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I have a current sense IC powered directly from a battery. I want the current sense IC to be in the shutdown state when the 3.3V power supply is disabled.
I have added a dual N channel MOSFET circuit (see attachments) to achieve a pull down on the shut down pin (active low and internally pulled...
I am designing an embedded product that contains rechargeable lithium Polymer battery packs. The product will have an onboard battery charger which will take a DC input from an off the shelf wall wart.
The product will not be sold to any third party; it will only be used by employees to...
I am designing an embedded product that contains a micro controller interfaced to a cell module (Telit He910). The product will not be sold to any third party; it will only be used by employees to perform a service.
I have a number of questions regarding required certifications:
-Is PTCRB...
When multiple output capacitors are used in an LC filter does it matter where the PCB trace connects to the output of the filter?
Would it matter if the PCB trace was connected between two of the output capacitors or should it be connected at the last capacitor in the chain? (See attached...
I am working on a carrier recovery design and have been experiencing issues. I have attached a block diagram of the design for reference.
The primary issue is that PLL#3 does not lock continuously. This PLL will intermittently lock and is displayed by the lock detect indicator pulsing on and...
FvM,
Am I understanding correctly, to measure the GPS performance doing S21: connect horn antenna to port 2 or network analyzer, connect GPS antenna with LNA (biased to proper LNA voltage) to port 1 of network analyzer, then take S21 measurement?
Thanks,
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FvM,
Am I...
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