PASSIVES - SMT
12
12 - 1
For price, delivery and to place orders: 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 Support: Phone: 978-250-3343 or apps@hittite.com
HMC656LP2E to HMC658LP2E
WIDEBAND FIXED ATTENUATOR FAMILY, DC - 25 GHz
HMC656LP2E / HMC657LP2E / HMC658LP2E
v02.0112
General Description
Features
Functional Diagrams
3 Attenuator Products:
10, 15, & 20 dB Fixed Attenuation Levels
Wide Bandwidth: DC - 25 GHz
Excellent Attenuation Accuracy
Power Handling: +25 dBm
6 Lead 2x2mm SMT Package: 4mm2
Electrical Specications, TA = +25° C, 50 Ohm system
Typical Applications
The HMC656LP2E - HMC658LP2E are ideal for:
• Fiber Optics
• Microwave Radio
• Military & Space
• Test & Measurement
• Scientic Instruments
• RF / Microwave Circuit Prototyping
The HMC656LP2E / 657LP2E / 658LP2E are a
line of wideband xed value SMT 50 Ohm matched
attenuators which offer relative attenuation levels
of 10, 15 and 20 dB respectively. These passive
attenuators are ideal for military, test equipment, and
other wideband applications where extremely at
attenuation, and excellent VSWR vs. frequency are
required.
These wideband attenuators handle up to +25 dBm
of input power, and are compatible with high volume
surface mount manufacturing techniques.
Part Number Attenuator Value
Return Loss
(Min.)
Return Loss
(Typ.) Attenuation Tolerance [1] Temperature Coefficient (Typical) [2] Units
DC - 25 GHz
HMC656LP2E 10 712 ± 1.5 0.0004 dB
HMC657LP2E 15 714 ± 2.0 0.0006 dB
HMC658LP2E 20 712 ±2.0 0.0004 dB
[1] Attenuation Tolerance is valid over temperature.
[2] Temperature Coefficient Units are dB/ °C.
PASSIVES - SMT
12
12 - 2
For price, delivery and to place orders: 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 Support: Phone: 978-250-3343 or apps@hittite.com
Attenuation vs. Temperature
HMC656LP2E to HMC658LP2E
v02.0112
WIDEBAND FIXED ATTENUATOR FAMILY, DC - 25 GHz
HMC656LP2E / HMC657LP2E / HMC658LP2E
Return Loss
Absolute Maximum Ratings
Part Number HMC656LP2E HMC657LP2E HMC658LP2E Units
RF Input Power (CW) 25 25 25 dBm
DC Voltage Terminated 4.9 4.4 4.8 V
DC Voltage Open 5.3 4.6 4.9 V
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1B Class 1B Class 1B
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
-25
-20
-15
-10
-5
0
0 5 10 15 20 25 30
ATTENUATION (dB)
FREQUENCY (GHz)
HMC656LP2
HMC657LP2
HMC658LP2
-30
-25
-20
-15
-10
-5
0
0 5 10 15 20 25 30
RETURN LOSS (dB)
FREQUENCY (GHz)
HMC656
HMC658
HMC657
PASSIVES - SMT
12
12 - 3
For price, delivery and to place orders: 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 Support: Phone: 978-250-3343 or apps@hittite.com
HMC656LP2E to HMC658LP2E
v02.0112
WIDEBAND FIXED ATTENUATOR FAMILY, DC - 25 GHz
HMC656LP2E / HMC657LP2E / HMC658LP2E
Outline Drawing
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC656LP2 through
HMC658LP2 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] NNN
XXX
HMC656LP2E through
HMC658LP2E
RoHS-compliant Low Stress Injection
Molded Plastic 100% matte Sn MSL1 [2] NNN
XXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 3-Digit lot number XXX
Package Information
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.
Pin Number Function Description Interface Schematic
1, 3, 4, 6 GND Package bottom must be connected to RF/DC ground.
2, 5 RF1, RF2
This pin is DC coupled and matched to 50 Ohms.
Use DC Blocking capacitors if the input / output signals
have non-zero DC potential
Pin Descriptions
PASSIVES - SMT
12
12 - 4
For price, delivery and to place orders: 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 Support: Phone: 978-250-3343 or apps@hittite.com
HMC656LP2E to HMC658LP2E
v02.0112
WIDEBAND FIXED ATTENUATOR FAMILY, DC - 25 GHz
HMC656LP2E / HMC657LP2E / HMC658LP2E
Evaluation PCB
List of Materials for Evaluation PCB 119197 [1]
Item Description
J1 - J2 PCB Mount SMA Connector
U1 HMC656LP2E through HMC658LP2E
Passive Attenuator
PCB [2] 119194 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the nal application should
be generated with proper RF circuit design tech-
niques. Signal lines at the RF port should have 50
ohm impedance and the package ground leads and
exposed paddle should be connected directly to the
ground plane similar to that shown above. The eval-
uation circuit board shown above is available from
Hittite Microwave Corporation upon request.
