Part Number:TAS5825M
Hi,
Changes from Revision C (September 2018) to Revision D of Revision History is described that added Figure 93 and 94 in page 41.
Our customer points it have been changed not only the addition of two Figures but also the startup and shutdown procedures.
If the device startup and shutdown by the procedures of revision C, is there any problem?
Is the device likely to be damaged?
Best regards,
Akio Ito
Part Number:TMDX654IDKEVM
Our customer want to select the clock source for PCIe RC and EP operation on IDK. Resistor options are provided to do that. But some pads for the resistor options cannot be found.
Where is each pad of R245 and R246 on the PCIe card?
Best regards,
Daisuke
Part Number:TL072-EP
Team, one question about the temp. coefficient with TL072-EP.
In the datasheet's E/C table, it says the input offset voltage is 8mV,max at full temp range. however is the Temp Coefficient of the 18uV/degree taking into account on this 8mV,max? Or it needs to be calculated separately?
We're confused about this. Please help to comment. thanks.
Part Number:CC1125
Hi Team,
My customer needs some help with the following questions:
1.The receive sensitivity of CC1125 is low when receiving signals defined by the DMR ETSI TS 102 361-1, which is about -108dbm. Is this due to the lack of a "root rise cosine" filter corresponding to the transmitter at the receiving end of CC1125? If so, what can be done about it? If not, what could possibly cause it?
2.According to the user's guide, we should set the coincident frequency deviation of receiver and transmitter. And we tested when setting different frequency deviation[greater than 0.4khz], the receive sensitivity decreases sharply. Is there any method that the receiver can automatically track the transmitting signal difference of the transmitter within the bandwidth of the channel filter.
3.According to the user's guide, using the FeedBack to PLL [register FREQOFF_CFG] could improve receive sensitivity. We tested all the possible register value, the best receive sensitivity occurs when setting FREQOFF_CFG to 0x38,which is still lower than we close FeedBack to PLL[set FREQOFF_CFG to 0x20], why?
4.Still from the user's guide.we know there is a CORDIC dore inside CC1125,which can get the sampling value of signal amplitude and phase in real time.But the guide is too simple to understand. Register 0x2F84 (ANG1 - Signal Angular after CORDIC [9:8]) and 0x2F85 (ANG0 - Signal Angular after CORDIC [7:0]) store a 10bit phase sampling value.
a. Is the sampling value a signed number or an unsigned number? If it is a signed number, is it expressed in the form of binary complement?
b.What is the Angle range corresponding to the sampling value, 0°~360° or other Angle range?
Any helpis going to be appreciated:)
Part Number:LP8863-Q1
Hi team,
We face a problem regards to LP8863 I2C writing after power up. Refer to datasheet description, register can be access when it shows in standby state.
When power up LP8863, we make sure FSM_LIVE_STATUS shows 0x03. Then write to register address 0x28 with 0x5a5a, and then read it back. It shows 0x0303 which is different with what we write.
We then monitor the FSM_LIVE_STATUS after power up, it shows 0x03 -> 0x1A -> 0x03. The writing problem only happen at first time 0x03, and normal after second 0x03.
Would you please check what is the reason cause this problem. We would like to know when is the proper time to access LP8863 after system power up?
Thanks!
Regards,
Alex
Part Number:DRV104
DRV104 failure on PCB powerup. No output load to circuit during all powerups. See schematics below.
DRV104 application is to power small muffin fans.
Design has worked in Galil systems since 2012 using older TI IC product. Then new Galil product has this exact circuit failing using TI's more recent date codes of the IC.
1. Bad part. Note the package failure eruption near the “R” in DRV104. This is more dramatic than the failed IC in the left most picture presented further below in writeup.
(ALL GRAPHICS REMOVED BY TI TOOLS. PLEASE ADVISE AUTHOR.)
2. After failure, pins OUT1 / OUT2 measure < 1ohm to VS / VPSx
The PCB SN1 of Rev A given to me has three of four fan ICs in this “Output shorted” state.
The following is trying to target a BAD date code compared to a GOOD date code.
LEFT IC IS FROM recent product (BAD?). ::: Right IC is from product 7 yrs ago – not known to fail.
Following statement from TI / Burr Brown datasheet.
Following is a fan driver schematic for the circuit which worked for years and now it doesn't.
Couple Key components:
D8 | 2A 100V | DIODE SCHOTTKY | ON Semiconductor | MBRS2H100T3G | MBRS2H100T3GOSCT-ND |
790mV @ 2A
C123 | 470UF | CAP ALUM 470UF 50V ELECT RAD | Vishay/BC Components | MAL214651471E3 | 4501PHBK-ND |
470µF 50V Aluminum Electrolytic Capacitors Radial, Can 3000 Hrs @ 125°C
or 35V rated caps Rubycon/35PX470MEFC10X12.5
Similar version of circuit which showed same sensitivity as first schematic presented.
