# 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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### Problem on biasing of the differential folded cascode with ideal and non-ideal CMFB

for this circuit, a PMOS input stage folded cascode amplifier as a gain booster, I have two question. The PMOSs (Mppp1 to Mppp4) in the cascode banches are in strong-inversion saturation while the ...
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### How to solve "no simulator model" in Proteus?

I would like to do a simulation using the SPV1050 in Proteus, but Proteus says "no simulator model." What does that mean? Is it only for PCB design, so not suitable for doing simulation to ...
38 views

### Active inductor

I am designing active inductor using OTAs (Transconductance amplifiers) and have a problem writing an equations. I wrote two equations for nodes V2+ and V2- and input current Iin.  0=sCV^+_{2}+g_1(...
80 views

### Looking for inventer and/or name of fast sorting algorithm [closed]

Back in 1992, when I was a grad student in the Computer Science and Engineering Department at the University of Washington, my faculty advisor told me of a sorting algorithm that takes as input N ...
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### What will be the new value of Vy? [closed]

It is clear to me that Vx will charge upto 3.4V and Vy will also be 3.4V but what will be the value of Vy if I increase the gate voltage of second MOS to (say) 4.2V? Also, if possible kindly attach ...
81 views

### How do you cascade two 7-segment decoder ICs together?

We used one 74LS47 IC in our lab, which we connected to a 7-segment display and tested the outputs. Now our instructor has told us to cascade two 7447 ICs together and implement it on a 7-segment ...
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### Need to find a description for the CSC7102C [closed]

I was trying to search for the CSC7102C on google and couldn't find any description for it. What is the function of this IC?
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### Power combiner for I-Q signals in a transmitter

I have a transmitter project to implement. Part of the project is to combine an in-phase and an out of phase (90 degree difference) signal with a center frequency at 3.5GHz. I figured I could ...
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### Can I replace a PWM IC on a PCB with another PWM IC from the same vendor but having a slightly different part number? [closed]

The PCM is of a power supply unit for a speaker and it has this PWM IC (OB2362). I am not able to find an exact replacement to that chip but found a close match (not sure though): the OB2263. It has ...
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### DC-DC converter fault output

We have a design using 4 EM2130L02QI dc/dc converter all with very similar routing and component placement. the output gets shorted to GND and never changed . the same board that contain with another ...
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### What is the SGMII differential peak to peak voltage?

I am trying to understand the SGMII Driver and Receiver DC specification. Here is the link to SGMII specification - SGMII.pdf I am studying. Table-1: Driver DC specification Table-2: Receiver DC ...
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### What type of component is the AMTEX ST033?

I want to know the IC used for this Nintendo 64 heartbeat detector peripheral. As seen in the image is an ST033 AMTEX (9836 which is probably a serial number) but a Google search won't show any ...
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### Should I use a resistor in series when connecting a pin to logic level high?

I'm trying to design a circuit with MAX8934AETI+. I'm confused about how to connect a pin to logic level high. For example, pin 6 in the picture below is meant to be connected to logic level high to ...
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### Is there any method to turn any PWM DC-DC converter to its small signal model at circuit level?

Is there any method to turn any PWM DC-DC converter to its small signal model at circuit level? As I know the PWM switch model does that well but it only applies to simple circuits and the switches ...
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### Unknown IC identification - six pin SMD marked ADZ

Does anyone have any idea what this chip is?
1 vote
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### Contradictory information in current capability of open drain output for the MAX7317 IO expander

I am looking at the datasheet of the MAX7317 IO expander and it is not clear to me if it can drive simultaneously 8 pins when each pin sinks 16mA. I don't have a lot of options because I need SPI. The ...
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### CD4053B Triple 2:1 MUX/DEMUX For Switching Three LED Channels To Multiple Zones

My last post (Multi-Zone Addressable RGB+CCT LED Mode Switching) got closed as off-topic because I was “seeking recommendations for a specific product”... I found on my own what I believe to be the ...
• 1
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### Understanding Spec sheet of IC

I'm having trouble understanding the spec sheet of this shift register. What I want to do is to connect a (generic red one, I don't have any specs) LED which will approximately use 15-35 mA to the IC. ...
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### Is it better if each integrated circuit has a dedicated voltage regulator?

I have a circuit consisting of an ESP32 microcontroller and some integrated circuits. Is it better if each integrated circuit has its own voltage regulator? Example: Full circuit after modification :...
48 views

### 40-96 VAC to DC conversion

I am trying to build a simple voltage meter. One that displays the AC voltage onto a small LED display run from an Arduino Micro. I have the nuts and bolts down but I'd like to be able to power the ...
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1 vote
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### Custom semiconductor processes with 3rd party foundry

There's foundries with established processes which give you a process kit to simulate things like transistors etc. But suppose someone wanted to develop a custom imaging sensor which requires ...
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### 74HC74D initial output value after power up

I use a touch sensor (Active Low) to light up a light bulb. here I've used a 74HC74D D flip flop to turn on an off the bulb with the sensor pulse (sensor output is active low which is then converted ...
49 views

### TinkerCAD 7-Segment Display Not Showing on Simulation

I am only on my 5th week trying out TinkerCAD for our Logic Circuits course. We are tasked to create a 7-Segment Display Using Logic Gates only. I did all the boolean expressions needed for each ...
1 vote
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### What causes the output of the flip-flop to be LOW in 555 timer monostable circuit?

