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ATTENUATORS - SMT
5
5 - 190
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
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
General Description
Features
Functional Diagram
The HMC603MS10 & HMC603MS10E are general
purpose broadband 5-bit positive control GaAs IC
digital attenuators in 10 lead MSOP surface mount
plastic packages. Covering 0.7 to 3.8 GHz, the inser-
tion loss is less than 2.0 dB typical. The attenuator
bit values are 0.5 (LSB), 1, 2, 4 and 8 dB for a total
attenuation of 15.5 dB. Attenuation accuracy is
excellent at ± 0.15 dB typical with an IIP3 of +50 dBm.
Five bit control voltage inputs, toggled between 0
and +3 to +5V, are used to select each attenuation
state at less than 1.0 uA each. A single Vdd bias
of +3 to +5V applied through an external 5K Ohm
resistor is required.
0.5 dB LSB Steps to 15.5 dB
Single Positive Control Per Bit
± 0.15 dB Typical Bit Error
High Input IP3: +50 dBm
MSOP10 SMT Package
Electrical Speci cations,
TA = +25° C, Vdd= +3V to +5V & Vctl= 0/Vdd (Unless Otherwise Stated)
Typical Applications
The HMC603MS10 / HMC603MS10E is ideal for:
• Cellular/3G Infrastructure
• ISM, MMDS
• WLAN, WiMAX, & WiBro
Parameter Frequency (GHz) Min. Typical Max. Units
Insertion Loss
0.7 - 1.4
1.4 - 2.3
2.3 - 2.7
2.7 - 3.8
1.3
1.7
2.2
2.7
1.6
2.0
2.5
3.1
dB
dB
dB
dB
Attenuation Range 15.5 dB
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4
1.4 - 2.3
2.3 - 2.7
2.7 - 3.8
25
18
13
12
dB
dB
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All States 0.7 - 2.2
2.2 - 3.8
± (0.2 + 2% of Atten. Setting) Max.
± (0.3 + 3% of Atten. Setting) Max.
dB
dB
Input Power for 0.1 dB Compression Vdd = 5V
Vdd = 3V 0.7 - 3.8 29
28
dBm
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
REF - 2 dB States
2.5 - 15.5 dB States 0.7 - 3.8 53
48
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.7 - 3.8 1.6
1.6
µs
µs
HMC603MS10 / 603MS10E
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ATTENUATORS - SMT
5
5 - 191
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)
Bit Error vs. Attenuation State
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)
HMC603MS10 / 603MS10E
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-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)
-0.3
-0.1
0.1
0.3
0.5
0.5 3.5 6.5 9.5 12.5 15.5
BIT ERROR (dB)
ATTENUATION STATE (dB)
0.9 GHz 1.9 GHz
3.5 GHz 2.4 GHz
-18
-15
-12
-9
-6
-3
0
0.5 1 1.5 2 2.5 3 3.5 4
NORMALIZED ATTENUATION (dB)
FREQUENCY (GHz)
-40
-20
0
20
40
0.5 1 1.5 2 2.5 3 3.5 4
RELATIVE PHASE (deg)
FREQUENCY (GHz)
0.5, 1, 2 dB
4 dB
8 dB
15.5 dB
-0.6
-0.3
0
0.3
0.6
0.5 1 1.5 2 2.5 3 3.5 4
BIT ERROR (dB)
FREQUENCY (GHz)
15.5 dB
8 dB
2 dB
1 dB
4 dB
0.5 dB
-30
-25
-20
-15
-10
-5
0
0.5 1 1.5 2 2.5 3 3.5 4
RETURN LOSS (dB)
FREQUENCY (GHz)
I.L
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
ATTENUATORS - SMT
5
5 - 192
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
v00.0905
Application Circuit
Truth Table
Control & Bias Voltages
Note:
DC Blocking Capacitors C1 & C2 are required on RF1
& RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest
customer speci 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
State
RF1 - RF2
V1
8 dB
V2
4 dB
V3
2 dB
V4
1 dB
V5
0.5 dB
High High High High High Reference I.L.
High High High High Low 0.5 dB
High High High Low High 1 dB
High High Low High High 2 dB
High Low High High High 4 dB
Low High High High High 8 dB
Low Low Low Low Low 15.5 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 +0.2V @ 1.0 µA Max.
High Vdd ± 0.2V @ 0.5 µA Max.
Note: Vdd = +3V to +5V ± 0.00.20.20.2V
Worst Case Step Error
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.5 1 1.5 2 2.5 3 3.5 4
STEP ERROR (dB)
FREQUENCY (GHz)
HMC603MS10 / 603MS10E
Bias Voltage & Current
Vdd = +5.0 Vdc ± 10%
Vdd
(VDC)
Idd (Typ.)
(µA)
+3.0 4.0
+5.0 5.0
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
ATTENUATORS - SMT
5
5 - 193
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
v00.0905
Outline Drawing
Absolute Maximum Ratings
RF Input Power (0.7 - 3.8 GHz) +30 dBm
Control Voltage (V1 - V5) Vdd + 0.5 Vdc
Bias Voltage (Vdd) +8.0 Vdc
Channel Temperature 150 °C
Thermal Resistance 182 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC603MS10 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H603
XXXX
HMC603MS10E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H603
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
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 MUST BE SOLDERED TO PCB RF GROUND.
HMC603MS10 / 603MS10E
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
ATTENUATORS - SMT
5
5 - 194
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
v00.0905
HMC603MS10 / 603MS10E
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
Pin Descriptions
Pin Number Function Description Interface Schematic
1 - 5 V1 - V5 See truth table and control voltage table.
6RF2
This pin is DC coupled and matched to 50 Ohm.
A blocking capacitor is required.
7 - 9 GND These pins must be DC grounded.
10 RF1 This pin is DC coupled and matched to 50 Ohm.
A blocking capacitor is required.
ATTENUATORS - SMT
5
5 - 195
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
v00.0905
Evaluation Circuit Board
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 should be connected 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 112747 [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 - J8 DC Pin
R1 5k Ohm Resistor, 0402 Pkg.
R2 - R6 100 Ohm Resistor, 0402 Pkg.
C1 - C2 0402 Chip Capacitor, Select Value for Lowest
Frequency
U1 HMC603MS10 / HMC603MS10E
Digital Attenuators
PCB [2] 112746 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC603MS10 / 603MS10E
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz
