MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Features
Rev. V2
Functional Schematic
40 dB Gain
15.5 dB, 0.5 dB steps, 5 Bit Digital Step
Attenuator
36 dB MER, 64 QAM 39 Channels, 52 dBmV/ch.
8 V Operation
2.6 dB Noise Figure
Serial or Parallel Attenuator Control
Differential Input and Output
Low Harmonics
Power Down Mode
Lead-Free 7 mm 48-lead PQFN Package
Halogen-Free “Green” Mold Compound
RoHS* Compliant
48
1
37
34
33
7
30
8
29
26
12
25
13 14
Description
The MAAM-011168 is an integrated 2 stage
differential amplifier with embedded digital step
attenuator (DSA) assembled in a lead-free 7 mm
48-lead PQFN package.
The module 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 40 dB. The internal DSA offers 15.5 dB
attenuation range with 0.5 dB steps. The device is
optimized for high output power with 8 V bias and
can also operate from 5 V bias if lower DC power
consumption and output level is desired. The
module also provides a power down function for
each of the amplifier stages.
This amplifier is ideally suited for use in CATV
reverse path applications.
Ordering Information1,2
36
CMOS Control
17 18
24
Pin Configuration3
Pin
No.
Description
Pin
No.
Description
1
Latch Enable
30
Stage 2 Output (+)
6
Stage1 Feedback (+)
32
Stage 2 Feedback(+)
7
Stage 1 input (+)
33
Stage 2 Input (+)
8
Stage 1 input (-)
34
Attenuator Output (+)
9
Stage 1 Feedback(-)
36
DSA Serial Output
13
Stage 1 Output (+)
37
Power Up Select 2
14
Stage 1 Output (-)
38
Power Up Select 1
15
Enable Stage 1
39
VDD CMOS Controller
16
Stage 1 Bias Voltage
40
Unused Control (B5)5
17
Attenuator Input (-)
41
Attenuator Bit 4 (8 dB)
18
Attenuator Input (+)
42
Attenuator Bit 3 (4 dB)
20
Stage 2 Bias Voltage
43
Attenuator Bit 2 (2 dB)
21
Enable Stage 2
44
Attenuator Bit 1 (1 dB)
25
Attenuator Output (-)
Part Number
Package
26
Stage 2 Input (-)
46
Parallel/Serial Select
MAAM-011168-TR1000
1000 piece reel
27
Stage 2 Feedback(-)
47
Clock
MAAM-011168-TR3000
3000 piece reel
29
Stage 2 Output (-)
48
Serial Input
MAAM-011168-001SMB
Sample Test Board
49
RF and DC Ground4
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
* Restrictions on Hazardous Substances, European Union
Directive 2011/65/EU.
45 Attenuator Bit 0 (0.5 dB)
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.
5. MACOM recommends grounding pin 40. It is connected to the
CMOS controller but does not affect attenuator setting.
1
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Electrical Specifications: TA = +25°C, VCC = 8 V, minimum attenuation state, Z0 = 75 Ω
Parameter
Test Conditions
Units
Min.
Typ.
Max.
Gain
Max. Gain State @ 100 MHz, -29 dBm PIN
dB
38
40
42
Gain Slope
Positive tilt from 5 - 200 MHz
dB
—
1.0
—
Noise Figure6
—
dB
—
2.6
—
Input Return Loss
—
dB
—
22
—
Output Return Loss
—
dB
—
22
—
Reverse Isolation
—
dB
—
50
—
Attenuation Range
100 MHz, Relative to maximum gain, -29 dBm PIN
dB
14.6
15.5
16.4
64 QAM
Modulated Error Ratio7
39 Channels (5 - 250 MHz), 51 dBmV/Ch.
Single Channel (8 - 200 MHz), 71 dBmV/Ch.
Single Channel (250 MHz), 70 dBmV/Ch.
