MAAM-011122

MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
Functional Schematic
Features
 39 dB Gain
 31.5 dB, 0.5 dB steps, 6 Bit Digital Step
Attenuator
 36 dB MER, 64 QAM 39 Channels, 52 dBmV/ch.
 8 V, 280 mA
 3 dB Noise Figure
 Serial or Parallel Attenuator Control
 Differential Input and Output
 Low Harmonics
 Power Down Mode
 Lead-Free 7 mm PQFN-48LD
 Halogen-Free “Green” Mold Compound
 RoHS* Compliant and 260°C Reflow Compatible
Description
The MAAM-011122 is an integrated 2 stage
differential amplifier with embedded digital step
attenuator (DSA). This part is intended for CATV
Reverse Path applications. 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 39 dB. The
internal DSA offers 31.5 dB attenuation range with
0.5 dB steps. The module also provides power down
function for each of the amplifier stages.
The part is packaged in a lead-free 7 mm PQFN
package.
Ordering Information
1,2
Part Number
Package
MAAM-011122-TR1000
1000 piece reel
MAAM-011122-TR3000
3000 piece reel
MAAM-011122-001SMB
Sample Test Board
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
Pin Configuration3
Pin
No.
Description
Pin
No.
Description
1
Latch Enable
30
Stage 2 Output (+)
3
Attenuator Input (+)
32
Stage 2 Feedback(+)
4
Stage 1 Output (+)
33
Stage 2 Input (+)
6
Stage 1 Feedback(+)
34
Attenuator Output (+)
7
Stage 1 Input (+)
36
DSA Serial Output
8
Stage 1 Input (-)
37
Power Up Select 2
9
Stage 1 Feedback(-)
38
Power Up Select 1
11
Stage 1 Output (-)
39
VDD CMOS Controller
12
Attenuator Input (-)
40
Attenuator Bit 5 (16 dB)
16
Enable Stage 1
41
Attenuator Bit 4 (8 dB)
18
Stage 1 Bias Voltage
42
Attenuator Bit 3 (4 dB)
19
Stage 2 Bias Voltage
43
Attenuator Bit 2 (2 dB)
21
Enable Stage 2
44
Attenuator Bit 1 (1 dB)
25
Attenuator Output (-)
45
Attenuator Bit 0 (0.5 dB)
26
Stage 2 Input (-)
46
Parallel/Serial Select
27
Stage 2 Feedback(-)
47
Clock
29
Stage 2 Output (-)
48
Serial Input
49
RF and DC Ground4
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 2002/95/EC.
1
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
Electrical Specifications:
TA = 25°C, VCC = +8 Volts, Minimum attenuation state, Z0 = 75 Ω
Parameter
Test Conditions
Units
Min.
Typ.
Max.
Gain
Max. Gain State @ 100 MHz, -29 dBm Pin
dB
—
39
—
Positive tilt from 5 - 250 MHz
dB
—
1.2
—
—
dB
—
3.0
—
—
dB
—
22
—
Gain Slope
Noise Figure
5
Input Return Loss
Output Return Loss
—
dB
—
22
—
Reverse Isolation
—
dB
—
50
—
Attenuation Range
100 MHz relative to max. attenuation gain, -29 dBm Pin
dB
30
31.5
33
64 QAM MER
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 (5-200 MHz), 57 dBmV/Ch.
dB
—
30
30
30
36
35
35
34
—
P1dB
—
dBm
—
27
—
OIP2
2-tone,12 dBm/tone, 1 MHz tone spacing, 200 MHz
dBm
—
70
—
—
42
—
6
OIP3
2-tone,12 dBm/tone, 1 MHz tone spacing, 200 MHz
dBm
TON, TOFF
50% Control to 90 / 10 % RF
ns
ICC
EN1 = EN2 = 5 V
mA
—
280
315
ICC_OFF
EN1 = EN2 = 0 V
mA
—
3
10
400
5. Includes Balun Loss
6. Modulation error ratio each channel 64 QAM 5.12 MS/s
Absolute Maximum Ratings7,8,9
Truth Table11
Parameter
Absolute Maximum
B5
B4
B3
B2
B1
B0
Attenuation (dB)
RF Input Power
-8 dBm
1
1
1
1
1
1
Minimum
Voltage
10 volts
1
1
1
1
1
0
0.5
Operating Temperature
-40°C to +100°C
1
1
1
1
0
1
1
Junction Temperature10
+150°C
1
1
1
0
1
1
2
Storage Temperature
-65°C to +150°C
1
1
0
1
1
1
4
1
0
1
1
1
1
8
0
1
1
1
1
1
16
0
0
0
0
0
0
31.5
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 TJ ≤ 150°C will ensure
MTTF > 1 x 106 hours.
