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3D3314 Datasheet(PDF) 2 Page - Data Delay Devices, Inc.

Part No. 3D3314
Description  MONOLITHIC QUAD FIXED DELAY LINE (SERIES 3D3314)
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Maker  DATADELAY [Data Delay Devices, Inc.]
Homepage  http://www.datadelay.com
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3D3314 Datasheet(HTML) 2 Page - Data Delay Devices, Inc.

   
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3D3314
APPLICATION NOTES
OPERATIONAL DESCRIPTION
The 3D3314 quad fixed delay line architecture is
shown in Figure 1. Each delay line is composed
of a number of delay cells connected in series.
Each delay line produces at its output a replica of
the signal present at its input, shifted in time. The
delay lines are matched and share the same
compensation signals, which minimizes line-to-
line delay deviations over temperature and
supply voltage variations.
INPUT SIGNAL CHARACTERISTICS
The Frequency and/or Pulse Width (high or low)
of operation may adversely impact the specified
delay 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
Maximum and an Absolute Maximum operating
input frequency and a Recommended Minimum
and an Absolute Minimum operating pulse
width have been specified.
OPERATING FREQUENCY
The Absolute Maximum 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 Frequency
specification determines the highest frequency of
the delay line input signal for which the output
delay accuracy is guaranteed. To guarantee the
Table 1 delay accuracy for input frequencies
higher than the Recommended Maximum
Frequency, the 3D3314 must be tested at the
user operating frequency. Therefore, to facilitate
production and device identification, the part
number will include a custom reference
designator identifying the intended frequency of
operation. The programmed delay accuracy of
the device is guaranteed, therefore, only at the
user specified input frequency. Small input
frequency variation about the selected frequency
will only marginally impact the programmed delay
accuracy, if at all. Nevertheless, it is strongly
recommended that the engineering staff at
DATA DELAY DEVICES be consulted.
OPERATING PULSE WIDTH
The Absolute Minimum 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 Recommended Minimum 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.
To guarantee the Table 1 delay accuracy for
input pulse width smaller than the Recommended
Minimum Pulse Width, the 3D3314 must be
tested at the user operating pulse width.
Therefore, to facilitate production and device
identification, the part number will include a
custom reference designator identifying the
O1
I1
Delay
Line
Delay
Line
Delay
Line
Delay
Line
O2
I2
O3
I3
O4
I4
Temp & VDD
Compensation
VDD
GND
Figure 1: 3D3314 Functional Diagram
Doc #00120
DATA DELAY DEVICES, INC.
2
6/12/02
Tel: 973-773-2299
Fax: 973-773-9672
http://www.datadelay.com


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