HMC542BLP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 4 GHz
Typical Applications
Features
thꢀ HMC542BlP4e ꢁꢂ ꢁdꢀaꢃ fꢄꢅ:
• Cellular/PCS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX, & WiBro
• Microwave Radio & VSAT
0.5 dB LSB Steps to 31.5 dB
TTL/CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
± 0.25 dB Typical Step Error
Single +5V Supply
• Test Equipment and Sensors
24 Lead 4x4 mm QFN Package: 16 mm²
Functional Diagram
General Description
The HMC542BLP4E is a broadband 6-bit GaAs IC
digital attenuator with a CMOS compatible serial
to parallel driver in low cost leadless surface mount
package. This serial control digital attenuator incorp
rates off chip AC ground capacitors for near DC opera-
tion, making it suitable for a wide variety of RF and
IF applications. Covering DC to 4 GHz, the inser-
tion loss is 1.7 dB and the attenuator bit values are
0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenua-
tion of 31.5 dB. Attenuation accuracy is excellent at
±0.25 dB typical step error with an IIP3 of +50 dBm.
Six bit serial control words are used to select each
attenuation state. A single Vcc bias of +5V is required.
Electrical Specifications, TA = +25° C, with Vcc = +5V
Parameter
Frequency (GHz)
Min.
Typ.
Max.
Units
DC - 1.5 GHz
1.5 - 3.0 GHz
3.0 - 4.0 GHz
1.4
1.7
1.9
1.5
1.8
2.3
dB
dB
dB
Insertion Loss
Attenuation Range
DC - 4.0 GHz
DC - 4.0 GHz
31.5
dB
dB
Return Loss (RF1 & RF2, All Atten. States)
19
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
DC - 1.0 GHz
1.0 - 4.0 GHz
± (0.20 + 3% of Atten. Setting) Max
± (0.20 + 2.5% of Atten. Setting) Max
dB
dB
Input Power for 0.1 dB Compression
0.1 - 4.0 GHz
0.1 - 4.0 GHz
30
dBm
dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
50
Switching Characteristics
DC - 4.0 GHz
tRISE, tFALL (10/90% RF)
60
100
ns
ns
tON, tOFF (50% CTL to 10/90% RF)
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
For price, delivery, and to place orders: Analog Devices, Inc.,
resFpoonrsibpilirtyicisea,ssdumeeldivbey ArynalaognDdevticoespfolar itcseuseo, rndoreforrsa:nyHinifrtitnigteemeMntsicofrpoawtenatsvoer oCtheorrporation, 2 Elizabeth Drive, Chelmsford, MA 01824
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
rights of third parties that may result from its use. Specifications subject to change without notice. No
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Phone: 781-329-4700 • Order online at www.analog.com
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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1
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