Questions tagged [voltage-reference]
Anything related to the design and implementation of voltage references, i.e. circuits behaving like fixed (constant-value) voltage sources whose output voltage can be deemed very precise, accurate and stable. Voltage references are not meant to provide significant current to external circuits.
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FLC100 Flux Gate: How does the reference voltage work?
I am using a set of six Stefan Mayer FLC100 flux gate magnetometers to measure a magnetic field along 3 axes.
My current understanding of how to use these is that you take the differential ...
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Should I replace my stepper driver since my motor is acting up?
I've been using a Pancake Bipolar Stepper Motor for a project and STSPIN220 as the driver, but I've been randomly having a lot of current issues causing my motor to jitter.
My project has been running ...
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LDO vs voltage reference when input signal is noisy
I am designing an active EMI-filter (AEF) with an op amp (LTC6227). The AEF suppresses noise from a DC/DC converter. Ther op amp requires a supply voltage of 9V and a reference voltage of 4.5V at the ...
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How to Properly Select Resistors and Capacitors for a Voltage Reference Circuit with BJTs
I am working on a reference voltage circuit and I am having trouble when selecting the appropriate resistor and capacitor values. The circuit involves OP07 operational amplifiers and transistors (...
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Function of R6 in this voltage reference circuit
I've seen the following precision voltage reference circuit in schematic diagrams of several vintage instruments:
I understand how this circuit works in general: it is basically two constant current ...
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INA125 Reference Voltage lower than expected
I am using a INA125 to amplify the signal from a load cell. When I connect everything according to the datasheet as seen below, the reference voltage drops when I connect the load cell. I am supplying ...
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CS1237 ADC - series resistor of voltage reference too big?
I've recently tried multiple times to get consistent readings of a loadcell with a CS1237 ADC-module like the following:
https://www.androegg.de/shop/cs1237-24-bit-adc-ad-konverter-modul-tl431/
It ...
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MDAC AC reference input
I previously had a question on using AC reference voltage with a MDAC, But it has been addressed nicely in the answer below.
How does the "Multiplying Bandwidth" specification relate to a ...
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Voltage reference 1/f noise datasheet comparison
I would like to compare the 1/f noise of the voltage references LT1021 and LTC6655. The LTC6655 has a spec of 0.25 ppm (0.1-10Hz) and the LT1021 has 3uV_pp (0.1-10Hz).
I assume these datasheet ...
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Noise density in 1/f region
The datasheet of the ADR1000 voltage reference specifies the 1/f noise density as 30nV/sqrt(Hz) at 10Hz and 300nV/sqrt(Hz) at 0.1Hz.
Given that this is the 1/f region of the voltage reference, how can ...
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Why use a voltage reference chip rather than a known VCC and resistor? [closed]
To elaborate, I'm making a circuit that converts an analogue sensor output into an on/off state using a comparator.
Is there any reason that I should use a voltage reference chip as the low comparison ...
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ADS7830 ADC unable to provide meaningful values with 3.3 V external reference
I made a board to read some analog values using an ADS7830 ADC. I wish to use a 3.3 V source as external reference voltage.
The schematic and layout are shown below (R6, R7, R14, C4, C5, and C6 ...
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(TAoE) JFET voltage reference derivation
I've been reading the Chapter 9 of The Art of Electronics, 3rd ed., and apparently the equation I derived for the following circuit is wrong.
My reasoning follows. Vout is the sum of the ...
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How a REF102U precision voltage reference works? [closed]
I'm looking at the circuit schemes in which a precision voltage is used. I have never worked with them before.
I have read some literature and, obviously, its datasheet: REF102U datasheet
I didn't ...
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How to isolate audio signals from each other using op-amps with the same single supply?
Reuploaded corrected picture, as the old one was with confusing ground connections:
I am new here, so please be patient if I'm doing something wrong. I really need some help as I can't figure it out ...
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