Questions tagged [integrated-circuit]

An integrated circuit (IC) is an electronic circuit built onto a single plate of a semiconductor material, normally silicon. Modern ICs may contain billions of transistors and they have played a major part in the miniaturization and performance improvements of modern electronic systems.

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19 views

Single-IC solution to the problem of spurious high on NodeMCU powerup

I am currently trying to find a method to use all the IO pins on a NodeMCU to control an 8-Relay Board. However, some pins on the board briefly switch to high during startup and that is a problem for ...
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Questions regarding DC-DC converters components and its cost struture [closed]

What are the component of Dc-Dc Converter? And would be the cost percentage of power module in DC-DC Converter?
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Wireless Qi charger [closed]

I want to make a wireless Qi charger. I research for this. there different ic uses, I want to know that which ic will be best for the transmitter and which will be best for receiver. Some of charger ...
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18 views

Finding an analog switch IC (BBM & SPDT) for video signal

I'm looking for a SPDT analog switch IC with Break-before-make to switch between video signals. However, the amount of options available leaves me overwhelmed with no clear option in sight. I've ...
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47 views

Rated power vs power output

Could anyone please explain to me the difference between rated power and power output. It says in the instruction book that the power output is 20 mW/ square centimeter but at the back of the machine (...
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41 views

IC power consumption under 50% vs 100% busload

Is the dynamic power consumption difference significant for a uC, if it has to raise its activity on the chosen bus protocol from, lets say 50% to 100%? I look in overall to the uC+CommController+...
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21 views

UART communication with a Thorlabs chip

I am trying to configure a Thorlabs temperature driver (MTD415TE), using a UART-USB connection. For this, I am using a Foca v2.2 with a FT232R USB-UART cable. I am using serial terminals such as ...
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11 views

Poly density issues in differential pair layout

I have designed layout for differential pair in 10*10um2 of area. I have used dummies and guard ring around the differential pair to avoid PVT variation. here while running the DRC(Design Rule Check)...
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36 views

5-pin SMD device identification - top marking CaC9A

Please help me to find the name of this SMD device with top marking CaC9A
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82 views

OpAmp comparator circuit having unexpected behavior

I'm working with the following circuit. It integrates a constant current, and when the output reachs a threshold, another circuit activates the switch, discharging the capacitor. The switch is ...
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91 views

Identify unknown Microchip IC from Opel LCD dashboard - markings 25072478 REV D 9119 CCA

I already asked this question in Reverse Engineering StackExchange more than one year ago. Since then I got no answer and I have tried to search again in google and so with no success. I have seen ...
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Is there any way to perform a clarke transform on a signal without using digital signal processors

I am trying to implement a active shunt power filter for a 3 phase network.Is there any IC or microcontroller availiable that can perform a clarke transform on the signals from the network.
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Suitable resistance values for an analog IC

I was reading a chapter of the book "Continuous-Time Active Filter Design" about analog filters design. Let's consider the following band - pass filter, in which its inductances may be simulated with ...
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25 views

TPS92513 (LED Driver) - Question about varying the reference voltage

Datasheet for the part in question: http://www.ti.com/lit/ds/symlink/tps92513.pdf So, on the pin description on page 3 it describes I_adj as: ...
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1answer
55 views

Delay circuit having different high-to-low and low-to-high delays

I'm trying to design an integrated circuit that can implement a delay of approximately 100 ns, working with a 180nm process. With this process, an inverter has a delay of picoseconds, so it would ...
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29 views

How can I setting up RF2506?

I'm going to use RF2506 IC in my project. But I want to know How can I calculate the output frequency. I searched the Internet but I find nothing. I want to change only VTUNE voltage to control the ...
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31 views

What IC can I use as controlled inverter [closed]

Pretty much I want to find an IC with the following structure: Inputs: I, a0...a7 Outputs: b0...b7 Where b0=a0 xor I, b1=a1 xor I, etc.
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68 views

Large Signal Transconductor

I have a basic question about the following circuit, which is introduced in the book " and is described as a "large signal transconductor": It says that: the capacitance value is chosen to be a ...
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117 views

Replacing an NE555 with a 74HC123D

I want to replace an NE555 with a 74HC123D in a battery powered device. It is used to clock a CD4017, for which I need a pulsed signal of 46Hz. I read that a 74HC123D needs less power than a 555. How ...
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47 views

Is infrared photoemission from silicon used in IC manufacturing diagnostics?

In the video Why all solar panels are secretly LEDs (and all LEDs are secretly solar panels) a silicon photovoltaic cell from a calculator is purposefully damaged and then a 36 V bias is applied. When ...
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What pattern can be assumed to write the functions of a 16x4 priority encoder?

How can we find the expressions of the solutions without using K-Map or the Tabulation method?
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80 views

Clock divide by 5 - All ICs obsolete?

I've got an obsolete part in a design (SY100S839VZG) that is being used to take a single 100MHz clk and divide it down into two PECL p/n pairs. For the life of me, I cannot seem to find a single ...
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1answer
73 views

Adding Ethernet ports to my SoC

I'd like to add multiple (>5) Ethernet ports to a board I am developing. Linux on the CPU has to see each port individually, be able to route the traffic among ports, and also add traffic on its own (...
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1answer
26 views

TLP175A High Load alternative

I came across this IC and it is an IC i need, but i would like to controll a heavier AC load with it, 220V 1A but this particular device is for low volatage levels. Is there high load alternative for ...
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120 views

which IC produces PWM that can be filter into sine wave?