10. Junction Temperature (TJ) = TC + Өjc * (V * I)
Typical thermal resistance (Өjc) = 8.85° C/W.
a) For TC = 25°C,
TJ = 44°C @ +8 V, 275 mA
b) For TC = 100°C,
TJ = 119°C @ +8 V, 275 mA
11. Logic “0” = 0 V to +0.8 V ± 0.2 V,
Logic “1” = +2 V to +5 V ± 0.2 V
2
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
PCB Layout12
12. 136 vias underneath the IC of 0.241 mm in diameter.
Parts List13
Part
Value
Case Style
C1, C9, C13, C20, C21, C22, C23, C24
0.1 µF
0402
C2, C4, C5, C6, C7, C8, C11, C12, C15, C16, C17, C18
0.01 µF
0402
C3, C19
47 pF
0402
C14
2200 pF
0402
C25
1 µF
0805
L1, L12
14
47 µH
0806
L2, L11
15
250 nH
0402
L3, L10
18 nH
0402
L4, L9
10 nH
0402
L5, L8
27 nH
0402
L6, L7
30 nH
0402
L13
5.6 nH
0402
R1, R10, R11
0Ω
0402
R2
3 kΩ
0402
R4
5 kΩ
0402
R7, R14
249 Ω
0402
R16, R17
27 Ω
0402
13. The baluns are M/A-COM Technology Solutions parts, T1 is MABA-007681-CT2010 and T2 is MABA-011029.
14. 47 µH inductor is Murata LQH2MCN470K02L.
15. 250 nH inductor is Coilcraft 0402AF-251XJLU.
3
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Application Schematic
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.
4
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Rev. V1
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
Typical Performance Curves:
Gain
Gain - Wideband
40
80
30
40
20
0
100
200
4 dB
8 dB
16 dB
31.5 dB
300
-40
400
-80
0.0
0.5
1.0
Frequency (MHz)
1.5
2.0
2.5
3.0
Frequency (GHz)
Output Return Loss
Input Return Loss
0
0
Max. Gain
0.5 dB
1 dB
2 dB
-10
4 dB
8 dB
16 dB
31.5 dB
-20
-30
-30
0
100
200
300
Max. Gain
0.5 dB
1 dB
2 dB
-10
-20
-40
4 dB
8 dB
16 dB
31.5 dB
0
Max. Gain
0.5 dB
1 dB
2 dB
10
0
Max. Gain
0.5 dB
1 dB
2 dB
400
-40
0
100
Frequency (MHz)
200
4 dB
8 dB
16 dB
31.5 dB
300
400
300
400
Frequency (MHz)
Reverse Isolation
Noise Figure
-20
5
Max. Gain
0.5 dB
1 dB
2 dB
-40
4 dB
8 dB
16 dB
31.5 dB
4
3
-60
2
-80
-100
+25°C
-40°C
+85°C
1
0
100
200
300
Frequency (MHz)
400
0
0
100
200
Frequency (MHz)
5
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
Typical Performance Curves:
Gain
POUT @ 30 dB MER
75
45
70
40
65
35
60
+25°C
-40°C
+85°C
30
25
0
100
200
55
300
400
50
0
8
Frequency (MHz)
60
60
50
50
40
40
FC =
FC =
FC =
FC =
20
40
45
8 MHz
100 MHz
200 MHz
250 MHz
50
55
60
65
70
75
20
25
30
35
45
45
40
40
35
35
30
35
14 MHz
32 MHz
56 MHz
104 MHz
146 MHz
194 MHz
40
FC =
FC =
FC =
FC =
FC =
FC =
FC =
30
25
45
50
Output Power (dBmV)
45
50
60
55
60
20
30
35
14 MHz
32 MHz
56 MHz
104 MHz
146 MHz
194 MHz
237 MHz
40
45
50
Output Power (dBmV)
6
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
55
Modulation Error Ratio (64 QAM, 40 channel)
50
20
40
Output Power (dBmV)
50
25
40
30
Modulation Error Ratio (64 QAM, 32 channel)
FC =
FC =
FC =
FC =
FC =
FC =
32
FC = 56 MHz
FC = 159 MHz
FC = 207 MHz
Output Power (dBmV)
30
24
Modulation Error Ratio (64 QAM, 16 channel)
Modulation Error Ratio (64 QAM, single channel)
30
16
Number of 64 QAM Channels
55
60
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
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.
7
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
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
-31.5 dB
0
0
0
1
-24 dB
0
0
1
0
-16 dB
0
0
1
1
0 dB
0
1
X
X
0 to –31.5 dB (Set B0 - B5)
1
0
X
X
0 to –31.5 dB (Set B0 - B5)
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
8
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
MAAM-011122
Differential CATV Variable Gain Amplifier
5 - 300 MHz
Rev. V1
Functionality
Modes of Operation: Serial, Direct Parallel, and Latched Parallel
Serial Input Interface Timing Diagram
Parallel Control Word
tLEW
LE
tLS
tLH
30ns Minimum
9
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macomtech.com for additional data sheets and product information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298