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PDF HMC288MS8 Data sheet ( Hoja de datos )
| Número de pieza | HMC288MS8 | |
| Descripción | 2 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR/ 0.7 - 3.7 GHz | |
| Fabricantes | Hittite Microwave Corporation | |
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v00.0600 HMC288MS8
MICROWAVE CORPORATION
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
9
9 - 26
Typical Applications
The HMC288MS8 is ideal for:
• Cellular
• PCS, ISM, MMDS
• WLL applications
Features
2 dB LSB Steps to 14 dB
Single Positive Control Per BIT
Monotonic: ±03 dB Bit Error Typical
Miniature MSOP-8 Package, 14.8mm2
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 1.4 dB
1.3 1.7 dB
1.5 2.0 dB
1.7 2.3 dB
Attenuation Range
0.7 - 3.7 GHz
14 dB
Return Loss (RF1 & RF2, All Atten. States)
0.7 - 1.4 GHz 14 17
1.4 - 2.3 GHz 11 15
2.3 - 2.7 GHz 10 14
2.7 - 3.7 GHz 9 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 0.7 - 3.7 GHz
3V
25 dBm
22 dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0dBm Each Tone)
5V 0.7 - 3.7 GHz
3V
51 dBm
47 dBm
Switching Characteristics
0.7 - 3.7 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
560 ns
600 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
1 page  
MICROWAVE CORPORATION
v00.0600
HMC288MS8
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
J1 - J2
J3 - J6
R1
R2, R3, R4
C1, C2
U1
PCB*
*Circuit Board Material: Rogers 4350
Description
PC Mount SMA Connector
DC Pin
5k Ohm Resistor, 0402 Chip
100 Ohm Resistor, 0402 Chip
0402 Chip Capacitor, Select for Lowest
Frequency of Operation
HMC288MS8 Digital Attenuator
103141 Evaluation PCB 1.5” x 1.5”
9 - 30
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
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HMC288MS8.PDF ] | |
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