MICROWAVE CORPORATION
v00.0600
HMC288MS8
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
Features
2 dB LSB Steps to 14 dB
Single Positive Control Per BIT
Monotonic: 鹵03 dB Bit Error Typical
Miniature MSOP-8 Package, 14.8mm
2
Typical Applications
The HMC288MS8 is ideal for:
9
ATTENUATORS - SMT
鈥?Cellular
鈥?PCS, ISM, MMDS
鈥?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 鹵 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 mm虜.
Electrical Speci鏗乧ations,
T
A
= +25擄 C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
Parameter
Insertion Loss
Frequency
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
0.7 - 3.7 GHz
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
14
11
10
9
Min.
Typical
1.0
1.3
1.5
1.7
14
17
15
14
12
Max.
1.4
1.7
2.0
2.3
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
All Attenuation States
All Attenuation States
All Attenuation States
Input Power for 0.1 dB Compression
5V
3V
5V
3V
0.7 - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 3.7 GHz
0.7 - 3.7 GHz
鹵 0.3 + 3% of Atten. Setting Max
鹵 0.2 + 3% of Atten. Setting Max
鹵 0.3 + 3% of Atten. Setting Max
鹵 0.3 + 4% of Atten. Setting Max
25
22
51
47
dB
dB
dB
dB
dBm
dBm
dBm
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.7 - 3.7 GHz
0.7 - 3.7 GHz
560
600
ns
ns
9 - 26
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
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