Dear Alone173 -
I would also add here to Raymond's input this reference design using the LMP7721 & LM4140 (precision reference you were looking for, too): https://www.ti.com/lit/an/snoa529a/snoa529a.pdf
then compare to this reference design, using…
Part Number: LMP91200 Other Parts Discussed in Thread: LMP91000 , TIDA-00561 , LMP91000EVM https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1135597/lmp91200-reference-to-build-ion-selective-electrode-measuring-circuits?tisearch=e2e-sitesearch&keymatch…
Dear Thoufiq,
The LMP91200 VOUT should be in the mV scale.
Reference design example with data (pages 20 & 21) is here: https://www.ti.com/lit/pdf/tidua47 (design guide) from https://www.ti.com/tool/TIDA-00561
Jeff -
Yes sir! - please see page 17 here: https://www.ti.com/lit/ds/symlink/lmp91002.pdf (amperometric measurement example with LMP91002) as well as
LMP91200 datasheet ( https://www.ti.com/lit/gpn/lmp91200 ) and this reference design using it ==…
Hello Dharmesh,
LMP91200 is an Integrated analog front end for pH Sensing Applications and we have a reference design that uses this part, TIDA-00561, which you can find in the following link:
Hello Tom,
Did you have a chance to look at the Wireless pH Sensor Transmitter TI Design? The schematics and design guide will be very helpful to address your concerns. If you have more questions after reviewing the TI design, please let us know.
…
Hi Alone173,
Please try the Webench Designer tool for LMP91200 located in the product page of the IC. This tool will guide you on the design approach based on the characteristics of your pH sensor. If your part is not listed there you can manually enter…
Hello TI,
for our application is the Firmware of ph-Sensor Extension for SensorTag very interesting.
Despite to great efforts, it is unfortunately not possible to get this!
Neither the "TI sales representative" Farnell can deliver the Extension…
