BT833AF, nRF52811 Long Range Bluetooth 5.1 Module
BT833AF is a Bluetooth Low Energy, BLE 5.1 module using Nordic nRF52811 SoC with an integrated high performance PCB trace antenna.
Size of module is 15x20.8x1.9mm. It has 16 castellated pins for applications needing limited number of GPIOs. Additional 24 LGA (Land Grid Array) pins provide access to all nRF52810 GPIO pins.
Basing on nRF52811, BT833AF is a lower cost alternative to BT833F, an nRF52833 module to be released in 3Q 2019.
BT833AF is pin to pin compatible with BT832AF, an nRF52810 module. Three main differences:
Supports BLE 5.1 Direction Finding.
Supports BLE 5 CODY PHY at 500 Kbps and 125 Kbps for longer range
Supports Thread and Zigbee radio protocols.
Nordic nRF52811 QFAA with ARM Cortex M4 (no Floating Point Unit)
192 KB flash, 24 KB RAM
Complete RF solution with integrated antenna
Bluetooth range, estimated: 760 meters at 1Mbps and 1500 meters at 125 Kbps with at least 60% Fresnel zone clearance.
128-bit AES HW encryption
Serial Wire Debug (SWD)
Nordic SoftDevice Ready
Over-The-Air (OTA) firmware update
Up to 32 GPIOs, firmware configurable and Peripherals
12 bit/200KSps ADC, 8 configurable channels with programmable gain
64 level comparator
15 level low power comparator with wake-up from system OFF mode
3x 4-channel pulse width modulator (PWM) units with EasyDMA
Digital microphone interface (PDM)
5x 32 bit timers with counter mode
Up to 3x SPI Master/Slave with Easy DMA
Up to 2x I2C compatible 2-wire master/slave
I2S with EasyDMA
UART (CTS/RTS) with EasyDMA
Programmable peripheral interconnect (PPI)
Quadrature Demodulator (QDEC)
AES HW encryption with EasyDMA
Autonomous peripheral operation without CPU intervention using PPI and Easy DMA
3x real time counter (RTC)
Operation voltage: 1.7V to 3.6V
Peak current: 4.6 mA RX, 4.6 mA TX at 0 dBm.
0.3 uA OFF mode, 1.1 uA idle
RX sensitivity: -97 dBm
TX power: -20 to +4 dBm in 4 dB steps
Operation Temperature: -40°C to +85°C
Integrated shield to resist EMI
Evaluation board: EV-BT833AF
Availability: sample in April 2019
IC (Industrial Canada) ID:
Evaluation Board EV BT833AF
Please contact Fanstel for volume discount and production lead time.