Re: ADV7511 has problem to output NTSC 480i
Hi Dave, Thanks a lot. I just talked to our hardware guy. He checked the input to ADV7180, and it is clean. Plus the video output of PAL doesn't have such issue. If there is a noise(ie. ground loop) in...
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Help with Crosscore Embedded Studio
Hi Guys, I purchased the ADSP21469 Evaluation board and have used it with Sigma Studio. I am now wanting to experiment with designs using CES. I am finding it difficult to begin with CES. Are there...
View ArticleRe: Can AD9129 evaluation board be used with Xilinx SP605
You can definitely connect it to SP605. If you are asking about the existing reference design. It may not (most likely will NOT) work. The serdes modules need to be changed. There will also be...
View ArticleAD9250 - Default value of Register Address 0x5e
Looking at register address 0x5e of the Memory Map Register Table on pg. 38 of the AD9250 data sheet, I am wondering what the default value of this register value is? It states the default value is...
View ArticleRe: AD-FMComms2 HDL support for Altera FPGAs
Re: "Just because something mechanically fits, doesn't mean that it will actually work." We're learning that for FMC! 8-} (It wasn't an issue in the relatively small HSMC land). Interesting, we...
View ArticleRe: Programming ADAS1000
Another important thing: If I can't sense signal on OSC1 OSC2 pins and If I have a low signal on REFOUT, SPI can function or I'm wasting my time and I must find a way to solve these problem (I don't...
View ArticleSimple loop vectorization giving wrong result
Hi, I'm using VisualDSP++ 5.0 for SHARC 21369 EZ-kit with optimizations enabled for speed (maximum) and IPO. I'm having a wrong result for the following simple loop when using vectorization: for ( i =...
View ArticleADE7953, will active energyline cycle accumulation mode work if there is no...
Hello, On my project, I used ADE7953. Usually, I use voltage zero crossing interrupt (ZXV flag) to trigger the MCU to read IRMS / VRMS / frequency / peak current, etc. Also I set to active energy line...
View ArticleRe: AD9228 resetting conditions
Hi Moto-san, Indeed, it looks like the AD9228 DRVDD supplies power only to the LVDS related circuits. Bringing DRVDD down-then-up should not affect register contents, but to be safe it would seem good...
View ArticleRe: AD-FMComms2 HDL support for Altera FPGAs
Jeff: No problems. I saw a picture of bare (unstuffed) boards that should work with the Cyclone V System-on-Chip Kit, so that should be here in 4-6 weeks. -Robin
View ArticleRe: Sine Wave on a SHARC DSP 21489 EZKit
Hi Antonio, Since your application involves a SHARC processor, you may find better results posting your question...
View ArticleI2C Protocol ACK
We are having difficulty doing a single write and read using the i2c bus on a ADAU1761 chip. If you look at page 39 of http://www.analog.com/static/imported-files/data_sheets/ADAU1761.pdf, you will see...
View ArticleHi, A question about the difference between the 524 and 624
My question is what is the main difference m between the AD524 and AD624? ...and are there any lower cost alternatives to the 524? Like 8XXX series? My application is for bridge amplification. Thanks
View ArticleRe: Poor CMRR Results with AD620
One additional question. Based on my numbers, -80 dB from a 500 mV input signal works out to 50uV. For the gain resistor I'm using (750 ohm), this works out to a gain value of 66. Does this gain value...
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AD831 Bias Current
Hi again, I am having some problems adjusting the bias current of the AD831. According to the datasheet a resistor must be connected between the BIAS pin and Vp. And for minimum bias current, connect...
View ArticleRe: Poor CMRR Results with AD620
I can't help you with your problem (have you tried to measure the signal with a multimeter instead of listening?) But I can answer you the second question. The CMRR is defined as Ad / Ac. The ratio of...
View ArticleMEMS Accelerometer Selection request
Hi, Currently I am working on a structure health monitoring project and we need MEMS Accelerometer. Could you please tell me is there any Accelerometer is designed for SHM project? If there is, could...
View ArticleADV7625 Script file - I2C addresses
In the script file version ADV7625ES2C-VER.1.2c.txt, the I2C addresses for: HDMI Rx EDID map, reg 0xEDHDMI Rx2 Repeater map, reg 0xF2 are not programmed. Is there a reason for this?
View ArticleRe: AD831 Bias Current
Is this happening on multiple parts? I'm wondering if the ESD is damaged somehow... Joel
View ArticleRe: Poor CMRR Results with AD620
ByronS, What is your source impedance? At a high enough frequency, the difference in the diode capacitance,will make a difffence. When you connect your real source, the unbalance in R69, R70, C68,...
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