CSR8311 is a product of Qualcomm Technologies, Inc., and/or its subsidiaries.
Bluetooth
Bluetooth Version: Bluetooth 4.1
Bluetooth Technology: Bluetooth Low Energy, Dual-mode Bluetooth
Maximum Output Power: 9.5dBm transmitter
Bluetooth Radio: 50Ω, -92.5dBm receiver sensitivity
Class Support: Class 3, Class 2, Class 1
USB
USB Version: USB 2.0
General Audio
Digital Microphone Input: 2 digital mics
Interface
Supported Interfaces: I²S, PCM, UART, USB 2.0
Package
Package Type: QFN, 6 x 6 x 0.9 mm 0.5 mm pitch QFN
Pitch: 0.5mm Pitch