All Questions
Tagged with differential adc
76
questions
3
votes
2
answers
83
views
How to obtain differential measurements with an ADC
I have a digital scope and it has also differential inputs(+in_Scope and -in_Scope). I always obtain less noisy results using them comparing to and single ended wiring. Here below I draw what I mean:
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- 4,333
0
votes
1
answer
31
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Max voltage per pin when measuring differential voltage with MCP3422
Im measuring differential voltage over a 1 Ohm (shunt) resistor at max 1 Amp, load voltage is 12V DC using one of the channels on MCP3422. MCP3422 is powered from 3v3 DC.
The datasheet https://ww1....
- 50
0
votes
1
answer
39
views
CM filter of differential input(AD7383-4)
I'm trying to make a 3-phase inverter using AD7383-4 for converting analog current signal to digital.
Typical application of AD7383 which is given by datasheet. AD7383 gets pseudo-differential input ...
- 5
0
votes
0
answers
53
views
Interfacing ratiometric sensor to precision differential ADC
Please consider following simplified schematic:
I'm currently in process of designing the analog interface for prototype heat pump driver/controller. It's job is to measure multiple analog inputs ...
- 1
2
votes
0
answers
67
views
Transmitting differential video signal to the ADC input
I'm designing a circuit that converts a single-ended analog video signal (f = 10 MHz) to a differential pair and then is processing the data to a digital form. The signal is transmitted through a ...
- 75
2
votes
1
answer
85
views
Designing a single-ended to differential driver to DC2588A-A evaluation board
I'd like to test the DC2588A-A, and I noticed that the user guide mentions it's driven by a pair of ADA4899-1 DRIVER amplifiers. However, the user guide doesn't provide clear information about the ...
0
votes
0
answers
49
views
Understanding the purpose of REFT and REFB on a differential ADC
I am using the Analog Devices AD9238 ADC for a project and I am confused about the purpose of the differential voltage references (REFT and REFB).
I am powering the AD9238 from a +3.0V supply and I ...
- 1
1
vote
3
answers
97
views
'Best' topology to measure this weird sensor standard
I am developing an embedded solution to measure and record the analog signal from a PCB Piezotronics pressure sensor. Specifically the Model 124A21.
The sensor has some integrated circuitry to boost ...
- 11
1
vote
1
answer
368
views
How to buffer (high input impedance required) a differential signal
I'm wanting a to increase the input impedance to a differential ADC. The ADC spec states that it can't handle a negative voltage lower than -100mV the ADC's supply can handle ~5V (this is a ATtiny1617)...
- 127
2
votes
1
answer
904
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ADS1115 differential overvoltage protection for three inputs and one reference input
I am trying to protect three separate inputs (A0, A1, and A2 with A3 as reference) of an ADC from an over-voltage of ±10V DC between any of the inputs or the reference (the reference is not grounded ...
- 41
0
votes
0
answers
52
views
Best way to drive high speed ADC with differential inputs
Currently I am using AD8137 to convert my single ended signal to a differential signal. The ADC I am using is ADC3422 from TI and the data sheet suggests a passive circuit to drive low frequency ...
- 237
2
votes
1
answer
307
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Battery voltage measurement using ADC problem
I want to measure the open circuit voltage of an electrochemical battery using an ADC and an Arduino. I need to use the ADC in differential reading mode (A0 por positive and A1 for negative).
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- 407
1
vote
0
answers
182
views
Single-ended to differential ADC driver with one pole active low pass filter
I have this ADC driver circuit:
There is a passive filter downstream of the driver which works as desired. I'm focused here on the active filter. When I run AC analysis on this circuit configured for ...
- 439
0
votes
0
answers
195
views
High Side, High Voltage Shunt Measurement with Differential ADC
I need to measure the high-side current out of an LED driver. The problem is that the output voltage can be as high as 250V. One solution would be to float an ADC and digital isolator just below ...
- 21
2
votes
1
answer
359
views
How do I scale a differential signal
I am trying to automatically measure the behavior of a batch of devices in order to guarantee that the current stays in the expected range for different supply voltages. For that purpose I am using an ...
- 161