ATTENUATORS - SMT
5
5 - 66
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
HMC307QS16G / 307QS16GE
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
v08.0908
General Description
Features
Functional Diagram
1 dB LSB Steps to 31 dB
Single Control Line Per Bit
± 0.5 dB Typical Bit Error
Miniature QSOP-16 Package: 29.4 mm2
Electrical Speci cations, TA = +25° C, Vee = -5V & VCTL= 0/Vee
Typical Applications
The HMC307QS16G(E) are broadband 5-bit GaAs
IC digital attenuators in 16 lead QSOP grounded
base surface mount plastic packages. Covering DC
to 4 GHz, the insertion loss is less then 2 dB typical.
The attenuator bit values are 1 (LSB), 2, 4, 8, and 16
dB for a total attenuation of 31 dB. Attenuation accu-
racy 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 attenua-
tion state at less than 50 uA each. A single Vee bias of
-5V allows operation down to DC. This product is an
excellent alternative to the HMC235QS16G.
The HMC307QS16G(E) is ideal for:
• Cellular
• PCS, ISM, MMDS
• Wireless Local Loop
Parameter Frequency Min. Typical Max. Units
Insertion Loss
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
1.8
1.9
2.0
2.1
2.2
2.4
2.5
2.7
dB
dB
dB
dB
Attenuation Range DC - 4 GHz 31 dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
11
11
10
8
15
17
18
15
dB
dB
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
1 - 20 dB States
21 - 31 dB States
1 - 15 dB States
16 - 31 dB States
DC - 2.7 GHz
DC - 2.7 GHz
2.7 - 4.0 GHz
2.7 - 4.0 GHz
± 0.2 + 3% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.6 + 10% of Atten. Setting Max
dB
dB
dB
dB
Input Power for 0.1 dB Compression 0.5 - 4.0 GHz 24 dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone) 0.5 - 4.0 GHz 44 dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF) DC - 4 GHz 140
160
ns
ns
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
ATTENUATORS - SMT
5
5 - 67
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
Return Loss RF1, RF2
(Only Major States are Shown)
Absolute Bit Error
vs. Attenuation State
Insertion Loss
Normalized Attenuation
(Only Major States are Shown)
Absolute Bit Error vs. Frequency
(Only Major States are Shown)
Relative Phase vs. Frequency
(Only Major States are Shown)
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
+25
-40
+85
INSERTION LOSS (dB)
FREQUENCY (GHz)
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
0
0.5
1
1.5
2
1 4 7 1013161922252831
BIT ERROR (dB)
ATTENUATION STATE (dB)
1.9 GHz
2.4 GHz
0.9 GHz
0.1 GHz
3.5 GHz
-20
0
20
40
60
80
100
0 0.5 1 1.5 2 2.5 3 3.5 4
RELATIVE PHASE (deg.)
FREQUENCY (GHz)
31 dB
8 dB 4 dB16 dB
1, 2 dB
0
0.5
1
1.5
2
0 0.5 1 1.5 2 2.5 3 3.5 4
BIT ERROR (dB)
FREQUENCY (GHz)
16 dB 8 dB
31 dB
1, 2 & 4 dB
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
16 dB8 dB
2, 4 dB
31 dB
1 dB
HMC307QS16G / 307QS16GE
v08.0908
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
ATTENUATORS - SMT
5
5 - 68
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
Application Circuit
Truth TableControl Voltage
DC Blocking Capacitors C1 & C2 are
required on RF1 & RF2. Choose C1 = C2 =
100 pF ~ 0.1 uF to allow lowest customer
speci c frequency to pass with minimal
loss. R1= 5K Ohm is required to supply
voltage to the circuit through either Pin 11
or Pin 14.
Bias Voltage & Current
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.
Control Voltage Input Attenuation
State
RF1 - RF2
V1
16 dB
V2
8 dB
V3
4 dB
V4
2 dB
V5
1 dB
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.
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
State Bias Condition
Low 0 to -3V @ 70 uA Typ.
High Vee + 0.8V @ 5 uA Typ.
Note: Vee = -5V ± 10%
Vee Range = -5.0 Vdc ± 10%
Vee
(VDC)
lee (Typ.)
(mA)
lee (Max.)
(mA)
-5.0 3 6
HMC307QS16G / 307QS16GE
v08.0908
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
ATTENUATORS - SMT
5
5 - 69
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
Outline Drawing
Absolute Maximum Ratings
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 - 4 GHz) +26 dBm
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC307QS16G Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] HMC307
XXXX
HMC307QS16GE RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] HMC307
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS].
3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
5. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO
PCB RF GROUND.
HMC307QS16G / 307QS16GE
v08.0908
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
ATTENUATORS - SMT
5
5 - 70
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
Evaluation Circuit Board
The circuit board used in the nal 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.
List of Materials for Evaluation PCB 103397 [1]
* R2 - R6 = 100 Ohm.
These resistors are optional
and may be used to enhance
decoupling of the RF path
from the control inputs.
Item Description
J1 - J2 PCB Mount SMA Connector
J3 - J9 DC Pin
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
U1 HMC307QS16G(E ) Digital Attenuator
PCB [2] 103395 Evaluation PCB 1.5” x 1.5”
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC307QS16G / 307QS16GE
v08.0908
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
ATTENUATORS - SMT
5
5 - 71
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
Notes:
HMC307QS16G / 307QS16GE
v08.0908
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
