How to choose between different chips in TI's Sub-1GHz product line?

Jacktang

How to choose between different chips in TI's Sub-1GHz product line? [Copy link]

New product designs recommend the use of high-performance transceiver series, including CC1120, CC1125, CC1200. Both CC1120 and CC1125 support narrowband applications, and their corresponding RF performance characteristics are high sensitivity and strong anti-interference performance. CC1200 is for high data rate transmission and can run more stably at data rates above 500kbps. CC1125 has the most excellent RF performance and can meet the most stringent European standard ETSI EN 300 220 Category 1.

Communication advantages of Sub-1GHz band

1. Long distance:

Half the frequency provides twice the connection distance, and the lower the frequency, the longer the connection distance, so low frequencies such as Sub-1 GHz can propagate farther than higher frequencies. Sub-1GHz has better penetration than 2.4 GHz, and the signal is less weakened when passing through objects such as walls. Low frequencies can propagate better in "corners", which can improve coverage performance.

2. Reliability:

Avoid the already crowded frequency bands: The 2.4 GHz band has Bluetooth, ZigBee, and Wi-Fi; in contrast, the Sub-1GHz ISM band is mostly used for low-duty-cycle connections with low potential for mutual interference. Sub-1GHz solutions can provide better protection against narrowband interference through frequency hopping.

3. Low power consumption:

Compared to 2.4 GHz, Sub-1 GHz uses lower transmission power to achieve the same connection distance. This makes Sub-1 GHz very suitable for battery-powered applications. Suitable for low-power and low-rate application scenarios.

Extremely low power SOC communication solution:

In some IoT applications, battery-powered sensors and communication devices are needed to obtain relevant data. This not only requires low power consumption, but also limits the size of the device. Undoubtedly, single-chip integrated solutions have applications and demand scenarios. There are many existing WiFi+BT single-chip solutions, but the single-chip solutions integrated with Sub-1 GHz are limited. The following are the relevant solutions I found:

Texas Instruments (TI) CC13xx series devices feature extremely low active RF and microcontroller (MCU) current consumption, in addition to flexible low-power modes, excellent battery life, making them suitable for long-range battery-powered operation and data acquisition applications.

The CC1310 device combines a flexible, ultra-low-power RF transceiver with a powerful 48MHz Cortex-M3 microcontroller in a platform that supports multiple physical layers and RF standards. A dedicated radio controller (Cortex-M0) is used to process low-level RF protocol commands stored in ROM or RAM, ensuring ultra-low power consumption and flexibility.

The CC1310 device has excellent RF sensitivity and stability, selectivity and blocking; it provides AES encryption algorithm.

The CC1310 device is a highly integrated single-chip solution that combines a complete RF system with an on-chip DC-DC converter. Sensors can be processed in an ultra-low-power manner by a dedicated ultra-low-power autonomous MCU that can be configured to process analog and digital sensors, so the main MCU can maximize sleep time.

The chip performance:

ARM Cortex-M3 processor frequency 48MHz

32KB/64KB/128KB In-System Programmable Flash

8KB cache static random access memory SRAM + 20KB ultra-low leakage SRAM

16-bit ultra-low-power sensor controller that can operate autonomously from the rest of the system, 2KB ultra-low-leakage SRAM

Support OTA

Low power performance:

Wide supply voltage range: 1.8 to 3.8V

RF power: RX: 5.4mA (CC1101 nominal 15.6mA)

TX (+10dBm): 13.4mA (CC1101 nominal 28.8mACC1101 based on 0.18 micron CMOS process)

48MHz microcontroller (MCU): 2.5mA (51A/MHz)

Sensor controller (24 MHz): 0.4mA + 8.2A/MHz

Sensor controller, wakes up once per second to perform one 12-bit ADC sample: 0.95A (stm32 1uA)

Standby current: 0.7A (RTC running, RAM and CPU retention)

Shutdown current: 185nA

Compared with CC1310, the main features of CC1350's RF core include a 2.4GHZ transceiver compatible with Bluetooth BLE 4.2 standard, which is a low-power dual-wireless solution. The current consumption of low-power Bluetooth is 6.5mA when receiving and 10.2mA when sending at 0dB. In addition, CC1350 also supports communication protocols such as long-range Bluetooth, with an output power of 9dBm, a receiving sensitivity of -87dBm (Long-Range Mode), and a transmission speed of 50kpbs up to -110dBm).

CC430=MSP430+C1101, a Soc series released by TI at the end of 2008, 64pin with 8 models, 20MHz, 2-4k RAM, 8-32K flash, less used, high cost. Compared with the MCU+CC1101 solution, it has no obvious advantages.

nRF9E5 SOC: 8051 core 32pin, support 4/8/12/16/20MHz crystal oscillator, 3 timers, 4-channel 10-bit ADC, support CRC; -100dBm RX receiving sensitivity, +10/6/-2/-10dBm TX output, support 433/868/915MHz frequency band GFSK modulation, 50kbps

2.5A power down mode
3mA active CPU at 16MHz
9mA TX at -10dBm
30mA TX at +10dBm
12.5mA RX

alan000345

Good to share, I learned a lot and gained knowledge.