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howardtang85,
you must also inject the 100mv signal only to the ADC input and measure its power using fft method, then subtract result of the first measurement from second.
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for reliable contacts always use gold plated connectors. tin plated connectors suffer from oxidization and after that you will see the bad results.
complex systems (like measurement instruments made by hp) always use gold plated connectors and work for decades and only need regular calibration...
I think micro-scratches which is created on metal pins during insertion of the connector in the jack solve the problem.
gold on plated connectors will not oxidize so preserves the scratches fresh.
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1. you could make the balun with just one inch of 50 ohm coax cable. at one side shield and center wire is the differential input and other side the center wire is single ended output if the shield is connected to ground. it is a simple transmition line transformer. it is recommended to use the...
as a rule of thumb for all resistive negative feedback Opamp gain blocks Gain x Bandwidth is constant. you can find this value in datasheet of the opamp you are using; its unit is frequency unit (MHz) since gain has no unit!
for example if Gain Bandwidth of the opamp is 1 MHz and you have...
Linear regulators like LM7809 do not need minimum load for proper operation. in fact the need minimum input and output capacitor (~1 to 3.3 uF).
I think the minimum current rating of the solar panel (as you say) is minimum current that it could produce, so there is no need for minimum load for...
I think Analog Devices integrated transceivers do the job:
https://www.analog.com/en/rfif-components/rfif-transceivers/products/index.html
of course they do not work stand alone and you will need a micro controller!
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Depending on the frequency you are working on; in low frequencies (~100 MHz) there is no problem with additional small (1-2 cm) stubs, but at high frequencies (~1GHz) stub length must be as small as possible to reduce its effect on frequency response. also it is possible to use series jumpers...
it depends on the load type, but usually some type of isolation is necessary to prevent electrical shocks. the simplest yet high performance feedback isolation is opto-coupler which consists of a voltage reference (e.g. TL431) and an error amplifier (opamp or TL431 itself). also compensation...
First check development kit documents of the CP21XX.
for minimal implementation of RS-232 which uses only Rx and Tx you will need only a Phy. like MAX232.
also for RS-485, a line driver/receiver IC like MAX485 is all you need.
maxim and analog devices have several interface (RS232 and RS485)...
I think gold plated connector could do that, but it would be much better to amplify such a low signal lever before transmitting it on cable.
Working on low level signals, EMI would be very important. using shielded coaxial cable like 50 ohm rg-316 and SMA or SMB connectors could reduce such...
If allegro PCB currently installed, check if it can open the .brd file. please note that altium can only open ascii format of allegro. so it needs allegro installed and working properly to translate binary format to ascii first.
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please note that the current and power ratings of power mosfets specially smd ones is depending on mounting conditions. using power pad , via holes near the device and large copper planes reduce thermal resistance. without this precautions junction temperature will rise and this will increase...
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