The amplifier is ideally suited for use in CATV return
path applications, including DOCSIS 3.1 systems: it
offers low distortion and low noise figure with high
gain. It typically provides 3.1 dB noise figure,
21.2 dB gain, and 30 dB MER up to 57 dBmV per
channel for 16-Channel 64 QAM signaling while
drawing 290 mA DC current @ 5 V bias.
FB-
N/C
N/C
N/C
Pin Configuration
3
Pin No.
1
2
3
4
Pin Name
RF
IN
+
A
BIAS
A
A
BIAS
B
RF
IN
-
FB-
N/C
N/C
N/C
RF
OUT
-
V
CC
1B
V
CC
1A
RF
OUT
+
N/C
N/C
N/C
FB+
Pad
4
Description
RF Input +
Active Bias A
Active Bias B
RF Input -
Feedback -
No Connection
No Connection
No Connection
RF Output (DC Bias) -
V
CC
Bias 1B
V
CC
Bias 1A
RF Output (DC Bias) +
No Connection
No Connection
No Connection
Feedback +
RF and DC Ground
Ordering Information
1,2
Part Number
MAAM-011185-TR1000
MAAM-011185-TR3000
MAAM-011185-001SMB
Package
1000 piece reel
3000 piece reel
Sample Board
5
6
7
8
9
10
11
12
13
14
15
16
17
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
3. All pins listed as ‘No Connection’ should be grounded.
4. The exposed pad centered on the package bottom must be
connected to RF and DC ground.
* Restrictions on Hazardous Substances, European Union Directive 2011/65/EU.
1
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAM-011185
CATV Return Path Differential Amplifier
5 - 300 MHz
Electrical Specifications
5
: T
A
= +25°C, V
CC
= 5 V, I
CC
= 290 mA, Z
0
= 75 Ω
Parameter
Gain
Input Return Loss
Output Return Loss
Reverse Isolation
Noise Figure
P1dB
OIP3
Test Conditions
P
IN
= -10 dBm, 100 MHz
P
IN
= -10 dBm, 205 MHz
P
IN
= -10 dBm, 250 MHz
5 - 300 MHz
5 - 300 MHz
5 - 300 MHz
5 - 205 MHz
205 - 300 MHz
I
CC
= 290 mA, 5 - 300 MHz
I
CC
= 320 mA, 5 - 300 MHz
12 dBm P
OUT
per tone, 6 MHz spacing,
I
CC
= 290 mA, 5 - 300 MHz
I
CC
= 320 mA, 5 - 300 MHz
12 dBm P
OUT
per tone, 6 MHz spacing,
I
CC
= 290 mA, 5 - 205 MHz
I
CC
= 320 mA, 5 - 205 MHz
I
CC
= 290 mA, 205 - 300 MHz
I
CC
= 320 mA, 205 - 300 MHz
16 Channels,
I
CC
= 290 mA, 5 - 205 MHz
I
CC
= 320 mA, 5 - 205 MHz
R2 = 1.33 kΩ
Units
dB
dB
dB
dB
dB
dBm
dBm
Min.
20.5
20.5
—
—
—
—
—
—
—
Typ.
21.5
21.2
21.0
21
21
25
3.1
3.3
27.0
27.3
43
45
80
82
76
78
57.0
58.0
290
Max.
22.5
22.5
—
—
—
—
—
—
—
Rev. V2
OIP2
dBm
—
—
P
OUT
@ 30 dB MER
5
I
CC6
dBmV/
Channel
mA
55.5
—
—
—
320
5. Modulation Error Ratio, 64 QAM 5.12 MS/s. See ‘Typical Performance Curves’ on page 5 of this datasheet for an example MER vs.
output power relationship.
6. Data corresponds to the typical application circuit and component values shown on page 3 of this datasheet. Parameters shown at
nominal I
CC
= 290 mA unless otherwise noted. I
CC
is the total DC current draw from the V
CC
supply. As shown on page 3, it is distributed to
pins 9 and 12 by balun T2 and pins 10 and 11 directly. Resistor R2 determines the DC voltage of A
BIASA/B
and thereby I
CC
at approximately
0.25 mA/Ω. See page 5 for a typical I
CC
vs. R2 relationship assuming V
CC
= 5 V.
