Hittite HMC812LC4 Gaas mmic voltage-variable attenuator, 5 - 30 ghz Datasheet

HMC812LC4
v00.0309
ATTENUATORS - ANALOG - SMT
5
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Typical Applications
Features
The HMC812LC4 is ideal for:
Wide Bandwidth: 5 - 30 GHz
• Point-to-Point Radio
Excellent Linearity: +25 dBm Input P1dB
• VSAT Radio
Wide Attenuation Range: 30 dB
• Test Instrumentation
24 Lead Ceramic 4x4mm SMT Package: 16mm2
• 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 voltages, Vctrl1 and Vctrl2. Optimum linearity performance 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 leadless ceramic package
However, if the Vctrl1 and Vctrl2 pins are connected
together it is possible to achieve the full analog attenuation 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 Specifi cations, TA = +25° C, 50 Ohm system
Parameter
Typ.
Max.
Units
2
3
4
dB
dB
dB
Attenuation Range
30
dB
Input Return Loss
12
dB
Output Return Loss
8
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
Insertion Loss
5 - 218
Min.
5 - 16 GHz
16 - 24 GHz
24 - 30 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
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
-5
-10
-10
-15
-3.0 V
-1.8 V
-1.4 V
-0.8 V
0.0 V
-20
-30
-3.0 V
-2.0 V
-1.6 V
-1.0 V
0.0 V
-40
-25
-50
2
6
10
14
18
22
26
30
2
6
10
FREQUENCY (GHz)
14
18
Attenuation vs. Vctrl1
Over Temperature @ 10 GHz, Vctrl2 = -3V
26
30
Attenuation vs. Vctrl2
Over Temperature @ 10 GHz, Vctrl1 = 0V
0
0
-5
+25 C
+85 C
-40 C
ATTENUATION (dB)
-3
ATTENUATION (dB)
22
FREQUENCY (GHz)
-6
-9
+25 C
+85 C
-40 C
-12
-10
-15
-20
ATTENUATORS - ANALOG - SMT
0
ATTENUATION (dB)
ATTENUATION (dB)
0
-20
5
Attenuation vs. Frequency over Vctrl
Vctrl1 = 0V, Vctrl2 = Variable
Attenuation vs. Frequency over Vctrl
Vctrl1 = Variable, Vctrl2 = -3V
-25
-30
-15
-35
-3
-2.5
-2
-1.5
-1
-0.5
-3
0
-2.5
-2
Vctrl1 (V)
-1.5
-1
-0.5
0
Vctrl2 (V)
Attenuation vs. Pin @ 10 GHz
Vctrl1 = Variable, Vctrl2 = -3V
Input Return Loss
Vctrl1 = Variable, Vctrl2 = -3V
0
0
RETURN LOSS (dB)
ATTENUATION (dB)
-3
-6
-9
-12
-3.0 V
-1.8 V
-1.4 V
-15
-10
-20
-3.0 V
-1.6 V
0.0 V
-30
-0.8 V
0.0 V
-18
-40
0
3
6
9
12
INPUT POWER (dBm)
15
18
2
6
10
14
18
22
26
30
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
5 - 219
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
Output Return Loss
Vctrl1 = Variable, Vctrl2 = -3V
Input Return Loss
Vctrl1 = 0V, Vctrl2 = Variable
0
RETURN LOSS (dB)
RETURN LOSS (dB)
-10
-3.0 V
-1.6 V
0.0 V
-20
-30
6
10
14
18
22
26
-20
-3.0 V
-1.6 V
0.0 V
-30
30
2
6
10
FREQUENCY (GHz)
14
18
22
26
30
FREQUENCY (GHz)
Output Return Loss
Vctrl1 = 0V, Vctrl2 = Variable
Input IP3 vs Input Power @ 10 GHz
Vctrl1 = Variable, Vctrl2 = -3V
0
60
50
IP3 (dBm)
-10
40
30
-20
-3.0 V
-1.4 V
0.0 V
-3.0 V
-2.6 V
-2.2 V
-1.8 V
0.0 V
20
-30
10
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
Vctrl1 = -2.2V, Vctrl2 = -3V (Worst Case IP3)
Input IP3 vs. Input Power Over Temperature
@ 10 GHz, Vctrl1 = -2.2V, Vctrl2 = -3V
30
30
