MICROWAVE CORPORATION
v01.0701
HMC230MS8
4 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.75 - 2.0 GHz
Features
4 dB LSB Steps to 28 dB
Single Positive Control Per Bit
+/- 0.5 dB Typical Bit Error
Pin - For - Pin Replacement to
AA100-59 Digital Attenuator
Typical Applications
The HMC230MS8 is ideal for:
9
ATTENUATORS - SMT
鈥?Cellular
鈥?PCS, ISM, MMDS
鈥?WLL Handset
鈥?Base Station Infrastructure
Functional Diagram
General Description
The HMC230MS8 is a broadband 3 - bit positive
control GaAs IC digital attenuator in an 8 lead MSOP
surface mount plastic package. Covering 0.75 to
2 GHz, the insertion loss is typically less than 2
dB. The attenuator bit values are 4 (LSB), 8, and
16 dB for a total attenuation of 28 dB. Accuracy is
excellent at 鹵 0.5 dB typical with an IIP3 of up to
+48 dBm. Three 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 resistor is required.
Electrical Speci鏗乧ations,
T
A
= +25擄 C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated)
Parameter
Insertion Loss
Attenuation Range
Return Loss (RF1 & RF2, All Atten. States)
Attenuation Accuracy: (Reference to Insertion Loss)
4, 8, 12, 16, 20 dB States
24, 28 dB States
All Attenuation States
Input Power for 0.1 dB Compression
5V
3V
5V
3V
0.75 - 1.4 GHz
0.75 - 1.4 GHz
1.40 - 2.0 GHz
0.75 - 2.0 GHz
鹵 0.3 + 3% of Atten. Setting Max
鹵 0.4 + 6% of Atten. Setting Max
鹵 0.3 + 3% of Atten. Setting Max
20
19
46
45
dB
dB
dB
dBm
dBm
dBm
dBm
Frequency
0.75 - 1.7 GHz
1.7 - 2.0 GHz
0.75 - 2.0 GHz
0.75 - 1.7 GHz
1.7 - 2.0 GHz
10
13
Min.
Typical
1.6
1.8
28
13
16
Max.
1.8
2.1
Units
dB
dB
dB
dB
dB
Input Third Order Intercept
(Two-Tone Input Power = 0 dBm Each)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
0.75 - 2.0 GHz
0.75 - 2.0 GHz
560
600
ns
ns
9-8
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
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