New answers tagged integrated-circuit
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Long Term Drift of IC
Not a clear way to notate it, but my interpretation would be:
kHr = kilo hours = thousands of hours of active use
total drift = drift rate 60 ppm/√kHr * √time = 60 ppm/√kHr * √3 = ~104 ppm
The ...
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Find inductor for XL6019 circuit boost converter
So you need to step up 5V to 12V and have 2A output current. This means that the average 5V input current is 4.8A, assuming no losses.
Even if the average output current is 2A, the inductor needs to ...
- 113k
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Find inductor for XL6019 circuit boost converter
If you step-up 5 volts to 12 volts and draw 2 amps from the 12 volts, then, by conservation of energy (and power), the current on the 5 volt side is 4.8 amps. That's average current.
Taking ...
- 419k
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I designed a PCB around the IP5328P powerbank SoC and it is not working. Why?
Maybe the problem is the VSYS net. In the circuit diagramm I see no connection from pad 8,9 to pad 22, 23, but this connection is required.
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Where do I hook up a speaker in this schematic?
The speaker connects where RL is on your bridge amplifier chip. The app note says 16 ohms so you know that a 16 ohm speaker can be safely connected. If your intended single speaker is lower than 16 ...
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Where do I hook up a speaker in this schematic?
\$R_L\$ is the speaker (16ohms impedance!) and the capacitor/resistor across it are a Zobel network for reducing the reactive load on the amps.
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74HC221 negative edge trigging
I find an alternative solution because RX and RX/CX pins aren't functional i think.
So in edit properties window for component there is "Monostable Time Constant" value. Default value is 1 ...
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74HC221 negative edge trigging
The equation for calculating the values is on page 1 of the datasheet. Also, figure 8 shows the relationships among R, C, and time.
For your desired time period, you can pick approximate R and C ...
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74HC221 negative edge trigging
The TI 74HC221 data sheet clearly shows (on page 2) where the RX,CX components are connected.
For proper operation follow the truth table (same page), be sure you satisfy all input pins.
Input \$B\$ ...
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Chip identification possibly SPI driver
The AD1650 is most probably some kind of clone of TM1650, which is LED Drive Controller / Keyboard Scan ASIC some info http://www.datasheetcafe.com/tm1650-datasheet-led-controller/
The chip ...
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Bridgeless totem-pole PFC controllers
Currently, as of March 2023 few manufacturers offer integrated solutions for bridgeless totem pole PFC.
The three main design choices are:
Available integrated solution: NCP1680, NCP1681, IMC102T-...
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What is pulse-by-pulse shutdown and latching PWM to prevent multiple pulses?
This is an older part. THe PWM pulses occur at the oscillator frequency. The data sheet is touting the fact that when a shutdown signal is asserted during a PWM pulse, the pulse is truncated. ...
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How can standard cells of a process design kit have multi-Vdd?
Increasing VDD will basically reduce the delay of the standard cell. Depending on the speed needed for your circuit, you can choose the VDD. If it is a very low speed circuit that you are designing, ...
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How can I use an LM310 as a voltage follower?
I refer to this datasheet.
This is how you do it, if your input source has an impedance of less than 10kΩ:
simulate this circuit – Schematic created using CircuitLab
If the signal source at IN ...
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How can I use an LM310 as a voltage follower?
The LM310 is a voltage follower. It has no other function.
The +12,-12supply voltage is in range. But heed the advice in the datasheet shown in the image. To get a 10 volt output you need a 15 volt ...
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What are the activation functions that can be generated using op-amps and filters?
I'm not sure how useful any of this will be, because all these suggestions only approximate those functions, to varying degrees, but here goes.
The simplest \$tanh\$ implementation I can think of, is ...
- 16.3k
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What are the activation functions that can be generated using op-amps and filters?
Log / antilog type functions can be constructed from op-amps plus junction devices including transistors and diodes. They exploit the exponential I vs. V characteristics of their ‘knee’ area. (Search ‘...
- 48.2k
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What are the activation functions that can be generated using op-amps and filters?
The primary purpose of an activation function in an artificial neural network (ANN) is to create a non-linearity between layers. A purely linear combination of layers of weights and values can be ...
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Voltage requirement for integrated circuits
The short answer for low core voltage in IC's: obtaining improved power, speed, density and cost made possible by ever-shrinking process nodes requires a co-dependent relationship with core voltage.
...
- 48.2k
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Are \$V_{SS}\$ and ground the same in integrated circuits?
Strictly speaking, Vss is the voltage associated with the n-MOS source terminal (itself called Vs), and Vdd is associated with the drain (Vd). Vdd is generally taken as the more-positive of the two. ...
- 48.2k
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Are \$V_{SS}\$ and ground the same in integrated circuits?
In the most general sense, VDD and VSS can be whatever they need to be for your application, keeping in mind absolute Vdd-Vss limitations and your input levels. Internal to the IC, it only cares about ...
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Are \$V_{SS}\$ and ground the same in integrated circuits?
In power electronics (tagged in the question) and analogue electronics, \$V_{SS}\$ can be a negative supply voltage hence, without further constraints, you cannot say that GND and \$V_{SS}\$ are the ...
- 419k
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Replacing broken pins/legs on a DIP IC package
If you MUST repair an IC package as described then you already nailed it - flux. A good flux will allow you to perform miracles when it comes to soldering. Otherwise a new IC is always the answer. ...
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What types of power rail are there in an integrated circuit?
The example you show has a CMOS FET pair, connected as an inverter, that provides paths to VDD or VSS (GND) depending on the input state.
Think of it as a single-pole, double throw switch that’s ...
- 48.2k
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Replacing broken pins/legs on a DIP IC package
it would just be nice to know how to repair IC legs for future reference
Generally if the pins are broken like that, there might also be breaks inside the die. The bonding could be damaged etc. Or it ...
- 16.6k
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Replacing broken pins/legs on a DIP IC package
Pins tend to break off right at the edge of the IC package which leaves very little metal to solder a wire to. If not enough material is left on the outside of the package you can try to grind the ...
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Understanding how audio is encoded on mysterious device to reprogram it
That could be any of several dozen different microcontroller vendors. You'd have to figure out which one, then obtain and learn their tool chain and you could (eventually) be able to program a new ...
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Replacing broken pins/legs on a DIP IC package
It’s possible but only something to try if there’s no other option. You’ll need to tin the remains of the pin and then solder a short length of tinned wire to it. Without fresh flux a blob of solder ...
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Datasheet XR2981
Here is a datasheet:
https://cdn.hackaday.io/files/1829407826904960/Xysemi_XR2981.pdf
It was included in the files of this Hackaday project.
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Help identifying a small (1.6 x 1.2) IC on the output of a buck converter
It possibly could be the BU2JTA2WNVX 2.85V LDO regulator from ROHM.
Marking:
Pins/Signals:
Package size:
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Trying to get a more consistent/accurate AnalogRead() output
Thank you all for your input! I found the source of my problem. There is a mistake in the Mouser description for the shunt resistor I ordered. I was looking for a 1mOhm resistor so I keep the losses ...
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