HITTITE HMC335G16

HMC335G16
v00.1102
MICROWAVE CORPORATION
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
ATTENUATORS - SMT
9
Typical Applications
Features
The HMC335G16 is ideal for:
1 dB LSB Steps to 31 dB
• Telecom Infrastructure
Single Control Line Per Bit
• Military Radios, Radar & ECM
+/- 0.5 dB Typical Bit Error
• Space Applications
16 Lead Hermetic SMT Package
• Test Instrumentation
Functional Diagram
General Description
The HMC335G16 is a broadband 5-bit GaAs IC
digital attenuator in a 16 lead glass/metal (hermetic)
surface mount package. Covering DC to 3 GHz, the
insertion loss is less than 2.3 dB typical. The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for
a total attenuation of 31 dB. Attenuation accuracy
is excellent at ±0.5 dB typical with an IIP3 of up to
+44 dBm. Five bit control voltage inputs, toggled
between 0 and -5V, are used to select each attenuation state at less than 70 µA each. A single Vee bias
of -5V allows operation down to DC.
Electrical Specifications, TA = +25° C, Vee = -5V & Vctl = 0/Vee
Parameter
Min.
Typical
Max.
Units
2.5
2.8
dB
dB
Insertion Loss
DC - 1.5 GHz
1.5 - 3.0 GHz
2.0
2.3
Attenuation Range
DC - 3.0 GHz
31
dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 3.0 GHz
13
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
1 - 31 dB States
1 - 27 dB States
28 - 31 dB States
1 - 23 dB States
24 - 27 dB States
28 - 31 dB States
DC - 1.0 GHz
1.0 - 2.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
2.0 - 3.0 GHz
2.0 - 3.0 GHz
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 8% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 8% of Atten. Setting Max
± 0.5 + 10% of Atten. Setting Max
dB
dB
dB
dB
dB
dB
Input Power for 0.1 dB Compression
0.5 - 3.0 GHz
24
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
0.5 - 3.0 GHz
44
dBm
Switching Characteristics
DC - 3.0 GHz
140
160
ns
ns
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
9 - 56
Frequency
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
HMC335G16
v00.1102
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Return Loss RF1, RF2
Insertion Loss
(Only Major States are Shown)
0
0
-3
+25C
+85C
-40C
-5
-15
-20
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
-25
-30
-6
-35
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0.5
1
FREQUENCY (GHz)
Normalized Attenuation
2
2.5
0
3.5
4
3
-5
2
BIT ERROR (dB)
-10
-15
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
-20
-25
1
0
-1
-30
-2
-35
-3
0.12 GHz
1.0 GHz
2.0 GHz
3.0 GHz
0
0.5
1
1.5
2
2.5
3
3.5
4
0
2
4
6
8 10 12 14 16 18 20 22 24 26 28 30 32
FREQUENCY (GHz)
ATTENUATION STATE (dB)
Bit Error vs. Frequency
Relative Phase vs. Frequency
(Only Major States are Shown)
(Only Major States are Shown)
5
100
4
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
80
RELATVIE PHASE (deg)
3
BIT ERROR (dB)
3
Bit Error
vs. Attenuation State
(Only Major States are Shown)
NORMALIZED ATTENUATION (dB)
1.5
FREQUENCY (GHz)
ATTENUATORS - SMT
-2
-4
-10
RETURN LOSS (dB)
INSERTION LOSS (dB)
9
-5
-1
2
1
0
-1
-2
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
-3
-4
60
40
20
0
-5
-20
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
3
3.5
4
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
9 - 57
HMC335G16
v00.1102
MICROWAVE CORPORATION
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Worst Case Step Error
Between Successive Attenuation States
3
2
STEP ERROR (dB)
ATTENUATORS - SMT
9
1
0
-1
-2
-3
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
Bias Voltage & Current
Truth Table
Vee Range = -5.0 Vdc ± 10%
Control Voltage Input
Vee (VDC)
lee (Typ.) (mA)
lee (Max.) (mA)
-5.0
3
6
Control Voltage
State
Bias Condition
Low
0 to -2V @ 70 µA Typ.
High
Vee to Vee + 0.8V @ 5 µA Typ.
V1
16 dB
V2
8 dB
V3
4 dB
V4
2 dB
V5
1 dB
Attenuation
State
RF1 - RF2
Low
Low
Low
Low
Low
Reference I.L.
Low
Low
Low
Low
High
1 dB
Low
Low
Low
High
Low
2 dB
Low
Low
High
Low
Low
4 dB
Low
High
Low
Low
Low
8 dB
High
Low
Low
Low
Low
16 dB
High
High
High
High
High
31 dB
Max. Atten.
Note: Vee = -5V ± 10%
Absolute Maximum Ratings
9 - 58
Control Voltage (V1 - V5)
Vee - 0.5 Vdc
Bias Voltage (Vee)
-7.0 Vdc
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
RF Input Power (0.5 - 3 GHz)
+26 dBm
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
HMC335G16
v00.1102
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Outline Drawing
ATTENUATORS - SMT
9
NOTES:
1. PACKAGE MATERIAL: ALUMINA LOADED BOROSILICATE GLASS.
2. LEADS, BASE, COVER MATEIRAL: KOVARTM (#7052 CORNING).
3. PLATING: ELECTROLYTIC GOLD 50 MICROINCHES MIN.,
OVER ELECTROLYTIC NICKEL 75 MICROINCHES MIN.
4. ALL DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. TOLERANCES: 0.005 [.013] UNLESS OTHERWISE SPECIFIED.
6. CHARACTERS TO BE HELVETICA MEDIUM .030 HIGH,
BLACK INK, LOCATED APPROX. AS SHOWN.
7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
Pin Descriptions
Pin Number
Function
Description
1
Vee
Supply Voltage -5V ±10%
2, 4-9, 11
GND
Package bottom must also be connected to RF ground.
3, 10
RF1, RF2
These pins are DC coupled and matched to 50 Ohm.
Blocking capacitors are required.
12-16
V1-V5
See truth table and control voltage table.
Interface Schematic
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
9 - 59
MICROWAVE CORPORATION
HMC335G16
v00.1102
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Application Circuit
ATTENUATORS - SMT
9
DC Blocking Capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 pF ~ 0.1 uF to allow lowest customer
specific frequency to pass with minimal loss. R1= 5K Ohm is required to supply voltage to the circuit through either Pin 3 or
Pin 10.
Suggested Driver Circuit
(One Circuit Required Per Bit Control Input)
Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. * Recommended value
to suppress unwanted RF signals at V1 - V5 control lines.
9 - 60
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
v00.1102
HMC335G16
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 3 GHz
Evaluation PCB
* R2 - R6 = 100 Ohm.
These resistors are optional and may be
used to enhance decoupling of the RF
path from the control inputs.
ATTENUATORS - SMT
9
List of Material
Item
Description
J1 - J2
PC Mount SMA Connector
J3
DC Connector
R1
5k Ohm Resistor 0402 Pkg.
R2 - R6
100 Ohm Resistor, 0402 Pkg.
C1, C2
0402 Chip Capacitor,
Select Value for Lowest Frequency of Operation
C3
1000pF Capacitor, 0603 Pkg.
U1
HMC335G16 Digital Attenuator
PCB*
106467 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 package bottom
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.
*Circuit Board Material: Rogers 4350
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
9 - 61