QCA9561-AL3A-SR

Overview

The Qualcomm QCA9561-AL3A-SR is a dual-band 802.11n Wi-Fi and Bluetooth combo chip designed for high-performance wireless connectivity in mobile devices. It integrates an 802.11n MAC, baseband processor, and Bluetooth 4.0 controller with enhanced data rates (EDR) on a single die. The device supports 2x2 MIMO configurations for both WLAN and Bluetooth, enabling simultaneous operation without interference. It features integrated power amplifiers and low-noise amplifiers to optimize signal range and efficiency. The component utilizes a compact WLQFN package to facilitate space-constrained designs while maintaining robust thermal performance and regulatory compliance for global markets.

Feature Summary

• Integrated dual-mode solution combining 802.11n Wi-Fi and Bluetooth 4.0 EDR capabilities within a single silicon die.
• Supports 2x2 MIMO architecture for both wireless LAN and Bluetooth functions to maximize throughput and connection stability.
• Includes integrated RF front-end components such as power amplifiers and low-noise amplifiers for optimized signal integrity.
• Designed for simultaneous WLAN and Bluetooth operation with advanced coexistence mechanisms to prevent signal degradation.

Applications

• Smartphones and tablets requiring compact dual-band wireless solutions
• Mobile computing devices needing integrated Wi-Fi and Bluetooth connectivity
• Portable consumer electronics with space-constrained form factors

Procurement Notes

Verify the specific suffix AL3A-SR against official Qualcomm documentation to confirm pinout compatibility and revision level. Ensure that the procurement source provides valid traceability for this surface-mount component. Cross-reference the manufacturing date code with current supply chain availability to avoid obsolete stock. Confirm that the supplier adheres to standard handling procedures for sensitive semiconductor devices.

Selection Notes

Select this component when a system requires integrated 802.11n Wi-Fi and Bluetooth 4.0 functionality in a minimal footprint. It is suitable for applications prioritizing power efficiency and reduced bill-of-materials complexity by consolidating two radios into one package. Consider its 2x2 MIMO support if higher data rates and improved link reliability are required compared to single-stream alternatives.

Part Context

This part belongs to Qualcomm's legacy wireless connectivity portfolio, specifically targeting the transition period where integrated Wi-Fi and Bluetooth solutions became standard in mobile platforms. It represents a consolidation of separate radio chips into a single System-on-Chip approach, reducing board space and design complexity for manufacturers of smartphones and portable devices during the 802.11n era.

Replacement Considerations

Direct replacements may include other Qualcomm dual-band combo chips from the same generation, such as the QCA955x series, depending on specific antenna configuration and regulatory certification requirements. Verify pin-to-pin compatibility and firmware support before substituting with newer or older revisions.

FAQ

Does the QCA9561 support Wi-Fi 6?

No, the QCA9561 is an 802.11n (Wi-Fi 4) compliant device and does not support the newer Wi-Fi 6 standards.

What is the maximum number of spatial streams supported?

The chip supports 2x2 MIMO configurations for both Wi-Fi and Bluetooth, allowing for two spatial streams.