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.
Pin Configuration
3
Pin
No.
1
3
4
6
7
8
9
11
12
16
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-011122-TR1000
MAAM-011122-TR3000
MAAM-011122-001SMB
Package
1000 piece reel
3000 piece reel
Sample Test Board
18
19
21
25
26
27
29
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
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
Electrical Specifications:
T
A
= 25°C, V
CC
= +8 Volts, Minimum attenuation state, Z
0
= 75
Ω
Parameter
Gain
Gain Slope
Noise Figure
5
Input Return Loss
Output Return Loss
Reverse Isolation
Attenuation Range
64 QAM MER
6
P1dB
OIP2
OIP3
T
ON,
T
OFF
I
CC
I
CC_OFF
Test Conditions
Max. Gain State @ 100 MHz, -29 dBm Pin
Positive tilt from 5 - 250 MHz
—
—
—
—
100 MHz relative to max. attenuation gain, -29 dBm Pin
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.
—
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
Units
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
ns
mA
mA
—
—
Min.
—
—
—
—
—
—
30
—
30
30
30
—
—
—
Typ.
39
1.2
3.0
22
22
50
31.5
36
35
35
34
27
70
42
400
280
3
315
10
Max.
—
—
—
—
—
—
33
—
—
—
—
Rev. V1
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
Operating Temperature
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
-40°C to +100°C
+150°C
-65°C to +150°C
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) = 8.85° C/W.
a) For T
C
= 25°C,
T
J
= 44°C @ +8 V, 275 mA
b) For T
C
= 100°C,
T
J
= 119°C @ +8 V, 275 mA
2
11. Logic “0” = 0 V to +0.8 V ± 0.2 V,
Logic “1” = +2 V to +5 V ± 0.2 V
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
PCB Layout
12
Rev. V1
12. 136 vias underneath the IC of 0.241 mm in diameter.
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
Rev. V1
Lead-Free
7 mm 48-lead PQFN
†
Reference Application Note S2083 for lead-free solder reflow recommendations.
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
Typical Performance Curves:
Gain
40
Rev. V1
Gain - Wideband
80
Max. Gain
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
30
40
20
Max. Gain
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
0
10
-40
0
0
100
200
300
400
-80
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (MHz)
Frequency (GHz)
Input Return Loss
0
Max. Gain
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
Output Return Loss
0
Max. Gain
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
-10
-10
-20
-20
-30
-30
-40
0
100
200
300
400
-40
0
100
200
300
400
Frequency (MHz)
Frequency (MHz)
Reverse Isolation
-20
Max. Gain
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
Noise Figure
5
-40
4
3
-60
2
-80
+25°C
-40°C
+85°C
1
-100
0
100
200
300
400
0
0
100
200
300
400
Frequency (MHz)
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.
1. Introduction
Electronic scales are gradually replacing traditional measuring tools like springs and balances in everyday life, such as electronic price computing scales and electronic weigh...[详细]
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