HMC306MS10
/
306MS10E
v06.0206
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.8 GHz
Designer’s Kit
Available
Typical Applications
Features
RoHS-Compliant Product
0.5 dB LSB Steps to 15.5 dB
Single Positive Control Per Bit
± 0.2 dB Typical Bit Error
Miniature 15 mm
2
Package: MSOP10
Included in the HMC-DK004 Designer’s Kit
6
ATTENUATORS - SMT
The HMC306MS10 / HMC306MS10E is ideal for:
• Cellular; UMTS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX
• Microwave Radio & VSAT
• Test Equipment and Sensors
Functional Diagram
General Description
The HMC306MS10 & HMC306MS10E 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
insertion loss is typically less than 1.5 to 2.3 dB.
These attenuators’ 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 ± 0.2 dB typical with an IIP3
of up to +52 dBm. Five bit control voltage inputs, toggled
between 0 and +3 to +5V, are used to select each
attenuation state. A single Vdd bias of +3 to +5V ap-
plied through an external 5K Ohm resistor is required.
Electrical Specifications,
T
A
= +25° C, Vdd= +3V to +5V & VCTL= 0/Vdd (Unless Otherwise Stated)
Parameter
Frequency (GHz)
0.7 - 1.4
1.4 - 2.3
2.3 - 2.7
2.7 - 3.8
Min.
Typical
1.3
1.5
1.8
2.3
15.5
0.7 - 1.4
1.4 - 2.3
2.3 - 2.7
2.7 - 3.8
0.7 - 1.4
1.4 - 2.3
1.4 - 2.3
2.3 - 3.8
Vdd = 5V
Vdd = 3V
Vdd = 5V
Vdd = 3V
0.7 - 3.8
0.7 - 3.8
15
14
13
10
21
18
16
13
Max.
1.6
2.0
2.5
2.7
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
0.5 - 7.5 dB States
8.0 - 15.5 dB States
All Attenuation States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
± (0.30 + 5% of Atten. Setting) Max.
± (0.25 + 3% of Atten. Setting) Max.
± (0.15 + 3% of Atten. Setting) Max.
± (0.30 + 3% of Atten. Setting) Max.
25
23
52
48
0.7 - 3.8
560
600
ns
ns
6 - 60
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
HMC306MS10
/
306MS10E
v06.0206
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.8 GHz
Return Loss RF1, RF2
Insertion Loss
0
-0.5
INSERTION LOSS (dB)
RETURN LOSS (dB)
-1
-1.5
-2
-2.5
-3
-3.5
-4
0.5
+25 C
-40 C
+85 C
(Only Major States are Shown)
0
-5
-10
-15
-20
-25
-30
0.5
0.5 dB
1 dB
2 dB
4 dB
8 dB
14 dB
6
ATTENUATORS - SMT
1
1.5
2
2.5
3
3.5
4
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
FREQUENCY (GHz)
Normalized Attenuation
(Only Major States are Shown)
0
NORMALIZED ATTENUATION (dB)
-2
-4
-6
-8
-10
-12
-14
-16
-18
0.5
0
0.5
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Absolute Bit Error vs. Attenuation State
1.5
1.2
BIT ERROR (dB)
0.9 GHz
1.9 GHz
2.4 GHz
3.5 GHz
0.9
0.6
0.3
1
1.5
2
2.5
3
3.5
4
2
3.5
5
6.5
8
9.5
11
12.5
14
15.5
FREQUENCY (GHz)
ATTENUATION STATE (dB)
Absolute Bit Error vs. Frequency
(Only Major States are Shown)
1.5
Relative Phase vs. Frequency
(Only Major States are Shown)
60
2 dB
4 dB
8 dB
15.5 dB
RELATIVE PHASE (deg.)
1.2
BIT ERROR (dB)
4 dB
8 dB
15.5 dB
40
0.9
0.5, 1, 2 dB
20
0.6
0
0.3
-20
0.5, 1 dB
0
0.5
1
1.5
2
2.5
3
3.5
4
-40
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
FREQUENCY (GHz)
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
6 - 61
HMC306MS10
/
306MS10E
v06.0206
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.8 GHz
Truth Table
Control & Bias Voltages
V3
2 dB
High
High
High
Low
High
High
Low
V4
1 dB
High
High
Low
High
High
High
Low
V5
0.5 dB
High
Low
High
High
High
High
Low
Attenuation
State
RF1 - RF2
Reference I.L.
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Max. Atten.
State
Low
High
0.00.20.2
6
ATTENUATORS - SMT
Control Voltage Input
V1
8 dB
High
High
High
High
High
Low
Low
V2
4 dB
High
High
High
High
Low
High
Low
Bias Condition
0 to +0.2V @ 20 μA Max.
Vdd
±
0.2V @ 20 μA Max.
Note: Vdd = +3V to 5V
±
0.2V
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
Application Circuit
Note:
DC Blocking Capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer
specific frequency to pass with minimal loss. R1= 5K Ohm is required to supply voltage to the circuit through either Pin 6
or Pin 10.
6 - 62
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
HMC306MS10
/
306MS10E
v06.0206
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.8 GHz
Absolute Maximum Ratings
Control Voltage (V1 - V5)
Bias Voltage (Vdd)
Storage Temperature
Operating Temperature
RF Input Power (0.7 - 3.8 GHz)
ESD Sensitivity (HBM)
Vdd + 0.5 Vdc
+8.0 Vdc
-65 to +150 °C
6
ATTENUATORS - SMT
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.
-40 to +85 °C
+28 dBm
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
Package Information
Part Number
HMC306MS10
HMC306MS10E
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
H306
XXXX
H306
XXXX
[3]
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
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
6 - 63
HMC306MS10
/
306MS10E
v06.0206
0.5 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, 0.7 - 3.8 GHz
Evaluation Circuit Board
6
ATTENUATORS - SMT
* R2 - R6= 100 Ohm.
These resistors are optional
and may be used to enhance
decoupling of the RF path
from the control inputs.
List of Materials for Evaluation PCB 103393
[1]
Item
J1 - J2
J3 - J8
R1
R2 - R6
C1 - C2
U1
PCB
[2]
Description
PCB Mount SMA Connector
DC Pin
5k Ohm Resistor, 0402 Pkg.
100 Ohm Resistor, 0402 Pkg.
0402 Chip Capacitor, Select Value for Lowerst
Frequency
HMC306MS10 / HMC306MS10E
Digital Attenuators
103391 Evaluation PCB 1.5” x 1.5”
The circuit board used in the final 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.
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
6 - 64
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
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