Questions tagged [texas-instruments]
A manufacturer of semiconductors, both discrete and integrated circuits.
294
questions
3
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2answers
58 views
Decoupling capacitors for ADC
I have this ADS6125 adc. In the datasheet it is written that this ADC uses internal decoupling:
"capacitors on-chip eliminates the need for external decoupling" (p.45)
"As ADS612X ...
0
votes
2answers
32 views
Texas Instruments ADC - Input Clock
I have a question regarding the ADCs ADS58B19 inputclock, this ADC can be clocked with LVDS.
The data sheet says that Vpp = 700mV, which is +-350mV. The ADCs Vcm = 1.7V, is this the in and output Vcm?
...
1
vote
1answer
30 views
ADC - LVDS/LVCMOS Interface
I want to use the ADS58B18 from Texas Instruments. This ADC is differential and the outputs can set to either LVDS or LVCMOS with programming an internal register.
I have a question regarding the ...
0
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0answers
24 views
Programming CC3200 Microcontroller and Separate Flash Without a Development Board
I have an "Alfie" device which has wifi and USB, but I never
use this device, so would like to change its function.
It uses the CC3200 microcontroller (which has a little ROM)
and a separate ...
0
votes
0answers
22 views
Designing BMS for 4S LiIon Pack
currently I'm working on 4S(2P) BMS mainly focused on TI's ICs.
I'm stuck at the start - First, for now I want to use BQ2954 IC for charger, and BQ77915 IC for balancing and protection.
Now, I'm not ...
2
votes
2answers
58 views
What does a TL062 Op-Amp with output grounded and both inputs connected together with voltage divider mean?
So I'm studying Kilovoltmeters and subsequently using ADC's with resistor arrays and dividers from high voltage power supplies of all varieties.
I've got a good idea as to what they are and how they ...
0
votes
2answers
101 views
What is this transformer, is it package only without coil or complete transformer?
I did a simulation on TI Power Bench for a isolated power supply,
There I got transformer spec in BOM,
Core=Wurth Elektronik , CoilFormer=Wurth Elektronik
Core=150-2340 , CoilFormer=070-4477
Core Type ...
0
votes
0answers
31 views
How to calculate maximum switching frequency of TPS54160
The data sheet of the TPS54160 buck converter (https://www.ti.com/lit/ds/symlink/tps54160.pdf) includes a formula for calculating the maximum switching frequency due to the frequency shift protection.
...
0
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0answers
32 views
PCB header and microcontroller schematics for JTAG connection
I am using f28017f device from Texas Instruments and for my application I have to implement it on PCB. for debugging this device, I need JTAG connection. I will be using xds110 device for debugging. ...
0
votes
1answer
44 views
LM13700 control current appearing as voltage at output?
I've got an LM13700 in this VCA configuration, and for whatever reason the gain control input (I'm applying a triangle LFO, ranging from 2-7v) is appearing as a voltage at the output. Does anybody ...
0
votes
0answers
32 views
Problem using UART0 in TM4C123 Tiva C Launch Pad
I'm trying to interface UART0 with the my laptop using the ICDI
the code I used is from Mazidi's book :
...
0
votes
1answer
40 views
MSP430FR2433 SPI data corrupted
I'm currently working with MSP430FR2433 Micro. I want to interface this micro with the following modules:
LCD screen via SPI (https://www.orientdisplay.com/store/amc0802br-b-y6wfdy-spi-8x2-character-...
0
votes
0answers
40 views
What's up with TI TIVA's SPI controller?
UPDATE: The issue with debugging someone else's code is you just have to assume everything is being coded correctly. I just checked datasheet and there was this BSY (bus busy) flag bit in status ...
1
vote
0answers
43 views
voltage monitor using tps3897 - understanding
Although I have some experience with circuitry it is mainly analog experience.
therefore I can't solve the question i have been given in interview.
I have been asked what does the next circuit do:
...
0
votes
0answers
39 views
BOOSTXL-DRV8323RS Set up - trying to spin motor in 3x PWM mode
I have been following the datasheet for the TI DRV8323 and the BOOSTXL-DRV8323R dev kit. I am trying to spin a BLDC motor by sending 3 SPWM waves (all 120 degrees phase shifted) generated by an ...
0
votes
0answers
15 views
Simulating TM4C123 Tiva C Launch Pad
I have the board and I have done some interfaces with it so far. Now I'm trying timers and interrupts, and I don't have an oscilloscope to examine square waves.