For a DC to AC transformerless power supply, I am trying to find a specific type of IC that produces PWM that can be filtered into sine wave. What I can find in most website is MCU that has to be ...
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44 views

Accessing SMT pins on prototype board

I need to be able to solder wires to the hidden pins of an smt ic. The ic is soldered directly to the pcb, and they are not visible. I need to access the PCM audio interface on a sim7500e, and the ...
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68 views

What is this IC “30=70H”?

I'm hoping to identify the IC on this Philips Hue lightstrip controller in order to replace it. The IC blew after a barrel connector head used had it's polarity reversed, so 24V went in the wrong way ...
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1answer
102 views

Trying to identify an IC labeled 5AF2S [closed]

I'm trying to repair a laptop motherboard for a coworker and found a shorted IC. I'm not sure of what it is so i'd like to know if anyone could give me an hint The IC is labeled 5AF2S and is in SOC70-...
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What is XCLR and EOC

As the title says, looking at IC9 (BMP085), could someone explain why XLCR and EOC are connected to P-XCLR/P-EOP and why there is no other match in the schematic? Are these connected at all? If not, ...
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What is the name or number of this chip on this PCB? [closed]

We are trying to repair this pcb. We found that someone deleted the number or name of this chip which needs to be replaced anyone has idea ?
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93 views

Fail safe led circuit

My question is about how to turn on a led before the GPIO pin has been initiated. When the IC has just been powered on and has not yet been initiated the GPIO pins remains in state HI-Z. In Circuit-1 ...
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1answer
74 views

Internal circuitry of integrated circuits

Is it possible to know the internal circuitry of integrated circuits? I know that some ICs contain billions of components.I mean, do IC manufacturers publish these ?
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61 views

Advantages of using active inductors in ICs

I have seen that there exist many methods to realize equivalent inductors in IC through active components. For instance, through gyrators realized with Op-Amp. This solution will require a lot of ...
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Inhaled fumes from burning IC

I inhaled fumes that came out from burning IC from a module due to wrong wiring. Are that fumes lethal and what are those fumes made up of ??
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Can we ground all the nets in a printed circuit board?

I am a newbie in electronics and I am designing a printed circuit board. The IC I am using has some pins that I don't use in my circuit. Is it okay to ground those nets or leave them as they are? I ...
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1answer
35 views

Comparator problems with output

I am kinda new to electronics design and I am having some trouble with the Analog Devices LT319AN chip. I am trying to do simple 250KHz PWM which worked on a lesser LM393 chip in this exact setup. I ...
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3answers
124 views

Differential Pairs and GND

I have some doubts about different configurations of differential pair I have seen in many cases: In these schemes, biasing network for the gate is not shown for simplicity. All of them are excited ...
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1answer
28 views

CI HT12E enable control to reduce power consumption

So, following this datasheet (check out Application Circuit 4), I managed to transmit a signal and receive it on the other end. The thing now is: the whole circuit is drawing 2 mA, and that is because ...
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3answers
33 views

Does AM26C32 leave outputs floating?

Does the AM26C32 leave outputs floating, by which I mean, when "off", is the output pulled to GND, or would I need to provide a pull-up/down resistor? Where in the datasheet would this info be ...
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39 views

Which type of components required to achieve pre-determined output sequence?

Just getting back into electronics. I would like to create a circuit that can be programmed to control the state of a light bulb / relay - e.g., on for 2 seconds, off for 12 seconds, on for 5 seconds, ...
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73 views

How does this circuit protect against reverse polarity?

I'm looking at the datasheet for the VND7004AY high side automotive switch. The diagram below shows the internal structure of the device and claims it is protected against reverse polarity. I have 2 ...
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1answer
61 views

Max input/output voltage/current of CD4060 & other ICs

I’m learning to build clocks using sequential logic. One thing I don’t quite understand from the data sheets is the max input and output current that comes out of ICs like the CD4060 and CD4026. I’ve ...
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Please help me identify the SMD component

I have two nVIDIA Quadro P5000 GPUs. This component got damaged in one of the GPU while I was removing it from the PC. Please help me to identify this SMD component so that I could purchase and solder ...
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What is the minimum die area of a chip?

Silicon chips are made by slicing up wafers; in general, the fewer transistors a design needs, the smaller the area it needs, so the more chips you get out of a wafer, and the lower the cost per chip. ...
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46 views

How to use/create a real time clock to use with specialized? [closed]

I want an accurate clock that will output a square wave that operates at 1 Hz. I need it to connect to a chain of binary counters. When the right binary number has been achieved the outputs will ...
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2answers
47 views

Equivalent to AO7400A MOSFET

My Dell laptop (Inspiron 15 7559) has a dead AO7400A MOSFET, and I've been looking all over for a replacement, but with no luck. Does anyone know an equivalent to it, or maybe somewhere I would be ...
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57 views

Why is 7 nm Process Node called 7 nm?

I found this on wikipedia: "The naming of process nodes by different major manufacturers (TSMC, Intel, Samsung, GlobalFoundries) is partially marketing-driven and not directly related to any ...
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2answers
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Implementation of Current Source for a Current Mirror

let's consider this simple example of current source: It is a current source because each load I connect to it, it will receive a value of current equal to Vbias/R, which does not depend on the value ...
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Is the current through the MCP41010 digital potentiometer independent from its supply voltage?

In the datasheet it says that the maximum wiper current is 1mA. Does this mean that regardless of the supply voltage and the set resistance, I can pass a maximum of 1mA through the resistor? Let's say ...
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Two different ceramic decoupling capacitors in parallel

I am trying to repair a motherboard that had a shorted ceramic capacitor (1206 package) in position B. The voltage across the pads is ~19V. I put in a 10 μF 25V-rated ceramic cap, and the motherboard ...

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