Part Number:ADS4245
in abs max table, for voltage applied between inputs pins, the abs max states "minimum (1.9V, VDD +0.3)
What is interpretation of this specification?
would like to know what is the maximum input voltage for INP_A and INM_A is.
If I connect the INM_A to GND what is the maximum voltage can be applied to the INP_A?
Part Number:ADS1247EVM
I need to measure temperature using a custom RTD made out of a thin film of gold deposited on a glass substrate, with a 25°C resistance of about 40 Ohm and I decided to use an ADS1247 due to its versatility.
In order to become familiar with the IC, I bought the official TI evaluation module (ADS1247EVM) and I prepared a test circuit where I'm trying to make a ratiometric measuerement of a fixed precision resistor of 1 kOhm, in series with another identical one.
The serie is powered by 1 mA IDAC current and the second resistor is used as Rbias and connected to the reference inputs in order to provide the reference voltage to the ADC.
The scheme is exactely the one reported in this picture, got from the SBAA180B application note from TI.
What I'm expectiong is to get a full-scale measurement, what I'm obtsining is a completely non-sense value, oscillating in the full range of measurement.
I tryied to do the same ratiometric measurement using the internal reference and disconnecting the Rbias from the Vref inputs (this is not clear from the datasheet but it appears necessary in my opinion) but what I get is the same.
The device seems to work properly, I followed the pseudo-code example from the ADS1247 datasheet and reading the registers after having wrote them gives the expected values, I performed also some test measurements and the quantities like the internal Vref or the IDAC current are the expected ones. Moreover, disconnecting the AN inputs during the conversion, you get a low value (like the hex CC), compatible with the noise, I guess.
So, where I'm doing wrong?
Thank you in advance for every hint!
Part Number:DAC34H84
Perhaps TI is already aware of this but the information in the DAC348x EVM User's Guide SLau432A Feb 2012 - Revised May 2016 on page 6 pertaining to the CDCE62005 to discern the difference between the DAC3484 vs. DAC34H84 Gui appearance for the "CDC62005 Control" is incorrect (description of GUI appearance is 'backwards' - leading to 'confusion').
Is there a glossary of abbreviations somewhere pertaining to the DAC348x/DAC34H84 ... ?
Part Number:ADS1232
Tool/software: TI C/C++ Compiler
hello mr Bob,
i am mohammad , i start new project with ADS1232 for read data LOADCELL .
i use mogul ADS1232(wcmcu-1232)
i read pdf , this ADS for read data with can 3 pin
void ads1232_init(void)
{
SCLK=0;
PDWN=0;
delay_ms(100);
PDWN=1;
delay_ms(1000);
while(DOUT == 1){
delay_ms(3);
}
for(i = 0; i < 26; i++) //offset calibration
{
SCLK=1;
delay_ms(4);
SCLK=0;
delay_ms(4);
}
delay_ms(810);
}
long read_ads1232(void)
{
adc_val = 0;
while(DOUT == 1){;}
delay_ms(4);
for(i = 0; i < 24; i++)
{
adc_val = adc_val << 1;
SCLK=1; //clk high
delay_ms(4); // min 100ns
if(DOUT == 1) //data low /high
{
adc_val += 1;
}
SCLK=0; //clk low
delay_ms(4);
}
SCLK=1; delay_ms(2);
SCLK=0; delay_ms(2);
//adc_val=adc_val-65532;
return adc_val;
}
plase help me this run project .
thanks
Part Number:DAC8775
If I'm not using HART, do the HARTIN_X pins need to be coupled to GND through a capacitor? Can they be directly connected to GND or left floating?
Part Number:DAC80501EVM
Tool/software: TI C/C++ Compiler
Hi,
I am trying to use the DAC80501EVM with the USB2ANY along the software GUI provided by TI.
The software shows that the device is connected but there is no change in response at vout.
The GUI shows any modifications I do to the registers but the same is not beeing communicated to the EVM.
I have JP2, JP1 connected on the evm. Please do let me know how to get this thing working.
The log files show SPI bus data being sent.