Is there any simulation software for it?...
0
votes
0answers
50 views
How to solve the compiler error of USB debugging probe of C2000 series Texas Instrument Microcontroller?
I am using Launchpad-F28027F to generate PWM for buck converter. I am currently using simple example of PWM from Resource Explorer of CCS but it's no working due to the error shown in the below ...
2
votes
1answer
60 views
Two different ways to open a project in IDE's for MCUs
I am using following 3 different IDE's for ARM based MCU's.
TI's CCS
ST's CubeIDE
IAR's Workbench
I have to move the entire projects which are build on each of these IDE's on different PC's from ...
0
votes
2answers
66 views
What are the draw back of having multiple smps stages in series?
Application
output - 100V 10mA
Input - single cell lipo 3.7V 5000mAh
overall efficiency > 85% required.
I tested Texas instruments power bench.
Texas instruments power bench cannot generate ...
0
votes
1answer
20 views
BQ51050B compatibility criteria
I started another project where I need to charge a few devices (preferably simultaneously) wirelessly. They all have BQ51050B and the corresponding coil/battery.
I need to know what I should look at ...
1
vote
1answer
234 views
LTspice error “could not open Library file” when trying to use TL431 model from TI
I downloaded the LTspice model of TL431 from the Texas Instruments website, but I am not able to simulate the circuit given below due to this error:
"could not open Library file"
https://www....
0
votes
1answer
21 views
Store uart incoming data in sd card interfaced with CC2652RB LP [closed]
I am using TI Simplelink CC2652RB LP for my project.
I have to store UART incoming data in text file created in SD card interfaced with cc2652RB LP via SPI.
Can I use the following logic along with ...
0
votes
0answers
25 views
MIPI/CSI Retimer
I am trying to interface my Jetson Nano with a CSI camera through a SN65DPHY but have been unsucessful so far.
I do know the routing is OK because the second camera, which is closer to the Jetson does ...
0
votes
1answer
38 views
Digital Output as an interrupt Source?
So, I have the Stellaris Card from Texas Instruments. I am trying to make a digital output ...
0
votes
2answers
39 views
TPS54383 Thermal Pad
I'm experimenting with a TI Dual Output Buck Converter, the TPS54383. In section 11.3, on page 43, the datasheet says
11.3 PowerPAD Package
The PowerPAD package provides low thermal impedance for ...
0
votes
0answers
41 views
Tiva-C Launchpad TM4C123 SPI
I'm currently trying to setup an SPI link between a Tiva C series launchpad and an LCD screen I've got lying around. I've configured the SSI0 peripheral according to the manual, and I measure the ...
1
vote
1answer
33 views
S Bracket Transistors and Reverse Breakdown diodes in Texas Instrument 74LS32 DataSheet?
Hi, I have included the image of the schematic of the Texas Instrument 74LS32. Basically the chip consists of 4 OR gates and the schematic shows the logic how 1 of those gates is set up on the chip. ...
0
votes
0answers
33 views
How to generate PWM with different frequencies and duty cycles?
I am going to use TMS320F28027 for PWM generation. I have to generate 5 different frequencies of PWM with different duty cycles at a same time. How it could be implemented? Can I use a single PWM ...
0
votes
0answers
28 views
Having trouble uploading code to TM4C123GXL from Code Composer Studio on Mac
I am using a Mac to develop a program for my TI EK-TM4C123GXL board. However, I am having trouble actually uploading the code to the board. I keep running into the errors below. I copied the header ...
1
vote
1answer
49 views
Zero Crossing Detector using comparator
I followed SNOA999 for a zero crossing detector using TLV7011 as a comparator. I am not sure about short-circuiting grounds between AC and DC power sources. My concern is creating negative currents on ...
0
votes
1answer
89 views
Can I “sum” internal ADC channels to achieve extra bits resolution?
First of all I am a newbie in electronics.
I am building some weight scale applications using (as seen everywhere) load cells wired to a HX711 ADC and a ESP8266. I am now giving a try to the Texas ...
0
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0answers
39 views
BeagleBoneBlack PRU from Scratch
I am a newbie when it comes to embedded systems and I am an even bigger newbie when it comes to working with the BeagleBone Black (Rev C in my case). I want to play and discover the PRU on the BBB, ...
1
vote
1answer
49 views
Wrong SPI Signals in Logic Analyzer
We're trying to send some informations above SPI. So we've coded a few lines of code for that purpose. But in the picture you can see, sometime data cannot be retrieved accurately. The original data ...
