Datasheet DDU18 Datasheet (data delay devices)

Page 1
data
DDU18
8-TAP, ECL-INTERFACED
3
FIXED DELAY LINE (SERIES DDU18)
FEATURES PACKAGES
Eight equally spaced outputs
Fits in 400 mil 24-pin DIP socket
Input & outputs fully 100K-ECL interfaced & buffered
FUNCTIONAL DESCRIPTION
The DDU18-series device is a 8-tap digitally buffered delay line. The signal input (IN) is reproduced at the outputs (T1-T8), shifted in time by an amount determined by the device dash number (See Table). For dash numbers less than 16, the total delay of the line is measured from T1 to T8. The nominal tap-to-tap delay increment is given by one-seventh of the total delay, and the inherent delay from IN to T1 is nominally 2.0ns. For dash numbers greater than or equal to 16, the total delay of the line is measured from IN to T8. The nominal tap-to-tap delay increment is given by one-eighth of this number.
DDU18-xx DIP DDU18-xxM Military DIP
GND
GND
GND
1
T1
3
T2
4
T3
5
6
7
T4
8
T5
9
T6
10
T7
11
T8
12
delay devices,
IN
24
GND
19
VEE
18
GND
13
PIN DESCRIPTIONS
IN Signal Input T1-T8 Tap Outputs VEE -5 Volts GND Ground
inc.
N/C
T1 T2 T3
T4 T5 T6 T7 T8
1 2 3 4 5 6 7 8 9 10 11
GND
GND GND
DDU18-xxC4 SMD DDU18-xxMC4 Mil SMD
IN
24
N/C
23
N/C
22
N/C
21
N/C
20
GND
19
VEE
18
N/C
17
N/C
16
N/C
15
N/C
14
GND
SERIES SPECIFICATIONS
Minimum input pulse width: 40% of total delay
Output rise time: 2ns typical
Supply voltage: -5VDC ± 5%
Power dissipation: 500mw typical (no load)
Operating temperature: 0° to 85° C
Temp. coefficient of total delay: 100 PPM/°C
1/7 1/7 1/7 1/7
2.0ns 1/7 1/7 1/7
VCC GNDIN T1 T2 T3 T4
Functional diagram for dash numbers < 16
1/8 1/8 1/8 1/8
1/8
VCC GNDIN T1 T2 T3 T4
Functional diagram for dash numbers >= 16
2004 Data Delay Devices
T5 T6 T7 T8
1/8 1/8 1/8
T5 T6 T7 T8
DASH NUMBER SPECIFICATIONS
Part
Number
DDU18-4 DDU18-8 DDU18-12 DDU18-16 DDU18-20 DDU18-24 DDU18-32 DDU18-40 DDU18-48 DDU18-56 DDU18-64 DDU18-72 DDU18-80 DDU18-100 DDU18-120 DDU18-160 DDU18-200
* Total delay is referenced to first tap output Input to first tap = 2.0ns ± 1ns
NOTE: Any dash number between 4 and 200 not shown is also available.
Total
Delay (ns)
3.5 ± 1.0 * 0.5 ± 0.3
7.0 ± 1.0 * 1.0 ± 0.4
10.5 ± 1.0 * 1.5 ± 0.4 16 ± 1.0 2.0 ± 0.5 20 ± 1.0 2.5 ± 1.0 24 ± 1.2 3.0 ± 1.5 32 ± 1.6 4.0 ± 2.0 40 ± 2.0 5.0 ± 2.0 48 ± 2.4 6.0 ± 2.0 56 ± 2.8 7.0 ± 2.0 64 ± 3.2 8.0 ± 2.0 72 ± 3.6 9.0 ± 2.0 80 ± 4.0 10.0 ± 2.5
100 ± 5.0 12.5 ± 2.5 120 ± 6.0 15.0 ± 3.0 160 ± 8.0 20.0 ± 4.0
200 ± 10.0 25.0 ± 5.0
Delay Per
Tap (ns)
Doc #97041 DATA DELAY DEVICES, INC. 1
5/5/04 3 Mt. Prospect Ave. Clifton, NJ 07013
Page 2
DDU18
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU18 tolerances are guaranteed for input pulse widths and periods greater than those specified in the test conditions. Although the device will function properly for pulse widths as small as 40% of the total delay and periods as small as 80% of the total delay (for a symmetric input), the delays may deviate from their values at low frequency. However, for a given input condition, the deviation will be repeatable from pulse to pulse. Contact technical support at Data
Delay Devices if your application requires device testing at a specific input condition.
