HMC288MS8 [HITTITE]
2 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz; 2分贝LSB的GaAs MMIC 3位数字衰减器， 0.7 - 3.7 GHz的
| 型号： | HMC288MS8 |
| 厂家： | 
HITTITE MICROWAVE CORPORATION |
| 描述： | 2 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz |
| 文件： | 总6页 (文件大小：161K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HMC288MS8
v00.0600
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Typical Applications
Features
The HMC288MS8 is ideal for:
• Cellular
2 dB LSB Steps to 14 dB
Single Positive Control Per BIT
Monotonic: ±03 dB Bit Error Typical
Miniature MSOP-8 Package, 14.8mm2
9
• PCS, ISM, MMDS
• WLL applications
Functional Diagram
General Description
The HMC288MS8 is a broadband 3-bit positive con-
trol GaAs IC digital attenuator in an 8 lead MSOP
surface mount plastic package. Covering 0.7 to 3.7
GHz, the insertion loss is typically less than 1.2 to
1.8 dB. The attenuator bit values are 2 (LSB), 4,
and 8 dB for a total attenuation of 14 dB. Accuracy
is excellent at ± 0.3 dB typical with an IIP3 of up to
+51 dBm. Three bit control voltage inputs, toggled
between 0 and +3 to +5V, are used to select each
attenuation state at less than 50 uA each. A single
Vdd bias of +3 to +5V applied through an external
5K Ohm resistor is required while occupying less
than 14.8 mm².
Electrical Specifications,
TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
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
1.0
1.3
1.5
1.7
1.4
1.7
2.0
2.3
dB
dB
dB
dB
Attenuation Range
0.7 - 3.7 GHz
14
dB
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
14
11
10
9
17
15
14
12
dB
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 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
± 0.3 + 3% of Atten. Setting Max
± 0.2 + 3% of Atten. Setting Max
± 0.3 + 3% of Atten. Setting Max
± 0.3 + 4% of Atten. Setting Max
dB
dB
dB
dB
Input Power for 0.1 dB Compression
5V
3V
0.7 - 3.7 GHz
0.7 - 3.7 GHz
0.7 - 3.7 GHz
25
22
dBm
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0dBm Each Tone)
5V
3V
51
47
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
560
600
ns
ns
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 - 26
HMC288MS8
v00.0600
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Return Loss RF1, RF2
(Only Major States are Shown)
Insertion Loss
0
0
-40 C
-0.5
+25 C
-5
9
-1
-1.5
-2
2 dB
14 dB
-10
-15
+85 C
-2.5
-3
-20
-25
-3.5
-4
4 dB
8 dB
0.5
1
1.5
2
2.5
3
3.5
4
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
FREQUENCY (GHz)
Absolute Bit Error
Normalized Attenuation
(Only Major States are Shown)
vs. Attenuation State
0
-2
-4
1.5
1.2
3.5 GHz
-6
-8
2 dB
4 dB
0.9
0.9 GHz
1.9 GHz
2.4 GHz
0.6
-10
-12
-14
-16
14 dB
8 dB
0.3
0
0.5
1
1.5
2
2.5
3
3.5
4
2
4
6
8
10
12
14
FREQUENCY (GHz)
ATTENUATION STATE (dB)
Absolute Bit Error vs. Frequency
(Only Major States are Shown)
Relative Phase vs. Frequency
(Only Major States are Shown)
1.5
1.2
60
8 dB
14 dB
40
0.9
14 dB
2 dB
20
0
8 dB
0.6
4 dB
0.3
4 dB
2 dB
0
-20
0.5
0.5
1
1.5
2
2.5
3
3.5
4
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
FREQUENCY (GHz)
Note: All Data Typical Over Voltage (+3V to +5V) & Temperature (-40 to +85 deg. C.).
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 - 27
HMC288MS8
v00.0600
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Truth Table
Control & Bias Voltages
Control Voltage Input
State
Bias Condition
Attenuation
Setting
RF1 - RF2
V1
V2
4 dB
V3
2 dB
Low
0 to +0.2V @ 20 uA Max.
Vdd ± 0.2V @ 50 uA Max
8 dB
9
High
Reference
I.L.
High
High
High
Note: Vdd = +3V to 5V ± 0.2V
High
High
Low
High
Low
High
Low
High
High
2 dB
4 dB
8 dB
14 dB
Max. Atten.
Low
Low
Low
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 ~ 300 pF to allow lowest customer specific
frequency to pass with minimal loss. R1 = 5K Ohm is required to supply voltage to the circuit throught either PIN 5 or PIN 8.
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 - 28
HMC288MS8
v00.0600
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Absolute Maximum Ratings
Control Voltage (V1, V2, V3)
Vdd + 0.5 Vdc
Bias Voltage (Vdd)
+8.0 Vdc
9
Storage Temperature
-65 to +150 °C
-40 to +85 °C
+28 dBm
Operating Temperature
RF Input Power (0.7 - 4 GHz)
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 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 - 29
HMC288MS8
v00.0600
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Evaluation Circuit Board
9
* R2 = R3 = R4 = 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 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 as shown is available from Hittite Microwave Corporation upon request.
List of Material
Item
Description
J1 - J2
J3 - J6
R1
PC Mount SMA Connector
DC Pin
5k Ohm Resistor, 0402 Chip
100 Ohm Resistor, 0402 Chip
R2, R3, R4
0402 Chip Capacitor, Select for Lowest
Frequency of Operation
C1, C2
U1
HMC288MS8 Digital Attenuator
103141 Evaluation PCB 1.5” x 1.5”
PCB*
*Circuit Board Material: Rogers 4350
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 - 30
HMC288MS8
v00.0600
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Notes:
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 - 31
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