3D7444 datasheet(4/6 Pages) DATADELAY

Part #	3D7444

Description	MONOLITHIC QUAD 4-BIT PROGRAMMABLE DELAY LINE (SERIES 3D7444)

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Manufacturer	DATADELAY [Data Delay Devices, Inc.]

Direct Link	http://www.datadelay.com

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4 / 6 page

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

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