Absolute Maximum Ratings
7,8
Parameter
Input Power
V
CC
Junction Temperature
9,10
Handling Procedures
Please observe the following precautions to avoid
damage:
Absolute Maximum
11 dBm
6V
+150°C
-40°C to +85°C
-65°C to +125°C
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive
to electrostatic discharge (ESD) and can be
damaged by static electricity. Proper ESD control
techniques should be used when handling these
devices.
Operating Temperature
Storage Temperature
2
7. Exceeding any one or a combination of these limits may cause
permanent damage to this device.
8. MACOM does not recommend sustained operation near these
survivability limits.
9. Operating at nominal conditions with T
J
≤ 150°C will ensure
MTTF > 1 x 10
6
hours.
10.Junction Temperature (T
J
) = T
C
+
Өjc
* (V * I)
Typical thermal resistance (Өjc) = 15° C/W.
a) For T
C
= +25°C, T
J
= 47°C @ 5 V, 290 mA
b) For T
C
= +85°C, T
J
= 107°C @ 5 V, 290 mA
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAM-011185
CATV Return Path Differential Amplifier
5 - 300 MHz
Typical Application Circuit: Schematic
Rev. V2
Typical Application Circuit: Component Values
Component
C1 - C9
C10
C11, C13
C12
C14
R1
R2
L1
L2, L3
L4
T1, T2
Value
100 nF
1500 pF
2.0 pF
2.5 pF
1.0 pF
2
Ω
1.33 kΩ
22 nH
3.3 nH
6.2 nH
MABA-007748-CT1160 1:1 Balun (MACOM)
Sample Board Layout
PIN 1
1
T1
1
T2
VCC
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAM-011185
CATV Return Path Differential Amplifier
5 - 300 MHz
Typical Performance Curves: Small-Signal
Gain
30
+25 ºC
-40 ºC
+85 ºC
Rev. V2
Reverse Isolation
0
+25 ºC
-40 ºC
+85 ºC
25
-10
20
S12 (dB)
0
100
200
300
400
S21 (dB)
-20
15
-30
10
-40
Frequency (MHz)
0
100
Frequency (MHz)
200
300
400
Input Return Loss
0
+25 ºC
-40 ºC
+85 ºC
Output Return Loss
0
+25 ºC
-40 ºC
+85 ºC
-10
-10
S11 (dB)
-20
S22 (dB)
0
100
200
300
400
-20
-30
-30
-40
-40
Frequency (MHz)
0
100
Frequency (MHz)
200
300
400
Noise Figure
5
+25 ºC
-40 ºC
+85 ºC
Noise Figure (dB)
4
3
2
1
0
100
200
300
400
Frequency (MHz)
4
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAM-011185
CATV Return Path Differential Amplifier
5 - 300 MHz
Typical Performance Curves: Large Signal
P1dB
29
Rev. V2
OIP2 @ 12 dBm P
OUT
90
28
85
P1dB (dBm)
OIP2 (dBm)
0
50
100
150
200
250
300
27
80
26
75
25
70
Frequency (MHz)
0
50
Frequency (MHz)
100
150
200
250
300
OIP3 @ 12 dBm P
OUT
50
Modulation Error Ratio (64 QAM, 16 Channel)
11
45
45
40
OIP3 (dBm)
MER (dB)
35
Fc
Fc
Fc
Fc
= 56.75 MHz
= 132 MHz
= 159 MHz
= 207 MHz
40
30
35
25
30
0
50
100
150
200
250
300
20
40
45
50
55
60
Frequency (MHz)
Output Power (dBmV/Ch)
Output Power at 30 dB MER vs. I
CC11
59
I
CC
vs. Resistor R2 at V
CC
= 5 V
380
360
Output Power (dBmV/Ch)
58
340
57
Fc = 132 MHz
Fc = 159 MHz
Icc (mA)
340
320
300
280
56
55
260
280
300
320
260
1
1.1
1.2
1.3
1.4
1.5
Icc (mA)
11.F
C
is the center frequency of the measured channel, which is
the 9
th
of 16 consecutive 64-QAM channels.
R2 (kOhm)
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
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