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HMC624A Datasheet

GaAs Digital Attenuator

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Data Sheet
0.1 GHz to 6.0 GHz,0.5 dB LSB, 6-Bit,
GaAs Digital Attenuator
HMC624A
FEATURES
Attenuation range: 0.5 dB (LSB) steps to 31.5 dB
Low insertion loss: 1.6 dB at 3 GHz
Excellent attenuation accuracy
High linearity
Input 0.1dB compression (P0.1dB): 33 dBm typical
Input third-order intercept (IP3): 55 dBm typical
High RF input power handling: 28 dBm
Low phase shift: 25° at 3 GHz
Single-supply operation: 3 V to 5 V
CMOS-/TTL-compatible control
24-lead, 4 mm × 4 mm LFCSP package
Pin compatible to the HMC1122
APPLICATIONS
Cellular infrastructure
Microwave radios and very small aperture terminals (VSATs)
Test equipment and sensors
Intermediate frequency (IF) and radio frequency (RF) designs
FUNCTIONAL BLOCK DIAGRAM
24 23 22 21 20 19
P/S 1
18 VDD
CLK 2
SERIN 3
SERIAL/
PARALLEL
INTERFACE
17 PUP1
16 PUP2
LE 4
GND 5
ATTIN 6
7
6-BIT/
DIGITAL
ATTENUATOR
15 SEROUT
14 GND
13 ATTOUT
8 9 10 11 12
PACKAGE
BASE
GND
Figure 1.
GENERAL DESCRIPTION
The HMC624A is a 6-bit digital attenuator with a 31.5 dB
attenuation control range in 0.5 dB steps.
The HMC624A offers excellent attenuation accuracy and high
input linearity over the specified frequency range from 100 MHz
to 6.0 GHz. However, this digital attenuator features external ac
grounding capacitors to extend the operation below 100 MHz.
The HMC624A is integrated with two dies: a CMOS driver and
a gallium arsenide (GaAs) RF attenuator. The CMOS driver
provides both serial and parallel control of the RF attenuator.
The device also features a user-selectable power-up state and a
serial output port for cascading other serial controlled
components.
The HMC624A operates with a single positive supply voltage
from 3 V to 5 V, and provides a CMOS-/TTL-compatible
control interface.
The HMC624A comes in a RoHS compliant, compact, 4 mm ×
4 mm LFCSP package, and is pin compatible to the HMC1122
except for the ACGx pins.
Rev. B
Document Feedback
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. Specifications 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


Analog Devices Semiconductor Electronic Components Datasheet

HMC624A Datasheet

GaAs Digital Attenuator

No Preview Available !

HMC624A
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Specifications .................................................................. 4
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Interface Schematics..................................................................... 6
Typical Performance Characteristics ............................................. 7
Insertion Loss, Return Loss, State Error, Step Error, and
Relative Phase................................................................................ 7
REVISION HISTORY
9/2017—Rev. A to Rev. B
Changed CP-24-2 to CP-24-16.................................... Throughout
Changes to Table 3............................................................................ 5
Updated Outline Dimensions ....................................................... 15
Changes to Ordering Guide .......................................................... 15
3/2017—Rev. 00.0912 to Rev. A
This Hittite Microwave Products data sheet has been reformatted to
meet the styles and standards of Analog Devices, Inc.
Changes to Title, Features Section, Applications Section, and
General Description Section ........................................................... 1
Changes to Table 1............................................................................ 3
Added Table 2; Renumbered Sequentially .................................... 4
Changes to Table 3............................................................................ 5
Added Figure 2 and Thermal Resistance Section; Renumbered
Sequentially ....................................................................................... 5
Deleted Bias Voltage Table and Control Voltage Table;
Renumbered Sequentially................................................................ 5
Added Figure 3.................................................................................. 6
Changes to Table 5............................................................................ 6
Added Insertion Loss, Return Loss, State Error, and Relative
Phase Section..................................................................................... 7
Data Sheet
Input Power Compression and Third-Order Intercept............9
Theory of Operation ...................................................................... 11
Power Supply............................................................................... 11
Power-Up Interface .................................................................... 11
Serial or Parallel Mode Selection ............................................. 11
Serial Mode Interface................................................................. 11
Parallel Mode Interface.............................................................. 12
RF Input and Output ................................................................. 12
ACGx Pins................................................................................... 12
Applications Information .............................................................. 13
Evaluation Board ........................................................................ 13
Outline Dimensions ....................................................................... 15
Ordering Guide .......................................................................... 15
Changes to Figure 9, Figure 10, Figure 12, and Figure 13 ...........7
Deleted Application Circuit Figure.................................................8
Added Figure 14, Figure 15, and Figure 17....................................8
Changes to Figure 16 ........................................................................8
Added Figure 20 and Figure 23 .......................................................9
Changes to Figure 21 and Figure 22 ...............................................9
Added Figure 26 and Figure 29 .................................................... 10
Added Theory of Operation Section, Serial or Parallel Mode
Selection Section, Table 8, and Figure 30 .................................... 11
Changes to Table 6, Power Supply Section, Power-Up Interface
Section, Table 7, Serial Mode Interface Section ......................... 11
Added RF Input and Output Section and AGCx Pins Section....... 12
Changes to Figure 31, Parallel Mode Interface Section, Direct
Parallel Mode Section, Latched Parallel Mode Section, and
Figure 32 .......................................................................................... 12
Added Applications Information Section ................................... 13
Changes to Evaluation Board Section.......................................... 13
Added Figure 34 ............................................................................. 14
Changes to Table 9.......................................................................... 14
Updated Outline Dimensions ....................................................... 15
Changes to Ordering Guide .......................................................... 15
Rev. B | Page 2 of 15


Part Number HMC624A
Description GaAs Digital Attenuator
Maker Analog Devices
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