Part Number: ADS7953QDBTRQ1
Hi
Looking alternate support with 150Deg for below part
TL431AQDBZRQ1 |
ADS7953QDBTRQ1 |
UCC5320ECD |
↧
ADS7953QDBTRQ1 with 150 deg temparature
↧
AMC1203: AMC1210
Part Number: AMC1203
Hi,
In one project, I need to transfer Analog signal from High voltage(Hot) side to Low voltage (Cold) side with at least 10kV isolation and at least 20kHz bandwidth(-3dB). I would like convert analog signal into digital signal first. The digital signal will be transferred to cold side with high isolation pulse transformer and then convert back to analog signal. The analog will be converter to current signal and transferred to remote location.
In this regard, I would like to use 1-bit stream AMC1203 or equivalent delta sigma modulators and AMC1210 or equivalent decimation filter to convert back to analog signal. Please let me know how AMC1203 can be interfaced with primary of pulse transformer and how secondary of pulse transformer interfaced with AMC1210. Thanks in advance.
Thanks and Regards,
Rajareddy
↧
↧
DAC8740H: Can the DAC8740H FF/PA model design complete schematic diagram be provided?
Part Number: DAC8740H
Can the DAC8740H FF/PA model design complete schematic diagram be provided?
↧
ADS131E04: 5V single supply and negative input voltage?
Part Number: ADS131E04
Hi there,
we are plannng to use the ADS131E0x or A0x.
We have a single ended signal between -4V to +4V to convert.
To bring this signal to fully-differential adc-input, we will use a difference amplifier (please send me your suggestions).
This difference amplifier should the -4V signal to -4V@INxP & 4V@INxN; and the +4V signal to 4V@INxP & -4V@INxN.
Is that possible with the following configuration?:
AVDD = 5V (single supply)
AVSS = 0V (GND)
internal Reference works @ 4V
This it possible (with single supply) that the analog inputs become negative voltage?
Thanks for your help.
Regards, Maik
↧
ADS122U04: GPIO0 and GPIO1 termination in unused case
Part Number: ADS122U04
Hi Team,
I don't plan to use GPIO0 and GPIO1 in my application and I want to tie the GPIO0 and GPIO1 to DVDD or DGND directly.
Is it OK to do that? Or do we need to put 1~2kohm resister between GPIOX and (DVDD or DGND)?
Regards,
Takashi Onawa
↧
↧
ADC104S021: t_CLH clarification
Part Number: ADC104S021
Page 5 describes T_CLH as the hold time between SCLK Low (which I assume means the falling edge) to CS_N Falling Edge. The timing diagram (Figure 5, Page 7) Shows t_CLH to be the delay between the falling edge of CS_N and the rising edge of SCLK. Which is correct? Are there any limitations on the SCLK falling edge to CS_N falling edge timing? A previous E2E answer ("ADC124S051-timing of SCLK and CS") implied there are none (is it a spec sheet typo, or am I wildly confused).
Thank you,
Brett
↧
AMC1210: AMC1210
Part Number: AMC1210
Hello I use the AMC1210 chip paired with the ADS1205 to measure the rotation angle of the transformer(RESOLVER). I have the following questions:
1) Can I get the initialization order of the AMC1210 chip.
2) Can a AMC1210 interaction with stm32 SPI be obtained.
3) When measuring the maximum value of data stored in the register AMC1210 the value of channel 1 is constantly different from the value of channel 2. At that, the same signals are supplied to channels. What could it be related to?
↧
ADC104S021: Running without CS_N
Part Number: ADC104S021
I am trying to save pins in my project. One option I'm considering is to try to run the ADC104S021 without active CS_N control (either by hard tieing it to ground, tieing it to a power-up reset chip, or by tieing it to a one-shot triggered by the falling edge of SCLK). To this end, I have two questions:
1) Assuming I have properly synched myself to the stream, can I continuously read the device by sending 16 bit clocks (and appropriate DIN configuration messages) without ever toggling the CS_N line?
2) Will the chip reset automatically if I let SCLK go idle for a period of time even if CS_N is constantly asserted? How long?
Thank you,
Brett
↧
TUSB7340: TI USB(2.0/3.0) compliance test solution
Part Number: TUSB7340
Hi,
We are doing a project based on the TUSB7340, We wonder is there any USB compliance test solution for our SI test team to help with USB signal test?
