XN297LBW RF Transceiver Chip SOP-8

XN297LBW RF Transceiver Chip SOP-8 is a highly integrated, low-cost 2.4 GHz wireless transceiver integrated circuit designed for ultra-low power short-range wireless applications. This high-performance chip operates in the worldwide license-free ISM band, integrating an RF transceiver, a frequency synthesizer, a crystal oscillator, a power amplifier, and a modulator/demodulator into a single compact package. Consequently, it requires very few external passive components to build a complete wireless node, which significantly reduces manufacturing costs and PCB design complexity. Furthermore, the device incorporates advanced power management features to minimize power consumption in battery-powered gadgets. Therefore, you can easily integrate this chip into space-constrained wireless products like remote controls and toy quadcopters to establish a stable, high-speed data link.

Key Features:

• Worldwide 2.4 GHz Operation: Functions seamlessly within the global, license-free ISM frequency band from 2.400 GHz to 2.4835 GHz.
• High Data Rate Options: Supports programmable over-the-air data rates of 1 Mbps and 2 Mbps, allowing optimization for bandwidth or range.
• Ultra-Low Power Consumption: Features excellent power saving modes, drawing very low current during sleep and standby periods to prolong battery life.
• Embedded Baseband Protocol Engine: Includes automatic packet handling, auto-acknowledgment, and auto-retransmission capabilities, which reduces the processing load on the host microcontroller.
• Space-Saving Package: Housed in a standard 8-pin Small Outline Package (SOP-8) that simplifies automatic SMD assembly and reduces layout footprints.

Technical Specifications:

• Operating Frequency Range: 2400 MHz to 2483.5 MHz
• Modulation Format: GFSK (Gaussian Frequency Shift Keying)
• Programmable Output Power: Max +11 dBm (Configurable down to −20 dBm)
• Receiver Sensitivity: −88 dBm at 1 Mbps, −85 dBm at 2 Mbps
• Operating Voltage Range: 2.2 V to 3.6 V
• Digital Interface: 3-wire or 4-wire SPI-compatible interface
• Frequency Channels: Up to 126 non-overlapping channels

Mechanical Specifications:

• Package Type: SOP-8 (Surface Mount Device)
• Pin Count: 8 Pins
• Encapsulation Material: Molded Plastic Compound
• Lead Frame: Matte Tin-plated copper alloy leads

Dimensions:

• Body Length: ≈ 4.90 mm
• Body Width (Excluding leads): ≈ 3.90 mm
• Total Width (Including leads): ≈ 6.00 mm
• Pin Pitch: 1.27 mm (Standard SOP spacing)
• Total Package Thickness: ≈ 1.55 mm

Pinout and Wiring:

• Pin 1 (GND): Connect to the primary circuit ground plane.
• Pin 2 (VDD): Connect to a clean 3.3 V regulated DC power source.
• Pin 3 (DATA/MOSI): Connect to the SPI Master Output Slave Input data pin of the microcontroller.
• Pin 4 (SCK): Connect to the SPI Clock pin of the host microcontroller to synchronize data transfers.
• Pin 5 (CSN): Connect to the SPI Chip Select Not pin to enable or disable SPI communication.
• Pin 6 (CE): Chip Enable pin. Toggle this high or low to switch between active RF modes and standby.
• Pin 7 (MISO/IRQ): Connect to the SPI Master Input Slave Output or external interrupt pin of the MCU to handle data-ready flags.
• Pin 8 (ANT): Connect to the 2.4 GHz antenna circuit via a matching LC network to achieve maximum range.

Datasheet Reference:

• Download Panstrong XN297LBW Datasheet

Commonly Used in:

• Toy Remote Controllers: Providing the primary radio link for budget-friendly RC cars, drones, and boats.
• Wireless Peripherals: Powering cheap wireless mice, keyboards, and simple gaming controllers.
• Smart Home Devices: Transmitting data for basic wireless switches, status sensors, and remote alarms.

Applications:

• Short-Range Data Telemetry: Establishing point-to-point wireless data links for local industrial or hobbyist sensor monitoring.
• Wireless Keyless Entry: Transmitting security codes for garage door openers and automated access gates.
• Wireless Audio Controllers: Passing control signals and commands for wireless consumer audio systems.

Equivalent Models:

• nRF24L01+ (Nordic): A widely used 2.4 GHz transceiver offering similar GFSK modulation styles, however, register maps and pin configurations will differ.
• XN297L: The native sibling chip in alternative packaging configurations like QFN20, providing identical core RF functionality.
• BK2425 (Beken): Another low-cost Chinese 2.4 GHz transceiver chip that designers often substitute in toy applications.

Package Includes:

• 1 x XN297LBW RF Transceiver Chip SOP-8