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AFE4300: Would this schematic work?

September 16, 2019, 11:42 pm
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Part Number: AFE4300

I have an AFE4300 and wanted to do a simple impedance measurement. If I make this simple schematic would it work? Here Electrode1 and electrode2 would be used to measure the impedance.

(Please visit the site to view this file)

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ADC121S051: ADC121S051 Higher Clock Voltage than Supply Voltage

September 16, 2019, 11:50 pm
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Part Number: ADC121S051

Hello,

is it possible to run the ADC121S051 with a 5V clock signal, while the supply voltage is 3V?

Regards
Tobi

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AM26C32C: AM26C32CNS support Multi-drop?

September 16, 2019, 11:51 pm
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Part Number: AM26C32C

Hi,

Please let me know whether AM26C32CNS supports Multi-drop function.
In other words, Does AM26C31 connect many AM26C32 devices?

Thanks and best regards,
M. HATTORI.

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SN74LVC4245A: CAN use as 3.3V to 5v converter

September 16, 2019, 11:51 pm
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Part Number: SN74LVC4245A

Hello,

I want to use 74LVC4245A for one of my project for converting 8 signals from 3.3V into 5V level.

Please find the attached image.

Can I use this for my application? Also  I need to control 2 MHz VSPI &HSPI clk and data lines,is it possible by using the same ic?

Kindly check it and let me know your comments. please consider this as an urgent case.

Warm regards.

Monisha OM

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CCS/TDA3MA: vcop_malloc return 00000000

September 16, 2019, 11:52 pm
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Part Number: TDA3MA

Tool/software: Code Composer Studio

When I use this command sum_bufferBlk = (ArcN_S64*)vcop_malloc(VCOP_WMEM, sum_bufferAllocSize); the sum_bufferAllocSize is 32768,  sum_bufferBlk is 00000000。

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UC1844: UC1844J

September 16, 2019, 11:55 pm
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Part Number: UC1844

Hello!
I will be very glad if anybody can tell is that original IC marking, or not?

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CC1312R: EMC emissions

September 16, 2019, 11:58 pm
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Part Number: CC1312R

Hi,

two questions about the CC1312. I noticed that the datasheet for CC1312 shows significant degradation of the spurious emissions compared to the CC1310. I am assuming that this is related to mainly the 48MHz spurs in the CC1312.

Q1) In the CC1312r datasheet (under 861 to 1054 MHz - Transmit TX) the Spurious emissions (excluding harmonics) are separated into ETSI restricted bands and ETSI outside restricted bands. Could you tell me what these restricted bands are? I have seen restricted bands under FCC but not ETSI so I am not sure which bands you are referring to.

For 14dBm setting outside restricted bands typical emissions are specified to -36dBm (for 30MHz to 1GHz). Converting -36dBm with an antenna gain of 0dBi gives a radiated electrical field value of 59dBuV/m @3m. Using the more conservative spurious emissions value in restricted bands of -54dBm gives an Electric field of 41dBuV/m @ 3m.

Q2) For ETSI conformance testing against Red 3.1(b) normally EN 301 489-3 is used for short range devices; The emission requirements during transmissions is specified to 42dBuV/m (between 230MHz and 1GHz). Have you done any EMC emission testing for the CC1312 against EN 301 489-3? Can you give some guidance on how the CC1312r is expected to pass EMC certifications? Of course EN 300 220 will pass, is this enough to show conformance against RED?

Best Regards

Peter

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TUSB1210: TUSB1210 USB to USB OTG solution

September 16, 2019, 11:59 pm
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Part Number: TUSB1210

Dear,

we saw the TUSB1210 datasheet, but cannot support USB to USB OTG right?

If any suggestion, Please advise me.

Thanks,

Best regards,

Johnny

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OPA333: ECG applications for MSP432

September 16, 2019, 11:59 pm
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Part Number: OPA333

Dear TI

I'm trying to follow this ECG data acquisition system using both the slau516 TI design and the MSP-EXP432P401R because I wanted to use MSP432P401's 14bit ADC resolution.

http://dev.ti.com/tirex/explore/node?node=AHOd54BDOOfHehF2Wtdavw__z-lQYNj__LATEST

I want to use the MSP432 to read and provide the ECG data using UART. Do I only need the "ECG Front End with RL Drive" part and connect that output to the ADC pin? It would be appreciated to get support on how to work with ECGs using the MSP432. I'm also curious whether I have to use OPA388 instead of the INA828.

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TUSB1064: TUSB1064 power consumption

September 17, 2019, 12:01 am
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Part Number: TUSB1064

hi sir:

Customer test TUSB1064 power consumption, and test result over Spec typical value. (3.21V / 226mA)

please help check the Maximum value of TUSB1064 power consumption.

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CC3220SF-LAUNCHXL: Accessing DWT

September 16, 2019, 11:58 pm
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Part Number: CC3220SF-LAUNCHXL

Hi,

I'm trying to configure the DWT_CTRL register and enable the CYCCNT. I don't have much information on how to write to this register.

I'm using Code Composer Studio v8.

Please Help

Thanks

Prakash

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WL18XX-BT-SP: LMP KNOB(key negotiation of bluetooth) mechanism as per errata 11838 for WL18xx is handled in controller or Host state machine is responsible?

