CMD173
DC-20 GHz Distributed Amplifier
Features
Functional Block Diagram
► Ultra wideband performance
► Low noise figure
► Low current consumption
► Small die size
Vgg2
ACG1
2
3
Description
The CMD173 is wideband GaAs MMIC distributed amplifier die which operates from DC
to 20 GHz. The amplifier delivers greater than
15 dB of gain with a corresponding output 1
dB compression point of +18 dBm and noise
figure of 2 dB at 10 GHz. The CMD173 is a 50
ohm matched design which eliminates the need
for RF port matching. The CMD173 offers full
passivation for increased reliability and moisture protection. This amplifier is the perfect
alternative to higher cost hybrid amplifiers.
RFOUT & Vdd
4
RFIN
1
7
6
5
GB
Vgg
ACG2
Note: Vgg2 is optional for gain control
Electrical Performance - Vdd = 8.0 V, Vgg = 3.0 V, TA = 25 oC, F=10 GHz
Parameter
Min
Frequency Range
Typ
Max
Units
DC - 20
GHz
Gain
15
dB
Noise Figure
2
dB
Input Return Loss
13
dB
Output Return Loss
14
dB
Output P1dB
18
dBm
Supply Current
78
mA
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Specifications
Absolute Maximum Ratings
Parameter
Recommended Operating Conditions
Rating
Parameter
Min
Typ
Max
Units
5.0
8.0
10.0
V
Drain Voltage, Vdd
10.0
Vdd
Gate Voltage, Vgg
4.0
Idd
+20 dBm
Vgg
RF Input Power
Channel Temperature, Tch
150 °C
Power Dissipation, Pdiss
904 mW
Thermal Resistance
72 °C/W
78
0
mA
3.0
4.0
V
Electrical performance is measured at specific
test conditions. Electrical specifications are not
guaranteed over all recommended operating conditions.
Operating Temperature
-55 to 85 °C
Storage Temperature
-55 to 150 °C
Operation of this device outside the maximum
ratings may cause permanent damage.
Electrical Specifications, Vdd = 8.0 V, Vgg = 3.0 V, TA = 25 oC
Parameter
Min
Frequency Range
Gain
Typ
Max
Min
DC - 10
13
15
13
Typ
Max
Units
10 - 20
GHz
15.5
dB
Noise Figure
1.7
2.6
dB
Input Return Loss
15
10
dB
Output Return Loss
18
17
dB
17
dBm
25
dBm
Output P1dB
16
Output IP3
18
14
28
Supply Current
55
78
100
55
78
100
mA
Gain Temperature
Coefficient
0.01
0.01
dB/°C
Noise Figure Temperature
Coefficient
0.01
0.01
dB/°C
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Typical Performance
Broadband Performance, Vdd = 8.0 V, Vgg = 3.0 V, Idd = 78 mA, TA = 25 oC
20
6.75
15
6
10
5.25
S11
S22
S21
NF
4.5
0
3.75
-5
3
-10
2.25
-15
1.5
-20
0.75
-25
Noise Figure/dB
Response/dB
5
0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Frequency/GHz
Narrow-band Performance, Vdd = 8.0 V, Vgg = 3.0 V, Idd = 78 mA, TA = 25 oC
20
6.75
15
6
10
5.25
Response/dB
0
-5
4.5
3.75
3
-10
2.25
-15
1.5
-20
0.75
-25
Noise Figure/dB
S11
S22
S21
NF
5
0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
Frequency/GHz
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Typical Performance
Gain vs. Temperature, Vdd = 8.0 V, Vgg = 3.0 V
20
19
18
17
16
15
14
13
+25C
+85C
Gain/dB
12
11
-55C
10
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Frequency/GHz
Noise Figure vs. Temperature, Vdd = 8.0 V, Vgg = 3.0 V
5
+25C
+85C
-55C
4.5
4
Noise Figure/dB
3.5
3
2.5
2
1.5
1
0.5
0
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Frequency/GHz
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Typical Performance
Output Power, Vdd = 8.0 V, Vgg = 3.0 V, TA = 25 oC
25
24
P1dB
23
Psat
22
21
20
19
Response/dBm
18
17
16
15
14
13
12
11
10
9
8
7
6
5
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Frequency/GHz
P1dB vs. Temperature, Vdd = 8.0 V, Vgg = 3.0 V, TA = 25 oC
20
19
18
17
16
15
13
+25C
+85C
12
-55C
P1dB/dBm
14
11
10
9
8
7
6
5
4
3
2
1
0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Frequency/GHz
