2dB LSB GaAs MMIC
ATTENUATORS - SMT
5
5 - 34
HMC288MS8 / 288MS8E
v01.0705
2 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
...
Description
ATTENUATORS - SMT
5
5 - 34
HMC288MS8 / 288MS8E
v01.0705
2 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
Typical Applications
Features
The HMC288MS8 / HMC288MS8E is ideal for:
2 dB LSB Steps to 14 dB
Cellular
Single Positive Control Per BIT
PCS, ISM, MMDS
Monotonic: ±03 dB Bit Error Typical
WLL applications
LETE Functional Diagram
Miniature MSOP-8 Package, 14.8mm2
General Description
The HMC288MS8 & HMC288MS8E are broadband 3-bit positive control GaAs IC digital attenuators in 8 lead MSOP surface mount plastic packages. 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.
O Electrical Specifications,
TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
S Parameter
Frequency
Min.
Typical
Insertion Loss
0.7 - 1.4 GHz
1.0
1.4 - 2.3 GHz
1.3
2.3 - 2.7 GHz
1.5
2.7 - 3.7 GHz
1.7
B Attenuation Range
0.7 - 3.7 GHz
14
O 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
Max.
1.4 1.7 2.0 2.3
Units
dB dB...
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