Part Number: ADS1118 Hello, I am using SPI for both the ADS1118 and a digital potentiometer. The digital potentiometer required an external pull-up resistor on the DOUT line, which means the ADS1118 DOUT line will also be pulled up externally in addition to the weak internal 400k Ohm pull-up. Will this create any issues. The value for the external resistor we plan to use is in the range of 2.2k to 5k. Thank you very much!
↧
Forum Post: ADS1118: External pull-up resistance value range
↧
Forum Post: ADCPRO: Timeout problem while connecting from ADCPro to ADS1278EVM
Part Number: ADCPRO Hi, I am using a windows 10 PC that has ADCPro , I tried to connect to ADS1278EVM, But each tme I get an error "Download Failed...reset the hardware" After that another window opens and says "The firmware load has failed due to a timeout condition. Please reset the hardware ..." We have to set of ADS1278EVM-PDK and on both of them we see this problem. Is there any specific thing that I should do before connecting them to PC. Is it required to install a specific driver while I can see the USB connected message?
↧
↧
Forum Post: ADS8318: ECCN
Part Number: ADS8318 would you please advise ECCN for ADS8318 ? and are all this series the same ECCN, such as ADS8318IDGST? Thank you very much for the help!
↧
Forum Post: Can't get a valid data from ADS1115.
Hey guys, I have a problem about the ADS1115 connect to Arduino UNO board. I follow the "Assembly and Wiring" on https://learn.adafruit.com/adafruit-4-channel-adc-breakouts/assembly-and-wiring I went to read voltage from Arduino but I got output of "-1" always. 1 2 3 4 5 6 7 8 9 AIN0: -1 AIN0: -1 AIN0: -1 AIN0: -1 AIN0: -1 I've searched on several forums, however, I stiil don't know what happen? I've tested 4 different ADS1115 which also given me "-1" value. Code as follows. Arduino's library of ADS1115 from Adafruit on https://github.com/adafruit/Adafruit_ADS1X15 ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 #include #include Adafruit_ ADS1115 ads; void setup( void ) { Serial.begin(9600); Serial.println( "Hello!" ); Serial.println( "Getting single-ended readings from AIN0..3" ); Serial.println( "ADC Range: +/- 6.144V ((1 bit = 3mV/ ADS1015 , 0.1875mV/ ADS1115 )")" ); ads.begin(); } void loop( void ) { int16_t adc0; adc0 = ads.readADC_SingleEnded(0); Serial.print( "AIN0: " ); Serial.println(adc0); Serial.println( " " ); delay(1000); }
↧
Forum Post: RE: ADS1278: overheating and damaging device
Dear Keith Thanks for your help ! We test the ADS1278 as your advice , But the hot and demage phenomenon still exist , the IOVDD is 3.2-3.3V , is there any other advice , many thanks ~
↧
↧
Forum Post: RE: ADS8354: SPI Communication problems
Hi thank you for our reply. So to clarify my host needs to latch the data from SDO (MISO) on the SCLK rising edge and update SDI (MOSI) on the SCLK rising edge? Is this possible with a microcontroller from TI?
↧
Forum Post: ADS5402: DACLK frequency and mode when decimation mode is on?
Part Number: ADS5402 Hello! ADC 5402 has a decimation mode. This is described in the datasheet on the ADC in Figure 38. What frequency will be at the outputs of DACLKP(N) and what mode (DDR or SDR) will be when the decimation mode is on?
↧
Forum Post: RE: ADS124S08EVM: ADS124S08
Hi Alexander, Thanks for your reply. Actually I have connected +5V supply from arduino Uno pin to JP9 jumper(1,2 shorted) and common ground to JP11 jumper position(2,3 shorted),then also EVM is powered up and also I don't need to think about the DVDD voltage. According to my connection DVDD voltage is within the limits and also I am getting supplies of 5 V and 3.3 V at the J7,J8,J9 side. But you shared one thread also,in that it was discussed that at JP6 position we have to give supply from arduino and related to DVDD supply. Are my connections right? If I am wrong please correct me. Thanks. Regards, Sushmita Chaudhary
↧
Forum Post: RE: Linux/ADS54J20: Linux driver ?
