HMC812LC4 [HITTITE]
GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz; 砷化镓MMIC压控衰减器， 5 - 30 GHz的
| 型号： | HMC812LC4 |
| 厂家： | 
HITTITE MICROWAVE CORPORATION |
| 描述： | GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz |
| 文件： | 总8页 (文件大小：297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
Typical Applications
Features
Wide Bandwidth: 5 - 30 GHz
The HMC812LC4 is ideal for:
• Point-to-Point Radio
• VSAT Radio
Excellent Linearity: +25 dBm Input P1dB
Wide Attenuation Range: 30 dB
24 Lead Ceramic 4x4mm SMT Package: 16mmꢀ
• Test Instrumentation
• Microwave Sensors
• Military, ECM & Radar
General Description
Functional Diagram
The HMC812LC4 is an absorptive Voltage Variable
Attenuator (VVA) which operates from 5 - 30 GHz
and is ideal in designs where an analog DC control
signal must be used to control RF signal levels over a
30 dB amplitude range. It features two shunt-type
attenuators which are controlled by two analog vol-
tages, Vctrl1 and Vctrl2. Optimum linearity perfor-
mance of the attenuator is achieved by first varying
Vctrl1 of the 1st attenuation stage from -3V to 0V
with Vctrl2 fixed at -3V. The control voltage of the
2nd attenuation stage, Vctrl2, should then be varied
from -3V to 0V, with Vctrl1 fixed at 0V. The HMC812LC4
is housed in a RoHS compliant 4x4 mm QFN lead-
less ceramic package
However, if the Vctrl1 and Vctrl2 pins are connected
together it is possible to achieve the full analog atten-
uation range with only a small degradation in input
IP3 performance. Applications include AGC circuits
and temperature compensation of multiple gain stages
in microwave point-to-point and VSAT radios.
Electrical Specifications, TA = +25° C, 50 Ohm system
Parameter
Min.
Typ.
Max.
Units
5 - 16 GHz
16 - 24 GHz
24 - 30 GHz
2
3
4
dB
dB
dB
Insertion Loss
Attenuation Range
30
12
8
dB
dB
Input Return Loss
Output Return Loss
dB
Input Power for 1 dB Compression (any attenuation)
25
dBm
Input Third Order Intercept
(Two-tone Input Power = 10 dBm Each Tone)
28
dBm
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 218
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Attenuation vs. Frequency over Vctrl
Vctrl1 = Variable, Vctrl2 = -3V
Attenuation vs. Frequency over Vctrl
Vctrl1 = 0V, Vctrl2 = Variable
5
0
0
-5
-10
-15
-10
-20
-30
-3.0 V
-1.8 V
-1.4 V
-0.8 V
0.0 V
-3.0 V
-2.0 V
-20
-25
-40
-1.6 V
-1.0 V
0.0 V
-50
2
6
10
14
18
22
26
30
2
6
10
14
18
22
26
30
FREQUENCY (GHz)
FREQUENCY (GHz)
Attenuation vs. Vctrl1
Attenuation vs. Vctrl2
Over Temperature @ 10 GHz, Vctrl2 = -3V
Over Temperature @ 10 GHz, Vctrl1 = 0V
0
0
-5
+25 C
-3
-6
+85 C
-40 C
-10
-15
-20
-25
-30
-35
-9
+25 C
+85 C
-40 C
-12
-15
-3
-2.5
-2
-1.5
-1
-0.5
0
-3
-2.5
-2
-1.5
-1
-0.5
0
Vctrl1 (V)
Vctrl2 (V)
Attenuation vs. Pin @ 10 GHz
Input Return Loss
Vctrl1 = Variable, Vctrl2 = -3V
Vctrl1 = Variable, Vctrl2 = -3V
0
0
-3
-6
-10
-20
-30
-40
-9
-12
-3.0 V
-1.6 V
0.0 V
-3.0 V
-1.8 V
-1.4 V
-0.8 V
0.0 V
-15
-18
0
3
6
9
12
15
18
2
6
10
14
18
22
26
30
INPUT POWER (dBm)
FREQUENCY (GHz)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Output Return Loss
Vctrl1 = Variable, Vctrl2 = -3V
Input Return Loss
Vctrl1 = 0V, Vctrl2 = Variable
5
0
0
-10
-10
-20
-3.0 V
-1.6 V
0.0 V
-20
-30
-3.0 V
-1.6 V
0.0 V
-30
-40
2
6
10
14
18
22
26
30
2
6
10
14
18
22
26
30
FREQUENCY (GHz)
FREQUENCY (GHz)
Output Return Loss
Input IP3 vs Input Power @ 10 GHz
Vctrl1 = 0V, Vctrl2 = Variable
Vctrl1 = Variable, Vctrl2 = -3V
0
60
50
40
30
-10
-20
-3.0 V
-2.6 V
-2.2 V
-1.8 V
0.0 V
-3.0 V
-1.4 V
0.0 V
20
10
-30
2
6
10
14
18
22
26
30
0
3
6
9