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Typical Performance
Output IP3 vs. Temperature, Vdd = 8.0 V, Vgg = 3.0 V, TA = 25 oC
35
+25C
+85C
-55C
30
Output IP3/dBm
25
20
15
10
5
0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Frequency/GHz
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Mechanical Information
Die Outline (all dimensions in microns)
275.0
125.0
2
3
4
2300.0
1929.0
1
1321.0
880.5
7
6
5
679.5
829.5
1279.5
2300.0
Notes:
1. No connection required for unlabeled pads
2. Backside is RF and DC ground
3. Backside and bond pad metal: Gold
4. Die is 85 microns thick
5. DC bond pads are 100 microns square
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Pad Description
Pad Diagram
2
3
4
1
7
6
5
Functional Description
Pad
Function
Description
1
RF in
50 ohm matched input
2
Vgg2
Optional supply voltage for gain control
Decoupling and bypass caps required
3
ACG1
Low frequency termination. Attach bypass
capacitor per application circuit
4
RF out &
Vdd
Power supply voltage and 50 ohm matched
output
5
ACG2
Low frequency termination. Attach bypass
capacitor per application circuit
6
Vgg
Power supply voltage
Decoupling and bypass caps required
7
GB
Connect to DC ground
Schematic
RF in
Vgg2
ACG1
RF in
ACG2
RF out & Vdd
Vgg
GB
GND
Backside
Ground
Connect to RF / DC ground
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Applications Information
Assembly Guidelines
The backside of the CMD173 is RF ground. Die attach should be accomplished with electrically and
thermally conductive epoxy only. Eutectic attach is not recommended. Standard assembly procedures
should be followed for high frequency devices. The top surface of the semiconductor should be made
planar to the adjacent RF transmission lines, and the RF decoupling capacitors placed in close proximity
to the DC connections on chip.
RF connections should be made as short as possible to reduce the inductive effect of the bond wire. Use
of a 0.8 mil thermosonic wedge bonding is highly recommended as the loop height will be minimized.
The RF input and output require a double bond wire as shown.
The semiconductor is 85 um thick and should be handled by the sides of the die or with a custom collet.
Do not make contact directly with the die surface as this will damage the monolithic circuitry. Handle
with care.
Assembly Diagram
0.1 uF CAP TO GROUND
(example: Presidio part
MVB4080X104ZGK5R3L)
to Vdd
RF out
RF in
100 pF BYPASS CAP
(example: Presidio part
LSA1515B101M2H5R-L)
0.1 uF BYPASS CAP
0.1 uF CAP TO GROUND
to Vgg
GaAs MMIC devices are susceptible to damage from Electrostatic Discharge. Proper precautions
should be observed during handling, assembly and test.
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com
CMD173
DC-20 GHz Distributed Amplifier
Applications Information
Application Circuit
0.1 uF
2
Vdd
3
RF in
4
1
RF out
5
6
0.1 uF
7
Vgg
100 pF
0.1 uF
Note: Drain voltage (Vdd) must be applied through a broadband bias tee or external bias network.
Biasing and Operation
The CMD173 is biased with a positive drain supply and positive gate supply. Performance is optimized
when the drain voltage is set to +8.0 V. The recommended gate voltage is +3.0 V.
Turn ON procedure:
1.Apply drain voltage Vdd and set to +8 V
2.Apply gate voltage Vgg and set to +3 V
Turn OFF procedure:
1.Turn off gate voltage Vgg
2.Turn off drain voltage Vdd
RF power can be applied at any time.
ver 2.2 0516
Custom MMIC
300 Apollo Drive Chelmsford, MA 01824 Phone (978) 467-4290 Fax (978) 467-4294
Visit us online at www.custommmic.com