Thank you!
↧
↧
Part Recommendation: High Voltage Differential Input ADC?
Hello Team,
I would like some help finding an ADC or solution in general for a differential +/-10V input? Looking through our portfolio i only see ADC's that support a differential input up to 5V but even then the voltage swing is limited based on the common mode of the signal and reference provided to the ADC. For example, looking at the ADC122S655, though max input is 5.5V with a 2.5 common mode and no reference voltage i can only get a voltage swing of +/-2.5V. (Page 16, figure 36 of DS) Am i interpreting this correctly? It may look like there is not a 1 chip solution for this application and may require to scale down this +/-10V differential signal significatly. Would very much appreciate your thoughts and feedback. Thank you.
↧
ADS1258: ADC values too well correlated, too close together
Part Number: ADS1258
Hi
I have a few questions concerning the ADS1258.
I am in the early prototyping and evaluation phase of a data logger for some sensors. In the first phase I want to specify a few of the sensors individually using single ended mode.
I reactivated my ADS1258 board with an MSP430f5529.
At first I was happy to see that the sensors correlated quite well with the temperature, but upon closer analysis I am not so sure.
Four sensors were connected to A0, A4, A8 and A23, measured with a multimeter, their output is between 2.47 V and 2.53 V.
(a span of >50 mV for which I would expect the signals to lie about 800000 units apart (or 400000 if full scale is from -5 to +5 V, but I am measuring single ended??)
I connected the sensors to GND and 5.0 V of the power supply(E36103A so hopefully stable enough), and connected this to REFN and REFP on the ADS1258-EVM as well as to GND (next to A8).
For the temperature, a DS18B20 was used.
1 28.81250 458659 7429 59 51 458723 7423 85 88 458176 7399 89 98 458484 7424 86 66
2 28.75000 461399 7481 59 43 461457 7440 58 53 460148 7438 89 70 460452 7474 85 85
3 28.75000 458834 7435 86 73 458929 7401 57 39 457988 7404 83 64 458366 7430 77 78
4 28.75000 458504 7441 88 94 458701 7436 77 56 458040 7409 85 76 458208 7424 69 66
5 28.75000 458862 7420 80 75 458543 7445 126 86 457862 7419 78 66 458103 7425 80 65
6 28.75000 459794 7426 72 95 458457 7439 104 92 458133 7405 90 76 458269 7427 82 71
7 28.75000 458419 7432 46 38 458606 7399 56 65 458354 7416 79 69 458347 7433 82 69
8 28.75000 461163 7483 62 37 461295 7449 55 61 460694 7446 103 84 460995 7466 84 75
9 28.75000 458488 7437 94 70 458464 7414 62 52 457984 7410 85 81 458220 7430 67 68
10 28.75000 460924 7473 100 90 461309 7462 85 48 460711 7461 85 77 460959 7466 64 77
11 28.75000 458583 7442 91 97 459042 7453 103 95 458599 7430 82 77 458286 7437 71 66
12 28.75000 458305 7413 44 54 458278 7404 115 105 457907 7425 85 58 458343 7419 74 76
13 28.75000 458138 7425 31 44 458475 7405 71 75 458184 7413 90 74 458165 7433 73 81
14 28.75000 458238 7423 90 68 458540 7407 63 66 457812 7401 76 59 458762 7422 77 69
15 28.75000 458333 7434 68 77 458914 7427 60 57 457933 7400 77 75 458130 7420 81 59
16 28.75000 458349 7427 115 110 458510 7453 95 101 458024 7418 82 77 458914 7427 70 58
17 28.75000 458291 7427 57 74 458580 7440 117 105 457985 7411 83 75 458337 7423 96 91
18 28.75000 459795 7462 44 38 459044 7417 65 51 459820 7432 83 96 460044 7436 77 82
The Status Byte:7 was 1, indicating the results were settled and valid.
In these data, some force was applied to one the sensor connected to A0 after the first few measurements and then released before the last three, which should have yielded an increased value of just the value A0.
In the graph, the values show much too close together and are all correlated. I am not sure if I overlooked something in the configuration.
The other ADC values (all left floating) bunch around 7400 and 80, one would (maybe) expect a bigger span of these noise values too?
