Questions tagged [buffer]
A circuit or sub-circuit that as accurately as possible preserves the voltage characteristics of a signal while providing additional current. Typically used in situations where a circuit cannot drive the load that is presented to it.
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Practical Opamp Buffer Output Offset and Clipping Behavior
I'm designing a full-wave precision rectifier using OP07 in LTSpice. The first stage of the circuit (shown below) buffers the AC input using an OP07.
But the buffer output is clipped with a ...
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Can I make a simple distribution amp with a CD4050 hex buffer IC?
I've got a 555 circuit hooked up to a Stylophone-type keyboard. I'd like to duplicate the audio tones—which I assume are square waves (coming out of pin 3)—a couple of times and run them through an ...
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How to divide the PUL or DIR (stepper driver) signal into multiple equal signals
My problem concerns the synchronization of two stepper motors that control the movement of the Y axis.
I built a 3-axis CNC machine that uses two stepper motors for the Y axis.
The controller sends ...
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How do you wire up the PCA9600 I2C bus extender to use differential signalling at 12V?
I would like to use a 12V differential signal between two NXP PCA9600 I2C buffers to extend I2C at 100kHz to about 15m over 100-ohm twisted pair (CAT6). My original understanding from a brief look at ...
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LTC4311 vs PCA9515A: What is the difference?
We are hoping to run i2c sensors at about 10 meters and add some sensors over CAT6a cable.
After doing some research, it looks like the LTC4311 can allow this, but it looks like the PCA9515A does ...
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Pushing a button press from a driver to three different transistors with three state logic
I am working on a project within my company that involves a relay board used to control three different motors when an external 24 V button is pressed. The existing setup works based on this principle....
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Opamp virtual ground when power is removed
Does the virtual ground condition hold true when I cut off the power supply of the opamp?
I am using an opamp as a buffer. If I cut off the power supply but continue to give a signal on the non-...
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Why is op-amp buffer used at input to ADC?
This is from datasheet of TI part ADS7041:
The 200ohm resistor and capacitor form a low pass anti-aliasing filter. On the left of this, we have the input driver buffer op-amp. How do we know if we ...
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Transfer function of buffer
Not really sure on how to proceed
I got (Vin - Vout)/10K + (Vin - Vout)/wc = 0
I need to determine the poles and zeros for the same
The motive is to understand the pole added by the capacitor at some ...
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Looking for a Quad 3−State Noninverting Buffers in DIP package [closed]
My application is a half-duplex serial communication (2 buffers) and a switch for a 35 to 60mA load (1 buffer). I found On Semi MC74HC126AN (https://rocelec.widen.net/view/pdf/h52tembhav/ONSMS12940-1....
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What is High/Low Level Output current in Buffer?
I have an hex inverting buffer (HEF40098B) and I don't understand anything about the High-level-output-current and Low-level-output-current in it's datasheet.
What is the meaning of High-level-output-...
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Is it okay to buffer a differential signal using two op-amps?
I want to use use an OPA1632 to amplify a differential signal and feed it into an ADC, but this draws current from the signal depending on the feedback resistors, which changes based on the gain ...
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FPGA output to another FPGA input, 3 meters away
I have one FPGA (Artix-7 XC7A100T-2CSG324C) connected by a PCB trace to another FPGA (Artix-7 XC7A100T-2CSG324C.)
The PCB trace is 3.4 meters long, 0.154mm wide, 0.185mm high from GND plane. The ...
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Offset adjustment with unity-gain buffer
I want to include to my design an 'variable offset adjustment' circuit using an operational amplifier. This circuit would allow me to ajust the offset of my design. In my circuit, I already has a ...
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Is it possible for one oscillator to drive two ICs?
I have this oscillator IC with which I plan to drive a KSZ8795 and an LAN9500A without clock buffer.
The TG2016 output load drive is 10pF for the capacitor.
The KSZ8795 can have a crystal load ...
user220456
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"Pull-up" and "pull-down" or "push" and "pull"?