16 Channels (5 - 250 MHz), 56 dBmV/Ch.
dB
—
—
—
30
36
35
35
34
—
P1dB
—
dBm
—
27
—
OIP2
2-tone,+9 dBm/tone, 1 MHz tone spacing, 200 MHz
dBm
—
74
—
OIP3
2-tone,+9 dBm/tone, 1 MHz tone spacing, 200 MHz
dBm
—
44
—
TON, TOFF
50% Control to 90 / 10 % RF
ns
—
400
—
ICC
EN1 = EN2 = 5 V
mA
—
290
315
ICC_OFF
EN1 = EN2 = 0 V
mA
—
3
10
IEN1, IEN2
EN1 = EN2 = 5 V
mA
—
0.7
—
6. Includes Balun loss
7. Modulation error ratio each channel 64 QAM 5.12 MS/s
2
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Visit www.macom.com for additional data sheets and product information.
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Absolute Maximum Ratings8,9,10
Rev. V2
Truth Table12
Parameter
Absolute Maximum
B5
B4
B3
B2
B1
B0
Attenuation (dB)
RF Input Power
-8 dBm
X
1
1
1
1
1
Minimum
Bias Voltage (VCC)
10 V
X
1
1
1
1
0
0.5
Control Voltage
-0.5 V to 5.5 V
X
1
1
1
0
1
1
Operating Temperature
-40°C to +100°C
X
1
1
0
1
1
2
Junction Temperature11
+150°C
X
1
0
1
1
1
4
Storage Temperature
-65°C to +150°C
X
0
1
1
1
1
8
X
0
0
0
0
0
15.5
8. Exceeding any one or combination of these limits may cause
permanent damage to this device.
9. MACOM does not recommend sustained operation near
these survivability limits.
10. Operating at nominal conditions with TJ ≤ 150°C will ensure
MTTF > 1 x 106 hours.
11. Junction Temperature (TJ) = TC + Өjc * (V * I)
Typical thermal resistance (Өjc) = 8.85° CW.
a) For TC = +25°C,
TJ = 47°C @ 8 V, 315 mA
b) For TC = +100°C,
TJ = 122°C @ 8 V, 315 mA
12. Logic “0” = 0 V to 0.8 V ± 0.2 V,
Logic “1” = 2 V to 5 V ± 0.2 V.
3
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
PCB Layout
Application Schematic
B5
5
4
3
2
1
2
4
3
1
5
4
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Parts List : 8 V Application circuit
Part
Value
Case Style
Function/Notes
C1, C9, C20, C21, C22, C23, C24, C29
0.1 µF
0402
RF Bypass
C2, C4, C5, C7, C8, C11, C12, C13, C14
C15, C17, C18, C27, C28
0.1 µF
0402
DC Block
C3, C19
150 pF
0402
Gain Tilt (with R16 and R17)
C25
1 µF
0805
Low Frequency Bypass
C26
1 pF
0402
Output Match
L1, L12
47 µH
0806
VCC1 Choke. Murata LQH2MCN470K02L
L2, L11
250 nH
0402
Gain Tilt (with R7 & R14). Coilcraft 0402AF-251XJLU
L3, L10
22 nH
0402
Input Match Stage2 Amp
L4, L9
22 nH
0402
Output Match Stage1 Amp
L5, L8
27 nH
0402
Input Match Stage1 Amp
L6, L7
33 nH
0402
Output Match Stage2 Amp
R1
0Ω
0402
Input Match
R18
30 Ω
0402
Increase value can reduce stage 2 current
R2
3 kΩ
0402
Voltage divider to set VDD_CMOS13
R4
5 kΩ
0402
Voltage divider to set VDD_CMOS13
R7, R14
249 Ω
0402
Gain Tilt (with L2, L11)
R16, R17
22 Ω
0402
Gain Tilt (with C3, C19)
R8
10 kΩ
0402
Increase value can reduce stage 1 current.
R10, R11, R21, R22
50 Ω
0402
Drop VCC1 to 5 V. Pdiss 1/20 W. 0 Ω for 5 V VCC
R5, R6, R19, R20
150 Ω
0402 or
0603
Additional feedback resistors for Stage1 & Stage2.
May be used to adjust gain or implement temperature
compensation if replaced with thermistors.