I would be grateful for any hints.
Thank you very much,
Pio Bättig
Library used: github.com/.../ADS12xx-Library
Code used:
#include <SPI.h>
#include "ads12xx.h"
#include <DallasTemperature.h>
// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 4
// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
#ifdef ENERGIA
int START = 6;
int CS = 8;
int DRDY = 5;
#endif
#ifndef ENERGIA
int START = 6;
int CS = 8;
int DRDY = 2;
#endif
int LEDPin = P1_0; //green P4_7 red P1_0 msp430f5529
//int RESET_PIN = 9;
//Define which ADC to use in the ads12xx.h file
ads12xx ADS;
void setup()
{
pinMode(LEDPin, OUTPUT);
Serial.begin(115200);
while (!Serial) {}
Serial.println("Serial online");
ADS.begin(CS, START, DRDY); //initialize ADS as object of the ads12xx class
ADS.Reset();
delay(10);
sensors.begin();
// test_PulseRead();
test_continuousRead();
}
void loop() {
}
void test_continuousRead() {
// uint8_t statuses[8] = {};
int32_t results[16] = {};
uint8_t statusByte;
uint8_t channel;
uint8_t valid;
int32_t regData;
ADS.SetRegisterValue(CONFIG0, MUXMOD_AUTO | CLKENB_ENABLE | STAT_ENABLE | CHOP_DISABLE | BYPAS_EXT); //CHOP_ON, external bypass on (for putting an external amplifier)
ADS.SetRegisterValue(CONFIG1, IDLMOD_SLEEP | DLY2_on | DLY1_on | DLY0_on | DRATE_0);
ADS.SetRegisterValue(MUXDIF, 0x00);
ADS.SetRegisterValue(MUXSG0, 0xFF);
ADS.SetRegisterValue(MUXSG1, 0xFF);
//Data sheet ADS1258 P25 : 1 LSB=V_REF/780000h
//0x780000=7864320 dec
statusByte = 0;
while (1) {
// Serial.print("Sensor Resolution: ");
// Serial.println(sensors.getResolution(), DEC);
//Get Temperatures
sensors.requestTemperatures(); // Send the command to get temperatures
delay(1000);
Serial.print(sensors.getTempCByIndex(0), 5);
//Get 16 conversions, put them into the correct slot of the array for single ended conversions
for (uint8_t i = 0; i < 16 ; i++) {
ADS.GetConversion1258(&statusByte, ®Data);
// Serial.println(statusByte, BIN);
//Single ended: 0x08:ch0, 0x17: ch15
channel = (statusByte << 3);//4
channel = (channel >> 3) - 8;
// Serial.println(channel);
results[channel] = regData;
}
// Serial.print(millis());
for (uint8_t k = 0; k < 16; k++) {
Serial.print(" ");
// Serial.print((double)(5.0 * results[k] / (7864320)), 6);
// Serial.print((double)(5.0 * results[k] / (16777216)), 6);
Serial.print(results[k]);
}
Serial.println();
delay(1000);
}
}
↧
ADS54J66: ADS54J66 FS / 4 "phase" ambiguity between channels
Part Number: ADS54J66
We are utilizing all 4 channels of the ADS54J66 device in DDC mode with FS/4 and decimation by 2.
We see a phase ambiguity between channels that changes randomly after reset. Is the FS/4 "phase" deterministic between channels A, B, C, D if each channel is set to the same DDC mode?
Please let me know.
Thanks,
Troy
↧
DAC34H84EVM: DAC34H84EVM
Part Number: DAC34H84EVM
Hi, Jim,
We have vc707 xilinx vertex7 based reference boards, we plan to use these boards as TSW1400 to drive DAC34H84EVB, does HSDC pro software have firmware to support this combination?
↧
↧
ADS124S08: Can I use a voltage converter from REFOUT (like LM828 or LM2664) to supply REFN0 and AVSS?
Part Number: ADS124S08
Hi all,
I want to use the ADS124S08 with a +2.5vdc (AVDD) and -2.5vdc (AVSS) analog voltage supply, 3vdc for the digital supplies (DVDD and IOVDD). I'm wondering if I can use the REFOUT pin which supplies a +2.5vdc and connect it to REFP0 and the input of a voltage converter (like LM828 or LM2664) and connect the output of the converter to the REFN0 and AVSS? I want to be able to convert inputs to the ADC that swing positive and negative within the +2.5vdc and -2.5vdc reference (REFx0). I would use REFSEL=00 = REFP0, REFN0. This would be for differential signals around zero volts. Is this correct?
