Forum Post: RE: Questions on CFB Capacitor
Hi,1, What do you mean by saying: I wanted to know how I will be able to achieve a proper 1Vp-p on the CFB pin using this?2, You can refer to the datasheet: Page 13.Regards, Sunny
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Forum Post: RE: MCLK for TLV320AIC3120 slave AIC
Hi, Pavel,1. We don't suggest do it like this: It may casue some asynchronous problems adn will have some bad samples.2.If your GSM have to do master,we suggest do it like this:Please kindly see this...
View ArticleForum Post: I2S to USB Audio
Are there any products that will allow me to send 24 bit/48 kHz stereo I2S data over usb? I am trying to record audio data on a PC so it will only need to be I2S to USB, not USB to I2S.Thanks,Pedro
View ArticleForum Post: RE: LM 2907
I believe the input signal into the LM2907 might be causing the problem. Can you try inputting a clean square or sine wave from a f/n generator into the LM2907 to see if that solves the issue?When I...
View ArticleForum Post: RE: 3channel ADC 24 bits for AM carrier frequency 100kHz
thanks for ur answer RobertoI need to sample a 100kHz carrier frequency that contain 200Hz changes in amplitude (as in amplitude modulations).So far I used a 16bit ADC and undersample the signal at...
View ArticleForum Post: How can i guarantee a Global Power Down status of the ads62PXX...
Hi!Briefly, my question is, when the ADC's reset pin is connected to a controlling pin of another chip ( NOT hare wired to ground, and this controlling chip and the ADC are powered up at the same time....
View ArticleForum Post: RE: TVP 5158 register allocation
You cannot randomly access the VBUS registers like this. Do not access registers which you do not intend to access.Do not write to reserved registers. This is clearly stated in the datasheet, section...
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Forum Post: ADS1299 GPIOs
Hi, i use the ADS1299 in the attached layout. I use an external Oscillator that can be enabled with the ADS1299's GPIO2. CLK_SEL is driven by GPIO3. For now i don't want to use the external oscillator,...
View ArticleForum Post: RE: THS8200 issue
Syed,I am not sure what you mean by "Main processor is working with different resolution LCD modules.(320x240), (800x480), (640x480), (1024x768)" ?The THS8200 MUST be configured in a mode which...
View ArticleForum Post: RE: How can I define sampling rate of DAC ?
Kenji,This depends on whether you require the output to fully settle or not. You can write the a give DAC as quickly as the digital interface allows you to, but the output may not settle.If you want...
View ArticleForum Post: RE: MCLK for TLV320AIC3120 slave AIC
Hi,Pavel,I know your siuation because your FAE has post it.But I am sorry I don't notice PLL_ClKIN is 512Khz-20Mhz.It seems 256hz BCLK is too slow for the PLL.Independent MCLK will be asynchronous with...
View ArticleForum Post: RE: ADS1x9xECG-FE kit contents
Hi Rakesh, The EVM generates the analog and digital supply rails for the ADC using the main power rails on the J4 header. Section 5.2 of the User's Guide explains the supply rails that are available...
View ArticleForum Post: Getting Started DAC5688 NCO setup
Hello,I have been using a DAC3283 for the past two years and just recently had to change from one COTS board to another with a DAC5688. Unfortunately, I am finding the use of the full mixer rather...
View ArticleForum Post: RE: ADS1258
Hi Kazem,Welcome to the TI E2E Forums!The differential input impedance is impedance while the ADS1258 is sampling the input. The switch time delay will postpone this sampling; therefore the input...
View ArticleForum Post: RE: DAC8581 tUPDAC timing
Thanks so much for your (and Eugenio's) help--very illuminating. I have attached a partial schematic, but it may not tell you much by itself. The board is intended for one product as-is, with...
View ArticleForum Post: RE: Questions on CFB Capacitor
HI，Don`t worry about the wobbling, use 1kohm resistor across the pin, change the caps until the signal on the CFB is about 1Vpp will be good, just about 1Vpp will be ok.Regards, Sunny.
View ArticleForum Post: RE: how to use ADS42LB49 full-range when the input is only positive
Hi Anil,Thank you for the explanation.Unfortunately there is no setting to make the ADC treat an input signal of 0V as +/-0.625V. The only way I can think of is to use a fully differential amplifier...
View ArticleForum Post: RE: LM 2907
At low frequencies, your C2 cap would have to be very large to reduce the ripple at the output. You would see very slow response times in this situation. I would not recommend LM2907 for this low of a...
View ArticleForum Post: RE: Dynamic DAC_ATTEN value change of audio codec
Hi,My main idea is to make this:#include "L138_LCDK_aic3106_init.h" // codec AIC3106.#include <math.h>#include <stdio.h>#define BUFLENGTH 10//int16_t mic;int inbuf_ptr;//float mic, cancel =...
View ArticleForum Post: RE: TSW1400 firmware for 2 wire 14 bit use of ADS6445
Hi,I have tried the new ini files with an ADS6445 EVM. Please see attached for the ini files for the quad and dual options. The firmware should already be in the HSDCPro installation. One wrinkle is...
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