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3D7225 Datasheet(PDF) 3 Page - Data Delay Devices, Inc.

Part No. 3D7225
Description  MONOLITHIC 5-TAP FIXED DELAY LINE (SERIES 3D7225)
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Maker  DATADELAY [Data Delay Devices, Inc.]
Homepage  http://www.datadelay.com
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3D7225 Datasheet(HTML) 3 Page - Data Delay Devices, Inc.

   
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3D7225
Doc #05002
DATA DELAY DEVICES, INC.
3
4/15/05
3 Mt. Prospect Ave. Clifton, NJ 07013
APPLICATION NOTES (CONT’D)
custom reference designator identifying the
intended frequency and duty cycle of operation.
The programmed delay accuracy of the device is
guaranteed, therefore, only for the user specified
input characteristics. Small input pulse width
variation about the selected pulse width 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.
POWER SUPPLY AND
TEMPERATURE CONSIDERATIONS
The delay of CMOS integrated circuits is strongly
dependent on power supply and temperature.
The monolithic 3D7225 programmable delay line
utilizes novel and innovative compensation
circuitry to minimize the delay variations induced
by fluctuations in power supply and/or
temperature.
The thermal coefficient is reduced to 250 PPM/C,
which is equivalent to a variation, over the -40C
to 85C operating range, of
±2% from the room-
temperature delay settings and/or 1.0ns,
whichever is greater. The power supply
coefficient is reduced, over the 4.75V-5.25V
operating range, to
±1% of the delay settings at
the nominal 5.0VDC power supply and/or 1.0ns,
whichever is greater. It is essential that the
power supply pin be adequately bypassed
and filtered. In addition, the power bus
should be of as low an impedance
construction as possible. Power planes are
preferred.
DEVICE SPECIFICATIONS
TABLE 2: ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN
MAX
UNITS
NOTES
DC Supply Voltage
VDD
-0.3
7.0
V
Input Pin Voltage
VIN
-0.3
VDD+0.3
V
Input Pin Current
IIN
-1.0
1.0
mA
25C
Storage Temperature
TSTRG
-55
150
C
Lead Temperature
TLEAD
300
C
10 sec
TABLE 3: DC ELECTRICAL CHARACTERISTICS
(-40C to 85C, 4.75V to 5.25V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Static Supply Current*
IDD
3.5
5.5
mA
High Level Input Voltage
VIH
2.0
V
Low Level Input Voltage
VIL
0.8
V
High Level Input Current
IIH
1.0
µA
VIH = VDD
Low Level Input Current
IIL
1.0
µA
VIL = 0V
High Level Output
Current
IOH
-35.0
-4.0
mA
VDD = 4.75V
VOH = 2.4V
Low Level Output Current
IOL
4.0
15.0
mA
VDD = 4.75V
VOL = 0.4V
Output Rise & Fall Time
TR & TF
2.0
2.5
ns
CLD = 5 pf
*IDD(Dynamic) = 5 * CLD * VDD * F
Input Capacitance = 10 pf typical
where: CLD = Average capacitance load/tap (pf)
Output Load Capacitance (CLD) = 25 pf max
F = Input frequency (GHz)


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