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  • NRF52805-CAAA

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Bluetooth 5.2 SoC in a WLCSP optimized for small two-layer PCB designs

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NRF52805-CAAA Product Details

The NRF52805-CAAA System-on-Chip (SoC) is the 7th addition to the industry-leading nRF52® Series. It augments the already extensive collection of wireless SoCs with an SoC in a WLCSP optimized for small two-layer PCB designs, ideal for cost-constrained applications. It is the perfect choice for applications such as beacons, disposable medical devices, sensors, simple CE remotes, styluses and presenters. It can also be applied as a network processor, allowing another MCU to leverage its connectivity.

The NRF52805-CAAA features an Arm® Cortex®-M4 processor, clocked at 64 MHz (144 CoreMark), with excellent efficiency (65 CoreMark/mA). It has 192 KB Flash and 24 KB RAM and integrates a range of analog and digital interfaces such as a 2-channel 12-bit ADC, SPI, UART, and TWI. The SoC's current draw is as little as 0.3 mA in System OFF and 1.1 mA in System ON with 24 KB RAM retained and RTC running.

The NRF52805-CAAA is a Bluetooth® 5.2 SoC supporting Bluetooth Low Energy and 2.4 GHz proprietary protocols. It is capable of Bluetooth high-throughput 2 Mbps, transferring data faster and more efficient, and Bluetooth channel selection algorithm #2 (CSA #2), improving coexistence and reducing interference. It also supports 2.4 GHz proprietary protocols, such as Enhanced ShockBurst (ESB). The radio has up to 4 dBm TX power and -97 dBm sensitivity (1 Mbps Bluetooth LE). The radio draws only 4.6 mA in both TX (0 dBm) and RX.

The NRF52805-CAAA is available in our smallest package, a 2.48x2.46 mm WLCSP package, with 10 GPIOs. The package is optimized for two-layer PCBs, cutting cost significantly, compared to four-layer PCBs. Nordic provides a 9.5x8.8 mm reference layout with all ten GPIOs available, requiring only 10 external passive components (inc. two crystal load capacitors). NRF52805-CAAA offers the rare combination of low cost and small size, normally being a trade-off.

The NRF52805-CAAA is supported by two Bluetooth Low Energy protocol stacks, SoftDevice S112 and S113. The S112 and S113 are memory-optimized Peripheral-only stacks supporting up to 4 connections as a Peripheral concurrently with a Broadcaster. They are Bluetooth 5.1 qualified and supports the following Bluetooth features: high-throughput 2 Mbps and channel selection algorithm 2 (CSA #2).

The nRF52-DK is the recommended development kit, it emulates the NRF52805-CAAA, and can be used as a starting point for development before moving over to a custom board. A guide on how to use NRF52805-CAAA with nRF5 SDK is available. 


64 MHz Arm Cortex-M4

192 KB Flash + 24 KB RAM

Bluetooth Low Energy  Bluetooth 5.2

 High-throughput 2 Mbps

 Channel selection algorithm #2

2.4 GHz proprietary protocol support

Ultra-low-power 2.4 GHz multiprotocol radi  +4 dBm TX power

 -97 dBm RX sensitivity

 7 mA in TX (4 dBm)

 4.6 mA in TX (0 dBm)

 4.6 mA in RX (1 Mbps)

 Integrated balun with single-ended output


2-channel 12-bit ADC

Integrated DC/DC regulator

0.3 mA in System OFF

1.1 mA in System ON with 24 KB RAM retained and RTC running

Optimized for small two-layer PCB designs  2.48x2.46 mm WLCSP package

 Significantly lower cost than four-layer PCB designs

 Only 10 external passive components (inc. tw crystal load capacitors)

 9.5x8.8 mm reference layout is available, giving access t all GPIOs

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Q: How does Jotrin guarantee that NRF52805-CAAA is the original manufacturer or agent of NORDIC?
We have a professional business development department to strictly test and verify the qualifications of NORDIC original manufacturers and agents. All NORDIC suppliers must pass the qualification review before they can publish their NRF52805-CAAA devices; we pay more attention to the channels and quality of NRF52805-CAAA products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of NRF52805-CAAA chips? Including NORDIC original factory information, Bluetooth application, NRF52805-CAAA pictures?
You can use Jotrin's intelligent search engine, or filter by Bluetooth category, or find it through Nordic Semiconductor Information page.
Q: Are the NORDIC's NRF52805-CAAA price and stock displayed on the platform accurate?
The NORDIC's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for NRF52805-CAAA, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the NRF52805CAAA we delivered, we will accept the replacement or return of the NRF52805-CAAA only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of NRF52805-CAAA.
(3)The NRF52805-CAAA is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
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More details about return electronic components please see our Return & Change Policy.
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