ATTENUATORS - SMT
5
5 - 144
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
HMC470LP3 / 470LP3E
1 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
v04.1108
Functional Diagram
Electrical Speci cations,
TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
The HMC470LP3(E) is ideal for:
• Cellular; UMTS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX
• Microwave Radio & VSAT
• Test Equipment and Sensors
1 dB LSB Steps to 31 dB
Single Control Line Per Bit
TTL/CMOS Compatible Control
± 0.3 dB Typical Step Error
Single +5V Supply
16 Lead 3x3mm SMT Package: 9mm
Included in the HMC-DK004 Designer’s Kit
The HMC470LP3(E) is a broadband 5-bit GaAs IC
digital attenuators in low cost leadless surface mo-
unt packages. This single positive control line per
bit digital attenuator incorporates off chip AC ground
capacitors for near DC operation, making it suitable
for a wide variety of RF and IF applications. Covering
DC to 3 GHz, the insertion loss is less than 1.5 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 ± 0.3 dB typical step error with
an IIP3 of +45 dBm. Five TTL/CMOS control inputs
are used to select each attenuation state. A single Vdd
bias of +5V is required.
Parameter Frequency (GHz) Min. Typ. Max. Units
Insertion Loss
DC - 1.5 GHz
1.5 - 2.3 GHz
2.3 - 3.0 GHz
1.3
1.4
1.7
1.6
1.7
2.0
dB
dB
dB
Attenuation Range DC - 3 GHz 31 dB
Return Loss (RF1 & RF2, All Atten. States) DC - 3 GHz 17 dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
1.0 - 15.0 dB States
16.0 - 31.0 dB States
DC - 2.3 GHz
2.3 - 3.0 GHz
2.3 - 3.0 GHz
± (0.3 + 2% of Atten. Setting) Max.
± (0.3 + 3% of Atten. Setting) Max.
± (0.3 + 6% of Atten. Setting) Max.
dB
dB
dB
Input Power for 0.1 dB Compression 0.1 - 3.0 GHz 20 dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
REF - 15 dB
States
16 - 31 dB States
0.1 - 3.0 GHz 45
35
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 3 GHz
160
180
ns
ns
Typical Applications Features
General Description
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
OBSOLETE
ATTENUATORS - SMT
5
5 - 145
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)
Insertion Loss
Normalized Attenuation
(Only Major States are Shown)
Bit Error vs. Frequency
(Only Major States are Shown)
Relative Phase vs. Frequency
(Only Major States are Shown)
Bit Error vs. Attenuation State
-3
-2.5
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
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
RETURN LOSS (dB)
FREQUENCY (GHz)
31 dB
16 dB
1 dB
2 dB
4 dB
I.L.dB
8 dB
-35
-30
-25
-20
-15
-10
-5
0
00.511.522.533.54
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
-1
-0.5
0
0.5
1
1.5
2
0 4 8 12 16 20 24 28 32
BIT ERROR (dB)
ATTENUATION STATE (dB)
3 GHz
40 MHz
500 MHz
2 GHz1 GHz
100 MHz
-2
-1.5
-1
-0.5
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
31 dB
1-8 dB
-40
-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
16 dB
8 dB
1-4 dB
HMC470LP3 / 470LP3E
v04.1108
1 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
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
OBSOLETE
ATTENUATORS - SMT
5
5 - 146
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
Truth Table
Control Voltage
Bias Voltage & Current
Worst Case Step Error
Between Successive Attenuation States
Vdd = +5V ± 10%
Vdd (V) Idd (Typ.)
(mA)
+4.5 4.0
+5.0 4.2
+5.5 4.4
State Bias Condition
Low 0 to +0.8V @ -5 uA Typ.
High +2.0 to + 5 Vdc @ 40 uA Typ.
Note: Vdd = +5V
Control Voltage Input Attenuation
State
RF1 - RF2
V1
16 dB
V2
8 dB
V3
4 dB
V4
2 dB
V5
1 dB
High High High High High Reference
I.L.
High High High High Low 1 dB
High High High Low High 2 dB
High High Low High High 4 dB
High Low High High High 8 dB
Low High High High High 16 dB
Low Low Low Low Low 31 dB
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
-1
-0.6
-0.2
0.2
0.6
1
0 0.5 1 1.5 2 2.5 3 3.5 4
STEP ERROR (dB)
FREQUENCY (GHz)
HMC470LP3 / 470LP3E
v04.1108
1 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
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
OBSOLETE
ATTENUATORS - SMT
5
5 - 147
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
Absolute Maximum Ratings
Outline Drawing
RF Input Power (DC - 3 GHz) +27 dBm (T = +85 °C)
Control Voltage Range (V1 to V5) -1V to Vdd +1V
Bias Voltage (Vdd) +7V
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 7.7 mW/°C above 85 °C) 0.5 W
Thermal Resistance 130 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC470LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 470
XXXX
HMC470LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 470
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
HMC470LP3 / 470LP3E
v04.1108
1 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
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
OBSOLETE
ATTENUATORS - SMT
5
5 - 148
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
Pin Descriptions
Pin Number Function Description Interface Schematic
1Vdd Supply Voltage.
2, 11 RF1, RF2
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required.
Select value based on lowest frequency of operation.
3, 10 N/C These pins should be connected to PCB RF ground to
maximize performance.
4 - 9 ACG1 - ACG6
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close
to pins as possible.
12 - 16 V1 - V5 See truth table and control voltage table.
GND Package bottom has an exposed metal paddle that must also
be connected to RF Ground.
Application Circuit
HMC470LP3 / 470LP3E
v04.1108
1 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
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
OBSOLETE
ATTENUATORS - SMT
5
5 - 149
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 PCB
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 107006 [1]
Item Description
J1 - J2 PC Mount SMA Connector
J3 12 Pin DC Connector
C1 1000 pF Capacitor, 0603 Pkg.
C2, C3 1000 pF Capacitor, 0402 Pkg.
C4 - C7 330 pF Capacitor, 0402 Pkg.
U1 HMC470LP3 / HMC470LP3E
Digital Attenuator
PCB [2] 106978 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350Re
HMC470LP3 / 470LP3E
v04.1108
1 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
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
OBSOLETE
