data delay devices PDU1016H Service Manual
PDU1016H
data
3
1
12
24
13
N/C
IN
N/C
N/C
PDU1016H-100
100.0 ± 10.0 1500 ± 75.0
查询PDU1016H供应商
4-BIT, ECL-INTERFACED
PROGRAMMABLE DELAY LINE
(SERIES PDU1016H)
delay
devices,
inc.
FEATURES PACKAGES
GND
• Digitally programmable in 16 delay steps
ENB
1
2
• Monotonic delay-versus-address variation
• Precise and stable delays
• Input & outputs fully 10KH-ECL interfaced & buffered
• Fits 32-pin DIP socket
VEE
GND
VEE
A0
7
8
9
IN
11
A3
15
16
FUNCTIONAL DESCRIPTION
The PDU1016H-series device is a 4-bit digitally programmable delay line.
The delay, TDA, from the input pin (IN) to the output pin (OUT) depends on
the address code (A3-A0) according to the following formula:
TDA = TD0 + T
where A is the address code, T
and TD0 is the inherent delay of the device. The incremental delay is specified by the dash number of the
device and can range from 0.5ns through 100ns, inclusively. The enable pin (ENB) is held LOW during
normal operation. When this signal is brought HIGH, OUT is forced into a LOW state. The address is not
latched and must remain asserted during normal operation.
INC
* A
is the incremental delay of the device,
INC
GND
32
OUT
31
A1
26
A2
25
GND
24
N/C
OUT
GND
ENB
N/C
N/C
N/C
GND
ENB
N/C
PDU1016H-xxC4 SMD
PDU1016H-xxMC4 Mil SMD
PDU1016H-xx DIP
PDU1016H-xxM Mil DIP
PIN DESCRIPTIONS
IN Signal Input
OUT Signal Output
A0-A3 Address Bits
ENB Output Enable
VEE -5 Volts
GND Ground
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
A2
A1
VEE
A0
N/C
N/C
N/C
VEE
A3
N/C
SERIES SPECIFICATIONS
• Total programmed delay tolerance: 5% or 1ns,
whichever is greater
• Inherent delay (TD0): 5.5ns typical for dash numbers
up to 5, greater for larger #’s
• Setup time and propagation delay:
Address to input setup (T
Disable to output delay (T
• Operating temperature: 0° to 70° C
• Temperature coefficient: 100PPM/°C (excludes TD0)
• Supply voltage VEE: -5VDC ± 5%
• Power Dissipation: 615mw typical (no load)
• Minimum pulse width: 20% of total delay
NOTE: Any dash number between .5 and 100
not shown is also available.
2001 Data Delay Devices
): 3.6ns
AIS
): 1.7ns typical
DISO
DASH NUMBER SPECIFICATIONS
Part
Number
PDU1016H-.5
PDU1016H-1
PDU1016H-2
PDU1016H-3
PDU1016H-4
PDU1016H-5
PDU1016H-6
PDU1016H-8
PDU1016H-10
PDU1016H-15
PDU1016H-20
PDU1016H-25
PDU1016H-30
PDU1016H-40
PDU1016H-50
PDU1016H-60
PDU1016H-80
Incremental Delay
Per Step (ns)
0.5 ± 0.3 7.5 ± 1.0
1.0 ± 0.5 15 ± 1.0
2.0 ± 0.5 30 ± 1.5
3.0 ± 1.0 45 ± 2.2
4.0 ± 1.0 60 ± 3.0
5.0 ± 1.0 75 ± 3.7
6.0 ± 1.0 90 ± 4.5
8.0 ± 1.0 120 ± 6.0
10.0 ± 1.5 150 ± 7.5
15.0 ± 1.5 225 ± 11.2
20.0 ± 2.0 300 ± 15.0
25.0 ± 2.5 375 ± 18.8
30.0 ± 3.0 450 ± 22.5
40.0 ± 4.0 600 ± 30.0
50.0 ± 5.0 750 ± 37.5
60.0 ± 6.0 900 ± 45.0
80.0 ± 8.0 1200 ± 60.0
Delay (ns)
Total
Doc #97044 DATA DELAY DEVICES, INC. 1
11/1/01 3 Mt. Prospect Ave. Clifton, NJ 07013
PDU1016H
APPLICATION NOTES
ADDRESS UPDATE
The PDU1016H is a memory device. As such,
special precautions must be taken when
changing the delay address in order to prevent
spurious output signals. The timing restrictions
are shown in Figure 1.
After the last signal edge to be delayed has
appeared on the OUT pin, a minimum time, T
is required before the address lines can change.
This time is given by the following relation:
T
where A
= max { (Ai - A
OAX
and Ai are the old and new address
i-1
i-1
) * T
INC
, 0 }
codes, respectively. Violation of this constraint
may, depending on the history of the input signal,
cause spurious signals to appear on the OUT pin.
The possibility of spurious signals persists until
the required T
has elapsed.
OAX
A similar situation occurs when using the ENB
signal to disable the output while IN is active. In
this case, the unit must be held in the disabled
state until the device is able to “clear” itself. This
is achieved by holding the ENB signal high and
the IN signal low for a time given by:
OAX
spurious signals persists until the required T
DISH
has elapsed.
INPUT RESTRICTIONS
There are three types of restrictions on input
pulse width and period listed in the AC
Characteristics table. The recommended
conditions are those for which the delay tolerance
,
specifications and monotonicity are guaranteed.
The suggested conditions are those for which
signals will propagate through the unit without
significant distortion. The absolute conditions
are those for which the unit will produce some
type of output for a given input.
When operating the unit between the
recommended and absolute conditions, the
delays may deviate from their values at low
frequency. However, these deviations will remain
constant from pulse to pulse if the input pulse
width and period remain fixed. In other words,
the delay of the unit exhibits frequency and pulse
width dependence when operated beyond the
recommended conditions. Please consult the
technical staff at Data Delay Devices if your
application has specific high-frequency
requirements.
T
= Ai * T
DISH
INC
Violation of this constraint may, depending on the
history of the input signal, cause spurious signals
to appear on the OUT pin. The possibility of
A3-A0
T
AENS
A
i-1
ENB
T
ENIS
PW
IN
IN
TD
PW
A
OUT
OUT
Figure 1: Timing Diagram
Please note that the increment tolerances listed
represent a design goal. Although most delay
increments will fall within tolerance, they are not
guaranteed throughout the address range of the
unit. Monotonicity is, however, guaranteed over
all addresses.
A
i
T
OAX
T
AIS
T
DISH
T
DISO
Doc #97044 DATA DELAY DEVICES, INC. 2
11/1/01 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
Loading...