This amplifier provides excellent linearity and high
output power with greater than 30 dB MER for
64 QAM modulation with 39 channels and 52 dBmV
per channel. Gain in the minimum attenuation state
is typically 39 dB. The internal DSA offers 31.5 dB
attenuation range with 0.5 dB steps. This device is
optimized for high output power and low current from
8 V bias but can also be operated from 5 V bias with
flexibility to adjust DC current with external
components. The module provides a power down
function for each of the amplifier stages.
This amplifier is ideally suited for use in CATV
reverse path applications.
Pin Configuration
3
Pin
No.
1
3
4
6
7
8
9
11
12
16
18
19
21
Description
Latch Enable
Attenuator Input (+)
Stage 1 Output (+)
Stage 1 Feedback (+)
Stage 1 Input (+)
Stage 1 Input (-)
Stage 1 Feedback (-)
Stage 1 Output (-)
Attenuator Input (-)
Enable Stage 1
Stage 1 Bias Voltage
Stage 2 Bias Voltage
Enable Stage 2
Attenuator Output (-)
Stage 2 Input (-)
Stage 2 Feedback (-)
Stage 2 Output (-)
Pin
No.
30
32
33
34
36
37
38
39
40
41
42
43
44
45
46
47
48
49
Description
Stage 2 Output (+)
Stage 2 Feedback (+)
Stage 2 Input (+)
Attenuator Output (+)
DSA Serial Output
Power Up Select 2
Power Up Select 1
V
DD
CMOS Controller
Attenuator Bit 5 (16 dB)
Attenuator Bit 4 (8 dB)
Attenuator Bit 3 (4 dB)
Attenuator Bit 2 (2 dB)
Attenuator Bit 1 (1 dB)
Attenuator Bit 0 (0.5 dB)
Parallel/Serial Select
Clock
Serial Input
RF and DC Ground
4
Ordering Information
1,2
Part Number
MAAM-011186-TR1000
MAAM-011186-TR3000
MAAM-011186-001SMB
MAAM-011186-002SMB
Package
1000 piece reel
3000 piece reel
Sample Test Board, 8 V
Sample Test Board, 5 V
25
26
27
29
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
1
3. All pins not listed in the table are “No Connection” and should
be left unconnected.
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.
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-011186
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Parameter
Gain
Gain Slope
Noise Figure
5
Rev. V2
Electrical Specifications: T
A
= +25°C, V
CC
= 8 V, Minimum attenuation state, Z
0
= 75
Ω
Test Conditions
Max. Gain State @ 100 MHz, -29 dBm P
IN
Positive tilt from 5 - 250 MHz
—
—
—
—
100 MHz relative to max. attenuation gain, -29 dBm P
IN
39 Channels (5-250 MHz), 52 dBmV/Ch.
Single Channel (8-200 MHz), 72 dBmV/Ch.
Single Channel (250 MHz), 71 dBmV/Ch.
16 Channels (5-250 MHz), 57 dBmV/Ch.
—
2-tone, 12 dBm/tone, 1 MHz tone spacing, 200 MHz
2-tone, 12 dBm/tone, 1 MHz tone spacing, 200 MHz
50% Control to 90 / 10 % RF
EN1 = EN2 = 5 V
EN1 = EN2 = 0 V
EN1 = EN2 = 5 V
Units
dB
dB
dB
dB
dB
dB
dB
Min.
37.5
—
—
—
—
—
30.0
—
30
—
30
—
—
—
—
—
—
—
Typ.
39.0
1.2
3.0
22
22
50
31.5
36
35
35
34
27
70
42
400
280
3
0.7
Max.
41.0
—
—
—
—
—
33.0
Input Return Loss
Output Return Loss
Reverse Isolation
Attenuation Range
64 QAM MER
6
dB
—
P1dB
OIP2
OIP3
T
ON,
T
OFF
I
CC
I
CC_OFF
I
EN1,
I
EN2
dBm
dBm
dBm
ns
mA
mA
mA
—
—
—
—
315
5
—
5. Includes Balun Loss.
6. Modulation error ratio each channel 64 QAM 5.12 MS/s.
Absolute Maximum Ratings
7,8,9
Parameter
RF Input Power
Voltage
Control Voltage
Junction Temperature
10
Truth Table
11
B5
1
1
1
1
1
1
0
0
B4
1
1
1
1
1
0
1
0
B3
1
1
1
1
0
1
1
0
B2
1
1
1
0
1
1
1
0
B1
1
1
0
1
1
1
1
0
B0
1
0
1
1
1
1
1
0
Attenuation (dB)
Minimum
0.5
1
2
4
8
16
31.5
Absolute Maximum
-8 dBm
10 Volts
-0.5 to +5.5 Volts
+150°C
-40°C to +100°C
-65°C to +150°C
Operating Temperature
Storage Temperature
7. Exceeding any one or combination of these limits may cause
permanent damage to this device.