T1, T2
1:2
MABA-011050
13. These components may be omitted if 5 V supply is available for VDD_CMOS.
5
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Typical Performance Curves:
Gain
Gain - Wideband
Input Return Loss
Output Return Loss
Reverse Isolation
Noise Figure
6
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Typical Performance Curves:
Gain
OIP3, OIP2
Modulation Error Ratio (64 QAM, single channel)
Modulation Error Ratio (64 QAM, 16 channel)
Modulation Error Ratio (64 QAM, 32 channel)
POUT @ 30 dB Modulation Error Ratio
75
50
45
70
40
65
35
FC =
FC =
FC =
FC =
FC =
FC =
30
25
20
30
35
60
14 MHz
32 MHz
56 MHz
104 MHz
146 MHz
194 MHz
40
55
45
50
Output Power (dBmV)
55
60
50
0
8
16
24
32
Number of 64 QAM Channels
7
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Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
40
MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Lead-Free 7 mm 48-lead PQFN
†
Reference Application Note S2083 for lead-free solder reflow recommendations.
Meets JEDEC moisture sensitivity level 3 requirements.
Plating is NiPdAuAg.
Recommended Land Pattern
0.508 mm
0.254 mm
0.2 mm
Handling Procedures
0.3 mm
0.8 mm
0.305 mm
0.432 mm
0.864 mm
7.8 mm
0.864 mm
Please observe the following precautions to avoid
damage:
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
HBM Class 1B devices.
5.8 mm
0.2 mm
Copper plating (board and vias) should be ≥ 0.05 mm thick.
8
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Applications Section
First Stage Bypass Application
If a lower gain VGA solution is desired the MAAM-011168 may be implemented with the first stage bypassed.
Typical Performance and Application Details for implementing the First Stage Bypass Application are presented
below.
Typical Performance: TA = +25°C, VCC = 8 V, minimum attenuation state, Z0 = 75 Ω
Parameter
Test Conditions
Units
Typical
Gain
Max. Gain State @ 100 MHz, -29 dBm PIN
dB
19
Gain Slope
Positive tilt from 5 - 250 MHz
dB
0
Input Return Loss
—
dB
22
Output Return Loss
—
dB
22
Noise Figure
—
dB
4.3
Attenuation Range
100 MHz, Relative to maximum gain, -29 dBm PIN
dB
15.5
64 QAM MER7
39 Channels (5 - 250 MHz), 51 dBmV/Ch.
Single Channel (8 - 200 MHz), 71 dBmV/Ch.
Single Channel (250 MHz), 70 dBmV/Ch.
16 Channels (5 - 250 MHz), 56 dBmV/Ch.
dB
36
35
35
34
P1dB
—
dBm
27
OIP2
2-tone,12 dBm/tone, 1 MHz tone spacing, 200 MHz
dBm
76
OIP3
2-tone,12 dBm/tone, 1 MHz tone spacing, 200 MHz
dBm
46
ICC
EN1 = EN2 = 5 V
mA
225
9
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
PCB Layout: First Stage Bypass
Application Schematic: First Stage Bypass
3
1
4
5
2
4
1
2
5
3
10
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Visit www.macom.com for additional data sheets and product information.
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Parts List : First Stage Bypass
Part
Value
Case Style
Function/Notes
C9, C13, C21, C22, C23, C28
0.1 µF
0402
RF Bypass
C2, C4, C5, C15, C17, C18
0.1 µF
0402
DC Block
C14
470 pF
0402
Gain Flatness
C25
1 µF
0805
Low Frequency Bypass
C27, C29
1pF
0402
Input, Output Matching
C26
270 pF
0402
Gain Flatness
C7
DNI
-
Matching if needed
L3, L10
18 nH
0402
Input Match Stage2 Amp
L4, L9
22 nH
0402
Input Match DSA
L6, L7
24 nH
0402
Output Match Stage2 Amp
L11, L12
120 nH
0402
Gain Flatness
R18
30 Ω
0402
Increase value can reduce stage 2 current
R19, R20
6.8 Ω
0402
Gain Flatness
R2
3 kΩ
0402
Voltage divider to set VDD_CMOS13
R4
5 kΩ
0402
Voltage divider to set VDD_CMOS13
R16, R17
100 Ω
0402
Gain Flatness
R5, R6
150 Ω
T1, T2
1:2
Additional feedback resistors for Stage1 & Stage2. May be
0402 or 0603 used to adjust gain or implement temperature compensation if replaced with thermistors.
