Specifications

Antenna Type
MHF4 connector
Chipset (Wireless)
Nordic nRF5340
Frequency
2.4 GHz
Interfaces - General
USB, UART, QSPI, SPI, I2S, I2C, PDM, PWM, ADC, GPIO, QDEC, Comparator, Low Power Comparator
Packaging
Tape/Reel
Product Type
Embedded Module
Software
Zephyr RTOS, Nordic nRF Connect SDK
System Architecture
Hostless
Technology
Bluetooth 5.2

Documentation

Name Part Type Last Updated
Product Brief - BL5340PA Series 453-00076R Product Brief 02/15/2023
Datasheet - BL5340PA Series 453-00076R Datasheet 08/17/2023

Buy Now

Distributor Part In Stock Region Buy
DigiKey 453-00076R 1936 North America Buy Now
Mouser 453-00076R 922 North America Buy Now


FAQ

Is the nRF Connect SDK Used for developing applications on the BL5340PA?

The BL5340PA must be used with the Laird Connectivity fork of the Nordic nRF Connect SDK (Zephyr) found at https://github.com/LairdCP/bl5340pa_manifest. The front-end module (FEM) driver limits the RF power output to be compliant with radio regulatory certifications achieved for the BL5340PA. The RF TX power tables are hardcoded in the driver.

Refer to section 6.2.4 BL5340PA Certified TX Power Per Regulatory Region and Hardware Variant for details.

 

Can I use your FEM driver for BL5340PA to change gain value on the nrf21540?

We don't currently support changing the gain of the FEM to lower power with an API. This is not supported in the Nordic driver. The FEM has two calibrated gain settings - one that achieves 20 dBm output and one that achieves 10 dBm output (both with 0 dBm input). However, you can change the output power level as discussed in the following FAQ.

 Can I lower the TX Power on the BL5340 from the maximum set by the FW? (lairdconnect.com)

 

Can I lower the TX Power on the BL5340 from the maximum set by the FW?

The power level can lowered at compile time by changing CONFIG_BT_CTLR_TX_PWR_ANTENNA from 20 to x. Power is split into two pieces (nrf53 + FEM).  Most of the granularity in power steps of the nRF53 is used obtain the output required for RF compliance. Therefore, the granularity of any further reductions in output power is limited.

 

For example, for TX Power = 12, this value is specified via CONFIG_BT_CTLR_TX_PWR_ANTENNA and the driver will try to get as close as it can.

 

The nRF5340 SoC output power has granularity of 0, -1, -2, -3, -4, -5, -6, -7, -8, -12, -16, -20, -40. However, 0 to -8 may already be used to achieve compliance for 20 dBm output at the antenna.