12
15
18
FREQUENCY (GHz)
SINGLE TONE INPUT POWER (dBm)
Input IP3 vs. Input Power Over Frequency
Input IP3 vs. Input Power Over Temperature
Vctrl1 = -2.2V, Vctrl2 = -3V (Worst Case IP3)
@ 10 GHz, Vctrl1 = -2.2V, Vctrl2 = -3V
35
35
30
30
5 GHz
+25 C
10 GHz
25
25
+85 C
20 GHz
30 GHz
-40 C
20
20
0
3
6
9
12
15
18
0
3
6
9
12
15
18
SINGLE TONE INPUT POWER (dBm)
SINGLE TONE INPUT POWER (dBm)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Attenuation vs. Vctrl over Temperature
@ 10 GHz, Vctrl1 = Vctrl2
Attenuation vs. Frequency over Vctrl
Vctrl1 = Vctrl2
5
0
0
-10
-20
-10
-20
-30
+25 C
-3.0 V
-30
+85 C
-1.8 V
-40
-40 C
-1.4 V
-0.8 V
0.0 V
-50
-40
2
6
10
14
18
22
26
30
-3
-2.5
-2
-1.5
-1
-0.5
0
FREQUENCY (GHz)
CONTROL VOLTAGE (V)
Attenuation vs. Input Power over Vctrl
Vctrl1 = Vctrl2
Input Return Loss, Vctrl1 = Vctrl2
0
0
-10
-20
-30
-10
-20
-30
-3.0 V
-1.8 V
-1.4 V
-0.8 V
0.0 V
-3.0 V
-1.6 V
0.0 V
-40
-50
-40
0
3
6
9
12
15
18
2
6
10
14
18
22
26
30
INPUT POWER (dBm)
FREQUENCY (GHz)
Input IP3 vs. Input Power Over
Vctrl @ 10 GHz, Vctrl1 = Vctrl2
Output Return Loss, Vctrl1 = Vctrl2
0
60
50
40
30
20
10
0
-10
-20
-3.0 V
-2.6 V
-2.2 V
-1.8 V
0.0 V
-3.0 V
-1.6 V
0.0 V
-30
2
6
10
14
18
22
26
30
0
3
6
9
12
15
18
FREQUENCY (GHz)
SINGLE TONE INPUT POWER (dBm)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
Absolute Maximum Ratings
Control Voltages
RF Input Power
+30 dBm
Vctrl1
-3 to 0V @ 10 μA
Control Voltage Range
Channel Temperature
+1 to -5V
Vctrl2
-3 to 0V @ 10 μA
150 °C
1W
Continuous Pdiss (T = 85 °C)
(derate 16.4 mW/ °C above 85 °C)
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Thermal Resistance
(Channel to ground paddle)
61 °C/W
Storage Temperature
Operating Temperature
-65 to +150 °C
-40 to +85 °C
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY.
3. LEAD AND GROUND PADDLE PLATING: 100% MATTE TIN.
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
6. PAD BURR LENGTH SHALL BE 0.15mm MAX.
PAD BURR HEIGHT SHALL BE 0.05mm MAX.
7. PACKAGE WARP SHALL NOT EXCEED 0.05mm
8. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
9. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED PCB
LAND PATTERN.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
Pin Descriptions
Pin Number
Function
N/C
Description
No connection
Interface Schematic
1, 2, 6 - 8,
11 - 13, 17 - 24
3, 5, 14, 16
GND
RFIN
Die bottom must be connected to RF/DC ground.
4
This pad is DC coupled and matched to 50 Ohms.
A blocking capacitor is required if RF line potential
is not equal to 0V.
15
RFOUT
Vctrl1
9
Control Voltage 1
Control Voltage 2
10
Vctrl2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 223
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
Application Circuit
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 224
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
Evaluation PCB
List of Materials for Evaluation PCB 123768 [1]
The circuit board used in the final application should
use RF circuit design techniques. Signal lines
should have 50 ohm impedance while the package
ground leads and exposed paddle should be con-
nected 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.
Item
Description
J1, J2
J3, J4
C1, C2
C3, C4
C5, C6
U1
2.9 mm PC Mount RF Connector
DC Pin
100 pF Capacitor, 0402 Pkg.
1000 pF Capacitor, 0402 Pkg.
4.7 μF Capacitor, CASE A
HMC812LC4 Analog VVA
123766 Evaluation PCB
[2]
PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR or Rogers 4350
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 225
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