Hittite HMC307QS16G 1db lsb gaas mmic 5-bit digital attenuator, dc - 4 ghz Datasheet

HMC307QS16G / 307QS16GE
v07.0505
ATTENUATORS - SMT
6
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Typical Applications
Features
The HMC307QS16G / HMC307QS16GE 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 & HMC307QS16GE are broadband 5-bit GaAs IC digital attenuators in 16 lead
QSOP grounded base surface mount plastic packages. 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
Frequency
Min.
Insertion Loss
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
Attenuation Range
DC - 4.0 GHz
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
Attenuation Accuracy: (Referenced to Insertion Loss)
1 - 20 dB States
21 - 31 dB States
1 - 15 dB States
16 - 31 dB States
Typical
Max.
Units
1.8
1.9
2.0
2.1
2.2
2.4
2.5
2.7
dB
dB
dB
dB
31
dB
15
17
18
15
dB
dB
dB
dB
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
DC - 4.0 GHz
140
160
ns
ns
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
6 - 66
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
HMC307QS16G / 307QS16GE
v07.0505
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Return Loss RF1, RF2
(Only Major States are Shown)
0
0
-0.5
-5
6
31 dB
-1.5
-2
-2.5
+25
-40
+85
-3
8 dB
16 dB
-10
-15
-20
-25
-30
1 dB
-3.5
-35
-4
-40
2, 4 dB
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0.5
1
1.5
FREQUENCY (GHz)
Normalized Attenuation
2.5
3
4
2
0
-5
3.5 GHz
1.5
BIT ERROR (dB)
-10
-15
-20
1 dB
2 dB
4 dB
-25
8 dB
16 dB
31 dB
2.4 GHz
0.1 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)
100
RELATIVE PHASE (deg.)
2
1.5
BIT ERROR (dB)
3.5
Absolute Bit Error
vs. Attenuation State
(Only Major States are Shown)
NORMALIZED ATTENUATION (dB)
2
FREQUENCY (GHz)
ATTENUATORS - SMT
-1
RETURN LOSS (dB)
INSERTION LOSS (dB)
Insertion Loss
31 dB
1
16 dB
1, 2 & 4 dB
0.5
8 dB
80
31 dB
60
40
16 dB
8 dB
4 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:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
6 - 67
HMC307QS16G / 307QS16GE
v07.0505
Control Voltage
ATTENUATORS - SMT
6
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Truth Table
State
Bias Condition
Low
0 to -3V @ 70 uA Typ.
High
Vee + 0.8V @ 5 uA Typ.
Control Voltage Input
V1
16 dB
Note: Vee = -5V ± 10%
Bias Voltage & Current
Vee Range = -5.0 Vdc ± 10%
Vee
(VDC)
lee (Typ.)
(mA)
lee (Max.)
(mA)
-5.0
3
6
V2
8 dB
V3
4 dB
V4
2 dB
V5
1 dB
Attenuation
State
RF1 - RF2
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
High
High
High
High
High
31 dB
Max. Atten.
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.
6 - 68
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
HMC307QS16G / 307QS16GE
v07.0505
1dB 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
6
ATTENUATORS - SMT
Control Voltage (V1 - V5)
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
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.
Package Information
Part Number
Package Body Material
Lead Finish
MSL Rating
HMC307QS16G
Low Stress Injection Molded Plastic
Sn/Pb Solder
MSL1
HMC307QS16GE
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL1
Package Marking [3]
[1]
HMC307
XXXX
[2]
HMC307
XXXX
[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 - 69
HMC307QS16G / 307QS16GE
v07.0505
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Evaluation Circuit Board
ATTENUATORS - SMT
6
* 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 103397 [1]
Item
Description
J1 - J2
PCB 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 / HMC307QS16GE
Digital Attenuator
PCB [2]
103395 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 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.
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
6 - 70
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
HMC307QS16G / 307QS16GE
v07.0505
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
Notes:
ATTENUATORS - SMT
6
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 - 71
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