ATTENUATORS - SMT
5
5 - 132
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
Functional Diagram
Electrical Speci cations, TA = +25° C, With Vdd = +5V & Vctl = 0/+5V*
The HMC467LP3 / HMC467LP3E is ideal for:
• Cellular; UMTS/3G Infrastructure
• Fixed Wireless & WLL
• Microwave Radio & VSAT
• Test Equipment
2 dB LSB Steps to 6 dB
High IP3: +50 dBm
± 0.2 dB Typical Bit Error
Single Control Line Per Bit
Single +5V Supply
3x3 mm SMT Package
The HMC467LP3 & HMC467LP3E are broadband
2-bit GaAs IC digital attenuators in low cost leadless
surface mount packages. Covering DC to 6.0 GHz, the
insertion loss is less than 0.7 dB typical. The attenuator
bit values are 2 (LSB) and 4 dB for a total attenuation
of 6 dB. Attenuation accuracy is excellent at ± 0.2 dB
typical step error with an IIP3 of +50 dBm. Two control
voltage inputs, toggled between 0 and +5V, 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 - 2.5 GHz
2.5 - 6.0 GHz
0.5
0.8
0.8
1.2
dB
dB
Attenuation Range DC - 6 GHz 6 dB
Return Loss (RF1 & RF2, All Atten. States) DC - 2.5 GHz
2.5 - 6.0 GHz
20
15
dB
dB
Attenuation Accuracy:
(Referenced to Insertion Loss)
2 dB State
4, 6 dB States DC - 6 GHz ± 0.2 + 2% of Atten. Setting Max.
± 0.4 + 2% of Atten. Setting Max.
dB
dB
Input Power for 0.1 dB Compression 0.25 - 6.0 GHz 22 dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone) 0.25 - 6.0 GHz 50 dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 6 GHz
135
155
ns
ns
* Bypass capacitor connecting ACG1 & ACG2 to RF ground required per pin description herein.
v01.0705 2 dB LSB GaAs MMIC 2-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6 GHz
HMC467LP3 / 467LP3E
Typical Applications Features
General Description
ATTENUATORS - SMT
5
5 - 133
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 4.5 5 5.5 6
+25 C
+85 C
-40 C
INSERTION LOSS (dB)
FREQUENCY (GHz)
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
IL
2 dB
4 dB
6 dB
RETURN LOSS (dB)
FREQUENCY (GHz)
-10
-8
-6
-4
-2
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
2 dB
4 dB
6 dB
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
246
80 MHz
500 MHz
1 GHz
2 GHz
3 GHz
4 GHz
5 GHz
6 GHz
BIT ERROR (dB)
ATTENUATION STATE (dB)
-1
-0.6
-0.2
0.2
0.6
1
0123456
2 dB
4 dB
6 dB
BIT ERROR (dB)
FREQUENCY (GHz)
-10
-5
0
5
10
15
20
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
2 dB
4 dB
6 dB
RELATIVE PHASE (deg)
FREQUENCY (GHz)
v01.0705 2 dB LSB GaAs MMIC 2-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6 GHz
HMC467LP3 / 467LP3E
ATTENUATORS - SMT
5
5 - 134
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
TTL/CMOS Control Voltages
Worst Case Step Error
Between Successive Attenuation States
-1
-0.6
-0.2
0.2
0.6
1
0123456
2 dB
4 dB
6 dB
STEP ERROR (dB)
FREQUENCY (GHz)
State Bias Condition
Low 0 to 0.8 Vdc @ -5 uA Typ.
High +2.0 to +5.0 Vdc @ 40 uA Typ.
Control Voltage Input
Attenuation Setting
RF1 - RF2
V1
4 dB
V2
2 dB
High High Reference I.L.
High Low 2 dB
Low High 4 dB
Low Low 6 dB
Max. Atten.
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
Bias Voltage & Current
Vdd Range= +5.0 Vdc ± 10%
Vdd
(Vdc)
Idd (Typ.)
(mA)
Idd (Max.)
(mA)
+5.0 0.7 1.2
v01.0705 2 dB LSB GaAs MMIC 2-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6 GHz
HMC467LP3 / 467LP3E
ATTENUATORS - SMT
5
5 - 135
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
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.
Control Voltage (V1, V2) -0.5 Vdc to Vdd +1 Vdc
Bias Voltage (Vdd) +7.0 Vdc
Staorage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
RF Input Power +30 dBm
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC467LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 467
XXXX
HMC467LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 467
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
v01.0705 2 dB LSB GaAs MMIC 2-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6 GHz
HMC467LP3 / 467LP3E
ATTENUATORS - SMT
5
5 - 136
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
1, 2, 4, 9 - 12,
14, 15 N/C These pins should be connected to PCB
RF ground to maximize performance.
3 Vdd Supply Voltage
5, 8 V2, V1 See truth table and control voltage table.
6, 7 ACG1, ACG2
External capacitor to ground is required.
Select value for lowest frequency of operation.
Place capacitor as close to pins as possible.
13, 16 RF2, RF1 These pins are DC coupled and matched to 50 Ohm. Blocking
capacitors are required.
GND Package bottom has an exposed metal paddle
that must be connected to RF/DC ground.
Application Circuit
v01.0705 2 dB LSB GaAs MMIC 2-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6 GHz
HMC467LP3 / 467LP3E
ATTENUATORS - SMT
5
5 - 137
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.
Item Description
J1 - J2 PCB Mount SMA Connector
J3 - J7 DC Pin
C1, C2 1000 pF Capacitor, 0402 Pkg.
C3 1000 pF Capacitor, 0603 Pkg.
C4 3300 pF Capacitor, 0603 Pkg.
U1 HMC467LP3 / HMC467LP3E Digital Attenuator
PCB [2] 106980 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
List of Materials for Evaluation PCB 107008 [1]
v01.0705 2 dB LSB GaAs MMIC 2-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 6 GHz
HMC467LP3 / 467LP3E