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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
HMC541LP3
/
541LP3E
10 dB GaAs MMIC 1-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.0 GHz
v00.0605
Functional Diagram
Electrical Specifications,
T
A
= +25 C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
The HMC541LP3 / HMC541LP3E is ideal for both RF
and IF applications:
Cellular Infrastructure
ISM, MMDS, WLAN, WiMAX, WiBro
Microwave Radio & VSAT
Test Equipment and Sensors
+/- 0.2 dB Typical Step Error
Low Insertion Loss: 1.0 dB
High IP3: +50 dBm
Single Control Line
TTL/CMOS Compatible Control
Single +5V Supply
3x3 mm SMT Package
The HMC541LP3 & HMC541LP3E are broadband
1-bit GaAs IC digital attenuators in low cost lead-
less surface mount packages. This single posi-
tive control line digital attenuator utilizes off chip
AC ground capacitors for near DC operation,
making it suitable for a wide variety of RF and IF
applications. Covering DC to 5.0 GHz, the insertion
loss is less than 1.0 dB typical. Attenuation accuracy is
excellent at 0.2 dB typical step error. The attenuator
also features a high IIP3 of +50 dBm. One TTL/CMOS
control input is used to select the attenuation state. A
single Vdd bias of +5V is required.
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
Insertion Loss
DC - 2.0 GHz
2.0 - 3.5 GHz
3.5 - 5.0 GHz
0.5
1.0
2.0
0.8
1.3
2.3
dB
dB
dB
Attenuation Range
DC - 5.0 GHz
10
dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 2.5 GHz
2.5 - 5.0 GHz
25
15
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
DC - 5.0 GHz
0.4 Max.
dB
Input Power for 0.1 dB Compression
0.1 - 5.0 GHz
27
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
0.1 - 5.0 GHz
50
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 5.0 GHz
20
23
ns
ns
Typical Applications
Features
General Description
9
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T
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S - SM
T
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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
Insertion Loss
Normalized Attenuation
Bit Error vs. Frequency
Relative Phase vs. Frequency
HMC541LP3
/
541LP3E
v00.0605
10 dB GaAs MMIC 1-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.0 GHz
-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
4.5
5
5.5
6
+25 C
+85 C
-40 C
INSERTION LOSS (dB)
FREQUENCY (GHz)
-12
-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
NORMALI
ZED ATTENUATI
ON (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
10
20
30
40
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
RELATIVE PHASE (deg)
FREQUENCY (GHz)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
BI
T ERROR (dB)
FREQUENCY (GHz)
-40
-35
-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
RETURN LOSS (dB)
FREQUENCY (GHz)
10 dB
I.L.dB
Input IP3 vs. Frequency
0
10
20
30
40
50
60
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
I.L. dB
10 dB
INPUT IP3 (dBm)
FREQUENCY (GHz)
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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
Vdd = +5.0 Vdc 10%
Vdd
(VDC)
Idd (Typ.)
(mA)
+4.5
1.3
+5.0
1.5
+5.5
1.7
State
Bias Condition
Low
0 to +0.8V @ -5 uA Typ.
High
+2.0 to + 5.0 Vdc @ 40 uA Typ.
Note: Vdd = +5V
Control Voltage Input
Attenuation State
RF1 - RF2
V1
10 dB
High
Reference
I.L.
Low
10 dB
HMC541LP3
/
541LP3E
v00.0605
10 dB GaAs MMIC 1-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.0 GHz
9
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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 - 5.0 GHz)
+27 dBm (T = +85 C)
Control Voltage Range (V1)
-1V to Vdd +1V
Bias Voltage (Vdd)
+7.0 Vdc
Channel Temperature
150 C
Continuous Pdiss (T = 85 C)
(derate 14.7 mW/C above 85 C)
0.96 W
Thermal Resistance
68 C/W
Storage Temperature
-65 to +150 C
Operating Temperature
-40 to +85 C
ESD Sensitivity (HBM)
Class 1B
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]
HMC541LP3
Low Stress Injection Molded Plastic
Sn/Pb Solder
MSL1
[1]
541
XXXX
HMC541LP3E
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL1
[2]
541
XXXX
[1] Max peak refl ow temperature of 235 C
[2] Max peak refl ow temperature of 260 C
[3] 4-Digit lot number XXXX
Package Information
HMC541LP3
/
541LP3E
v00.0605
10 dB GaAs MMIC 1-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.0 GHz
9
A
T
T
E
N
U
A
T
O
R
S - SM
T
9 - 182
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
Vdd
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, 4, 6, 7,
9, 10, 12,
13, 15, 16
N/C
These pins should be connected to PCB RF ground to
maximize performance.
5, 8
ACG1, ACG2
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close
to pins as possible.
14
V1
See truth table and control voltage table.
GND
Package bottom has an exposed metal paddle that must be
connected to RF Ground.
Application Circuit
HMC541LP3
/
541LP3E
v00.0605
10 dB GaAs MMIC 1-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 5.0 GHz
Recommended Component Values
C1 - C3
1,000 pF 10%
C4, C5
330 pF 10%
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