Hi Jim, Initially we tested EVM and now we are using SPI/JESD lines connected with processor. I want to access adc device using "/sys/bus/iio/devices/iio:deviceX" files in Linux. And for that we need Linux iio driver similar to https://elixir.bootlin.com/linux/latest/source/drivers/iio/adc Is there any driver available or any driver close match to this adc ? Thanks, Hardik
↧
↧
Forum Post: DAC8775: 0V output on uni-polar mode
Part Number: DAC8775 Hi, My customer is evaluating the DAC8775 on EVM. Zero code of voltage output on uni-polar mode seems not to go well as below. - OUTA: 0.111567V, OUTB: 0.040245V Input code:0x0000 VNEG is connected to GND directly. Selected VOUT range: 0 to +5V Not zero code is outputted correctly(e.g. 2.5V, 5V). Is there any careful point to output 0V? Please let me know if you have any question. Best Regards, Kuramochi
↧
Forum Post: ADS1261: Multiplexed sensors design check
Part Number: ADS1261 Hello, We have to digitize 4 different strain gauges used in bridge configurations. So we need 4 differentials inputs, therefore the ADS1261 seems good for this (by the way, is there a better choice for simultaneous sampling of strain gauges at relatively high frequencies?). I've used the ADS1261-60 Design Calculator Excel sheet in order to calculate the maximum data rate I'll be able to get. Using the Chop mode, it seems to be 2912.9/4 = 728.225 SPS. Do you confirm? I'm a bit confused regarding to the frequency response of the digital filter when multiplexing the inputs, is it the same as a continuous sampling on one channel? And about the ADC configuration for multiplexed inputs, is this the good workflow: - First mux on channel 1 - Start continuous conversion - Wait for !DRDY - Get the sample - Mux on channel 2 - Wait for !DRDY - Get the sample - etc. Thanks in advance, Victor
↧
Forum Post: ADS1113: driver example
Part Number: ADS1113 Hello Do you have the driver example of ADS1113 , if you have Linux Driver is better ,thanks
↧
Forum Post: ADS1299-6: Help to interface ADS with Arduino Mega 2560
Part Number: ADS1299-6 As part of my final year project to design an EEG acquisition system, I am trying to interface the ADS1299 chip (not the demo kit) to and Arduino Mega 2560. PFA my pin connections, code and the output herein. The problem is I am not even able to read the deviceID. I would be highly obliged if someone could share with me their connection (pin) diagram, the code and everything else with a step by step guide on how to connect, interface and the the ADS working with Arduino to acquire and display data in real time and even interface it to MATLAB for realtime processing. (Please visit the site to view this file)
↧
↧
Forum Post: ADS8698: ADS8698: using the Alarm Output
Part Number: ADS8698 The ADS8698 is already used for a new design in a high voltage power supply unit and works very well. But there is one feature of this ADC i missunterstood and therefor one important feature of our PSU will not work - the software independent Alarm output. The original design idea was using the ADC for monitoring voltages and make an emergency shutoff if a value is out of range. After reading the datasheet more carefully the function of auto sequencing and alarmout is not running by the ADC itself but must be triggerd by SPI communication. So for security reason on our device when the software will hang there is nor more monitoring of the connected voltages. What was the TI idea how to use this alarm feature? if the mikrocontroller has to read the Adc values the comparsion against high and low limits can be done in software!? Actually we hope our software will never hang.. So what is the correct usage of the value comparsion and alarm output of ths ADC? Maybe you have a idea how we can solve our mistake? (ofcourse , reading your datasheets mor carefully can help) Thanks, Ch.Merz
↧
Forum Post: DAC38RF80EVM: Phase Noise measurements
Part Number: DAC38RF80EVM Hi All, Does anyone have Phase Noise measurements on DAC38RF80EVM ? Priority to input 5200GHz , Output 850Mhz. Thanks Porat.
↧
Forum Post: ADC08DJ3200: work with Xilinx 7A100T GPT 6.6Gb/s 8Lanes
Part Number: ADC08DJ3200 Hello Team, Customer is asking if ADC08DJ3200 with input clock 2.5GHz and operates as single channel so will be 5GHz. Can customer use Xilinx 7A100T GPT 6.6Gb/s 8Lanes to communicate with it? Thanks! Andrew
↧
Forum Post: ADC128D818: Internal Reference on Pin 1?
Part Number: ADC128D818 I'm surprised that I can't measure the internal reference voltage on Pin 1. As it is recommended to put a bypass capacitor there, I expected to read the reference voltage when put a DMM on Pin 1 (VREF). But i read 0 mV. Is this normal? Regards, Peter
↧
↧
Forum Post: ADC128D818: Channel Readings Registers LSByte sticks at 0xFF
Part Number: ADC128D818 I set up a ADC128D818 to convert continuously in mode 2 (four differential inputs). The MSByte seems to be read correctly, but the LSByte sticks on 0xFF (on all four channels). Is there something I've forgotten, like switching to a 16-bit-mode? Thanks in advance, Peter
↧
Forum Post: ADS1298R: ADS1294R SPI issue
Part Number: ADS1298R Dear all, We designed board with the ADS1294R and we have issue with the SPI. We have no ID returned and the value retuned is completely different we should hve (should have 0x60). The ADS1294R reset pin is driven by an external MCU so the chip is well reset. we are using internal clock and configuration of the ADS1294R is on unipolar mode (3V3 for AVDD and DVDD, AVSS=GND) Do you have any idea? Thanks Regards, Damien
↧
Forum Post: ADC12D1620QML-SP: material composition of the added heat sink
Part Number: ADC12D1620QML-SP Team, What is the material composition of the added heat sink? Thank you
↧