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HMC997LC4
v02.0514
Variable Gain Amplifier - SMT
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Typical Applications
Features
The HMC997LC4 is ideal for:
Wide Gain Control Range: 15 dB
• Point-to-Point Radio
Single Control Voltage
• Point-to-Multi-Point Radio
Output IP3 @ Max Gain: +31 dBm
• EW & ECM Subsystems
Output P1dB: +24 dBm
No External Matching
• Ka-Band Radar
24 Lead 4 x 4 mm SMT Package: 16 mm2
• Test Equipment
General Description
Functional Diagram
The HMC997LC4 is a GaAs MMIC PHEMT analog
variable gain amplifier and/or driver amplifier which
operates between 17 and 27 GHz. Ideal for microwave
radio applications, the amplifier provides up to 20.5
dB of gain, output P1dB of up to +24 dBm, and up to
+31 dBm of output IP3 at maximum gain, while
requiring only 170 mA from a +5V supply. A gain
control voltage (Vctrl) is provided to allow variable
gain control up to 15 dB. Gain flatness is excellent
making the HMC997LC4 ideal for EW, ECM and radar
applications. The HMC997LC4 is housed in a RoHS
compliant 4 x 4 mm ceramic QFN leadless package
and is compatible with high volume surface mount
manufacturing.
Electrical Specifications, TA = +25 °C, Vdd1, 2, 3 = 5V, Vctrl = -4.5V, Idd = 170 mA*
Parameter
Min.
Frequency Range
Typ.
Max.
Min.
Max.
Units
21 - 27
GHz
19
dB
±0.7
dB
0.02
dB/ °C
14
dB
4.0
3.5
dB
Input Return Loss
13
12
dB
Output Return Loss
17
19
dB
24
dBm
Gain
17 - 21
Typ.
17.0
Gain Flatness
0.02
12
Noise Figure
Output Power for 1 dB Compression (P1dB)
16
±0.3
Gain Variation Over Temperature
Gain Control Range
20
21
15
24
12
21
Saturated Output Power (Psat)
25
24.5
dBm
Output Third Order Intercept (IP3)
31
30
dBm
Total Supply Current (Idd)
170
170
mA
*Set Vctrl = -4.5V and then adjust Vgg1, 2 between -2V to 0V to achieve Idd = 170 mA typical.
1
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Gain vs. Control Voltage Range
Gain vs. Control Voltage
25
Vctl = -3.4V
Vctl = -3.1V
17 GHz
19 GHz
21 GHz
22 GHz
25 GHz
27 GHz
20
15
GAIN (dB)
GAIN (dB)
20
Vctl = -2,5V
Vctl = -2.8V
10
Vctl = -1.6V
Vctl = -2.2V
Vctl = -1.9V
5
15
10
5
Vctl = -1.0V
0
0
17
19
21
23
25
27
-4
-3.7
-3.4
FREQUENCY (GHz)
-2.5
-2.2
-1.9
-1.6
-1.3
-1
Gain vs. Temperature
30
30
20
+25C
+85C
-40C
26
10
GAIN (dB)
RESPONSE (dB)
-2.8
CONTROL VOLTAGE (V)
Broadband Gain & Return Loss
S21
S11
S22
0
22
18
-10
14
-20
10
-30
15
17
19
21
23
25
27
17
29
19
21
23
25
27
FREQUENCY (GHz)
FREQUENCY (GHz)
Input Return Loss vs. Temperature
Output Return Loss vs. Temperature
0
0
+25C
+85C
-40C
+25C
+85C
-40C
-5
RETURN LOSS (dB)
-5
RETURN LOSS (dB)
-3.1
Variable Gain Amplifier - SMT
25
Vctl = -4.5V
-10
-15
-20
-25
-10
-15
-20
-25
-30
-30
17
19
21
23
FREQUENCY (GHz)
25
27
17
19
21
23
25
27
FREQUENCY (GHz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
2
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Input Return Loss @
Control Voltage Extreme
Output Return Loss @
Control Voltage Extreme
0
-4.5 Volts
-1.0 Volts
-4.5 Volts
-1.0 Volts
-5
RETURN LOSS (dB)
RETURN LOSS (dB)
-5
-10
-15
-20
-25
-10
-15
-20
-25
-30
-30
17
19
21
23
25
27
17
19
FREQUENCY (GHz)
23
25
27
Noise Figure vs. Control Voltage
7
14
+25C
+85C
-40C
12
NOISE FIGURE (dB)
6
5
4
3
2
17 GHz
18 GHz
20 GHz
22 GHz
24 GHz
25 GHz
26 GHz
10
8
6
4
1
0
2
17
18
19
20
21
22
23
24
25
26
27
-4
-3.5
FREQUENCY (GHz)
-2.5
-2
-1.5
-1
Psat vs. Temperature
30
30
Vctrl = -4.5V
Vctrl = -4.5V
25
20
20
Psat (dBm)
25
15
Vctrl = -1V
10
-3
CONTROL VOLTAGE (V)
P1dB vs. Temperature
P1dB (dBm)
21
FREQUENCY (GHz)
Noise Figure vs. Temperature
NOISE FIGURE (dB)
Variable Gain Amplifier - SMT
0
15
Vctrl = -1V
10
+25C
+85C
-40C
5
+25C
+85C
-40C
5
0
0
17
19
21
23
25
27
FREQUENCY (GHz)
17
19
21
23
25
27
FREQUENCY (GHz)
[1] Tested with broadband bias tee on RF ports and C1 = 10,000 pF
[2] C1, C6 and C8 = 100 pF, L1 = 24 nF
3
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Reverse Isolation vs. Temperature
Output IP3 vs. Temperature
0
-10
+25C
+85C
-40C
-40
-50
25
20
