Channel (Stereo) output
• Package form factor: 32-pin QFN with exposed pad
• Surface mount compatibility
• Thermal and short-circuit protection features
• Mute and shutdown functionality

Electrical Compatibility Criteria:

• Output power rating within acceptable range for target load impedance
• Supply voltage range overlap or compatibility with system design
• Operating temperature range suitable for application environment

The PAM8006ATR from Diodes Incorporated meets these substitution criteria as a Class D stereo amplifier with identical channel configuration, compatible package footprint, and overlapping electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The PAM8006ATR is a direct functional substitute for the CS3511-CNZ based on matching amplifier topology, stereo channel configuration, and package category. Both devices employ Class D amplification with identical protection mechanisms and control features.

Electrical Considerations:

The PAM8006ATR operates across a wider supply voltage range (8V ~ 18V) compared to the CS3511-CNZ (8.5V ~ 13.2V), providing enhanced flexibility for system designs. The substitute part maintains output power specifications suitable for stereo audio applications, with rated output of 10W per channel at 8Ω load impedance versus 11.8W per channel at 6Ω for the original part.

Compliance and Reliability:

The PAM8006ATR holds active product status with RoHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory alignment. The substitute part features superior moisture sensitivity rating (MSL 1 versus MSL 3), reducing handling and storage constraints during manufacturing.

Package Compatibility:

Both parts utilize 32-pin QFN packages with exposed thermal pads. The PAM8006ATR employs a 5x5mm footprint compared to the 6x6mm footprint of the CS3511-CNZ. PCB layout modifications are required to accommodate the different package dimensions.

Frequently Asked Questions (FAQ)

Q: Can the PAM8006ATR directly replace the CS3511-CNZ without PCB modifications?

A: The PAM8006ATR requires PCB layout changes due to different QFN package dimensions (5x5mm versus 6x6mm). Pin-to-pin compatibility exists, but footprint redesign is necessary.

Q: What is the impact of the different output power ratings?

A: The CS3511-CNZ delivers 11.8W per channel at 6Ω, while the PAM8006ATR delivers 10W per channel at 8Ω. Load impedance and system design parameters determine whether this power differential affects application performance.

Q: Are there supply voltage compatibility concerns?

A: The PAM8006ATR operates across 8V ~ 18V, encompassing the CS3511-CNZ range of 8.5V ~ 13.2V. Systems designed for the original part will operate within the substitute's specified voltage window.

Q: What are the implications of the MSL rating difference?

A: The PAM8006ATR MSL 1 rating eliminates moisture sensitivity constraints, simplifying component handling and storage compared to the CS3511-CNZ MSL 3 requirement of 168-hour floor life limitation.

Q: How do the protection features compare?

A: Both parts include short-circuit, thermal protection, mute, and shutdown functions. The PAM8006ATR adds depop functionality for audio quality enhancement during power transitions.

Q: What is the operating temperature range impact?

A: The PAM8006ATR supports -20°C ~ 85°C versus the CS3511-CNZ range of -10°C ~ 70°C, providing extended low-temperature operation and higher thermal margin for demanding environments.