Atheros Ar9285 Datasheet [new] Jun 2026

Connects to the balun, filters, and antenna switch. | Pin | Name | Description | |-----|------|-------------| | 49 | RFOUT_P | Main transmit output (positive) | | 50 | RFOUT_N | Main transmit output (negative) – often unused in single-ended designs | | 52 | LNA_IN | Low Noise Amplifier input from antenna | | 53 | ANT_SEL | Antenna selection for diversity (0 = main, 1 = aux) | | 47 | AUX_RFOUT | Auxiliary transmit (for external PA control) |

| | Value | | --- | --- | | Wireless Standard | IEEE 802.11n, IEEE 802.11g, IEEE 802.11b | | Frequency Range | 2.4 GHz | | Data Rate | Up to 300 Mbps (802.11n) | | Modulation | OFDM, QPSK, BPSK | | Transmit Power | Up to 20 dBm | | Receive Sensitivity | -92 dBm (typical) | | Interfaces | PCIe, USB, UART | | Package | Compact package | Atheros Ar9285 Datasheet

In the rapidly evolving world of wireless networking, few chipsets have demonstrated the longevity and reliability of the . While modern Wi-Fi 6 and 6E standards dominate today’s headlines, the AR9285 remains a significant piece of silicon history, found in millions of laptops, netbooks, and embedded systems produced between 2009 and 2014. Connects to the balun, filters, and antenna switch

The Atheros AR9285 remains a landmark in WLAN technology for its balance of performance and integration. By offering 802.11n speeds with a 1x1 architecture, it provided the industry with an affordable way to transition to higher-speed wireless standards without complex hardware requirements. If you'd like to dive deeper into this hardware: Specific for PCB design. Register descriptions for low-level programming. Driver installation guides for a specific OS. Tell me which technical detail you'd like to explore next. The Atheros AR9285 remains a landmark in WLAN

| Pin | Name | Description | |-----|------|-------------| | 2 | XTAL_IN | 40 MHz crystal input | | 3 | XTAL_OUT | 40 MHz crystal output | | 5 | RESET_L | Active-low hardware reset (internal 50k pull-up) |