September 17, 2019, 12:08 am
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Part Number: WL18XX-BT-SP

BT-SP v4.4 release notes says:

This service pack release updates default value of minimum LMP encryption key size to 7 octets to comply with the Bluetooth Expedited Errata Correction 11838. The minimum LMP encryption key size was set to 5 octets by default in older releases.

However Errata 11838 requires:

  1.  Master sends Lsug = Lmax.
  2. If Lsug = Lmax , slave shall respond with LMP_accepted and Lsug should be used as key size.
  3. If Lsug,m > Lmax,s, the slave shall send back an LMP_encryption_key_size_req PDU including the slave’s suggested key size Lsug,s = Lmax,s
  4. And other such scenarios.

So these set of message sequences for key size consensus btw master and slave is part of controller or one should handle it in Host state machine?

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BUF16821-Q1: COM1/2 & OUT1-16 Current Definition

September 17, 2019, 12:11 am
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Part Number: BUF16821-Q1

Dear, Sir.

My customer is considering to apply BUF16821-Q1 for their system.

I would like to confirm following.

1. I supposing VCOM1/2 will be for COMMON voltage. And OUT1-16 will

   be for pixel driver. I wonder my understanding is correct?

2. According the datasheet, VCOM1/2 current is defined on 100mA

   source/sink. Does it mean the maximum current for those 2ch considering the

   junction temperature under OUT1-16 all on?

3. OUT1-16 current is defined on 10mA source/sink. Does it mean the maximum

   current for all 16ch considering the junction temperature under VCOM1/2 all on?

4. The datasheet is defined "Continuous output current" as 30mA.

   What is the meaning of this definition(30mA)?

Please give your advice.

Best Regards,

H. Sakai

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TPS2554: TPS2554 current output leakage concorn

September 17, 2019, 12:11 am
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Part Number: TPS2554

Dear,
we are going to design TPS2555 into our current schematic; however, we have a bit concern about the output voltage leaked back to input, when we implement OTG solution.
If any suggestion, Please advise me.
Thanks,
Best regards,
Johnny

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TDA2EG-17: IPU hung when VpsHal vpdmaLoadFirmware

September 17, 2019, 12:13 am
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DAC38J82: NCO

September 17, 2019, 12:26 am
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Part Number: DAC38J82

Hi team,

I am not familiar with JESD204 and DAC38J82, but the customer asked the following questions, please help answer them.

Can the NCO of DAC38J82 output without JESD204 input? In other words, DAC38J82 must be input by JESD204 interface before its NCO can be output?

If the problem is not clear, please point out.

Best Regards,
Amy Luo

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TMS320F28335: TMS320F28335

September 17, 2019, 12:27 am
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Part Number: TMS320F28335

I am using a triggered sub-system in Simulink with ADC triggered. I need to generate however two different switching frequency for my dc-dc converter and the H -bridge inverter. How can I do that inside the triggered sub-system?

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CC2640R2F: looking for the example

September 17, 2019, 12:29 am
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Part Number: CC2640R2F

Dear Sir?Madam,

i'm looking for an example in CC2640R2F SDK (2_40_00_32) version. the concept is that i have to make to devices for the transmission and receiver so for the both functionality i'm using one CC2640R2F as master or one CC2640R2F as master.so idea is like i have send some data from the master to slave so for that i have connect two devices automatically and if connection has been lost i have re-connect both device and that also suppose be done via auto-reconnect functionality.

So is there any example available ? so i can use that example for master and slave.

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DS250DF810: some quesitons about the EQ setting in DS250DF810

September 17, 2019, 12:31 am
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Part Number: DS250DF810

Hi Team,

Customer has some quesitons about the EQ setting during optimizing the performance of DS250DF810.  

1.How to disable TX EQ function?

2.How to disable RX EQ function and check RX EQ value?

3.Could you have any suggestion to this special value in RX EQ aimed at 1m and 3m DAC cable

Could you give some comments?

Thanks a lot.

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UCC28951: GDT Output Signal Distorted

September 17, 2019, 12:31 am
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Part Number: UCC28951

GENTLEMEN, THIS MIGHT BE A LITTLE OUT OF YOUR SCOPE, BUT I CAN SURE USE ANY KNOWLEDGE OF SOLVING THIS PROBLEM INVOLVING GATE DRIVE TRANSFORMERS. BELOW I HAVE GATHERED ALL THE INFORMATION ABOUT THE PROJECT INCLUDING PIC OF THE WAVEFORM THAT IS OUT OF WACK.
Great Signal Entering Gate Driver UCC27324, Great Signal leaving Gate Driver, But signal On Secondary of GDT is just not the correct Signal.
AFTER REVIEWING THE DATA BELOW, I CAN ONLY THINK OF ONE QUESTION:
Question: WHAT WOULD BE PROBABLE CAUSE OF THE SIGNAL DISTORTION?
THANK ALL OF YOU AT TI TECH SUPPORT. Please note that I have been a little disgruntled and do apologize for that.

SEE LINK BELOW FOR PICS, DS, Questions

 

/cfs-file/__key/communityserver-discussions-components-files/196/TI-E2E-UCC28951-GDT-Output-SiGNAL-dISTORTION--17Sept19--0024.docx

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