Inventory of mainstream Bluetooth chips, which one is better, Nordic/TI/Broadcom?
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Since the birth of wireless communication technology in the mid-19th century, from using smoke, torches, flash mirrors, flares, etc. to transmit information within line of sight, to Samuel Morse's invention of the telegraph network in 1838, to the telegraph network being replaced by the telephone, and then decades later in 1895, Marconi successfully carried out wireless transmission from the Isle of Wight in the UK to a tugboat 30km away for the first time, and wireless communication in the modern sense was born. From this day on, wireless communication technology has developed rapidly, enabling us to achieve better communication quality, lower power consumption, smaller size and cheaper prices over longer transmission distances, making wireless communication, wireless television, wireless networks, etc. in public and private networks a reality. At present, the wireless wave has not retreated, but has a trend of intensifying. Especially in recent years, the development of global communication technology can be said to be changing with each passing day.
Wireless communication technology can be roughly divided into short-range wireless communication and long-range wireless communication according to the transmission distance. Short-range wireless communication includes WIFI, Bluetooth, ZigBee, Z-Wave, NFC, UWB, LiFi, etc. Long-range wireless communication includes LoRa, NB-IoT, etc.
Today I will explain to you the Bluetooth chips on the market.
Bluetooth technology has been around since Ericsson first proposed it in 1994. It has been constantly updated and iterated. So why has Bluetooth technology evolved from V1.1 to the current V5.0? It can be summarized into the following characteristics:
1. Global applicability: Bluetooth works in the universal 2.4G frequency band
2. Can transmit voice and data simultaneously
3. Temporary peer-to-peer connections can be established
4. Has good anti-interference ability
5. The Bluetooth module is small and easy to integrate;
6. Low power consumption;
7. Open interface standards;
8. Low development cost.
With the rapid development of the Internet of Things, Bluetooth technology is also keeping pace with the development of the Internet of Things. The latest Bluetooth 5.0 standard has a transmission speed that is twice that of the previous Bluetooth 4.2 version, and an effective distance that is four times that of the previous version. In addition, Bluetooth 5.0 also allows the reception of data without pairing. Currently, most of the chips and solutions on the market are Bluetooth 4.0 or above. With the expansion of market demand, various domestic and foreign suppliers have developed and launched their own Bluetooth chips and modules. Therefore, there are a lot of Bluetooth chips on the market, so how to choose the right Bluetooth chip for corresponding research and development according to your needs? We have compiled a list of Bluetooth chips and an analysis of their descriptions for your reference.
Overseas part:
Nordic nRF51822
nRF51822 is a powerful and highly flexible multi-protocol SoC for Bluetooth low energy and 2.4GHz ultra-low power wireless applications. The embedded 2.4GHz transceiver supports Bluetooth low energy and 2.4GHz operation, of which the 2.4GHz mode Nordic nRF24L series products are wirelessly compatible. It supports the S110 Bluetooth low energy protocol stack and the 2.4GHz protocol stack (including Gazell), both of which are provided free of charge in the nRF518 software development kit. It is mainly used in mobile phone accessories, PC peripheral products/toys and electronic games, smart home devices and other fields. Taobao, blogs and other places have a lot of uses and solutions for this chip, which is more suitable for Bluetooth beginners.
TI CC2640
CC2640 is TI's protocol stack that can support BT4.1 and above. It is also the only SOC chip in the industry with ARM Cortex-M3+M0+16bit coprocessor as the core architecture. TI provides a complete reference design, which can be easily developed without too much RF expertise, making the development threshold lower. It supports over-the-air upgrade (OTA) function. It can be applied to smart home, toys and other fields. There are many resources for this chip of TI on the domestic Internet, and there are many companies specializing in TI chip solutions in China, so it is very suitable for self-learning Bluetooth development, and many problems encountered in the development process can be basically solved.
CSR CSR1011
The CSR101x series of the British CSR company adopts Bluetooth 4.0 technology and is a single-mode Bluetooth low-power platform that provides the CSR uEnergy SDK2.5.1 development environment. CSR has a high market share and is popular and recognized by the European and American markets, but the price remains high and general suppliers will not choose this product. It can be used for smart Bluetooth voice remote controls, smart homes, etc. At present, there are relatively few resources on domestic websites for this chip.
Broadcom BK3431
The BK3431 chip is a highly integrated Bluetooth 4.0 low power single-mode device. It integrates a high-performance RF transceiver, baseband, ARM core microprocessor, rich functional peripheral units, programmable protocols and profiles to support BLE applications. Flash program memory makes it suitable for custom applications. The development cost is low, but the software of the chip itself has certain bugs, and it is time-consuming to develop.
Domestic part:
Liankefa (Taiwan) MT7622
As the world's first Bluetooth 5.0 system-on-chip (SOC), the MT7622 is powered by a 1.35GHz 64-bit dual-core ARM Cortex-A53 processor. The MT7622 has MediaTek's exclusive Wi-Fi network accelerator technology built in to provide a high-quality network connection experience. In addition, the MT7622 supports mainstream audio interfaces, including I2S, TDM and S/PDIF. In addition, in addition to integrating Wi-Fi, Bluetooth and Zigbee, the chip also provides a rich range of slow input/output ports to meet the technical requirements of home automation gateways.
Actions ATS2829
ATS2829 is a highly integrated Bluetooth 4.2 audio solution SoC, designed for portable and wireless Bluetooth audio, meeting market demand for high performance, low cost and low power consumption. ATS2829 has a compact package, and its large built-in RAM can meet the needs of different Bluetooth application solutions, and supports background Bluetooth. As a domestic chip manufacturer, Actions has cooperated with well-known brand customers including Ihome, Creative, Onkyo, Mifa, Insignia, Anker, See You Then, Xiaomi, Langqin, Leguo, Atmingke, Kuwo, etc., and the number of customers continues to increase, and the impressive performance is evident. Crazy call for domestic chips!
Airoha (Taiwan) AB1526
AB1526 is an advanced single-chip solution that integrates baseband and radio for high-density audio applications. AB1526 supports Bluetooth 4.2 dual-mode certification, it has embedded serial flash memory, more flexible customer software upgrades and supports third-party software porting.
Zhuhai Jieli Technology AC410N
The AC410N series is a low-power, high-performance microprocessor with 96KB SRAM, integrating a 32-bit RISC CPU and a rich peripheral circuit. The characteristics of this series are chips, which are designed for low-power applications and the Bluetooth version is 2.0+EDR.
Below is a comparison of the above Bluetooth chips.
It can be seen that although the Bluetooth research and development was dominated by foreign countries in the early stage, domestic chips have been constantly catching up with foreign chips, and have developed or are developing many good Bluetooth chips. However, in general, there are relatively few domestic Bluetooth chips available online. If you need to use them, you can go to the company's official website to buy them, so as to get better and more convenient services.
After learning so much, we need to know that although the market is huge and the demand is also huge, in actual products, we need to understand where the market is positioned and what specifications of chips or modules the product can accept. For different usage scenarios, we need to determine different focuses to compare chip parameters. Only after understanding all of these can we choose the right chip and solution. In the process of learning Bluetooth, you can choose the right chip based on cost, online resources of the chip, etc., so that you can get twice the result with half the effort in the learning process!
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