8. M/A-COM Technology Solutions 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) = 9° C/W.
a) For T
C
= +25°C,
T
J
= 47°C @ 8 V, 315 mA
b) For T
C
= +100°C,
T
J
= 122°C @ 8 V, 315 mA
2
11. Logic “0” = 0.0 V to 0.8 V ± 0.2 V,
Logic “1” = 2.0 V to 5.0 V ± 0.2 V
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-011186
Differential CATV Variable Gain Amplifier
5 - 300 MHz
PCB Layout
Rev. V2
C26
Application Schematic
4
5
3
3
1
C26
2
2
1
5
4
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-011186
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Parts List : 8 V Application circuit
Part
C1, C9, C13, C20,
C21, C22, C23, C24
C2, C4, C5, C6, C7, C8, C11,
C12, C14, C15, C16, C17, C18
C3, C19
C25
C26
L1, L12
L2, L11
L3, L10
L4, L9
L5, L8
L6, L7
L13
R2
12
R4
12
R7, R14
R16, R17
R8
R10, R11
R5, R6
T1, T2
Value
0.1 µF
0.1 µF
47 pF
1 µF
DNI
(Do not install)
47 µH
250 nH
18 nH
8.2 nH
27 nH
30 nH
5.6 nH
3 kΩ
5 kΩ
249
Ω
27
Ω
10 kΩ
100
Ω
DNI
(Do not install)
1:2
Case Style
0402
0402
0402
0805
0402
0806
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
-
Function/Notes
RF Bypass
DC Block
Gain Tilt (with R16 and R17)
Low Frequency Bypass
Input Match
Stage1 V
CC
Choke. Murata LQH2MCN470K02L
Gain Tilt (With R7 & R14). Coilcraft 0402AF-251XJLU
Input Match Stage2 Amp
Output Match Stage1 Amp
Input Match Stage2 Amp
Output Match Stage2 Amp
Input Match
Voltage Divider for V
DD
CMOS
Voltage Divider for V
DD
CMOS
Gain Tilt (with L2 & L11)
Gain Tilt (with C3 & C19)
Set Current for Stage1 Amp. Lower to Reduce Current.
Drop V
CC
1 to 5 V. P
DISS
1/10 W
May be used to increase Stage 2 current for
lower V
CC
applications.
MABA-011029 (MABA-011050 alternate)
13
Rev. V2
12. These components may be omitted if direct connection to 3 - 5 V bias is available for V
DD
_CMOS.
13. If using MABA-011050 balun: L5,L8 = 30 nH, L6,L7= 33 nH, C26 = 1 pF.
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-011186
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Typical Performance Curves: V
CC
= 8 V
Gain
40
Rev. V2
Gain - Wideband
60
40
Max. Gain
B0 = 0
B1 = 0
B2 = 0
B3 = 0
B4 = 5
B6 = 0
Max. Atten.
30
20
S21 (dB)
S21 (dB)
20
Max. Gain
B0 (-0.5 dB)
B1 (-1 dB)
B2 (-2 dB)
B3 (-4 dB)
B4 (-8 dB)
B5 (-16 dB)
Min. Gain (-31.5)
0
-20
-40
10
0
0
100
200
300
400
-60
0
500
1000
1500
2000
2500
3000
Frequency (MHz)
Frequency (MHz)
Input Return Loss
0
Max. Gain
B0 (-0.5 dB)
B1 (-1 dB)
B2 (-2 dB)
B3 (-4 dB)
B4 (-8 dB)
B5 (-16 dB)
Min. Gain (-31.5)
Output Return Loss
0
Max. Gain
B0 (-0.5 dB)
B1 (-1 dB)
B2 (-2 dB)
B3 (-4 dB)
B4 (-8 dB)
B5 (-16 dB)
Min. Gain (-31.5)
-10
-10
S11 (dB)
-20
S22 (dB)
0
100
200
300
400
-20
-30
-30
-40
-40
0
100
200
300
400
Frequency (MHz)
Frequency (MHz)
Reverse Isolation
-30
-40
-50
Max. Gain
B0 (-0.5 dB)
B1 (-1 dB)
B2 (-2 dB)
B3 (-4 dB)
B4 (-8 dB)
B5 (-16 dB)
Min. Gain (-31.5)
Noise Figure
5
4
Noise Figure (dB)
S12 (dB)
3
-60
-70
-80
-90
2
1
+25°C
-40°C
+85°C
0
100
200
300
400
0
0
100
200
300
400
Frequency (MHz)
5
Frequency (MHz)
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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