2019-05-28 17:03:37.391
2019-05-28 17:03:37.391 u2aSPI_Control(handle=0x00003010, ClkPhs=0, ClkPol=0, BitDir=1, CharLen=0, LatchTyp=1, LatchPol=1, DivHi=2, DivLo=0) [2611, TI_USB2ANY.cpp]
2019-05-28 17:03:37.393 Return code set to 0 [2623, TI_USB2ANY.cpp]
2019-05-28 17:03:37.393 Return code set to 9 [397, TI_USB2ANY.cpp]
2019-05-28 17:03:37.393 Return code set to 0 [2625, TI_USB2ANY.cpp]
2019-05-28 17:03:37.394 Returning value 0 [2626, TI_USB2ANY.cpp]
2019-05-28 17:03:37.395
2019-05-28 17:03:37.395 u2aSPI_WriteAndRead(handle=0x00003010, nBytes=3, Data=0x0CA7985C) [2631, TI_USB2ANY.cpp]
2019-05-28 17:03:37.398 Wrote data: 08 F8 00 [2648, TI_USB2ANY.cpp]
2019-05-28 17:03:37.408 Return code set to 5 [397, TI_USB2ANY.cpp]
2019-05-28 17:03:37.408 Return code set to 3 [2662, TI_USB2ANY.cpp]
2019-05-28 17:03:37.408 Read data: 00 00 00 [2663, TI_USB2ANY.cpp]
2019-05-28 17:03:37.409 Returning value 3 [2671, TI_USB2ANY.cpp]
2019-05-28 17:03:37.409
2019-05-28 17:03:37.410 u2aClose(handle=0x00003010) [1311, TI_USB2ANY.cpp]
2019-05-28 17:03:37.418 HIDReceiverThreadProc thread terminating... [697, U2A_ApiClass.cpp]
2019-05-28 17:03:37.448 CallbackThreadProc thread terminating... [423, U2A_ApiClass.cpp]
2019-05-28 17:03:37.448 Returning value 0 [1336, TI_USB2ANY.cpp]
Part Number:DAC8775
Hello I would like to know if I configure the channels like the following:
Channel A - current, 4-20mA
Channel B- voltage, 0-10V
Channel C- current, 4-20mA
Channel D-voltage, 0-10V
If I perform a power cycle will it come up as the setting I provided or will it come up in factory setting?
Part Number:ADS1675REF
Is there any reasonably priced multi-output power supply readily available? If so, who is the manufacturer, the model number, and what website?
Part Number:AFE4900EVM
Hi,
I was trying to playing around with the ECG parts of the board. And I notice the predefined places to put on filters and some recommended (I suppose?) components on the schematics.
Any tips on how the circuit would performance if the DNP components are applied (with jumpers removed)?
Also, how about connecting the RLD_OUT pin directly to the circuit (not through the body) by connecting J17? Is this feasible?
If I do connect RLD_OUT to the body, is there a place on the board that I can connect to R_RLD and C_RLD as it is indicated in the datasheet P135?
Thanks
Part Number:DAC084S085
Hi team.
In datasheet, recommended operating condition of VREF is 1V or more and VA or less.
If we use difficult power source for VA and VREF, is there a prevision for power sequence in DAC084S085?
Part Number:ADS7953
What’s the different between ADS7953SBRHBT and ADS7953SRHBT? What does B mean?
Part Number:AFE4400
I have configured the AFE4400 and read register is enabled and now I am trying to read the register 0x01 in while (1) and I am getting I my previously written value as well but not on every instance.
zoomed out sequence
Zoomed in sequence when data present:
Zoomed out sequence when data is not present:
Part Number:DAC8822
Hi Technical Support,
We have simulated using TINA DAC8822 and got the required simulation output without any issues.
But when we launch the product using the simulated Schematics we have not getting the output as per our TINA simulation.
My Application calls for update data rate of 1us ( total of 80 data the total duration is 80 x 1us = 80us).
So we are using Clock of 1MHz = 1us update rate i.e 1us.
Please find the attached document of output of TINA, Schematics of DAC on product and our observation in the document.
If we put the data @ 1MHz rate = Distorted wave.
if we put the same data @ 250KHz = Required out is achieved. at around 320us. But our application calls for 80us.
Kindly revert back , since we are at the critical end of the product launch.
(Please visit the site to view this file)
With Regards
C P
Part Number:ADS1158
Hello All,
For a new project my customer wants to use ADC1158.
Questions:
1) Is the component still active or it has any longevity issues?
2) Regarding the layout, on more recent ADCs (such as the ADC ADS114S08) it is recommended to combine the analog and digital mass layers in a single layer instead of creating the layers separately and join them in a single point, as we usually do.
Making a single layer is the best practice for this ADC as well?
Many Thanks,
Antonio
Part Number:ADC32RF45EVM
when I power down Channel B of the ADC,FPGA can not link with EVM Board,what can I do to capture the data when only one channel is working?
Part Number:ADC32RF45
Dears:
I only want to use Channel A，but when I PD CHB，EVM Board can not linked with FPGA，is it possible to use only Channel A?