u-blox ANNA-B402 BLUETOOTH® 5.1 Module (Open CPU)

u-blox ANNA-B402 BLUETOOTH® 5.1 Low Energy Module (Open CPU) combines Bluetooth 5.1, an embedded Arm® Cortex®-M4 Microcontroller with FPU, and an integrated antenna into a compact 6.5mm x 6.5mm System in Package (SiP). The ANNA-B402 Module is based on the Nordic Semiconductor nRF52833 chip. With 512kB flash and 128kB RAM, this device offers the necessary capacity for advanced applications developed with Open CPU architecture and the Nordic SDK. Wired interfaces like UART, USB, SPI, I²C, I2S, and GPIO are available to connect peripheral devices.

The ANNA-B402 Module supports the Bluetooth direction-finding features, Angle-of-Arrival (AoA) and Angle-of-Departure (AoD) for location applications. These features enable a more accurate location compared to only using the received signal strength. ANNA-B402 provides an extended communication range for a more reliable connection using Bluetooth Long Range. Alternatively, the Wirepas Mesh stack can be used to form large-scale industrial mesh networks.

In addition to Bluetooth low energy, support for ZigBee and Thread protocols is provided, as well as NFC.

The u-blox ANNA-B402 Bluetooth 5.1 Module comes with an internal chip antenna for ease of integration in the end-product, as well as an antenna pin for using an external antenna of choice. The ANNA-B402 is globally certified for use with the internal or external antenna. The module is industrial grade and qualified according to ISO 16750, supporting an extended temperature range of -40°C to +105°C.

Features

Ultra-compact SiP (6.5mm x 6.5mm x 1.2mm) with integrated antenna
Bluetooth 5.1, Bluetooth mesh, Bluetooth Long Range, Zigbee, and Thread
Direction finding support for indoor location

Powerful Open CPU architecture for customized applications
Extended temperature range up to +105°C
Global certification

Applications

Industrial automation
Smart buildings and cities
Low power sensors
Wireless-connected and configurable equipment
Point-of-sales

Health devices
Real-time Location, RTLS
Indoor positioning
Asset tracking
Wearables

Specifications

Nordic Semiconductor nRF52833 Chipset
Bluetooth 5.1 (Bluetooth Low Energy)
NFC-A tag support
8dBm maximum output power
Conducted sensitivity

-94dBm (1Mbit/s)
-103dBm (125Kbit/s)

Max radiated output power (EIRP)

Internal antenna: 9dBm
External antenna: 11dBm

Maximum range

Internal antenna: 600 meters
External antenna: 700 meters

1.7V to 3.6V_DC power supply
Power consumption

Active TX @ 0dBm: 6.0mA
Active TX @ +8dBm: 15.5mA
RX only: 6.0mA
Standby: 1.3µA
Sleep: 600nA (with wake-up on an external event)

-40°C to +105°C operating temperature range
5% to 90% relative humidty (non-condensing)
6.5mm x 6.5mm x 1.2mm LGA-56 package; <0.1g
Machine mountable
Certifications: Europe (ETSI RED); US (FCC/CFR 47 part 15unlicensed modular transmitter approval); Canada (IC RSS); Japan (MIC); Taiwan (NCC); South Korea (KCC); Australia / New Zealand (ACMA); Brazil (Anatel); South Africa (ICASA)
Health and safety: EN 62479, EN 62368-1, IEC 62368-1

Open CPU

Development environment: Nordic SDK (including Bluetooth Mesh HomeKit, AirFuel, IoT, Thread, Zigbee)
Bluetooth

GATT server and client
Beacons
2Mbit/s modulation
1Mbit/s modulation
500Kbit/s modulation long-range functionality
125Kbit/s modulation long-range functionality
Advertising extensions

Hardware interfaces (Not all simultaneously)

2x UART
4x SPI
33x GPIO pins
8x ADC channels
1x USB
2x I²C
1x I²S
4x PWM
1x QDEC

Security

Secure boot ready
Secure Simple Pairing
128-bit AES encryption
Bluetooth low energy secure connections

Resources

Datasheet
Product Summary

System Integration Manual
Antenna Integration

u-blox ANNA-B402 BLUETOOTH® 5.1 Module (Open CPU)

Features

Applications

Specifications

Resources

Block Diagram

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