MICROWAVE CORPORATION
v00.0600
HMC290
2 dB LSB GaAs MMIC 2-BIT DIGITAL
ATTENUATOR, 0.7 - 4.0 GHz
Features
2 dB LSB Steps to 6 dB
Single Positive Control Per BIT
+/-0.2 dB Typical Bit Error
Miniature SOT 26 Package: 9 mm
2
Typical Applications
The HMC290 is ideal for:
9
ATTENUATORS - SMT
鈥?Cellular
鈥?PCS, ISM, MMDS
鈥?WLL Handset & BaseStation
Functional Diagram
General Description
The HMC290 is a broadband 2 - bit positive control
GaAs IC digital attenuator in a 6 lead SOT26 sur-
face mount plastic package. Covering 0.7 to 4 GHz,
the insertion loss is typically less than 0.7 dB. The
attenuator bit values are 2 (LSB) and 4 dB for a total
attenuation of 6 dB. Accuracy is excellent at 鹵 0.2
dB typical with an IIP3 of up to +52 dBm. Two bit
control voltage inputs, toggled between 0 and +3 to
+5 volts, are used to select each attenuation state
at less than 50 uA each. A single Vdd bias of +3 to
+5 volts applied through an external 5K Ohm resis-
tor is required. Occupying less than 9 mm虜, this is
the smallest 2 - bit digital attenuator available.
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 - 4.0 GHz
0.7 - 4.0 GHz
0.7 - 2.7 GHz
2.7 - 4.0 GHz
16
15
Min.
Typical
0.5
0.5
0.6
0.8
6
20
18
Max.
0.7
0.8
0.9
1.2
Units
dB
dB
dB
dB
dB
dB
dB
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Referenced to Insertion Loss)
2, 4 dB States
6 dB States
Input Power for 0.1 dB Compression
5V
3V
5V
3V
0.7 - 4.0 GHz
0.7 - 4.0 GHz
0.7 - 4.0 GHz
鹵 0.2 + 2% of Atten. Setting Max
鹵 0.3 + 2% of Atten. Setting Max
27
24
52
50
dB
dB
dBm
dBm
dBm
dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.7 - 4.0 GHz
0.7 - 4.0 GHz
400
420
ns
ns
9 - 32
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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