STM32G4 is here, do you still think the number of ADCs is not enough?

littleshrimp

STM32G4 is here, do you still think the number of ADCs is not enough? [Copy link]

 

The STM32 series of microcontrollers has a very high analog configuration, supporting up to 5 4MSPS sampling 12-bit ADC cores with 42 channels, up to 4 12-bit DAC cores with 7 channels, 7 comparators, and 6 amplifiers that can be configured as PGAs.

The main frequency is 170MHz. This time we can no longer say that the STM32 has no more than 4 ADC cores.

But people are always dissatisfied. It would be perfect if the number of amplifiers and comparators could reach 8.

Bring this development board with you

https://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-mpu-eval-tools/stm32-mcu-mpu-eval-tools/stm32-nucleo- boards/nucleo-g474re.html

bobde163

The specifications are quite high, I wonder if the price is also high

generalcircuits

The higher the specification, the higher the price.

英尚微电子

There is only one question~~ How much is the price~~ Is it very expensive~~ It is so expensive that I can only watch from afar~~

ddllxxrr

It's really G-rated. It's so high.

littleshrimp

bobde163 posted on 2019-7-19 10:06 The specifications are quite high, I wonder if the price is also high

According to the official price, it is not expensive and affordable.

littleshrimp

Yinshang Microelectronics published on 2019-7-19 10:51 There is only one question~~ What is the price?~~ Is it very expensive?~~ It is so expensive that I can only watch from a distance~~

Personally I feel it is not expensive

bobde163

littleshrimp posted on 2019-7-19 20:28 The official price is not expensive and it is affordable.

The official price is about 0.7 USD, which is about 5 RMB, but it costs more than 10 RMB on Taobao.

supermiao123

Awesome

littleshrimp

bobde163 posted on 2019-7-22 08:19 The official price is about 0.7 US dollars, which is about 5 yuan, but it costs more than ten yuan on Taobao

It's not that cheap

bobde163

littleshrimp posted on 2019-7-22 09:45 It’s not that cheap

Comparing the prices, the most expensive single piece on Mouser is more than 12 yuan including tax, and the bulk is more than 5 yuan, while the price on Taobao is more than 20 yuan

littleshrimp

bobde163 posted on 2019-7-22 14:51 Compare the prices. The most expensive single chip on Mouser is more than 12 yuan including tax. If it is in large quantities, it is more than 5 yuan. On Taobao, it is more than 20 yuan

You are looking at g0, I am talking about g4, like stm32g474

JimmyKudo

6 channels would be perfect, as it can accurately sample the three-phase voltage and current synchronously, and the phase estimation will be very accurate.

threetigher

Can I use the HRTIM of stm32G4 to realize a phase-shifted full bridge? Thanks

littleshrimp

threetigher posted on 2020-2-11 17:15 I would like to ask the OP whether the HRTIM of stm32G4 can realize the phase-shifted full bridge? Thank you

I have not studied HRTIM, you can take a look at the user manual

threetigher

https://item.taobao.com/item.htm?spm=a230r.1.14.8.31b04b52xfcxfm&id=610621375583&ns=1&abbucket=8#detail

Look at the price of this STM32G474QET6, LQFP-128, it feels like fishing~~

threetigher

JimmyKudo posted on 2019-7-26 15:04 6 channels would be perfect, and accurate three-phase voltage and current synchronous sampling can be performed, and phase estimation will be very accurate

If the three-phase load is balanced, it is enough to sample only two currents.