HMC173MS8
MICROWAVE CORPORATION
GaAs MMIC VOLTAGE VARIABLE ATTENUATOR 800-2000 MHz
FEBRUARY 2001
General Description
Features
The HMC173MS8 is a miniature absorp-
tive voltage variable attenuator in an 8-
lead MSOP package. The device oper-
ates with a positive supply voltage, and a
positive control voltage. Unique features
include a high dynamic attenuation range,
andexcellentpowerhandlingperformance
through all attenuation states. The
HMC173MS8 is ideal for operation in wire-
less applications between 800 MHz and
1600 MHz. 1.7 to 2.0 GHz operation is
possible, with a reduced maximum attenu-
ation of 30 dB and increased VSWR. The
HMC173MS8 can be used with an exter-
nal driver circuit for improved linearity of
attenuation.
SINGLE POSITIVE VOLTAGE CONTROL: 0 to +3V
HIGH ATTENUATION RANGE: >50 dB @ 0.9 GHz
HIGH P1dB COMPRESSION POINT: +16 dBm
ULTRA SMALL PACKAGE: MSOP
2
Guaranteed Performance Vdd = +4.0 Vdc, 50 Ohm System, -40 to +85°C
Parameter
Min
Typical
Max
Units
Insertion Loss (Min. Atten.)
(VCTL = 0.0 Vdc)
800-1000 MHz
1000-1600 MHz
1600-2000 MHz
1.8
2.6
3.2
2.3
3.1
3.7
dB
dB
dB
Attenuation Range
(VCTL = 0 to +3 V)
800-1000 MHz
1000-1600 MHz
1600-2000 MHz
45
27
25
52
32
30
dB
dB
dB
Flatness
(Peak to Peak)
800-1000 MHz
1000-1600 MHz
± 0.15
± 0.25
dB
dB
Return Loss
(VCTL = 0 to +3 V)
800-1000 MHz
1000-1600 MHz
1600-2000 MHz
6
5
5
12
8
7
dB
dB
dB
Input Power for 0.1 dB Compression
(825 MHz)
Min Atten.
Atten.>2.0
19
9
dBm
dBm
Input Power for 1.0 dB Compression
(825 MHz)
Min Atten.
Atten.>2.0
21
10
25
16
dBm
dBm
Input Third Order Intercept
825 MHz, two tones @ +5.0 dBm
Min Atten.
Atten.>2.0
30
15
37
21
dBm
dBm
Switching Characteristics
t
, tFALL (10/90% RF)
800-2000 MHz
1.0
1.2
µS
µS
tORINS,EtOFF (50% CTL to 10/90% RF)
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343
Fax: 978-250-3373
Web Site: www.hittite.com
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