Part Number: ADS7253
Tool/software: Code Composer Studio
The SPI clock we uses is 15Mhz. Now we send 3*16 bits(=48 bits, = 48 * 1/15 us = 3.2us) as request, and wait 0.5s for conversion, and then it sends back 3*16 bits(=48 bits, = 48 * 1/15 us = 3.2us) to MCU. So it takes totally 6.9us. This is too long for later control. Could we decrease the time in the communication? Especially the request time.
Thanks,
Peter
Part Number: TMS320C6678
Hello,
I am new on the forum looking to understand if two or more DSPs (TMS320C6678) can share with the same TSIP Transmit line.
I read on TSIP I/F User Guide (sprugy4 TSIP P.19) it is possible and just want to make sure each TSIP lane individually and each Time Slot of it can set into high impedance while it is not transmitting.
is it safe to work this way? did you verified it?
Thanks in advanced,
Erez.
Part Number: ISO1050
I am using ISO1050DUBR & ISO7421DR in my project.plz find the attachment &check wheather all connections are fine.Kindly provided your valuable review comments assoon as possible.(Please visit the site to view this file)
Part Number: TPS65988
We have suffered a lot of the Power Delivery Hard Reset issue with TPS65988. There was ticket open at e2e during summer: https://e2e.ti.com/support/interface/f/138/t/812731
Issue still remains there. We can have certain FWs made with your “application tool” which are not suffering this issue. But almost all the time we are configuring some parameter we also see that port1 start cause Hard Reset issue as well. Hard Reset is only visible when port1 ends up to power sink. So basically when plugging in DFP or if we make PR_SWAP to sink. PD-sniffer logs attached. CC-lines and VBUS looks good in oscilloscope.
We have tested many devices together with TPS65988, all behaves same. Normally our port partner is TPS65982 PD-controller.
Can you contact your PD application team and check with them what might cause this?
Part Number: TPS3711
Hi Experts,
If the voltage is applied to SENSE pin earlier than VDD pin, is the device still working? We are expecting below behavior.
Since there is no specification between SENSE and VDD, please let me confirm.
Regards,
Hisao Uchikoshi
Part Number: CD4081B
Hi:
We have used the CD4081B AND Gate in a design and we have a doubt with the Output High (Source) current.
Every 5 secondos, during 3 milisecons, we need a 4,7mA output high current in a Output. We can see that the output voltage goes down from 5V to 3,5V. It is because the output current in the output is to high and the component can not give the power we need.
For the circuit that we have design, the 5v to 3,5V drop voltage is correct, but we would like to know if these operating mode for the CD4081Bis correct. We would like to know if the CD4081B is working in a degradated mode an we are decreasing the live of the component.
Thank you
Part Number: TPS54160A
hi,
in the datasheet of TPS54160ADGQ there are 2 layout reccomandations for the DGQ package with diffferent measures.
specifically on page 50 it is 1.45 x 1.67 while on page 52 it is 1.73 x 1.79 +/-tols.
Idem for the land pattern (pages 51 & 53).
it seems a duplication but numbers are different.
which one is the correct one?
thansk a lot in advance
KR
Vincenzo
Part Number: HD3SS3212
Hi Expert,
I don't have the see detail description for RSVD1 & RSVD2 in datasheet, could you help to know what's the function on both of pins?
Best Regards,
Mark
Part Number: TMS320DM368
Hi,
I have a question regarding the resizing of a 1280x720 image to 344x288.
When we perform the resize the output quality is very poor. Lots of aliasing artifacts around edges and generally a very noisy image. I perform two resizes in the DM368, one to D1/PAL and I use the second output to resize to 344x288. The D1 resize is OK and the image quality is reasonable, but the resize to 322x288 is very poor.
Comparing the resize performance (in quality) to a picture editing app (such as GIMP), we can see that DM36x doesn't perform as well at all.
I've played around with some of the resizer parameters, but have been able to make any improvements.... I've not looked at the coefficients yet - wonder whether it is worth investigating these?
Part Number: TPS560430
Hi
We tried to compile “TPS560430XF PSpice Transient Model” on TINA-TI but failed.
Could kindly provide the TINA-TI model converted the above ?
Thank you and best regards,
Michiaki
Part Number: CC1352R
Hello,
We are working on a setup where we will have three SPI devices connected to the CC1352.
An NFC reader IC, a SD card (using SDSPI) and the OAD external flash (using NVS).
My question now is how do I best divide this between the available resources.
Our preference is to have the NFC on a separate SPI bus and both the ext flash and SD card IC's on a shared bus.
But how do we share the access when both NVS driver and SDSPI driver claim their own access to the SPI bus.
best regards,
Marijn
Part Number: CC1352R
Hi!
