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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
General Description
Features
Functional Diagram
RoHs Compliant Product
1 dB LSB Steps to 31 dB
Single Positive Control Per BIT
+/- 0.2 dB Typical Bit Error
Miniature MSOP 10 Package: 14.8mm
2
Electrical Specifications,
T
A
= +25 C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
Typical Applications
The HMC273MS10G & HMC273MS10GE are gen-
eral purpose broadband 5-Bit positive control GaAs
IC digital attenuators in 10 lead MSOP plastic pack-
ages. Covering 0.7 to 3.7 GHz, the insertion loss is
typically less than 2.5 dB. The attenuator bit values
are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation
of 31 dB. Accuracy is excellent at 0.2 dB typical
with an IIP3 of up to +48 dBm. Five bit control voltage
inputs, toggled between 0 and +3 to +5 volts, are used
to select each attenuation state. A single Vdd bias of
+3 to +5 volts applied through an external 5K Ohm
resistor is required.
The HMC273MS10G / HMC273MS10GE is ideal for:
Cellular; UMTS/3G Infrastructure
ISM, MMDS, WLAN, WiMAX
Microwave Radio & VSAT
Test Equipment and Sensors
Parameter
Frequency
Min.
Typical
Max.
Units
Insertion Loss
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
1.8
2.3
2.8
3.5
2.4
2.9
3.4
4.2
dB
dB
dB
dB
Attenuation Range
0.7 - 3.7 GHz
31
dB
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
1.4 - 2.7 GHz
2.7 - 3.7 GHz
11
12
10
17
20
14
dB
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
All Attenuation States
All Attenuation States
All Attenuation States
0.7 - 1.4 GHz
1.4 - 2.2 GHz
2.2 - 2.7 GHz
2.7 - 3.7 GHz
(0.30 + 3% of Atten. Setting) Max
(0.30 + 4% of Atten. Setting) Max
(0.40 + 5% of Atten. Setting) Max
(0.50 + 5% of Atten. Setting) Max
dB
dB
dB
dB
Input Power for 0.1 dB Compression
Vdd = 5V
Vdd = 3V
0.7 - 3.7 GHz
27
22
dBm
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Vdd = 5V
Vdd = 3V
0.7 - 3.7 GHz
48
46
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.7 - 3.7 GHz
560
600
ns
ns
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
HMC273MS10G
/
273MS10GE
v03.0205
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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
-5
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
4
+25 C
+85 C
-40 C
INSERTION LOSS (dB)
FREQUENCY (GHz)
Bit Error vs. Attenuation State
Return Loss RF1, RF2
(Only Major States are Shown)
Insertion Loss vs. Temperature
Normalized Attenuation
(Only Major States are Shown)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0
4
8
12
16
20
24
28
32
BI
T ERROR (dB)
ATTENUATION STATE (dB)
0.9 GHz
1.9 GHz
2.4 GHz
3.5 GHz
-30
-25
-20
-15
-10
-5
0
0.5
1
1.5
2
2.5
3
3.5
4
RETURN LOSS (dB)
FREQUENCY (GHz)
1 dB
IL
2 dB
4 dB
8 dB
16 dB
31 dB
-35
-30
-25
-20
-15
-10
-5
0
0.5
1
1.5
2
2.5
3
3.5
4
NORMALI
ZED ATTENUATI
ON (dB)
FREQUENCY (GHz)
Note: All Data Typical Over Voltage (+3V to +5V)
Bit Error vs. Frequency
(Only Major States are Shown)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0.5
1
1.5
2
2.5
3
3.5
4
BI
T ERROR (dB)
FREQUENCY (GHz)
1,4,8 dB
31 dB
2 dB
16 dB
-40
-20
0
20
40
60
80
100
0.5
1
1.5
2
2.5
3
3.5
4
RELATIVE PHASE (deg)
FREQUENCY (GHz)
1,2,4,8 dB
16 dB
31 dB
Relative Phase vs. Frequency
(Only Major States are Shown)
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
HMC273MS10G
/
273MS10GE
v03.0205
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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
Control Voltages
Truth Table
Application Circuit
DC blocking capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer specifi c
frequency to pass with minimal loss. R1 = 5K Ohm is required to supply voltage to the circuit through either PIN 6 or PIN 10.
Control Voltage Input
Attenuation
Setting
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
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 +0.2 V @ 20 uA Max
High
Vdd 0.2V @ 100 uA Max
Note: Vdd = +3V to 5V 0.2V
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
0.5
1
1.5
2
2.5
3
3.5
4
STEP ERROR (dB)
FREQUENCY (GHz)
Worst Case Step Error
Between Successive Attenuation States
v03.0205
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
HMC273MS10G
/
273MS10GE
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
Control Voltage (V1 - V5)
Vdd + 0.5 Vdc
Bias Voltage (Vdd)
+8.0 Vdc
Channel Temperature
150 C
Continuous Pdiss (T=85C)
(derate 6mW/C above 85C)
0.4 W
Thermal Resistance
163 C/W
Storage Temperature
-65 to +150 C
Operating Temperature
-40 to +85 C
RF Input Power (0.7 - 3.7 GHz)
+30 dBm
ESD Sensitivity (HBM)
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
v03.0205
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.
Part Number
Package Body Material
Lead Finish
MSL Rating
Package Marking
[3]
HMC273MS10G
Low Stress Injection Molded Plastic
Sn/Pb Solder
MSL1
[1]
H273
XXXX
HMC273MS10GE
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL1
[2]
H273
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
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
HMC273MS10G
/
273MS10GE
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
Evaluation Circuit Board
The circuit board used in the fi nal application
should use RF circuit design techniques. Signal
lines should have 50 ohm impedance while the
package ground leads and exposed ground paddle
should be connected directly to the ground plane
similar to that shown below. A suffi cient number
of VIA holes should be used to connect the top
and bottom ground planes. The evaluation circuit
board as shown is available from Hittite Microwave
Corporation upon request.
List of Materials for Evaluation PCB 103393
[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 - J6
DC Pin
R1
5k Ohm Resistor, 0402 Chip
R2, R3, R4
100 Ohm Resistor, 0402 Chip
C1, C2
0402 Chip Capacitor, Select for Lowest
Frequency of Operation
U1
HMC273MS10G / HMC273MS10GE
Digital Attenuator
PCB
[2]
103391 Evaluation PCB 1.5" x 1.5"
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
v03.0205
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
HMC273MS10G
/
273MS10GE
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