HITTITE HMC307QS16G

MICROWAVE CORPORATION
v06.0503
HMC307QS16G
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
ATTENUATORS - SMT
9
Typical Applications
Features
The HMC307QS16G is ideal for:
1 dB LSB Steps to 31 dB
• Cellular
Single Control Line Per Bit
• PCS, ISM, MMDS
+/- 0.5 dB Typical Bit Error
• Wireless Local Loop
Miniature QSOP-16 Package: 29.4 mm2
Functional Diagram
General Description
The HMC307QS16G is a broadband 5-bit GaAs IC
digital attenuator in a 16 lead QSOP grounded base
surface mount plastic package. Covering DC to 4
GHz, the insertion loss is less then 2 dB typical. The
attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB
for a total attenuation of 31 dB. Attenuation accuracy is excellent at ± 0.5 dB typical with an IIP3 of up
to +44 dBm. Five bit control voltage inputs, toggled
between 0 and -5V, are used to select each attenuation state at less than 50 uA each. A single Vee bias
of -5V allows operation down to DC. This product is
an excellent alternative to the HMC235QS16G.
Electrical Specifications, TA = +25° C, Vee = -5V & VCTL= 0/Vee
Parameter
Min.
Typical
Max.
Units
2.2
2.4
2.5
2.7
dB
dB
dB
dB
Insertion Loss
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
1.8
1.9
2.0
2.1
Attenuation Range
DC - 4.0 GHz
31
dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
11
11
10
8
15
17
18
15
dB
dB
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
1 - 20 dB States
21 - 31 dB States
1 - 15 dB States
16 - 31 dB States
DC - 2.7 GHz
DC - 2.7 GHz
2.7 - 4.0 GHz
2.7 - 4.0 GHz
± 0.2 + 3% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.6 + 10% of Atten. Setting Max
dB
dB
dB
dB
Input Power for 0.1 dB Compression
0.5 - 4.0 GHz
24
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
0.5 - 4.0 GHz
44
dBm
Switching Characteristics
DC - 4.0 GHz
140
160
ns
ns
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
9 - 50
Frequency
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
HMC307QS16G
v06.0503
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Return Loss RF1, RF2
SUB-HARMONICALLY (Only
PUMPED
MIXER
17 - 25 GHz
Major States
are Shown)
0
0
-0.5
-5
+25 C
8 dB
31 dB
-1.5
-2
-2.5
+85 C
9
16 dB
-10
-15
-20
-25
-3
-30
-3.5
-35
-4
-40
1 dB
2, 4 dB
0
0.5
1
1.5
2
2.5
3
3.5
0
4
0.5
1
1.5
2.5
3
(Only Major States are Shown)
0
4
2
-5
4 dB
1 dB
2 dB
8 dB
BIT ERROR (dB)
1.5
-10
-15
-20
16 dB
31 dB
-25
3.5 GHz
0.1 GHz
2.4 GHz
1
1.9 GHz
0.9 GHz
0.5
-30
-35
0
0
0.5
1
1.5
2
2.5
3
3.5
4
1
4
7
10
FREQUENCY (GHz)
13
16
19
22
25
28
31
ATTENUATION STATE (dB)
Absolute Bit Error vs. Frequency
Relative Phase vs. Frequency
(Only Major States are Shown)
(Only Major States are Shown)
2
100
80
RELATIVE PHASE (deg.)
31 dB
1.5
BIT ERROR (dB)
3.5
Absolute Bit Error
vs. Attenuation State
Normalized Attenuation
NORMALIZED ATTENUATION (dB)
2
FREQUENCY (GHz)
FREQUENCY (GHz)
ATTENUATORS - SMT
-40 C
-1
RETURN LOSS (dB)
INSERTION LOSS (dB)
GaAs
MMIC
Insertion
Loss
16 dB
1, 2 & 4 dB
1
8 dB
0.5
31 dB
60
8 dB
4 dB
40
16 dB
20
0
1, 2 dB
0
-20
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
3
3.5
4
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
9 - 51
MICROWAVE CORPORATION
HMC307QS16G
v06.0503
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Truth Table
Control Voltage
Control Voltage Input
ATTENUATORS - SMT
9
Attenuation
State
RF1 - RF2
State
Bias Condition
Low
0 to -3V @ 70 uA Typ.
High
Vee + 0.8V @ 5 uA Typ.
V1
16 dB
V2
8 dB
V3
4 dB
V4
2 dB
V5
1 dB
Low
Low
Low
Low
Low
Reference I.L.
Low
Low
Low
Low
High
1 dB
Low
Low
Low
High
Low
2 dB
Low
Low
High
Low
Low
4 dB
Low
High
Low
Low
Low
8 dB
High
Low
Low
Low
Low
16 dB
Vee
(VDC)
lee (Typ.)
(mA)
lee (Max.)
(mA)
High
High
High
High
High
31 dB
Max. Atten.
-5.0
3
6
Note: Vee = -5V ± 10%
Bias Voltage & Current
Vee Range = -5.0 Vdc ± 10%
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
Application Circuit
DC Blocking Capacitors C1 & C2 are
required on RF1 & RF2. Choose C1 = C2 =
100 pF ~ 0.1 uF 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 11
or Pin 14.
Suggested Driver Circuit
(One Circuit Required Per Bit Control Input)
Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. * Recommended value
to suppress unwanted RF signals at V1 - V5 control lines.
9 - 52
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
HMC307QS16G
v06.0503
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Absolute Maximum Ratings
Vee - 0.5 Vdc
Bias Voltage (Vee)
-7.0 Vdc
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
RF Input Power (0.5 - 4 GHz)
+26 dBm
9
ATTENUATORS - SMT
Control Voltage (V1 - V5)
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEADFRAME MATERIAL: COPPER ALLOY
3. LEADFRAME PLATING: Sn/Pb SOLDER
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
9 - 53
v06.0503
MICROWAVE CORPORATION
HMC307QS16G
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Evaluation Circuit Board
ATTENUATORS - SMT
9
* R2 - R6 = 100 Ohm.
These resistors are optional
and may be used to enhance
decoupling of the RF path
from the control inputs.
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 and exposed paddle 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 Material
Item
Description
J1 - J2
PC Mount SMA Connector
J3 - J9
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 of Operation
U1
HMC307QS16G Digital Attenuator
PCB*
103395 Evaluation PCB 1.5” x 1.5”
*Circuit Board Material: Rogers 4350
9 - 54
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
v06.0503
MICROWAVE CORPORATION
HMC307QS16G
1 dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Notes:
ATTENUATORS - SMT
9
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
9 - 55