ADN8834, Amplifers
Hallo, are the two chopper stabilized amplifers inside the ADN8834 on while the chip is in standby. I plan implementing a digital control loop arournd the AD8834. It want to use one of the amplifiers...
View ArticleADN8834 evaluation board supply current
Hello Our customer will evaluate ADN8834CB-EVALZ.He set the resistor value for setting of maximum TEC current 700mA ,but the measurement result is not expected measurement reuslt.We concern if we use...
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ADN8834 OUT2 oscillation at cooling mode only
Hello Our customer will use ADN8834 and evaluating ADN8834CB-EVALZ.At initial setting with his laser module including TEC and thermistor, OUT2 is oscillated.So he aligned the C and R around OUT2.As...
View ArticleHaving noise problems w/ AD1988A / ASUS/ M2N-SLI Deluxe
I have the latest drivers and a creative 7.1 speaker setup. My monitor is a Olevia 42 inch LCD TV. I have this background hum. Just like when a guitar is plugged into an amp. There are times when it...
View ArticleADF7021 series transceivers
Having to design a new family of narrow-band, VHF and UHF transceivers based on the ADF7021 series of chips, I would be very grateful if i could get some info about: a) The fundamental differences...
View ArticleMesh network with ADF7021
Hi all, I have interfaced an ADF7021V for transferring a realtime biomedical signal. Now I would like to create a mesh network for data transfer with this device. Is the higher layer protocols...
View Articletime-to-digtial or time-to-analog converter
We need to measure the time duration between two pulses (separation range 5ns to 40ns, resolution <200ps, >50k measurements/s). I searched analog.com but did not find any chip dedicated for such...
View ArticlePSpice models
Hi Engineers, I am trying to simulate a circuit on my PC using one of Analog Devices models, "ADA4817 SPICE Macro Model" I am having trouble using this circuit model file and finding information on how...
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ADN8831 - Switching Noise
Hello, I'm having trouble with switching noise from the ADN8831 appearing on the OUT1 pin (Temperature monitor pin) as can be seen in the waveform screenshot. The noise seen is almost 600mV in...
View ArticleADF7021 with external Rx/Tx switch (ADG919)
Hi, we have made and are using RF modules based on the ADF7021 transceiver with it's internal Rx/Tx switch. So far we are very satisfied with its performance. But we would like to go one step further...
View ArticleProblem starting EVAL-AD9837SDZ software
Analog Engineers, I have two EVAL-AD9837SDZ boards that I would like to program on my computer, but I am having an issue getting the software to open. The program can't locate the LabVIEW Run-Time...
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Controlling digital potentiometer (AD5142) by Arduino UNO
Hi, I am trying to control digital potentiometer (AD5142) by Arduino UNO.Here is the pin configuration of AD5142.I connect SCLK pin to 13 pin of Arduino (serial clock pin), SDI pin to 11 pin of Arduino...
View ArticleDifference between ADN8834CB-EVALZ and ADN8834MB-EVALZ
What is the difference between ADN8834CB-EVALZ and ADN8834MB-EVALZ? Do you have any additional information or datasheet for the eval kits?
View ArticleADF7020-1 question
I want to be able to offer two frequency ranges, one being ~600MHz and the other being ~900 MHz. I'm wondering if I can expand the range of the 7020-1 to get up to the 900MHz. It looks like the -1...
View ArticleLithium Iron Phosphate batteries
I am using Lithium Iron Phosphate 3.7volt cell @ 4700mA.hour rating. I want to make batteries with output voltages of 24volts and 32volts. They will be recharged from photovoltaic panels only. 7...
View ArticleQuestion about test setting of ADN8834
Hello, My customer wants to confirm the performance of ADN8834 using EVM first.And they are trying to test a ADN8834 EVM and TOSA module with Thermoelectric Cooler (from NeoPhotonics.) During the test,...
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ADN8834 OUT2 oscillation at cooling mode only
Hello Our customer will use ADN8834 and evaluating ADN8834CB-EVALZ.At initial setting with his laser module including TEC and thermistor, OUT2 is oscillated.So he aligned the C and R around OUT2.As...
View ArticleControlling AD5204 or AD5206 digital Pot with Python or Java SPI
Hello; I am at my wit's end. I am trying to create a generic Python s/w application for the Raspberry Pi (via SPI) that will control the AD5204 or AD5206digital Pot. I have been successful using the...
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AD5142A as T-attenuator or voltage divider
Hello, I just designed a moduled AGC-circuit. Amongst other things there is a fixed gain module and an adjustable attenuation moduel (AD5142A). I got problems with the attenaution module. It's just a...
View ArticleADN8834 evaluation board supply current
Hello Our customer will evaluate ADN8834CB-EVALZ.He set the resistor value for setting of maximum TEC current 700mA ,but the measurement result is not expected measurement reuslt.We concern if we use...
View Article