3
votes
3answers
60 views
Is 23.8°C/W junction-to-ambient thermal resistance for a TO-220 in this datasheet with or without a heatsink?
I've been reading datasheets all night trying to figure out which LDO linear regular would give me the most current at 3.3V with no heatsink from a 2S LiFePO4 battery (assuming a max voltage range of ...
0
votes
2answers
50 views
What does this mean in datasheet : 2k: Ipgm/10 for term; Ipgm/5 for precharge
I was referencing the datasheet for BQ24040 Texas Instrument IC and could not understand the following statement and what does it actually mean. I am new to this. Can some one explain what does it ...
0
votes
0answers
18 views
Webench coil selection for UCC28634DR AC-DC converter
I have being trying to design an AC-DC adapter for a freezer project I'm working with. After a couple of days researching I came across Texas Instruments Webench, which helped a lot.
Although most of ...
0
votes
1answer
38 views
Unknown schematic symbol in BQ27750EVM schematic by texas instruments
My sincerest apologies if this is a duplicate question. Disclaimer: I did my best to crawl through the forums to see if I could find the answer and after an hour, I am lost. With that out of the way, ...
0
votes
1answer
37 views
Limiting the current with the LM2679
I'm building a power supply, and I'm trying to see if the LM2679 will fit my needs. I like how it's similar to the LM2596 as well as the fact that it has a pin to limit the switch current. However, I ...
0
votes
1answer
43 views
How to check maximum frequency generation capability PWM of microcontroller?
I am new to Texas Instruments Controller. By checking the datasheet how can we come to know about the maximum output frequncy generation of PWM of the controller. Is it related to the clock frequency ...
0
votes
0answers
46 views
What is the most efficient way to convert high Vin DC to low Vout DC? [duplicate]
I need voltage regulator to convert high range of Vin 20-60V to fixed 5 or 12V and the maximum output current is 200mA. What could be the efficient way to do this?
1
vote
1answer
49 views
How to send different data to three DACs at the same time?
I am building ultrasonic system that needs to generate three different signals for three transducers at the same time.The system is controlled via DSP. Currently I have a DAC with 4 outputs, but as I ...
1
vote
0answers
249 views
Optimizations for LM2596, Positive and Negative Voltage
I'm working with the LM2596 to get a positive and negative voltage using two separate IC for each. I'm having trouble optimizing them for a 1 A load. I followed along with TI's WEBBENCH designer to ...
1
vote
1answer
75 views
Saving a variable between reboots on a microcontroller without using flash memory
I am developing a bootloader and have some trouble jumping from the bootloader to the application. As far as I can see the problem is because I am doing certain initializations in the bootloader which ...
0
votes
1answer
36 views
c2000 microcontroller sensorless speed control implementaion
I want to know some detail about TMS320F28335 TI microcontroller for sensored and sensorless speed control of SPMSM. I have implemented the MATLAB simulation and the model is working well but for ...
0
votes
1answer
59 views
Rectifier to Step Down Buck Regulator
I'm trying to simulate an AC to DC voltage regulator. I'm trying to go from 115 Vrms to 5 V DC at 1 amp max, though 0.5 amps nominally. I initially thought of using the LM317 at first, but after ...
1
vote
3answers
101 views
Trying to switch between 12V and 5V, CD4066B analog switch
I want to switch between an output of 12V and 5V. I'm using a CD4066B (datasheet)
Here's the pinout:
This is my schematic:
When I build this circuit, I end up frying the IC. What am I doing wrong? ...
2
votes
1answer
82 views
Stack error when jumping from bootloader to application
I have been trying to jump from my bootloader to an application for a while now but I can not figure out what is going wrong. I am hoping someone here might be able to help me.
I am using Texas ...
1
vote
0answers
57 views
Imprecise bus error when setting Vector Table Offset Register. TI CC2652
I am developing a bootloader and want to jump to the application.
I am new to this so I am not entirely sure I am doing it right, but as far as I know I have to change the value stored in the VTOR (...
0
votes
1answer
42 views
What is a programmable power-up sequencer?
What is a programmable power-up sequencer ?
How to use it in a PMIC to power AM335x TI microprocessor ?
0
votes
0answers
33 views
How can I add a SVCall handler to the Vector Table of a CC2652 device
According to the CC26xx Driver Library documentation there are two options for adding interrupt handlers, one dynamically and one statically. The static registration of handlers seems to be the ...
