NXH2265UK: NFMI Radio for Wireless Audio and Data Streaming

• Customer programmable Arm Cortex-M0 ultra low power, for system configuration and control
• I²C-bus/SPI follower control interface
• Flexible interfaces: UART, GPIO, SWD

• 596 kbit/s raw throughput
• Carrier frequency of 10.579 MHz
• On-chip tuning of coil resonator tank
• Programmable transmit power
• Integrated AGC
• Operation from internal oscillator
• Optimized protocol for low latency ear-to-ear communication
• Embedded network protocol for up to 15 devices

• I²S-bus audio interface
• Support for multiple audio sample frequencies up to 48 kHz
• Integrated MAC accelerator for MI radio
• Integrated audio G.722 codec for up to two audio channels
• Integrated latency controller for one RX channel
• Integrated adaptive sample rate converter for one RX channel Integrated CoolFlux DSP^® with SBC codec

• Integrated supply management based on a stable, fixed input supply

Supports multiple low-power modes, with typical current consumption:

• Power-down: 5 μA
• Sleep: 150 μA
• Carrier detect: 180 μA
• Mono audio streaming - receive: 1700 μA (fs = 16 kHz; G.722)
• Mono audio streaming - transmit: 1600 μA (fs = 16 kHz; G.722)
• Bidirectional audio streaming: 3000 μA (fs = 48 kHz; SBC)
• Support for flexible slot allocation of the radio enabling better power tuning over the different use cases
• Integrated ultra-low-power oscillator and timer used in low-power modes

• WLCSP40 with dimensions of 2.25 mm × 3.45 mm (7.76 mm2)
• Flexible I/O switch matrix with 19 pins
• Configurable supply level for I/O
• 40 bumps with a minimum pitch of 400 μm
• Backside coating