Suggest the suitable products which will fulfill our application

raj kumar

Other Parts Discussed in Thread: ADS1220, ADS124S06, ADS122U04

Dear sir,

we have requirement of one MCU , 24-bit ADC and processor Board, I will explain our application, The 12 channel RTD system is used to read the data from 12 temperature sensors(4-wire RTD) with channel to channel isolated ADC Board we required. in our case 12 channel is not available in single board we will use 2 or 3 boards. Each channel can accept either a thermocouple or a RTD input. our application consists of 3 parts

1) ADC module : to read the 4-wire RTD sensor data

2) Microcontroller :ADC connected to this microcontroller and having the external SD card support to store the ADC data

3) Processor Board: to control the total operations using GUI which is running in the Processor.

External ADC having the below specifications:

1) DC Resolution: 24 bits or higher

2) sampling rate : minimum 5 samples per second for each channel

3) PT-100 3 wire/4 wire RTD we will use.

4) channel -channel isolate ADC board.

Microcontroller having the below specifications

1) ARM-cortex-M3 processor

2) 32 bit data bus width

3)Ethernet support-1 or more

4) 2 channel ADC >=12 bit resolution to read the pressure sensor data.

5) Serial RS-232 support

Microprocessor consists of the below following specifications

1) Microprocessor:Cortex-A57 or A72, 64 bit High speed, multicore processor

2) Operating system: Real time Linux Better for running embedded applications

3) Base Clock Speed of Processor >=1.5 GHz

4) No. of Cores:4 (Quad)

5) RAM Size: 4GB or better

6) GUI QT based

7) LCD 7-inch LCD display support

8) Mouse and Keypad support

9) External SD card support to store the ADC data

please suggest the 3 things ADC, controller , processor board which can fulfill our requirement form your products list.

Thanking you...!

Best Regards

Raj

over 1 year ago

0 LeonardEllis over 1 year ago

TI__Guru 71526 points

Hello Raj,

Seems you are wanting 3 separate development boards that can be connected together, is that correct?

If so, please review the various development boards in each product group. For example, ARM-Cortex boards are here: https://www.ti.com/design-development/embedded-development/arm-cortex-m0-mcus.html . Perhaps this MSPM0 board will meet your requirements: https://www.ti.com/tool/LP-MSPM0G3507 .

And 24-bit ADC here: https://www.ti.com/data-converters/adc-circuit/products.html#84=20%3B32&1028=6%3B12& .

An overview of all the Development boards is here: https://www.ti.com/design-development/hardware-development.html and: https://www.ti.com/product-category/overview.html .

Regards,

~Leonard

0 raj kumar over 1 year ago in reply to LeonardEllis

Prodigy 140 points

Dear sir,

Thanks for the response, yes, we are connecting three separate development boards together to fulfill our application requirement(microcontroller board(arm-cortex-m3)+ADC(24bit ADC with channel to channel isolation with to measure the temperature using 4 wire RTD )+ processor Board (to control the all the operations through GUI)), but in that we have some specifications as mentioned in previous message , we have little bit confusion which products fulfill our application from your products, that's why I have sent a mail in forum. previously they suggested one ADC module as per my requirement , I have completed the project with suggested ADC board. there are lots of ADC boards , controller development boards of TI. previously I have checked in the TI website products I didn't find the arm cortex-m3 controller that's why I have sent a mail in forum , I have checked with your links but we require the arm-cortex-m3 controllers.

Best Regards

Raj

0 Joachim Wuerker over 1 year ago in reply to raj kumar

TI__Mastermind 22905 points

Dear Raj Kumar,

I am from the precision ADC team in TI and can provide some recommendations for the ADCs.
I assume you need one ADC per RTD if this is a channel-channel isolated module, is that correct?

In that case I would look at ADS1220 or ADS124S06, which both offer an SPI interface.
If you want to reduce the number of digital isolator channels going from the ADC to the processor, then you could also look at ADS122U04 which offers UART interface, and thus would only need two digital isolator channels going to the processor.

You may also want to study our exhaustive application note on RTD measurements:
A Basic Guide to RTD Measurements (https://www.ti.com/lit/pdf/sbaa275)

Regards,
Joachim Wuerker

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Suggest the suitable products which will fulfill our application