Re: OP777 4 to 20 ma
Hi Dica, The circuit you have is a an example of a Howland Current Pump/Source. The approximate equation of the output current Io is: Io = Vin x [(1/27kΩ)+(1/68Ω)] The equation is...
View ArticleRe: AD650 F/V converter not working.
Please , can anyone help me out for the above problem. thanksSumit Sharma
View ArticleRe: ADXL362, activities under each mode.
Hi, Sorry to push you when your are busy, is there anyone to add any comment on this issue ? Best Regards,
View ArticleAD7988 Power
I am seeking an ultralow power ADC. The data sheet for the AD7988-1 indicates an energy comsumption spec of 7nJ/conversion - is there a range of sample rates for which this is valid, or does it apply...
View ArticleRe: Having trouble with gain>3 on AD8129/AD8130 with +5v supply
Hi Joe, You are correct that you need a negative supply to get an output of 0V. The AD8129 and AD8130 outputs can only swing down to 1.1V on a single +5V supply, so if you want the output to extend...
View ArticleRe: Having trouble with gain>3 on AD8129/AD8130 with +5v supply
Thanks Jonathan! The more i thought about it, the more i realized i ought to just go with a +-7V or greater bipolar supply. It means i'd have more flexibility to work with my microcontroller supply if...
View ArticleRe: ADE7880 - Energy measurement
Hi r.simoncelli@antgroup.it You will need to set LWATT bit of LCYCMODE register to start line cycle energy accumulation. The LINECYC register can then be used to set the number of half-line cycles for...
View ArticleRe: How to use connect/set XTAL pins on ADV7611?
XTALP is the digital input if you are going to use an oscillator. Make sure it is a 1.8V signal. XTALN can be left floating.
View ArticleRe: ADV7393 Output DAC pin
Hello, Those are not pull downs-- they are termination. If you aren't using them, you can leave them open. Dave
View ArticleADV7181C power up leakage and power sequencing
I have a board with eight (8) ADV7181C's. It happens to have a local power supply that has power sequencing. The 1.8V core voltage comes up before the 3.3V, which is used for the I/O. The timing on...
View ArticleRe: 3GHz HDMI Transmitter
Hi Dave, Unfortunately we don't have a matching TX for ADV7619.Dave
View ArticleRe: AD9889B I2S audio not working
I'm going to refer to thread http://ez.analog.com/thread/7679?start=15&tstart=0 specifically post #19. IT looks like you are not setup the audio info frame correctly.
View ArticleRe: Phase Adjust Phase Resync, Integer-N Phase Adjust
Thanks a lot! Still I have a few questions to understand the process. @2) How does the device decide whether it is locked or not? Is there anything I can do to help generating the "correct" lock detect...
View ArticleRe: Less lines in ADV7180 free run mode NTSC embedded sync capture
Dear Dave, I have following observations regarding NTSC capture:1. In case Extended output control register (0x04 bit [7]) is set to 1 (ITU-R BT.656-4 compatible) then ADV7180 behaves as follows:...
View ArticleRe: AD9789 QDUC mode
What is the frequency of your alternating all '1's and all '0's signal?
View ArticleRe: File corruption when transferring a file from SD card using FTP
I've got most of the application working on our hardware with the new kernel (2012R2-RC5) and testing has so far shown no problems at all with the file transfer. This works for me as a solution, so I...
View ArticleRe: ADIS16480 - How to restore complete factory configuration?
Hi Mark,In the first time after delivery I did not update the flash memory at all.I used an ATXMega-Controller. Program started with initialisation of the ADIS16480: GLOB_CMD = 0x0080 (Software...
View ArticleRe: AD9889B HDMI output 1080P60Hz problem on TV
Hello, We're going to need more information about the problem-- lots of systems with AD9889B have been sold and work in Japan. What is your source video? How are you programming the AD9889B? What TVs...
View ArticleRe: ADV7181C power up leakage and power sequencing
As you have noticed there is leakage from 1.8V rail to the 3.3V rail when the 3.3V rail is more then a diode drop below the 1.8V rail. Normally on your reference boards we bring up both rails at the...
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