HMC235QS16G
MICROWAVE CORPORATION
GaAs MMIC SMT 5 - BIT DIGITAL ATTENUATOR DC - 4 GHz
F
EBRUARY
2001
Features
WIDE BANDWIDTH: DC - 4 GHz
ATTENUATION BITS: 1, 2, 4, 8, 16 dB
MINIATURE QSOP-16 PACKAGE
General Description
The HMC235QS16G is a broadband 5-bit
digital attenuator in a 16 - lead (narrow
pitch) surface mount QSOP plastic pack-
age with an exposed ground slug. This
package occupies the same area as an 8
lead SOIC package. The 1, 2, 4 and 8 dB
bits have less than 10 degrees relative
phase shift. The five primary attenuation
states can be activated independently, or
collectively for attenuation levels of 1 to 31
dB. The HMC235QS16G is ideal for cellu-
lar, PCS, WLL, LMDS and IF
applications.This is the smallest 5 bit digi-
tal attenuator available.
Min.
Typ.
5.0
5.3
25
7
4
10
7
0.5
1.4
3.2
7.0
14.0
26.0
0.5
1.3
3.2
7.0
14.0
25.0
31
12
7
18
11
1
2
4
8
16
31
1
2
4
8
16
31
3
6
8
7
18
7
24
23
38
22
12
11
24
12
28
30
44
32
1.5
2.6
4.8
9.0
17.9
35.0
1.5
2.7
4.8
9.0
17.9
35.0
Max.
5.4
6.0
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
2
SMT A
TTENUATORS
Guaranteed Performance
With 0/-5V Control, -40 to +85 deg C
Parameter
Insertion Loss
Attenuation Range
Input Return Loss (All States)
Output Return Loss (All States)
Attenuation Accuracy:
1 dB Bit
2 dB Bit
4 dB Bit
8 dB Bit
16 dB Bit
All Bits (31 dB)
Attenuation Accuracy:
1 dB Bit
2 dB Bit
4 dB Bit
8 dB Bit
16 dB Bit
All Bits (31 dB)
Switching Characteristics
tRISE, tFALL (10/90%)
tON, tOFF (50% CTL to 10/90% RF)
Input Power for 0.2 dB Compression
Frequency
DC- 2 GHz
2 - 4 GHz
DC- 4 GHz
DC- 2 GHz
2 - 4 GHz
DC- 2 GHz
2 - 4 GHz
0.1 - 2 GHz
2 - 4 GHz
DC- 4 GHz
0.05 GHz Min. Atten. State
0.05 GHz All Atten. States
0.5 - 4 GHz Min. Atten. State
0.5 - 4 GHz All Atten. States
0.05 GHz Min. Atten. State
0.05 GHz All Atten. States
0.5 - 4 GHz Min. Atten. State
0.5 - 4 GHz All Atten. States
Input Third Order Intercept Point
each tone = +5dBm typ.
12 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Web Site: www.hittite.com
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