For single ended I could just change REFSEL=10 = Internal 2.5-V reference. This would be from zero to 2.5vdc. Any problems here?
Thanks
↧
LM98714: Regarding application of Monochromatic CCD in spectroscopic application using LM98714
Part Number: LM98714
Sir,
I want to generate timing clock for CCD which is to be used in spectroscopic applications. My CCD is Monochromatic instead of COLOR CCD. The timing generator IC LM98714 is having three channels which receives Red, Green and Blue inputs from a typical COLOR CCD. Usually MONOCHROMATIC CCDs are used in spectroscopic applications, Can IC LM98714 generate timing clocks as well process the output signal of such CCDs.
↧
ADS1255: Current input levels.
Part Number: ADS1255
Hi people.
I´m starting to design a data acquisition system with three channels (3 ADS1255),
My issue is about input current, in the datasheet are to levels of input current, 10 and 100mA (100mA momentary), see the picture attached!
My system needs to be economic in terms of current because it will be used in field and isolated from digital part via dc-dc converter.
Large capacitances in the power line is not possible once they will cause instabilities in the regulation...
So I need to know when bursts over 10mA happens to take some precautions.
Somebody could help me ?
Nilton
↧
ADS1675REF: the maximum number of samples one can get from ADS1675REF using the ADCPro
Part Number: ADS1675REF
Hi guys. The user guide says ADS1675REF can capture and save 8M 24-bit sampled ADC data in the SDRAM per single acquisition. Can I use the EVM Plug-In of the ADCPro software to record and save all the 8M data to an excel or text file? It says the maximum block size for any test is 1M samples per channel. Does it mean the maximum number of samples the ADCPro software can get from the ADC1675REF for one acquisition is only 1M?
Thanks！
↧
↧
DAC38RF82: DAC38RF82 RISGISTER CONFIGURE
Part Number: DAC38RF82
Hi，Now,I have some problems for using DAC38RF82，we want to set DAC to the mode as following:
L=4 M=1 F=3 S=4 HD=0 K=20 Dual（12bit）4 LANE DAC CLK FREQUENCE 2400MHz ，Can you give me the resgister map ? I can not find the DAC38RFXX EVM GUI with v2p0 or v3p0，I can only download DAC38RFXX WVM GUI without versions，and when I open it , the GUI can not display correct.I'm waiting for your reply. Sincerely！
↧
TX7316: Initialization Sequence in On-chip Beamforming mode
Part Number: TX7316
Hello,
My customer has a question about Initialization Sequence in On-chip Beamforming mode in TX7316.
[Background]
* The initialization sequence in On-chip Beamforming mode is described in D/S (SLOS950B) P.120 to 121.
The step 5.1 is described as follows.
"Write 0 to address 20h to 2Fh. It will set the delay value for all the channels to 0."
* On the other hand, the note in 8.3.5.1.3 (Read and Write of Delay and Pattern Profile, D/S P.56) is written as follows.
"After programming delay and pattern profile set register bit LOAD_PROF to '1'. Register bit LOAD_PROF is a self-clearing bit."
[Q]
Is it necessary to set "LOAD_PROF=1" after "Write 0 to address 20h to 2Fh" in initialization sequence in On-chip Beamforming mode ?
Best Regards,
Hiroshi Katsunaga
↧
DAC43608: Differences of "Glitch" and "Digital feedthrough"
Part Number: DAC43608
Hello,team
This question would be general DACs question.
I'm confused at the difference between "glitch" and "digital feedthrough".
As a definition, glitch noise is happened when digital code is changing. And digital feedthrough noise is come from digital input edge or clock edge.
I think these two noises would be occurred at the same time, when clock rises. Is it right?
If it is right, how large noise there are when clock rises?
Is there only Code change glitch impulse (nv-s) (= 4nv-s in this product)? Or Code change glitch impulse (nv-s) + Digital feedthrough (nV-s) (= 24nv-s in this product)?
Regards,
Hayashi
↧