Before pressing the button, the external capacitor isn't charging because of the short circuit applied across it, but the short circuit is happening because discharge transistor is ON because the \\$\...
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### Power path sharing with LTC4416

I am struggling with the LTC4416 datasheet. My need is a 4-cell Li-Po battery (13.6..17.2V) used as the device battery and an optional external power supply (18..24V). When the external power is ...
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1 vote
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### Chip antenna ANT161575ST-1202A1 layout question

I am designing a GPS module using the following chip antenna: https://product.tdk.com/en/system/files?file=dam/doc/product/rf/rf/antenna/catalog/rf_ant_ant161575st-1202a1_summary_en.pdf The datasheet ...
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### Does each IC need its own bypass capacitor when there are multiple ICs in the same circuit?

I am working on a circuit to measure the current drain of six hobby servos for a robotics application. I'm aiming to use six ACS712 current sensor ICs. The ACS712 data sheet shows a typical ...
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238 views

### What does INH as an IC pin label mean?

While using a CAD model for a 74HC4051D multiplexer which I downloaded from SnapEDA I noticed that pin 6 is labelled INH rather than E bar (or Enable) as I anticipated from the datasheet. What does ...
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### What is the difference between these two IC suffixes: EUKG and IUKG?

I am wondering what is the difference between these two ICs: LTC3886EUKG-1 LTC3886IUKG-1 I looked at the datasheet and the following page, but I have no clues... https://www.analog.com/en/products/...
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### Can a memory controller keep track of which OS application a memory location belongs to? [closed]

I've included a photo of a die belonging to a modern day Intel desktop CPU. It depicts several sections, one of which is described as the memory and IO controller. What I would like to know about the ...
82 views

### How would you generate a negative rail of -50V with a current of 100mA using a positive 50V generated by a battery powered boost converter? [closed]

Please I really need suggestions on this. I want to generate a -/+50V dual-rail at >=100mA supply for a circuit I am working on. I bought 2 copies of this boost converter module from Amazon and it ...
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### Design with IC ADP5091 for energy harvesting in Proteus

I want to design this IC ADP5091 using Proteus. But I'm still a newbie and not much understand about this software and this IC. Can anyone help me? Is it right I'm doing this simulation circuit? ...
31 views

### Advice on SIPO FIFO clock, as well as 555 timer usage

I've made a circuit which involves me entering inputs, and the result being displayed in a seven segment LED. The LED must flash on and off and display the input number at least two times in two ...
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### Why is this recommended in PCB layout: 2 leads between pads

Why is the connection recommended as in the top picture?
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### How to model IC's enable (EN) pin in SPICE

What is the best way to model an enable pin of an IC (SIP32508)? There is no schematic in the datasheet apart from the block diagram. I know that the pin can be driven between 0 and 5.5V and has the ...
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1 vote
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### What kind of latch would be best to continuously store and feed in a series of inputs?

So I've got an assignment where I've two buttons and LED screen. One button inputs a '1' and the other a '0', and when four inputs are detected the screen displays the number eg. If I typed 0011 it ...
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### Question regarding making an earthquake detector circuit

I am a beginner in the subject of electronics. I am planning to do an earthquake detector circuit (https://www.electroschematics.com/seismic-sensor/). I need to know what to look for regarding the ...
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### We are currently looking at circuit and were wondering if this part of the circuit was a DC-DC converter?

Looking at a circuit board that is attached to a battery pack that can be used to power home appliances.
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### Toggle latching IC to replace relay

I need an IC on which pins stays in same state after power reset. How it's called? I don't want to use relays.
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### How do I wire a seven segment LED display to display binary input from two buttons?

I've been tasked with implementing a circuit involving a seven segment LED display and two switches/buttons. One will inject '1' and the other injects '0' into the circuit, and every four inputs a ...
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22 views

### How do I convert a AT-09/CC2540 BLE module onto my own PCB?

Do I need to take the entire AT-09 module or can I just solder on the CC2540 module? Also, what is the plastic cover on the AT-09 for (I'm guessing signal interference)? Is it necessary to have? I ...
73 views

### LNA circuit: why is the inductor causing a voltage and current drop?

I am designing the following circuit whose schematic and testbench I put below: I performed a DC bias analysis. Theoretically, I would expect that at DC the inductor would be a short-circuit and the ...
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### How to design adding/subtracting logic circuit

I am tasked of creating a logic circuit that can switch between adding and subtracting. I can do that part, but how can I indicate whether the result is positive or negative? One of my ideas is to ...
594 views

### What is an integrated circuit equivalent for this circuit?

I am trying to design a so called signal switch in which I can direct the signal to either go to NODE1 while NODE2 remains HIGH, or the signal goes to NODE2 and NODE1 remains HIGH. The following ...
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### Why am I having a saturation in the output of INA122?

Even with no voltage difference on the inverting and non-inverting input, my output signal is at approximately 2.8V. I am powering the amplifier with a voltage of 3.3V, provided by my arduino. At the ...
85 views

### Tips on how to increase the gain and lower the noise factor of a LNA

Hey guys I am designing a LNA biases by a 3.3 V source and tuned to 2.5 GHz. Here is the schematics, the testbench and some results (s parameters analysis). I would like to know if there is a way of ...
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### LTC4357 Reverse Polarity Protection

I am looking to implement reverse polarity protection into a 24V circuit that is currently using the LTC4357. I originally thought that the "ideal diode" that it forms with an N-MOSFET ...
82 views

### What is the Test ID number of the USB7216 USB Hub chip

I am using the Microchip USB7216 USB 3.2 Hub chip in my design. I would like to know the TID number of this part. I have looked in the datasheet, on the manufacturer's website, and the internet in ...
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