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AMPLITUDE-TO-DIGITAL CONVERTER ADC-USB-8K-SA1
INTERFACE OF BUS USB
SUCCESSIVE APPROXIMATIONS CONVERSION METHOD

BASIC CONFIGURATIONS
Type
Number of inputs
Number of converters
Resolution
Connectors
Type
Purpose
ADC-USB-8K-SA1
(foto)
1
1
1K,2K,4K, 8K  
BNC
Analogue input
DB9
Logical inputs

BASIC DATA
Conversion method Successive approximations with leveling
Conversion time 3.5 µs
Analogue input signal Polarity Positive
Amplitude 20 mV - 5 V
Rise time > 0.25 µs
Decay time < 100 µs
Input resistance 2 k Ω
Differencial nonlinearity (DNL) < 1 %
Integral nonlinearity (INL) < 0.04 %
Programmable selection of conversion resolution (number of channels) 1K - 2K - 4K - 8K
Channel memory capacity 224 - 1
Real/live time setting accuracy 5 ms
Lower-level discriminator threshold range 20 mV - 5 V
Upper-level discriminator threshold range 100 mV - 5 V
Spectrum correction by signals from external pile-up detector +
Live time error when piled-up pulse rejection is used At intensity 100000 pulses/s < 7 %
At intensity 50000 pulses/s < 4 %
“Ratemeter” input - logical signal with frequency up to 300 kHz +
“Inhibit” input with programmable polarity +
Overall dimensions 215x105x33 mm

RESOLUTION, CHANNEL WIDTH AND NONLINEARITY
Type
Channel width
Resolution (number of channels)
Typical values of nonlinearities
INL
DNL
ADC-USB-8K-SA1
5 mV - 0.625 mV
1K - 8K
0,02 %
0,5 - 1 %

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