Forum Post: RE: TSW1400
Hi TI,I using the DAC 3085 evm along with TSW 1400 evm.The input is a complex LTE waveform.LO is 1960Mhz DAC 3085 EVM is externally referenced with a 10 Mhz input.Attaching a ppt with Spectrum analyzer...
View ArticleForum Post: RE: TSW14J01 Capture Depth
Dan,In the Transceiver firmware, there is a total of 256K (16bit) samples of memory for ADC capture and another 256K (16bit) samples for DAC pattern generation. This would allocate 64K per channel for...
View ArticleForum Post: RE: ADS8556 /RD
Hi Tom,You are correct, /RD is used only in parallel mode. You can ground RD by placing a shunt jumper on J4 covering pins 5-6.
View ArticleForum Post: RE: ADS8556 EVM heat
Hi Tom,Yes, you can reduce the HV supply to reduce power dissipation. You just need to ensure you have the minimum headroom for the amplifier supply based on your input voltage.
View ArticleForum Post: ADS1299EEG-FE Demo Kit - Daughter-board schematic discrepancy
Hello,The schematic for the ADS1299 daughterboard (slau443.pdf or http://bit.ly/17xnw89) indicates that CLKSEL is connected to J3:2 via JP23. However, the daughterboard pcb labels J3:1 with "CLKSEL",...
View ArticleForum Post: RE: ADS8556 SDI
Hi Tom,Figure 38 is related to SW mode (serial on the top half, parallel onthe bottom. I'll look into this a little more regarding the detail on page 27 and let you know what I see.
View ArticleForum Post: RE: ADS8556 CONVST glitch - 2nd assertion of BUSY
Hi Tom,Can you get a screen capture showing a little more detail? Can you zoom in on the CONVST, and perhaps trigger on the falling edge?
View ArticleForum Post: RE: ADS4149 "High Performance" Bits
I should have added a few more details...We are using the LVDS interface for data and clock with a 250 MHz frequency. The ADC has a number of configuration settings related to LVDS voltages, we are...
View ArticleForum Post: RE: Improving the Quality of Playback and recording using...
If you can forward your schematics and register settings, i will be happy to take a look.
View ArticleForum Post: RE: PCM1795 How to change DSD Mode to PCM Mode
Kato-san,SCK must be on all the time. It is the system clock which is required to operate the digital interpolation filters and DAC modulators (see page 17 in the datasheet). BCK must be low for DSD...
View ArticleForum Post: RE: THS1207
Any available detail?I have suspected a timing issue, as well. We are running 4 channels of continuous conversion. Based on the sync pulse location, we are getting the channel 1 reading in the correct...
View ArticleForum Post: RE: Self offset calibration ADS1247
Hi Juan,The communication appears ok, but the timing is wrong for DRDY. The sample rate is more like 1.5ksps instead of 2ksps. What value are you using for DVDD? Your scope shots show less than 1.5V...
View ArticleForum Post: RE: DAC3482: interpolation x8, noise floor increased
Hi Ashwini,The DAC348x family output compliance voltage is rated for -0.5V to +0.6V range for each pin (i.e. Ioutp/Ioutn). Therefore, exceeding the compliance voltage could cause higher distortion...
View ArticleForum Post: RE: Analog signal quality problem above 10 HZ in DAC8568
Hi Mahesh,Just let me know if you need anything else.
View ArticleForum Post: RE: TVP5150 initialization fails
I think your best bet is on an Android forum. All I can help you with is the hardware configuration.BR,Steve
View ArticleForum Post: RE: help for ads1232
Hi Chintan,You haven't told me the capacity of the load cell (total measured weight for the load cell being used) or full-scale deflection (1mV/V, 2mV/V, etc.). Let's do an example. If the capacity...
View ArticleForum Post: RE: ADS1230 interfacing 8052
Hi Ajit,Think about this another way. Your weight calculation is the code span times the grams per code. Grams per code is the long decimal number and is roughly 55.9mg per code (count) which is your...
View ArticleForum Post: RE: low print quality of slou351 (TAS5548's evaluation board)
Hi,swru251a file has a very low quality schematic on page 25. Would you please send me the high quality version?Ali
View ArticleForum Post: RE: AIC3254 transition from EVM
Continuing my conversation with myself.. I've found that the AVDD voltage drops when I program the DSP coefficients and instructions. If I don't load the DSP stuff, then the voltages are correct and...
View ArticleForum Post: LMP90100/90080 input protection
Hi - I'm looking at the LMP90100 AFE, but see that the input abs. max ratings are -0.3V to VA+0.3V. My VA is 2.5V.I cannot find what input protection may be provided on-chip in the datasheet, if any.As...
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