ATTENUATORS - SMT
5
5 - 66
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HMC307QS16G / 307QS16GE
1dB LSB GaAs MMIC 5-BIT DIGITAL
ATTENUATOR, DC - 4 GHz
v08.0908
General Description
Features
Functional Diagram
1 dB LSB Steps to 31 dB
Single Control Line Per Bit
± 0.5 dB Typical Bit Error
Miniature QSOP-16 Package: 29.4 mm2
Electrical Speci cations, TA = +25° C, Vee = -5V & VCTL= 0/Vee
Typical Applications
The HMC307QS16G(E) are broadband 5-bit GaAs
IC digital attenuators in 16 lead QSOP grounded
base surface mount plastic packages. Covering DC
to 4 GHz, the insertion loss is less then 2 dB typical.
The attenuator bit values are 1 (LSB), 2, 4, 8, and 16
dB for a total attenuation of 31 dB. Attenuation accu-
racy is excellent at ± 0.5 dB typical with an IIP3 of up
to +44 dBm. Five bit control voltage inputs, toggled
between 0 and -5V, are used to select each attenua-
tion state at less than 50 uA each. A single Vee bias of
-5V allows operation down to DC. This product is an
excellent alternative to the HMC235QS16G.
The HMC307QS16G(E) is ideal for:
• Cellular
• PCS, ISM, MMDS
• Wireless Local Loop
Parameter Frequency Min. Typical Max. Units
Insertion Loss
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
1.8
1.9
2.0
2.1
2.2
2.4
2.5
2.7
dB
dB
dB
dB
Attenuation Range DC - 4 GHz 31 dB
Return Loss (RF1 & RF2, All Atten. States)
DC - 1.4 GHz
1.4 - 2.3 GHz
2.3 - 2.7 GHz
2.7 - 4.0 GHz
11
11
10
8
15
17
18
15
dB
dB
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
1 - 20 dB States
21 - 31 dB States
1 - 15 dB States
16 - 31 dB States
DC - 2.7 GHz
DC - 2.7 GHz
2.7 - 4.0 GHz
2.7 - 4.0 GHz
± 0.2 + 3% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.6 + 10% of Atten. Setting Max
dB
dB
dB
dB
Input Power for 0.1 dB Compression 0.5 - 4.0 GHz 24 dBm
Input Third Order Intercept Point
(Two-tone Input Power = 0 dBm Each Tone) 0.5 - 4.0 GHz 44 dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF) DC - 4 GHz 140
160
ns
ns
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D