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Recent content by FreshmanNewbie

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    Where to get datasheets of this part

    RTS5487 and RTS5413D are the parts which I would like to get the datasheet. Unfortunately, I am unable to find the datasheet. However, these parts are available in 3-party websites. RTS5487...
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    Capacitor size vs Ripple voltage

    I have a question. Does the size of an MLCC 0201 capacitor when compared to 0603 MLCC capacitor of the same value have produce different effects on ripple voltage? Like, does the size of the capacitor (0201 vs 0603) have any impact on the ripple voltage of a power rail?
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    PHY remote testing

    When setting KSZ9131RNX to Remote Loopback, in addition to the register settings, there is a description that says "Connect RX_CLK to TX_CLK". Q1.Does this mean physically connecting Pin to Pin? Q2.If the above is correct, there are no pins named RX_CLK and TX_CLK, but does RX_CLK mean...
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    Slew rate of an op-amp

    I read that the slew rate of an op-amp the rate at which the output voltage changes with time with respect to a step change in input. So my question is will the slew rate of an op-amp depend on external circuit components? Suppose, 1. I have a capacitor at the output of an op-amp. In this...
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    MLT-3 and NRZ and 4B5B Encoding

    In this Ethernet PHY datasheet (https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/DataSheets/LAN8720A-LAN8720Ai-Data-Sheet-DS00002165.pdf), page 14, Figure 3-1, I see the blocks 4b5b encoding, NRZI and MLT-3. I was reading about line coding and it's purpose. One...
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    Thermal vias for an IC

    In this Application note recommendation for ground connection of the thermal ground pad of an IC on page 3, (https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ApplicationNotes/ApplicationNotes/AN18.15-PCB-Design-Guide-QFN-DQFN-Packages-00001843.pdf), I see that the ground paddle...
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    Query on MOSFET

    There's this MOSFET (https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/414/SH8K5.pdf) The gate threshold range for this MOSFET is given as 1V to 2.5V from the table (but from the table I see this value is for a drain current of only 1mA). My question is, I want to get a drive...
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    Using scope terminations

    I am using a scope that has two termination inputs. 1Mohm and 50ohms internal termination on the probe inputs. My question is : 1. Suppose I connect the probe to a USB differentia signal. I connect only 1 probe to D+. The ground of the probe is connected to the ground. Which termination scope...
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    How are these resistors in series and parallel

    This is a really helpful answer for me. Thank you very much. The example you gave is for a node right. In my question, we have two nodes. A and B (from the Figure 2 in the above image). In that case, the equivalent parallel resistance of the two RBs, will be placed across RT2, I understand...
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    How are these resistors in series and parallel

    I was going through the biasing resistor calculation for RS-485 and can across this AppNote (https://www.renesas.com/us/en/document/apn/an1986-external-fail-safe-biasing-rs-485-networks). On page 3, you can see below: I just want to understand how the 2 RB resistors are considered to be in...
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    Reason for having multiple earths

    I have been going through the TNCS electrical system of grounding and noticed that this system has Multiple earths in the PEN conductor. Refering to this link However, I am not able to understand the purpose of the multiple earths. What is the purpose of it and how does multiple earth help in...
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    Connection of Protective Earth in EVs

    I am reading about the Electric Vehicle and their charging. I went through this link - J1772, where the connector image is displayed. The connector has a PE terminal. Going through a lot of material and links, I read that the Protective Earth is connected to a earth rod on the charging...
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    Connections between Ethernet PHY and Switch

    Oh thanks. 1. When you mention TXxx pins are output but have an input arrow, you mean the black arrow, right? 2. Also, Rx pins of KSZ9567 is connected to Rx pins of LAN8840. But in the datasheet of both devices, Rx pins are mentioned as output. LAN8840 datasheet: KSZ9567 Datasheet: But...
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    Connections between Ethernet PHY and Switch

    I am confused. Can you tell me whether this connection is correct?
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    Connections between Ethernet PHY and Switch

    Thank you. So, with my KSZ9567 and LAN8840 RGMII, I need to connect Tx to Rx only, right?

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