Keys:
1. “Latchup” from +24V (VS / VPSx) seems to be more prone to occur when a fan load is NOT present.
2. Failure seems to be within the IC and is SCR like. It is a destructive failure and collapses the 24VDC power supply connected to pins 8, 9, 10. The IC temperature increases dramatically. Ie Power supply current into the IC is well above rating.
Online TI datasheet still references Burr Brown. This IC could be one that may have been moved to a new IC process or had an IC process change as time has passed from 2012 to 2019.
OUTPUT spec.
Failure Issue was first found in TI Silicon around : Thursday, May 17, 2018
Updated version of 2nd circuit schematic presented above which hasn't shown the failure with recent TI silicon. Schottky D57 is key "FIX" component. (TI, please verify this schottky ALWAYS fixes issue and advise.)
Galil can respond with more data as conversation begins.
Part Number:VCA8500BOARD
I have kept a vca8500board ,and now I want design a amplifier consult vca8500board，but in the test i found if I does't use SMA connector on the board,the board can not work,then I want to know how to replace SMA connector while board can work regularly?
Part Number:AM4378
Tool/software: TI C/C++ Compiler
Hi,
Are the following compilers compatible with thread safe?
If so, is there anything like a list of supported functions?
1. ti-cgt-arm_18.1.5.LTS
2. gcc-arm-none-eabi-7-2017-q4-major-win32
Best Regards,
Shigehiro Tsuda
Part Number:TIDM-HV-1PH-DCAC
Dear TI Experts,
My question is related to the kit of Single-Phase Inverter Reference Design With Voltage Source and Grid Connected Modes with part No. TIDM-HV-1PH-DCAC.
I found that there are two options for filter capacitor sensing:
1. The default is sensing capacitor current;
2. And it also gives the possibility to sense the voltage of the cap.
In my project, the voltage of the capacitor is preferred. Would you please let me know what kind of modification I should make in terms of hardware and software. Many thanks in advance.
with kind regards,
Yu
Part Number:UCC28061-Q1
Hi,
The PCN is announced for the UCC28061-Q1.
The content is changing mold compound and die-attach.
Is this PCN affected for Thermal Resistance?
Best Regards,
Kuramochi
dEARS:
For HDMI TO LVDS, is there any single chip solution now? If no, Would you please help to provide multiple chip solution? Thanks!
Part Number:UCC27324-Q1
Hi,
The PCN is announced for the UCC27324-Q1.
The content is changing mold compound and die-attach.
Is this PCN affected for Thermal Resistance?
Best Regards,
Kuramochi
Part Number:TPS74801
Hello
What is differentiation between TPS74801DRCR and TPS74801DRCRG4?
Best regards,
Part Number:IWR6843ISK-ODS
Hi Technical Support
I found "Radio Studio" below.
I would like to use this tool.
How could I get this tool?
Best Regards.
Part Number:HDC1080
Our Customer use HDC1080 design temperature and humidity sensor encountered quality problems. After six months of storage, the humidity of all products increased by about 4% compared with half a year ago, and the temperature measurement is still accurate. Our Customer have already processed the patch according to the suggestions they received before. The patch HDC1080 does not use reflow soldering, but uses a thermostat. In view of this problem, customers hope to get TI more effective suggestions to help them design high-quality products
hello all!
I perform data transmission 1000byte / 1node. subdivided into 10 times of 50 bytes each, 50ms / 1 time. at a distance of 15-20m from the indoor.
ZROUTER1 ------- ZC ---------- ZROUTER2
ZROUTER1 will go to the network first and start sending data first, then ZROUTER2 will go to the network and send data. However, there are some errors as follows:
When ZROUTER2 joins the network and starts sending data for a period of time, then network off, or I won't see ZROUTER2 sending data while ZROUTER1 is still sending.
I use ubiqua to see the parameters:
What do I need to do to solve this problem. Looking forward to the help of everyone!
thank you!
(Please visit the site to view this file)
Part Number:CC2640R2F
Hello,
Could you tell me the configurable minimum value for High Duty Cycle Non-Connectable Advertising on CC2640R2F and the way to set?
We refer documentations in the "doc" folder of SDK (v3.10.00.15); however, the procedure to set and the configurable value can be found.
Best Regards,
Nomo
Part Number:TPS23754
Hello:
TPS23754 PD solution, maximum support 30W output. In TI products, does it support 90W PD solution or 802.3bt Type4 solution?
Best Regards
Leon
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