PAN1781 - Bluetooth® 5.1 IoT Module


The Bluetooth 5 features as the LE coded PHY for an elongated range or the high speed 2M PHY are supplemented by the support of angle of arrival (AoA) and angle of departure (AoD) direction finding using Bluetooth. An output power of up to 8 dBm and the high sensitivity of the nRF52820 in combination with the LE coded PHY make the module very attractive in applications, where a long range is required. It also supports Bluetooth mesh, Thread and Zigbee mesh protocols.

A 128-bit AES/ECB/CCM/AAR co-processor may be used for on-the-fly packet the PAN1781 provides advanced wireless connectivity in a small package, smart home, industrial and much more applications.

Technical Specification


Performance characteristics

Order number ENW89857A1KF
Production status Pre-production
RF category Bluetooth® 5 Low Energy, IEEE® 802.15.4
Software/profile SDK by Nordic Semiconductor
Used IC nRF52820
Rx sensitivity -95 dBm @1Mb/s,-103 dBm @125kb/s
Tx power max +8 dBm
Antenna option Ceramic Antenna
Size (l x w x h) [mm] 15.6 x 8.7 x 2.0
Power supply [V] 1.7 to 5.5
Power consumption Tx 4.9 mA @0dBm (3.3V)
Power consumption Rx 4.7 mA (3.3V)
Power consumption sleep <1 µA
Interfaces GPIO, UART, SPI, I2C, COMP, QDEC, nRESET, USB2.0,...
Microcontroller ARM® Cortex®-M4
Memory 256kB Flash and 32kB RAM
Speciality Supports AoA and AoD direction finding via Bluetooth
Evaluation board ENW89857AXKF 
Evaluation kit ENW89857AWKF 
Certification EU CE RED / FCC / IC under preparation
Operating temperature -40 to +85 °C
Standard packaging QTY 1500 pcs

Evaluation Boards

ENW89854AXKF - PAN1780 Evaluation Board.

PAN1781 - evaluation boards

Order-No. ENW89857AWKF

Two PAN1781 Evaluation Boards packed in a case. The PAN1781 Boards enable quick prototyping and Software testing.

PAN1781 - Single Evaluation Board

Order-No. ENW89857AXKF

One single PAN1781 Evaluation Board.

For hardware design requirements and a getting started please have a look at the Module Integration Guide. It is intended to support the easy integration of the module into a product and to ensure the compliance with regulatory requirements.


Name File Type Size Date Language
PDF Modules for a wireless world Whitepaper 795.3 KB 24.07.2020 English
PDF Moving forward with Bluetooth Low Energy Whitepaper 1.2 MB 24.07.2020 English
PDF WM PAN1781 Migration Guide Manual 391.3 KB 09.02.2021 English
PDF WM PAN1781 Product Flyer Flyer 177 KB 09.02.2021 English
PDF WM PAN1781 Product Spec PRELIMINARY Data sheet 1 MB 09.02.2021 English
PDF WM REACh Environmental, REACh 602.4 KB 25.08.2020 English
PDF WM RoHS Environmental, RoHS 602.4 KB 25.08.2020 English
PDF Wireless Connectivity Product Leaflet Flyer, Leaflet 1.8 MB 11.05.2021 English