MABA-011050
11
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Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Typical Performance Curves: First Stage Bypass Application
Gain
Noise Figure
Input Return Loss
Output Return Loss
OIP3, OIP2
MER vs Pout - 16 Channels
12
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Functionality
Modes of Operation: Serial, Direct Parallel, and Latched Parallel
Mode Truth Table
P/S
LE
Mode
1
X
Serial
0
Constant High
Direct Parallel
0
Pulsed
Latched Parallel
Serial Mode
The serial control interface (SERIN, CLK, LE, SEROUT) is compatible with the SPI protocol. SPI mode is
activated when P/S is kept high. The 6-bit serial word must be loaded with MSB first. After shifting in the 6 bit
word, bringing LE high will set the attenuator to the desired state. While LE is high the CLK is masked to protect
the data while implementing the change . SEROUT is the SERIN delayed by 6 clock cycles.
When P/S is low, the serial control interface is disabled and the serial input register is loaded asynchronously with
parallel digital inputs.
Direct Parallel Mode
The parallel mode is enabled when P/S is set to low. In the direct parallel mode, the attenuator is controlled by the
parallel control inputs directly. The LE must be at logic high to control the attenuator in this mode.
Latched Parallel Mode
In the latched parallel mode, the parallel control inputs will be buffered by registers, and loaded to the outputs
when LE is high. The outputs shall not change states when LE is low.
Power-up States
The power-up (PUP) states will work in both serial and parallel modes, and initiate the attenuator according to the
PUP truth table. During power up, the digital inputs shall be held constant for at least 1 μs after VCC reaches 90%
of final value. For serial mode, the PUP states will only work when LE is held low. The PUP state shall be locked
out after the first LE pulse. Proper operation of power up states requires fast rise time (<200 ns) for VDD-CMOS.
13
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Functionality
Modes of Operation: Serial, Direct Parallel, and Latched Parallel
PUP Truth Table
Inputs
Gain Relative to Max. Gain
PS
LE
PUP2
PUP1
0
0
0
0
-15.5 dB
0
0
0
1
-8 dB
0
0
1
0
0 dB
0
0
1
1
0 dB
0
1
X
X
0 to –15.5 dB (Set B0 - B4)
1
0
X
X
0 to –15.5 dB (Set B0 - B4)
1
1
X
X
No Definition
Notes
Parallel Mode
Serial Mode
Serial Interface Timing Characteristics
Symbol
Parameter
tSCK
Typical Performance
Units
-40°C
+25°C
+85°C
Min. Serial Clock Period
100
100
100
ns
tCS
Min. Control Set-up Time
20
20
20
ns
tCH
Min. Control Hold Time
20
20
20
ns
tLS
Min. LE Set-up Time
10
10
10
ns
tLEW
Min. LE Pulse Width
10
10
10
ns
tLH
Min. Serial Clock Hold Time from LE
10
10
10
ns
tLES
Min. LE Pulse Spacing
630
630
630
ns
14
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Functionality
Modes of Operation: Serial, Direct Parallel, and Latched Parallel
Serial Input Interface Timing Diagram
tLS
tLEW
tLH
SERIAL
CLK
LE
tLES
CONTROL
WORD
D5
MSB
D4
tCS
D0
LSB
D1
tCH
Parallel Control Word
tLEW
LE
tLS
tLH
30ns Minimum
15
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MAAM-011168
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
M/A-COM Technology Solutions Inc. All rights reserved.
Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")
products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
to any intellectual property rights is granted by this document.
THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, RELATING TO SALE AND/OR USE OF MACOM PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR
INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR
OTHER INTELLECTUAL PROPERTY RIGHT. MACOM FURTHER DOES NOT WARRANT THE ACCURACY
OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN
THESE MATERIALS. MACOM SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS,
WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM
customers using or selling MACOM products for use in such applications do so at their own risk and agree to
fully indemnify MACOM for any damages resulting from such improper use or sale.
16
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