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3D7444 Datasheet(PDF) 4 Page - Data Delay Devices, Inc.

Part No. 3D7444
Description  MONOLITHIC QUAD 4-BIT PROGRAMMABLE DELAY LINE (SERIES 3D7444)
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Maker  DATADELAY [Data Delay Devices, Inc.]
Homepage  http://www.datadelay.com
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3D7444 Datasheet(HTML) 4 Page - Data Delay Devices, Inc.

   
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3D7444
Doc #03006
DATA DELAY DEVICES, INC.
4
12/8/03
Tel: 973-773-2299
Fax: 973-773-9672
http://www.datadelay.com
INPUT SIGNAL CONSIDERATIONS
The Frequency and/or Pulse Width (high or low)
of operation may adversely impact the specified
delay and increment accuracy of the particular
device. The reasons for the dependency of the
output delay accuracy on the input signal
characteristics are varied and complex.
Therefore a Recommended and an Absolute
Maximum operating input frequency and a
Recommended and an Absolute Minimum
operating pulse width have been specified.
OPERATING FREQUENCY
The Absolute Maximum Operating Frequency
specification, tabulated in Table 1, determines
the highest frequency of the delay line input
signal that can be reproduced, shifted in time at
the device output, with acceptable duty cycle
distortion.
The Recommended Maximum Operating
Frequency specification determines the highest
frequency of the delay line input signal for which
the output delay accuracy is guaranteed.
Operation above the recommended maximum
frequency will cause the delays to shift slighty
with respect to their values at low-frequency
operation. The magnitudes of these deviations
will increase as the absolute maximum frequency
is approached. However, if the input frequency
and pulse width remain constant, the device will
exhibit the same delays from one period to the
next (ie, no appreciable jitter).
OPERATING PULSE WIDTH
The Absolute Minimum Operating Pulse
Width (high or low) specification, tabulated in
Table 1, determines the smallest pulse width of
the delay line input signal that can be
reproduced, shifted in time at the device output,
with acceptable pulse width distortion.
The Minimum Operating Pulse Width (high or
low) specification determines the smallest Pulse
Width of the delay line input signal for which the
output delay accuracy tabulated in Table 1 is
guaranteed.
Operation below the recommended minimum
pulse width will cause the delays to shift slighty
with respect to their values at long-pulse-width
operation. The magnitudes of these deviations
will increase as the absolute minimum pulse
width is approached. However, if the input pulse
width and frequency remain constant, the device
will exhibit the same delays from one period to
the next (ie, no appreciable jitter).


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