Vctrl=-1V, Pout=+14dBm
-60
15
-70
-80
10
16
18
20
22
24
26
28
17
18
19
20
IP3 and Gain @ 18 GHz Pin = -20 dBm
35
35
30
30
IP3 (dBm), GAIN (dB)
40
25
20
15
10
0
-4.5
OIP3
GAIN
IIP3
-4
-3.5
-2.5
23
24
25
26
27
25
20
15
10
OIP3
GAIN
IIP3
5
-3
22
IP3 and Gain @ 22 GHz Pin = -20 dBm
40
5
21
FREQUENCY (GHz)
FREQUENCY (GHz)
IP3 (dBm), GAIN (dB)
+25C
+85C
-40C
Vctrl=-4.5V, Pout=+14dBm
30
-30
IP3 (dBm)
ISOLATION (dB)
-20
35
-2
-1.5
0
-4.5
-1
-4
-3.5
-3
-2.5
-2
-1.5
Variable Gain Amplifier - SMT
40
-1
CONTROL VOLTAGE (V)
CONTROL VOLTAGE (V)
IP3 and Gain @ 26 GHz Pin = -20 dBm
40
IP3 (dBm), GAIN (dB)
35
OIP3
GAIN
IIP3
30
25
20
15
10
5
0
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
CONTROL VOLTAGE (V)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
4
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Bias Voltage
Absolute Maximum Ratings
Variable Gain Amplifier - SMT
Drain Bias Voltage (Vdd1, 2, 3)
+5.5V
Vdd1,2,3 (V)
Idd Total (mA)
170
Gate Bias Voltage (Vgg1, 2)
-3 to 0V
+5V
Gain Control Voltage (Vctrl)
-5 to 0V
Vgg1,2 (V)
Igg Total (mA)
RF Power Input (RFIN)
+5 dBm
0V to -2V
<0.1 mA
Channel Temperature
175 °C
Continuous Pdiss (T = 85 °C)
(derate 10.2 mW/°C above 85 °C) [1]
0.92 W
Thermal Resistance
(Channel to ground paddle)
97.6 °C/W
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
ESD Sensitivity (HBM)
Class 0 Passed 100V
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES:
1.PACKAGE BODY MATERIAL: ALUMINA.
2.LEAD AND GROUND PADDLE PLATING: GOLD FLASH OVER NICKEL.
3. DIMENSIONS ARE IN INCHES (MILLIMETERS).
4.LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
5.PACKAGE WARP SHALL NOT EXCEED 0.05 MM DATUM – C –
6.ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO
PCB RF GROUND.
Package Information
Part Number
Package Body Material
Lead Finish
HMC997LC4
Alumina, White
Gold over Nickel
MSL Rating
MSL3
[1]
Package Marking [2]
H997
XXXX
[1] Max peak reflow temperature of 260 °C
[2] 4-Digit lot number XXXX
5
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Pin Descriptions
Function
Description
1, 2, 6, 8, 10,
11, 13, 17, 18,
20, 21, 23
N/C
The pins are not connected internally: however all data
shown herein was measured with these pins connected
to RF/DC ground externally
3, 5, 14, 16
GND
These pins and the exposed ground paddle
must be connected to RF/DC ground.
4
RFIN
This pad is AC coupled
and matched to 50 Ohm.
7, 12
Vgg1, 2
Gate control for amplifier. Adjust voltage to achieve typical
Idd. Please follow “MMIC Amplifier Biasing Procedure”
application note.
9
Vctrl
Gain control Voltage for the amplifier. See assembly
diagram for required external components.
15
RFOUT
This pad is AC coupled
and matched to 50 Ohm.
19, 22, 24
Vdd3, 2, 1
Drain Bias Voltage for the amplifier. See assembly diagram
for required external components
Interface Schematic
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
Variable Gain Amplifier - SMT
Pin Number
6
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Variable Gain Amplifier - SMT
Application Circuit
7
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC997LC4
v02.0514
VARIABLE GAIN AMPLIFIER
17 - 27 GHz
Variable Gain Amplifier - SMT
Evaluation PCB
List of Materials for Evaluation PCB
EVAL01-HMC997LC4 [1]
Item
Description
J1, J4
PCB Mount SMA RF Connectors
J5 - J10
DC Pin
C1 - C6
100 pF Capacitor, 0402 Pkg.
C7 - C12
1000 pF Capacitor, 0603 Pkg.
C13 - C18
2.2 µF Capacitor, CASE A
U1
HMC997LC4 Variable Gain Amplifier
PCB [2]
122172 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
The circuit board used in the application should use
RF circuit design techniques. Signal lines should
have 50 Ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown.
A sufficient number of via holes should be used to
connect the top and bottom ground planes. The
evaluation circuit board shown is available from
Hittite upon request.
[2] Circuit Board Material: Arlon 25 FR
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
8
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