What is the PAN1770?
The PAN1770 is a Bluetooth 5 Low Energy (LE) module based on the nRF52840 single chip controller. The Bluetooth 5 features additionally a higher symbol rate of 2 Mbps using the high-speed LE 2M PHY or a significantly longer range using the LE coded PHY at 500 kb/s or 125 kb/s. Furthermore, the new LE advertising extensions allow for much larger amounts of data to be broadcast in connectionless scenarios. An output power of up to 8 dBm and the industry leading sensitivity of the nRF52840 in combination with the LE coded PHY make the module very attractive in applications, where a long range is required. In addition, the ultra-low current consumption of the PAN1770 makes the module an ideal choice for battery powered devices. With Cortex® M4F processor, 256 kB RAM and the build-in 1 MB flash memory the PAN1770 can easily be used in standalone mode, thereby eliminating the need for an external processor, saving complexity, space, and cost. The PAN1770 also supports Type 2 Near Field Communication (NFC A) for use in simplified pairing and payment solutions (external antenna required).
Why use external Antenna?
In many devices or applications, the radio waves emitted by the chip antenna can be blocked or reflected by the metallic housing. This makes it difficult to receive the radio signal from the outside.
This circumstance can be counteracted if the external antenna is mounted outside the housing. The PAN1770 makes it possible to easily attach an external antenna by cable through the uFL connector and thus redirect the radio waves outside the housing.
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