ATTENUATORS - SMT
1
HMC470ALP3E
v01.0716
1 dB LSB GaAS MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3 GHz
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
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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. Specications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Functional Diagram
Electrical Specications,
T
A
= +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)
The HMC470ALP3E is ideal for:
• Cellular/Wireless Infrastructure
• Microwave Radio & VSAT
• Test Equipment and Sensors
1 dB LSB Steps to 31 dB
Single Control Line Per Bit
TTL/CMOS Compatible Control
± 0.3 dB Typical Step Error
Single +5V Supply
16 Lead 3x3mm SMT Package: 9mm²
The HMC470ALP3E is a broadband 5-bit GaAs IC
digital attenuators in low cost leadless surface mo-
unt packages. This single positive control line per
bit digital attenuator incorporates off chip AC ground
capacitors for near DC operation, making it suitable
for a wide variety of RF and IF applications. Covering
DC to 3 GHz, the insertion loss is less than 1.5 dB
typical. The attenuator bit values are 1 (LSB), 2, 4, 8,
and 16 dB for a total attenuation of 31 dB. Attenuation
accuracy is excellent at ± 0.3 dB typical step error with
an IIP3 of +49 dBm. Five TTL/CMOS control inputs
are used to select each attenuation state. A single Vdd
bias of +5V is required.
Parameter Frequency (GHz) Min. Typ. Max. Units
Insertion Loss
DC - 1.5 GHz
1.5 - 2.3 GHz
2.3 - 3.0 GHz
1.3
1.5
1.7
1.6
1.8
2.0
dB
dB
dB
Attenuation Range DC - 3 GHz 31 dB
Return Loss (RF1 & RF2, All Atten. States) DC - 3 GHz 14 dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
1.0 - 15.0 dB States
16.0 - 31.0 dB States
DC - 2.3 GHz
2.3 - 3.0 GHz
2.3 - 3.0 GHz
± (0.3 + 2% of Atten. Setting) Max.
± (0.3 + 3% of Atten. Setting) Max.
± (0.3 + 6% of Atten. Setting) Max.
dB
dB
dB
Input Power for 0.1 dB Compression 0.1 - 3.0 GHz 27 dBm
Input Third Order Intercept Point
(Two-Tone Input Power= 10 dBm Each Tone)
REF-15dB States
16 - 31dB States
0.1 - 3.0 GHz
49
48
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 3 GHz
50
70
ns
ns
Typical Applications Features
General Description
