ANNA-B4 series - System integration manual
UBX-21000517 - R03
Contents
Page 9 of 74
C1-Public
1.5
Product description
ANNA-B4
Item
ANNA-B402 / ANNA-B412
Bluetooth version
5.1
Band support
2.4 GHz, 40 channels
Typical conducted output power
+8 dBm
Max radiated output power with internal antenna (EIRP)
+9 dBm
Max radiated output power with external antenna (EIRP)
+13 dBm (pending certification)
RX sensitivity (conducted)
-94 dBm
RX sensitivity, long range mode (conducted)
-103 dBm
Supported 2.4 GHz radio modes
Bluetooth Low Energy
IEEE 802.15.4 (ANNA-B402 only)
Proprietary 2.4 GHz modes (ANNA-B402 only)
Supported Bluetooth LE data rates
1 Mbps
2 Mbps
500 kbps
125 kbps
Module size
6.5 x 6.5 x 1.2 mm
Table 2: ANNA-B4 series characteristics summary
For more information about each module variant, see also the ANNA-B402
and ANNA-B412
data sheets.
1.6
Hardware options
ANNA-B402 and ANNA-B412 modules have identical hardware architecture and design. Both module
variants are based on the Nordic Semiconductor nRF52833 System on Chip (SoC).
1.7
Software options
ANNA-B4 modules are integrated with an Arm® Cortex®-M4 application processor with FPU, 512 kB
flash memory and 128 kB RAM.
The structure of any software running on either ANNA-B4 module variant includes the following
components:
•
Radio stack
•
Bootloader (optional)
•
Application
The fundamental differences in the software implantation of the two module variants include:
•
ANNA-B402 modules host the customer application and optional bootloader software, developed
using the Nordic SDK, in an open-CPU configuration on the module. See also
•
ANNA-B412 modules are pre-flashed with a secure bootloader and u-connectXpress software that
interfaces through an AT command interpreter to control customer application software running
on host MCUs. See also
•
Both module variants include the Nordic S140 SoftDevice Bluetooth Low Energy protocol stack
that supports GATT server and client, central and peripheral roles, and multidrop connections.