Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Model
XDL21
-
8
-
140
Rev.
C
Delay Line
DESCRIPTION
The XDL21-8-140 is a surface mount delay line that uses a slow wave
coupling structure that maximizes the amount of delay per unit area over
other distributed delay structures. The XDL21-8-140 can be used in
amplifier linearization applications from 2110 – 2170MHz. The XDL21-8-
140 is ideal for use in the main loop of feed forward and in pre-distortion
amplifiers. The Xinger® delay lines are a low cost, high quality alternative to
the traditional coaxial and filter solutions presently available. Parts have
been subjected to rigorous qualification testing and units are 100% tested.
ELECTRICAL SPECIFICATIONS
Frequency (MHz.) 2110 – 2170
UMTS Band
Mean Delay (nS) 13.8±0.28
Deviation from Linear Phase (Degrees
Max) ±1.0
Amplitude Flatness
(dB p-p) 0.15
Return Loss (dB min) 20
Insertion Loss (dB/nS) 0.55
Power Handling (Watts) 1
ΘJC (°C/watts) 5
Features:
• UMTS Band
• Production Friendly
• Consistent Delay
• Stable Over Temperature
• Surface Mountable
• Available in Tape & Reel
• Non-Lead Solder Paste
Compatible
• 100% Tested
• Lead Free
Operating Temp. (°C)
-55 to +85
Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 Ω nominal
impedance. Specifications subject to change without notice.
OUTLINE DRAWING
.134
±.015
[3.39
±0.38
]
1.000
±.010
[25.40
±0.25
]
1.000
±.010
[25.40
±0.25
]
2X .070
±.004
SQ
[1.78
±0.10
]
Pin 2 Pin 1
Top View (Near-side) Side View Bottom View (Far-side)
XDL21-8-140 Mechanical Outline
Dimensions are in Inches [Millimeters]
Hot
Via
2X .037
±.004
[0.94
±0.10
]
GND
2X .062
±.004
[1.58
±0.10
]
GND
Orientation
Marker Denotes
Pin Location
Tolerances are Non-Cumulative
.774
±.004
[19.65
±0.10
]
Hot
Via Hot
Via
.773
±.004
[19.64
±0.10
]
.848
±.004
[21.54
±0.10
]
2X R.116
Denotes
Array Number
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Available on Tape and
Reel For Pick and Place
Manufacturing.
Model
XDL21
-
8
-
140
Rev. C
Typical Performance: 500 MHz to 2500 MHz
Return Loss
-70
-60
-50
-40
-30
-20
-10
0
500 1000 1500 2000 2500
Frequency [MHz]
Return Loss [dB]
Insertion Loss
-10
-8
-6
-4
-2
0
500 1000 1500 2000 2500
Frequency [MHz]
Insertion Loss [dB]
AVERAGE DELAY
The average delay is defined as the group delay of the input signal through the delay line. The lot-to-lot variation is
reflected in the plus/minus tolerance given in specifications.
Refer to Anaren Application Note AAN-232 for further information on Xinger delay lines.
MOUNTING GUIDELINES:
XDL21-8-140 Mounting Footprint
Dimensions are in Inches [Millimeters]
2X 50
Transmission
Line
2X .076 SQ
[1.93]
To insure proper electrical and thermal performance
there must be a ground plane with 100%
solder connection underneath the part
2X Ø.116
[2.95]
.869
[22.06]
.848
[21.54]
.889
[22.58]
Multiple
plated thru holes
to ground
2X .037
[0.94]
2X .037
[0.94]
In order for Xinger surface mount delay lines to work
optimally, there must be 50Ω transmission lines leading to
and from all of the RF ports. Also, there must be a very
good ground plane under the part with a number of plated
thru holes to ensure proper electrical performance. If any
of these conditions are not satisfied, insertion loss,
average delay and VSWR may not meet published
specifications.
When a surface mount delay line is mounted to a printed
circuit board (PCB), the primary concerns are; insuring
the RF pads of the device are in contact with the circuit
trace of the PCB and the ground plane of neither the
component nor the PCB are in contact with the RF signal.
An example of how
the PCB footprint could look is shown
below. In particular designs, the 50Ω lines need to be
adjusted to the unique dielectric coefficients and
thicknesses as well as varying pick and place equipment
tolerances.
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Model
XDL21
-
8
-
140
Rev.
C
Packaging _
Parts are oriented in embossed tape as shown below
Orientation
Marker
Reel
REEL DIMENSIONS (inches [mm])
ØA
B
ØC
1.732 [44.00]
4.017 [102.03]
13.0 [330.0]
250
QUANTITY/REEL
TABLE 1
ØD
0.512 [13.0]
ØD
B
ØA ØC
• Parts are available in both reel and tube
• Quantity of 19 parts available per tube