POWER SUPPLY BYPASSING
The DDU18 relies on a stable power supply to produce repeatable delays within the stated tolerances. A 0.1uf capacitor from VEE to GND, located as close as possible to the VEE pin, is recommended. A wide VEE trace and a clean ground plane should be used.
DEVICE SPECIFICATIONS
TABLE 1: ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL MIN MAX UNITS NOTES
DC Supply Voltage VEE -7.0 0.3 V Input Pin Voltage VIN VEE - 0.3 0.3 V Storage Temperature T Lead Temperature T
STRG
300 C 10 sec
LEAD
TABLE 2: DC ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
High Level Output Voltage VOH -1.025 -0.880 V Low Level Output Voltage VOL -1.810 -1.620 V High Level Input Voltage VIH -1.165 -0.880 V Low Level Input Voltage VIL -1.810 -1.475 V High Level Input Current IIH 340 Low Level Input Current IIL 0.5
-55 150 C
(0C to 85C)
V
IH
V
IL
µA µA
VIH = MAX VIL = MIN
= MAX,50 to -2V
= MIN, 50 to -2V
Doc #97041 DATA DELAY DEVICES, INC. 2
5/5/04 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
Page 3
DDU18
PACKAGE DIMENSIONS
19 18
146
.018 TYP.
53 78910
1.300 MAX.
1.100 TYP.
.100 TYP.
1324
.530 MAX.
1211
.300
.015
MAX.
TYP.
.130
.030
±
.012 TYP.
.400 TYP.
DDU18-xx (Commercial DIP) DDU18-xxM (Military DIP)
.020 TYP. .040 TYP.
.010±.002
1718192021222324
123456789101112
1.100
1.280±.020
13141516
.100.090
DDU18-xxC4 (Commercial SMD) DDU18-xxMC4 (Military SMD)
.710
.005
±
.590
MAX.
.280 MAX.
.007
.005
±
±
.050
.010
±
.882
.005
Doc #97041 DATA DELAY DEVICES, INC. 3
5/5/04 3 Mt. Prospect Ave. Clifton, NJ 07013
Page 4
DDU18
DELAY LINE AUTOMATED TESTING
TEST CONDITIONS
INPUT: OUTPUT: Ambient Temperature: 25oC ± 3oC Load: 50 to -2V Supply Voltage (Vcc): -5.0V ± 0.1V C Input Pulse: Standard 10KH ECL Threshold: (V
levels (Rising & Falling)
Source Impedance: 50 Max. Rise/Fall Time: 2.0 ns Max. (measured
between 20% and 80%)
Pulse Width: PW Period: PER
= 1.5 x Total Delay
IN
= 10 x Total Delay
IN
NOTE: The above conditions are for test only and do not in any way restrict the operation of the device.
: 5pf ± 10%
load
OH
+ VOL) / 2
PULSE
GENERATOR
INPUT SIGNAL
OUT
TRIG
IN T2
PW
T
RISE
80% 80%
DEVICE UNDER
TEST (DUT)
Test Setup
IN
V
IH
50%50%
20%20%
PER
FALL
REF
IN
TRIG
V
IL
OSCILLOSCOPE
T1
T3
T4
T5
T6
T7
T8
IN
T
D
RISE
OUTPUT
V
SIGNAL
Timing Diagram For Testing
Doc #97041 DATA DELAY DEVICES, INC. 4
OH
D
FALL
50%50%
V
OL
5/5/04 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
Loading...