I thought about this question when I read an interesting comment by @Simon Fitch in his answer.
In the complementary amplifier stage, in total there are three "pulling" elements - Q2 is a &...
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What is the basic idea behind the so-called "diamond buffer"?
The idea for this question came about after I wrote an answer to a similar question. This "diamond solution" was something unknown to me. I took a look at Wikipedia page (see the picture ...
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Help with power buffer using capacitors
Looking for some help on how I might be able to add a power buffer of around 1 hour to an IC using super-capacitors, and be able to recharge it within 5~15 minutes after a power disconnect.
Looked ...
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Do dual supply voltage buffers with dual outputs exist?
I need a dual voltage supply (+-15V) voltage buffer for my design. This component will receive a signal (varying from -10 to 10V) and transmit it with gain=1 (line driver, voltage buffer or voltage ...
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Buffer for driving VMEbus
I am working on a project where I am reusing a VMEbus backplane to create a bus between some cards of my own design. This backplane has passive termination on both ends.
I am trying to find a buffer ...
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How to use a tristate buffer when negative voltage can appear on its output?
This is a followup to Injecting a UART TX output signal to an audio input pin, without messing up the audio?
The preferred solution for TX was a tristate buffer, which makes sense, until we recognize ...
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Is my microphone capsule dead?
I am using a JLI2555 microphone capsule. I tried making a circuit to see if the microphone capsule works. The goal was to measure voltage fluctuations at the output with a voltmeter as I yell into the ...
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Issue in rail to rail opamp as buffer
I'm using LTC6090IS8E#PBF as buffer. Following is the circuit. Actually my input is 100 V and I'm attenuating it to 60 V using voltage divider. Then 60 V is given to non-inverting input of LTC6090IS8E#...
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Would not this buffer reduce signal resolution for sensor driver? (recommended schematic)
I am following this design.
For my application, the LVDT driver would give me a +-10 V output.
Analog Devices recommeds a buffer for clearing the output signal of the driver. The thing is that they ...
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Clock Fanout Buffer Circuit
I need a clock fanout buffer to drive 3 components with same clock, and I have found this reference design but could not understand the reason of using the inverter in the middle.
Can I directly ...
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translating LVDS to LVTTL using amplifier and high speed output buffer
I am receiving an LVDS clock differential signals and need to convert them to LVTTL .
the problem is that the LVDS frequency is above 500Mhz and the LVTTL output needs to drive a 50ohm resistors, when ...
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Buffer works for signal from function generator, but not guitar signal
I am trying to create a buffer for a project I am working on. I found this schematic on line and built it. When I input a guitar signal the output equals V+ rather than giving the signal at the ...
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Inverting buffer
I want to buffer a signal with a 7404 IC, but this is an inverting IC. With feedback from the input to the output the signal becomes non-inverting again. Is this method correct and can it be used in ...
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TINA-TI convergence problem
I am trying to simulate the following circuit in TINA-Ti and I am facing the following convergence problem. Please help me to resolve this.
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Circuit for Read/Write RAM Control Signals
I have the following architecture of an 8-bit bus / RAM interface where the bus can read from and write to the SRAM:
There are two 74LS245 8-bit bi-directional buffers, with there direction input ...
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What's the use of buffers in gate driving?
I wa slooking into the demonstration board for the STDRIVEG600 600V high speed half-bridge gate driver and the circuit below is used to convert a PWM to 2 signals.
What i didnt understand is why they ...
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How does negative feedback stabilize the output of an op-amp?
I am trying to understand how negative feedback stabilizes the output of op-amps.
It is known that Vout = AOL*((V+)-(V-)), where AOL is the open loop gain of the op-...
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Why is there a glitch in the output of this BUF634P?
I am using a BUF634 for my application. For testing, I made a protoboard (hand soldered.)
Schematic:
Protoboard:
I am providing a supply of +15V and -15V. A 10 µF decoupling capacitor is provided.
