Re: ADP1047 some questions
Hi kevin,Thanks for the questions.See the answer below:Current sensing ADC of current loop: Clear description, Gain? What’s the level shift current source? ……{page 12, Figure 7}100uA.How to get IL?...
View ArticleRe: BF706 SPI Slave Boot issue
Your understanding is right.What is “normal interface” between MCU and ADSP-BF70x.Thanks,Jack
View ArticleRe: Unstable, voltage reference of AD7682/AD7689
Dear Harry, Thanks for your reply.What confuses me is that, REF pin can ALSO be used as an output in the "external reference internal buffer mode". It is not mentioned explicitly that REF pin can be...
View Articlefmcomms1 reference design of version1 and version2
Hi, I am using Xilinx ML605 board and AD-FMCOMMs1-ebz (rev B), and I have used ISE 13.4 to implement the pcores from reference design (version1 at 2013) with no-OS drivers in which I only used the...
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3 Stage Battery Charging Circuit
Good Day Everyone! I just wanted to ask if anyone of you has a schematic diagram for a 3 stage battery charging circuit that is efficient enough to charge a deep cycle battery. My input voltage comes...
View ArticleRe: Query about ADF4107's SPI port
The power on reset circuit brings the part up in powerdown when voltage is first applied. Leaving an SPI line high is likely powering the digital logic through an ESD protection diode. This breaks the...
View ArticleRe: REGARDING CROSS-TALK OF ADG1207 LOW CAPACITANCE MUX
Hi,Kindly check the attached schematic to introspect the above issue.
View ArticleRe: Re: REGARDING CROSS-TALK OF ADG1207 LOW CAPACITANCE MUX
Hi,Kindly check the attached schematic for introspection.
View ArticleRe: ADV7850 has noisy audio when switching between CGA and HDMI
Hi GuenterL, If we set HDMI( 0x68 ) Reg 0x1A [4] to Force Audio MuteandHDMI( 0x68 ) Reg 0x1A [0] to Prevent auto unmute Should we stop hearing HDMI audio? Would this be impacted when processing an HDMI...
View ArticleADV7619 HDMI Compliance Jitter Test 8-7 Fails
This is a repost, with additional detail, at the request of PaulS. We are experiencing HDMI compliance 1.4b Test 8-7 (jitter injection) failures at 27MHz/480p and at 222.75MHz/1080p60 deep color (and...
View ArticleRe: ADV7850 has noisy audio when switching between CGA and HDMI
if you force audio mute the output packets should be zero'd out. If you still are hearing 'hum' then I'd look at problems with the sink. Bypassing the CP core allows video 170MHz to pass through the...
View ArticleRe: Re: adp3624 malfunction at about 1A
Dear LucaV, I'm sorry, I forgot to attached the electronic scheme. See here. But even without diodes, the ADP3624 is still working correctly, when the load current is decreased to lower values. At...
View ArticleRe: Re: adp3624 malfunction at about 1A
Jan, the ADP3624 has internal diodes but are not meant to draw much more than 20-30mA, so for higher currewnt you will need external dodes. LucaV
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AD9834 - No signal
Hi everyone, I'm trying to get the AD9834 to work with an 8051 controller. I soldered the device on a TSSOP20 breakout board, connecting it with the controller. The problem: No signal on IOUT at all....
View ArticleRe: ADSP-21489 FFT External Memory
One other thing to check: Go into the Linker options under the Project Options, in the 'General' section there is an option to "Individually map functions and data items". Without this set, the Linker...
View ArticleRe: Debug data on DAC is not same as debug data on ADC?
so we don't have to keep going back and forth, With the current FMCOMMS1 board you can not recover the exact bits that yo utransmit, on the recieve path. If you are asking us why we used 16 bit DAC and...
View ArticleUse both samples on AD7746 EVAL board?
Hi all, I have been using the AD7746 Evaluation board and noticed that two samples of the chip are on board. Basically, I want to know if and/or how one could use both chips simultaneously to monitor...
View ArticleRe: ADUM6404: Not starting internal DC/DC after short power interruption on...
Markus: Yes, the startup problem that was found and corrected on the ADuM640x could have a problem with a short power down, but restart for a longer power down. The datecode 1051 would have the...
View ArticleRe: AD9739A + ML605 Fifo Buffer
The DDR can not keep up- this is a system level issue that you can not solve with software (VDMA).You need to modify the design to have the VDMA write to a buffer and let DAC read from this buffer.You...
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