ISG56525
5 TO 65 MHz SILICON CATV
25 dB HYBRID AMPLIFIER
OUTLINE DIMENSIONS
(Units in mm [inches])
45.08 [1.775] MAX
38.10
0.25 [1.500
.010]
3.49 [.137]
14.85 [.585] MAX
2
4.00
[
.157
]
THRU
+0.14
-0.24
+.006
-.009
27.30 [1.075] MAX
8.04 [.317]
3.96 [.156]
[
.315
]
+.005
-.008
+0.13
-0.20
8.00
0.51
0.05 [.020
.002]
5.08
0.13 [.200
.005]
2.54
0.13 [.100
.005]
21.08 [.830]
10.20
0.25 [.402
.010]
25.40
0.25 [1.000
.010]
17.44 [.687]
9.84 [.387]
2
6-32 UNC-2B
4.20
0.13 [.165
.005]
[
.500
]
+.010
-.035
+0.25
-0.89
12.70
2
[
]
+4.15
-3.85
+.163
-.152
2.54
0.38 [.100
.015]
8.60
0.25
[.340
.010]
10.75
0.25 [.423
.010]
IN
OUT
GND
V
CC
1
9
2 3
5
7 8
PART NUMBER
ISG56525
SYMBOLS
PARAMETERS CONDITIONS
UNITS
MIN
TYP
MAX
GA
Gain
dB
24.5
25.2
26
G
Gain Flatness
dB
0.15
RL
IN
Input Return Loss
dB
20
25
RL
OUT
Output Return Loss
dB
19
21
NF
Noise Figure
dB
3.1
3.5
CTB
Composite triple beat
See Note 1
dBc
-64
-60
XM
Cross Modulation (+50 dBmV/CH)
See Note 1
dBc
-54
-51
CSO
2nd Order Intermodulation Product
See Note 1
dBc
-70
-65
P
1dB
Output Power at 1dB Gain Compression point
dBmV
75
76
V
CC
Supply Voltage
V
24
I
OP
Operating Current
mA
105
117
130
BW
Bandwidth
MHz
5
65
Input & Output Impedance
ohms
75
ELECTRICAL CHARACTERISTICS
(V
CC
= 24 V, 10% T
A
= 25C, 75
System)
ISG56525
Note:
1. Composite Triple Beat, Cross Modulation, 2nd Order Distortion are all measured with 7 channels (T7 through T13) at 50 dBmV/ch output and
at 25C.
Performance tests and ratings for Sirenza Microdevices products were performed internally by Sirenza and measured using specific computer systems and/or components and reflect the approximate
performance of the products as measured by those tests. Any difference in circuit implementation, test software, or test equipment may affect actual performance. The information provided herein is
believed to be reliable at press time and Sirenza Microdevices assumes no responsibility for the use of this information. All such use shall be entirely at the users own risk. Prices and specifications for
Sirenza Microdevices products are subject to change without notice. Buyers should consult Sirenza Microdevices standard terms and conditions of sale for Sirenzas limited warranty with regard to its
products. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any product for use in life-
support devices and/or systems.
REV. C
4/1/2005
1
303 S. Technology Court, Broomfield, CO 80021 303-327-3030 www.sirenza.com
FEATURES
FLAT GAIN RESPONSE FROM 5 TO 65 MHz: f =
0.2
dB
INPUT AND OUTPUT MATCHING TO 75 OHMS: R
L
= > 19 dB
LOW DISTORTION: P1dB =
78
dBmV
LOW NOISE: 3.1dB
AUTOMATED SURFACE MOUNT CONSTRUCTION
DESCRIPTION
The ISG56525 is a low noise, low distortion hybrid amplifier specified
for use in return path HFC Cable TV applications. The ISG56525 is
comprised of 100% surface mount components, including high
performance silicon transistors. It features excellent noise, gain, and
thermal stability across a wide range of operating conditions and
frequencies.The amplifiers are manufactured to ISO9002 standards
are very rugged and exhibit excellent unit to unit uniformity.
TYPICAL PERFORMANCE CURVES
(T
A
= 25C)
NOISE FIGURE
FdB
(0.5
/
DIV)
Frequency (6.0 MHz / DIV)
START 5.0 MHz
STOP 65.0 MHz
5.5
0.5
INPUT RETURN LOSS
START
5.0 MHz
STOP
65.0 MHz
CH2
C2
S11
log MAG
10 dB/ REF 0 dB
2
1
3
1: -27.605 dB
7.250 MHz
2: -27.684 dB
50.0 MHz
3: -26.346 dB
65.0 MHz
50
40
30
20
10
0
-10
-20
-30
-40
-50
GAIN vs. FREQUENCY
START
5.0 MHz
STOP
65.0 MHz
CH1
C2
2
4
S21
log MAG
1 dB/ REF 25 dB
1
3
5
1: 25.391 dB
5.0 MHz
2: 25.282 dB
15.0 MHz
3: 25.189 dB
35.0 MHz
4: 25.149 dB
55.0 MHz
5: 25.146 dB
65.0 MHz
30
29
28
27
26
25
24
23
22
21
20
OUTPUT RETURN LOSS
START
5.0 MHz
STOP
65.0 MHz
CH2
C2
S22
log MAG
10 dB/ REF 0 dB
1
3
1: -21.27 dB
7.250 MHz
2: -24.622 dB
50.0 MHz
3: -26.706 dB
65.0 MHz
2
C
50
40
30
20
10
0
-10
-20
-30
-40
-50
80.00
79.00
78.00
77.00
76.00
75.00
74.00
73.00
72.00
71.00
70.00
69.00
68.00
40.00
42.00
44.00
46.00
48.00
50.00 52.00
54.00
56.00
1 dB Compression at 65 MHz
power in vs power out @ 65 MHz
Output
Power,
P
OUT
(dBmv)
Input Power, P
IN
(dBmv)
ABSOLUTE MAXIMUM RATINGS
1
(T
C
= 25 C unless otherwise noted)
SYMBOLS
PARAMETERS
UNITS
RATINGS
V
CC
DC Supply
V
DC
+28
V
IN
RF Input Voltage
(Single Tone)
dBmV
+70
T
C
Operating Case
Temperature Range
C
-40 to +100
T
STG
Storage Temperature
Range
C
-40 to +100
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
ISG56525
DATA SUBJECT TO CHANGE WITHOUT NOTICE
REV. C
4/1/2005
2
303 S. Technology Court, Broomfield, CO 80021 303-327-3030 www.sirenza.com
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