PAN1781 (nRF52820)


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 New Product Introduction
RF category Bluetooth® 5 Low Energy, IEEE® 802.15.4
Software/profile Nordic SDK5
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, USB2.0, QDEC
Microcontroller ARM® Cortex®-M4
Memory 256kB Flash and 32kB RAM
Speciality Supports AoA and AoD direction finding via Bluetooth
Evaluation board ENW89857AXKF 
Certification CE RED / FCC / ISED / MIC / KCC / ACMA / RSM
Operating temperature -40 to +85 °C
Standard packaging QTY 1500 pcs

Evaluation Board

Evaluation Board ENW89857AXKF_PAN1781_top

The evaluation board for PAN1781 features

  • PAN1781 module
  • Segger J-Link on-board Debugger
  • FTDI UART-USB converter
  • Arduino UNO R3 header (Master & Slave mode)
  • Current measurement pins
  • 2 User Buttons
  • 2 User LEDs
  • u.FL connector
  • Native USB interface
  • Access to all module GPIOs
P/N Package includes Stock Search
ENW89857AXKF  1x PAN1781 Evaluation Board BUY


Name File type Size Date Language
PDF WM PAN1781 Product Flyer Flyer 177KB 31.05.2021 English
PDF WM PAN1781 Product Specification Data sheet 997KB 31.05.2021 English


Name File type Size Date Language
PDF WM PAN1781 Migration Guide Manual 391KB 09.02.2021 English
PDF WM PAN1781 Module Integration Guide Manual 427KB 21.06.2021 English
PDF WM PAN1781 ETU User Guide Manual, Design Guide 1MB 01.07.2021 English


Name File type Size Date Language
PDF Report of Confirmation of EU RoHS (Wireless Modules) Environmental, RoHS 733KB 18.08.2021 English
PDF Report of Confirmation of EU REACh (Wireless Modules) Environmental, REACh 733KB 18.08.2021 English


Name File type Size Date Language
PDF Modules for a wireless world Whitepaper 795KB 24.07.2020 English
PDF Moving forward with Bluetooth Low Energy Whitepaper 1MB 24.07.2020 English
PDF Wireless Connectivity Product Leaflet Flyer, Leaflet 2MB 03.09.2021 English