Especificaciones
RTL8761ATV‑CG is a highly integrated dual-mode Bluetooth controller IC developed by Realtek Semiconductor, focusing on UART HCI host communication interface, integrating RF transceiver, baseband, link layer and protocol stack for 2.4G Bluetooth wireless connection.
Suffix Explanation
- RTL8761ATV: Core chip model with UART main interface, supporting classic Bluetooth BR/EDR and BLE dual-mode communication
- CG: Marking for QFN exposed pad surface mount package; factory standard packaging is tape-and-reel for automated SMT assembly
1. Core Wireless Protocol & RF Specifications
- Working frequency band: 2402MHz~2484MHz 2.4GHz ISM universal frequency band
- Bluetooth standard: Complies with Bluetooth 4.0 dual mode, backward compatible with V2.1+EDR, V3.0, V3.0+HS
- Supports simultaneous connection of BR/EDR classic Bluetooth and BLE low-power Bluetooth links
- Maximum transmit power reaches 10dBm, with built-in automatic frequency calibration and interference suppression circuit
- Supports mainstream profiles including A2DP audio transmission, HFP hands-free call, HID keyboard/mouse, SPP serial transparent transmission and BLE beacon broadcast
2. Electrical Power & Hardware Interface
- Operating supply voltage range: 1.8V ~ 3.6V, recommended typical working voltage 3.3V
- Main host communication interface: UART, default baud rate 115200bps
- Reserved peripheral interfaces: PCM digital audio interface, SPI, I2C and multi-function GPIO pins
- PCM interface supports master/slave mode switching, compatible with 8-bit A-law/μ-law and 16-bit linear audio formats, matching external audio codec for voice and music transmission
- Multiple configurable low-power sleep modes and fast wake-up mechanism to reduce quiescent power consumption for battery-powered devices
- Only an external 26MHz crystal oscillator is required to build the minimum peripheral circuit
3. Package & Mechanical Information
- Package type: QFN-32 with exposed thermal pad
- Outline dimension: 4.0mm × 4.0mm compact small-size packaging
- Moisture Sensitivity Level: MSL 3, reflow soldering must be completed within 168 hours after opening the moisture-proof vacuum package
- Bottom exposed pad optimizes heat dissipation during continuous RF transmission operation
4. Environmental & Compliance Standards
- Continuous operating ambient temperature range: -40 ℃ ~ +85 ℃
- Fully lead-free, halogen-free, RoHS and REACH compliant, free of restricted hazardous substances
- Conforms to mainstream wireless certification specifications such as CE and FCC for end-product certification
5. Typical Application Scenarios
Bluetooth audio modules for wireless earphones, portable Bluetooth speakers and car audio adapters Serial transparent transmission Bluetooth modules for industrial data acquisition and IoT sensor terminals Wireless keyboard, mouse, game controller and wearable smart device Bluetooth control units Bluetooth communication expansion boards for single-board computers, smart home equipment and small embedded systems Handheld testing instruments, anti-lost tags and low-power asset positioning Bluetooth modules
LXB Semicon supplies original Realtek RTL8761ATV‑CG UART interface dual-mode Bluetooth controller IC
