Design Files
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NXH2265UK: NFMI Radio for Wireless Audio and Data Streaming
The NxH2265 is an ultra-low-power wireless single-chip solution optimized for audio and data communication. It uses a magnetic induction radio to provide a robust, tightly contained body area network around each user. It uses Near Field Magnetic Induction (NFMI) for wireless audio and data streaming.
It offers a fully integrated Arm® Cortex®-M0-based control subsystem, a Magnetic Induction (MI) transceiver, an audio data path, a power management subsystem, and a set of standard interfaces.
The audio data path is based on hardware-accelerated audio processing blocks and is enhanced with a DSP. The integrated power management subsystem supports multiple power domains and requires a stable, fixed input supply.
The device is available in a Wafer-Level Chip-Scale (WLCSP) package.
Product Details
Features
Controller subsystem
- Customer programmable Arm Cortex-M0 ultra low power, for system configuration and control
- I²C-bus/SPI follower control interface
- Flexible interfaces: UART, GPIO, SWD
Magnetic induction transceiver
- 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
Audio data path
- 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
Power management subsystem
- Integrated supply management based on a stable, fixed input supply
Power 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
Supports multiple low-power modes, with typical current consumption:
Package
- 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
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