IP3 (dBm)
35
IP3 (dBm)
35
5 GHz
10 GHz
20 GHz
30 GHz
25
+25 C
+85 C
-40 C
25
20
20
0
3
6
9
12
15
SINGLE TONE INPUT POWER (dBm)
5 - 220
-10
-40
2
RETURN LOSS (dB)
ATTENUATORS - ANALOG - SMT
0
18
0
3
6
9
12
15
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
18
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
ATTENUATION (dB)
ATTENUATION (dB)
-10
-20
-30
-3.0 V
-1.8 V
-1.4 V
-0.8 V
0.0 V
-40
-50
-10
-20
+25 C
+85 C
-40 C
-30
-40
2
6
10
14
18
22
26
-3
30
-2.5
-2
-1.5
-1
-0.5
0
CONTROL VOLTAGE (V)
FREQUENCY (GHz)
Attenuation vs. Input Power over Vctrl
Vctrl1 = Vctrl2
Input Return Loss, Vctrl1 = Vctrl2
0
0
RETURN LOSS (dB)
-10
-20
-30
-3.0 V
-1.8 V
-1.4 V
-40
-0.8 V
0.0 V
-50
-10
-20
-30
ATTENUATORS - ANALOG - SMT
0
0
ATTENUATION (dB)
5
-3.0 V
-1.6 V
0.0 V
-40
0
3
6
9
12
15
2
18
6
10
14
18
22
26
30
FREQUENCY (GHz)
INPUT POWER (dBm)
Input IP3 vs. Input Power Over
Vctrl @ 10 GHz, Vctrl1 = Vctrl2
Output Return Loss, Vctrl1 = Vctrl2
60
0
40
-10
IP3 (dBm)
RETURN LOSS (dB)
50
-20
30
20
-3.0 V
-1.6 V
0.0 V
-3.0 V
-2.6 V
-2.2 V
-1.8 V
0.0 V
10
-30
0
2
6
10
14
18
FREQUENCY (GHz)
22
26
30
0
3
6
9
12
15
18
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
5 - 221
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
ATTENUATORS - ANALOG - SMT
5
Absolute Maximum Ratings
Control Voltages
RF Input Power
+30 dBm
Vctrl1
-3 to 0V @ 10 μA
Control Voltage Range
+1 to -5V
Vctrl2
-3 to 0V @ 10 μA
Channel Temperature
150 °C
Continuous Pdiss (T = 85 °C)
(derate 16.4 mW/ °C above 85 °C)
1W
Thermal Resistance
(Channel to ground paddle)
61 °C/W
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
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.
5 - 222
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
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Pin Number
Function
Description
1, 2, 6 - 8,
11 - 13, 17 - 24
N/C
No connection
3, 5, 14, 16
GND
Die bottom must be connected to RF/DC ground.
4
RFIN
Interface Schematic
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
9
Vctrl1
Control Voltage 1
10
Vctrl2
Control Voltage 2
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
ATTENUATORS - ANALOG - SMT
5
Pin Descriptions
5 - 223
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Application Circuit
ATTENUATORS - ANALOG - SMT
5
5 - 224
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
HMC812LC4
v00.0309
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
5
ATTENUATORS - ANALOG - SMT
Evaluation PCB
List of Materials for Evaluation PCB 123768 [1]
Item
Description
J1, J2
2.9 mm PC Mount RF Connector
J3, J4
DC Pin
C1, C2
100 pF Capacitor, 0402 Pkg.
C3, C4
1000 pF Capacitor, 0402 Pkg.
C5, C6
4.7 μF Capacitor, CASE A
U1
HMC812LC4 Analog VVA
PCB [2]
123766 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
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 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 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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