...
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Logic buffers with discrete propagation delay
I want to have a circuit (for this matter a logic buffer) with a discrete propagation delay. It can be 5 ns, 10 ns or 15 ns, but I want deviations to be within 10-20% of these values.
Where do I start ...
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Gated buffer SN74LVC1G125 seems not to work with ADXL357 SPI connection. What is going on?
N.B. this question is cross posted from Analog Devices forum, but wasn't expecting much answer there so I'm also putting it here. Hope that's okay.
I have a PCB prototype whereby an ADXL357 is ...
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Connecting I2C sensors with the same address over 16-20 metres in a daisy-chain with 1 cable
I'm trying to solve the following problem:
"How to connect 3 to 8 I2C sensors with the same address over 16-20 metres in a daisy-chain with 1 cable without having to deal with address clashes or ...
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Audio line-out to amplifier line-in matching impedance and voltage
I am an electronics hobbyist. After reading online my understanding is that an op-amp buffer or JFET pre-amp can be used to match a medium (lower) input impedance with a high output impedance. In my ...
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JFETing op-amp inputs
My goal is to be able to use a high-speed, low-distortion, BJT-input op-amp having a much lower input current - that's why I'm trying to JFET the inputs. I don't want to cut DC with input cap, I want ...
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Experiment for driving LED with TTL output
I have done an experiment that I cannot explain and would like some help.
I have a circuit that is used to generate a clock signal for multiple TLL-based D type flip flop registers (SN74LS173). There ...
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Help selecting precision DC buffer op-amp
I figure my scant electronics lab needs more physical (rather than theoretical) tools, so I want to add a few more.
I already have ordered a voltage reference IC online & is on its way. Then I ...
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Cannot trigger digital logic because half of source voltage is lost in impedance matching
I am using a 3.3V output of an NI controller over a coax transmission line. I have matched the termination resistor to the 50 Ohm source resistance. I need to use this output signal to control three ...
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Low Noise - High DC Accuracy Voltage Reference Buffer ? Composite Amplifier?
I want to built a low noise voltage reference buffer to drive an ADC and additional analog circuits.
Main requirements:
"Ultra"-Low Noise
Best DC accuracy possible (mainly interested in ...
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VAS loading distortion in amplifier
I'm trying to solve the VAS (voltage amplifier stage) loading distortion in a three-stage amplifier.
Excluding the input stage (called IPS in the circuit below), here is represented a typical VAS ...
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Which transistors are good on buffers and differentials?
Which aspect of a transistor should I pay attention to in order to make the better choice when choosing a transistor to build a Common-Collector Buffer ?
And which aspects should I pay attention to in ...
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Why does the LTC2068 op-amp fail as a buffer for a 13 MHz ADC?
I am designing an AA LPF for my 8-bit ADC running at ~13.1 Msps, to sample a buffered differential signal. My goal is to down-sample this stream to 200 Hz, effectively increasing my ADC resolution to ...
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Strange overcurrent problem using two op-amps together
This is the circuit of the mentioned two op-amps which are basically only current buffers;
They are both supplied with 12 V and GND. They share the VCOM_x reference voltage as input which is around 7 ...
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Meaning of a buffer in electronics
I've gone through a lot of articles to find the correct meaning of buffer in the electronics sense.
From what I've understood, a buffer is a device or part of a big circuit that provides the output as ...
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Need help with circuit for buffering DAC output for low voltage/ moderate current application near 25 Hz, without crosstalk
I have some custom linear force probes I need to be able to control for a lab experiment. They're essentially just a big coil combined with a spring that deflects up or down based on the voltage put ...
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Interference between buffer/driver and WS2815 LED strip
What are your thoughts on how to correct this waveform? The pulse should be a 410 ns wide and 5 V high square wave.
The driver is a 74HCT365 push-pull buffer, supplied from the 5 V rail. The input (3....
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