MAAM-011186
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V2
Features
Functional Schematic
39 dB Gain
31.5 dB, 0.5 dB steps, 6 Bit Digital Step
Attenuator
48
1
CMOS Control
36 dB MER, 64 QAM 39 Channels, 52 dBmV/ch.
8 V or 5 V Operation
3 dB Noise Figure
Serial or Parallel Attenuator Control
Differential Input and Output
Low Harmonics
3
4
34
33
7
8
30
29
Power Down Mode
Lead-Free 7 mm 48-Lead PQFN
Halogen-Free “Green” Mold Compound
RoHS* Compliant
11
12
26
25
Description
Pin Configuration3
The MAAM-011186 is an integrated 2 stage
differential amplifier with embedded digital step
attenuator (DSA) assembled in a lead-free 7 mm
48-lead PQFN package.
Pin
Pin
No.
Description
No.
Description
1
3
Latch Enable
30
32
33
Stage 2 Output (+)
Stage 2 Feedback (+)
Stage 2 Input (+)
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.
Attenuator Input (+)
Stage 1 Output (+)
4
6
Stage 1 Feedback (+) 34
Attenuator Output (+)
DSA Serial Output
Power Up Select 2
Power Up Select 1
VDD CMOS Controller
7
Stage 1 Input (+)
Stage 1 Input (-)
36
37
8
9
Stage 1 Feedback (-) 38
11
12
16
Stage 1 Output (-)
Attenuator Input (-)
Enable Stage 1
39
40 Attenuator Bit 5 (16 dB)
41
Attenuator Bit 4 (8 dB)
Attenuator Bit 3 (4 dB)
Attenuator Bit 2 (2 dB)
Attenuator Bit 1 (1 dB)
This amplifier is ideally suited for use in CATV
reverse path applications.
18 Stage 1 Bias Voltage 42
19 Stage 2 Bias Voltage 43
Ordering Information1,2
21
Enable Stage 2
44
25 Attenuator Output (-) 45 Attenuator Bit 0 (0.5 dB)
Part Number
Package
26
Stage 2 Input (-)
46
Parallel/Serial Select
Clock
MAAM-011186-TR1000
MAAM-011186-TR3000
1000 piece reel
3000 piece reel
27 Stage 2 Feedback (-) 47
29
Stage 2 Output (-)
48
49
Serial Input
RF and DC Ground4
MAAM-011186-001SMB
MAAM-011186-002SMB
Sample Test Board, 8 V
Sample Test Board, 5 V
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.
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.
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.
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