C-Band Line Driver Amplifiers
LD-5S Series
LD-5S series C-Band Line Driver Amplifiers (LDAs) are specially designed for use in satellite earth stations
and general purpose telecommunications applications. Utilizing proven GaAs FET technology, these
amplifiers have been designed for reliable operation in both fixed and transportable applications.
Options
Features
•
•
•
•
•
•
GaAs FET design
Internal regulator
Reverse polarity protection
Input/output isolators
High reliability
SMA (F) connectors
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22, 32, or 42 dB minimum gain
+20 or +25 dBm min. output power at P1 dB
Transmit or receive frequency bands
LD-5S Series Typical Gain vs. Frequency
Gain
(dB)
LDC5S422
45
40
LDC5S322
LDR5S322
LDD5S222
LDM5S222
35
30
25
3.4
3.6
3.8
4.0
4.2
5.85
6.425
6.725
Frequency (GHz)
Part Number/Ordering Information
LDM5SNNN
Frequency Range
Min. Gain
Min. Output Power (at P1 dB)
3.60–4.20 GHz = C
3.40–4.20 GHz = D
5.85–6.425 GHz = M
5.85–6.725 GHz = R
22 dB = 22
32 dB = 32
42 dB = 42
+20 dBm = 2
+25 dBm = 3
Example:
LDC5S222 = 3.60-4.20 GHz, 22 dB min. gain, +20 dBm min. P1 dB.
Typical Applications
Single-Thread Rx/Tx System:
ANTENNA
LOW NOISE
AMPLIFIER
(LNA)
LINE DRIVER
AMPLIFIER
(LDA)
INTERFACILITY
LINK (IFL)
TO CONVERTER
SOLID-STATE
POWER AMPLIFIER
(SSPA)
LDA
IFL
FROM CONVERTER
1:1 Redundant System (Rx)
1:1 LNA SYSTEM
ANTENNA
1:1 LDA SYSTEM
LNA 1
LDA 1
IFL
TO CONVERTER
LNA 2
1:1 LNA
CONTROLLER
LDA 2
1:1 LDA
CONTROLLER
Specifications
LD-5S Series
Parameter
Notes
Min.
Frequency
Band “C”
Band “D”
Band “M”
Band “R”
3.60
3.40
5.85
5.85
Gain
“-5S22x”
“-5S32x”
“-5S42x”
22
32
42
Gain Flatness
Full band
Per 40 MHz
Noise Figure
†
Nom./Typ.
Max.
Units
4.20
4.20
6.425
6.725
GHz
GHz
GHz
GHz
25
35
45
2.7
dB
dB
dB
±0.5
±0.2
dB
dB
3.5
dB
Power Output
at 1 dB compression
“-5Sxx2” (Standard)
“-5Sxx3” (High power)
+20
+25
+21
+26
dBm
dBm
Third Order Output
Intercept Point
“-5Sxx2” (Standard)
“-5Sxx3” (High power)
+30
+35
+31
+36
dBm
dBm
Group Delay per 40 MHz
Linear
Parabolic
Ripple
VSWR
Input
Output
Maximum Input Power
Damage threshold
Connectors
Input/Output
Power
Power Requirements
Voltage
Current (Standard)
Current (High power)
+11
Temperature Range
Operating; case
0
†
1.25
1.25
0.03
0.003
1.0
ns/MHz
2
ns/MHz
ns p-p
1.35
1.35
:1
:1
+10
dBm
+16
250
350
Vdc
mA
mA
+60
°C
SMA Female
RFI Filter Solder Terminal
+12
200
300
When there is only one value on a line, the Nom./Typ. column is a nominal value; otherwise it is a typical value. Typical values
are intended to illustrate typical performance, but are not guaranteed.
Outline Drawing
V+
GND
IN
OUT
1.50
(38.1)
1.00
(25.4)
0.56
(14.2)
0.88
(22.3)
3.50
(88.9)
1.00
(25.4)
0.56
(14.2)
5.25
(133.3)
0.88
(22.2)
#4-40 x 0.25 DP. (2 PLCS.)
0.42
(10.7)
0.44
(11.2)
2.62
(66.5)
#4-40 x 0.25 DP. (2 PLCS.)
NOTES:
1) DIMENSIONS ARE IN INCHES (mm).
2) TOLERANCE +/-0.015 (0.4)
SMA FEMALE
(2 PLACES)
0.75
(19.1)
0.08
(2.0)
3.34
(84.8)
Outline 6114
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60 Decibel Road, Suite 200 • State College, PA 16801 USA • Tel. +1-814-238-2700 • FAX +1-814-238-6589
Email: satcom@gd-ms.com • www.gdsatcom.com/electronics.php
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16839
Rev. A