Doc #97030 DATA DELAY DEVICES, INC. 1
2/7/97 3 Mt. Prospect Ave. Clifton, NJ 07013
5-TAP SMD DELAY LINE
T
D
/T
R
= 3
(SERIES 1518)
FEATURES PACKAGES
• 5 taps of equal delay increment
• Delays to 200ns
• Low profile
• Epoxy encapsulated
• Meets or exceeds MIL-D-23859C
FUNCTIONAL DESCRIPTION
The 1518-series device is a fixed, single-input, five-
output, passive delay line. The signal input (IN) is
reproduced at the outputs (T1-T5) in equal increments.
The delay from IN to T5 (T
D
) and the characteristic
impedance of the line (Z) are determined by the dash
number. The rise time (T
R
) of the line is 30% of T
D
, and
the 3dB bandwidth is given by 1.05 / T
D
. The device is
available in a 14-pin SMD with two pinout options.
Part numbers are constructed according to the scheme
shown at right. For example, 1518-101-500A is a 100ns,
50Ω delay line with pinout code A. Similarly, 1518-151-
501 a is 150ns, 500Ω delay line with standard pinout.
SERIES SPECIFICATIONS
• Dielectric breakdown: 50 Vdc
• Distortion @ output: 10% max.
• Operating temperature: -55°C to +125°C
• Storage temperature: -55°C to +125°C
• Temperature coefficient: 100 PPM/°C
GND
IN T5
T1 T2 T3 T4
GND
Functional Diagram
Package Dimensions
.290
1 7
814
.018
.425
delay
devices, inc.
14
13
12
11
10
9
8
1
2
3
4
5
6
7
IN
N/C
T2
N/C
T4
T5
GND
N/C
T1
N/C
T3
N/C
N/C
N/C
IN Signal Input
T1-T5 Tap Outputs
GND Ground
Note: Standard pinout shown
Alt. pinout available
DELAY TIME
Expressed in nanoseconds (ns)
First two digits are significant figures
Last digit specifies # of zeros to follow
IMPEDANCE
Expressed in nanoseconds (ns)
First two digits are significant figures
Last digit specifies # of zeros to follow
PINOUT CODE
See Table
Omit for STD pinout
1518 - xxx - zzz p
DELAY SPECIFICATIONS
T
D
T
I
T
R
ATTENUATION (%) TYPICAL
(ns) (ns) (ns)
Z=50ΩΩ Z=100ΩΩ Z=200ΩΩ Z=300ΩΩ Z=500ΩΩ
5 1.0 3.0 N/A 5 N/A N/A N/A
10 2.0 4.0 3 5 5 N/A N/A
15 3.0 5.0 3 5 5 N/A N/A
20 4.0 6.0 3 5 5 5 N/A
25 5.0 7.0 3 5 5 5 7
30 6.0 10.0 3 5 5 5 7
40 8.0 13.0 3 5 5 5 7
50 10.0 15.0 3 5 5 7 7
60 12.0 20.0 3 5 6 7 8
75 15.0 25.0 3 5 6 7 8
80 16.0 26.0 4 5 6 7 8
100 20.0 30.0 4 5 6 7 8
110 22.0 32.0 4 5 6 7 8
125 25.0 40.0 4 5 6 7 8
150 30.0 50.0 N/A 5 8 10 10
180 36.0 60.0 N/A 7 8 10 10
200 50.0 70.0 N/A 8 10 12 12
Notes: T
I
represents nominal tap-to-tap delay increment
Tolerance on T
D
= ±±5% or ±±2ns, whichever is greater
Tolerance on T
I
= ±±5% or ±±1ns, whichever is greater
“N/A” indicates that delay is not available at this Z
PINOUT CODES
CODE IN T1 T2 T3 T4 T5 GND
STD 1 13 3 11 5 6 7
A 1 12 4 10 6 7 8,14
1997 Data Delay Devices