Specification Sheet
Model 105 Sigma-Delta Counts-to-Volts Converter
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OVERVIEW
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The Model 105 is a positive edge triggered counts-to-volts
converter with a range of 0 to 380 KHz. The analog output is
scaled to 1 volt at 200 KHz. Resolution can be as good as
one count per half second when used with a sufficiently quiet
high resolution A/D converter. The maximum voltage output
is 2 volts. (380 KHz = 1.9 volts.)
The filter time constant for the Model 105 is 0.5 seconds. It settles
to 18 bits in 4 seconds after an instantaneous full-scale step.
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LINEARITY
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Linearity is typically 0.001% of full scale.
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POWER REQUIREMENT
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+12 to 15 volts (regulated) at 15 ma and -12
to 15 volts (regulated) at 1 ma.
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DIGITAL INPUTS
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Input Connections (34-pin dual row header):
Pin 27 +15 VDC
Pin 29 -15 VDC
Pin 32 ground
Pin 33 input signal (5 volt logic)
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DIGITAL OUTPUTS
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Output Connections (screw driver terminals):
+ out to A/D + input
- out to A/D - input
ground use for common mode ground connection, if necessary
(can also be used to terminate shield. Do not
connect shield to ground at both ends.)
PRICE
$260
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