I have an CC1352R1 Launchpad Development kit (HW rev. B). It can use two RF bands: sub-GHz and 2.4 GHz.
My question is: Can I switch between the two bands in real time (i.e. while running the same application), or do I need to restart the board (or at least the radio part of it)?
Regards,
Christian
Part Number: CC3120
Hi,
We are now testing the CC3120 function on our platform.
According to the datasheet, CC3120's HOST_INTR pin actives high. We do follow the reference design to use one 100k resistor to pull HOST_INTR pin to ground. However, the HOST_INTR output kept at high on power up. When the CC3120 was reset through the nHIB pin, the output of the HOST_INTR pin was high-low-high instead of the expected low-high-low transition. We had cut down the connection between CC3120 and host CPU to make sure that the HOST_INTR pin wasn't pulled high by host CPU, but the output of HOST_INTR pin still kept at high.
What are the possible reasons that the HOST_INTR is kept at high by default?
Thanks.
Todd
Part Number: LM5143-Q1
Dear Team,
Can this device support two channel 1V/20A, 0.8V/10A ?
What is the maximum current and voltage for each rail?
BR
Kevin
Part Number: BQ35100
Dear TI-forum users,
While studying the BQ35100 for a while there are serval things that remain unclear. The device has problems reading a current of +/-8mA, reading the Current() register always gives the value 0mA.
Strangely enough the voltage measurement ( Voltage() ) is accurate. From my understanding there is a need to use a op-amp to amplify the current, before the device is able to read the current of 8mA.
Using the coulomb counter (ACC mode) for a current draw below the 10mA is probably useless.
Also there is no manual available that defines how to change the CHEM_ID of the BQ35100. Nor what hardware is needed to change the CHEM_ID of production ICs.
I'm wondering how to setup a single BQ35100 IC to flash the right CHEM_ID (607) from BQSTUDIO to the BQ35100.
In short:
Answering these questions will help me a lot and probably lead to a first production.
The current draw of 0.05uA when GE is disabled is unique and perfect for my situation. So hopefully there is a easy way to fix the current measurement
or change the CHEM_ID to 607 so one of these functions work properly.
Hopefully someone could help me out.
Thank you for your time!
Sincerely,
Jorg
Part Number: ADS1115
I am working on a solar system monitoring project in which the pwm charge controller has isolated input, battery and load. I put input on A0-A1 and the load on A2-A3... how does the hardware keep the 2 sources separated/ isolated because it looks like the PGA can only read one pair at a time? For the testing I have done it seems like the mux reverts from differential to single ended, shorts when switching or something where the chip gets damaged.
Is there some trick in Software that keeps one mux pair open when the other is being read or something else? And or goes to both open then close one as needed?
Or should I be using 2 different ads1115 to read 2 power sources that must be kept isolated? I am also having an issue with my 3rd ads1115... I have 3 running to Arduino uno r3. 0x4a gives me problems in programming and always returning -1.
None of the documents i can find give me a reference for the Arduino as to a list of programming commands and the command arguments for this chip... I believe it is an Adafruit library but of no help.. any ideas?
Part Number: OPA656
Hi how to choose the value ofCD in the real circuit as the following
The data sheet says that CD indicates the diode capacitance. Then, which capacitors are diode capacitors in the following circuit, or how to select the value of CD in the following circuit?
Thanks very much
Fig.1 Circuit connection flow chart. function generator—SPDT—LMH6559—Capacitance and resistance-OPA656
Fig.2 OPA656 circuit design schematic
Fig.3 OPA656 data sheet ,Wideband, High-Sensitivity, Transimpedance Amplifier
Part Number: EV2400
Hi Team,
I'm posting on behalf of our customer. He is having issues with the EV2400 I2C connection. SMBus works well and the set-up has been made across multiple BQ34Z100-G1 boards. He tried using EV2300 and the connection was successful. The firmware has been updated but bqstudio still unable to recognize the device.
Appreciate your help and inputs.
Kind Regards,
Jejomar
Part Number: TPD6E05U06
Hi
we are using TPD6E05U06RVZR to protect USB 3.0 interfaces on a device, with metal enclosure(chasis) and internal IO PCB board.
SCH as below. Should I connect GND pins of TPD6E05U06RVZR to DGND(digital signal GND) or Metal Chasis GND (the metal enclosure) to ensure pass a 8-kv contact ESD test ?
Pls note the NC_PH1/2 pins are the two fix pins of usb connector.
Thanks. Any suggetions are welcome.
Part Number: BQ25895
Hi team,
my customer is asking BQ25895 IBIS model for simulation,
do we have this device's IBIS model available ? if yes, please kindly provide, many thanks!!
Andy