0.1 GHz to 6.0 GHz,0.5 dB LSB, 6-Bit, GaAs Digital Attenuator Data Sheet HMC624A FEATURES FUNCTIONAL BLOCK DIAGRAM Attenuation range: 0.5 dB (LSB) steps to 31.5 dB 24 23 22 21 20 19 Low insertion loss: 1.6 dB at 3 GHz Excellent attenuation accuracy P/S 1 18 VDD High linearity 2 PUP1 CLK 17 Input 0.1dB compression (P0.1dB): 33 dBm typical SERIAL/ PARALLEL Input third-order intercept (IP3): 55 dBm typical PUP2 3 16 SERIN INTERFACE High RF input power handling: 28 dBm SEROUT LE 4 15 Low phase shift: 25 at 3 GHz 6-BIT/ Single-supply operation: 3 V to 5 V GND 5 14 GND DIGITAL ATTENUATOR CMOS-/TTL-compatible control 13 ATTOUT ATTIN 6 24-lead, 4 mm 4 mm LFCSP package Pin compatible to the HMC1122 78 9 10 11 12 PACKAGE BASE APPLICATIONS GND Cellular infrastructure Figure 1. Microwave radios and very small aperture terminals (VSATs) Test equipment and sensors Intermediate frequency (IF) and radio frequency (RF) designs GENERAL DESCRIPTION The HMC624A is a 6-bit digital attenuator with a 31.5 dB serial output port for cascading other serial controlled attenuation control range in 0.5 dB steps. components. The HMC624A offers excellent attenuation accuracy and high The HMC624A operates with a single positive supply voltage input linearity over the specified frequency range from 100 MHz from 3 V to 5 V, and provides a CMOS-/TTL-compatible to 6.0 GHz. However, this digital attenuator features external ac control interface. grounding capacitors to extend the operation below 100 MHz. The HMC624A comes in a RoHS compliant, compact, 4 mm The HMC624A is integrated with two dies: a CMOS driver and 4 mm LFCSP package, and is pin compatible to the HMC1122 a gallium arsenide (GaAs) RF attenuator. The CMOS driver except for the ACGx pins. provides both serial and parallel control of the RF attenuator. The device also features a user-selectable power-up state and a 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 2017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. ACG1 D0 ACG2 D1 ACG3 D2 ACG4 D3 ACG5 D4 ACG6 D5 15353-001HMC624A Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Input Power Compression and Third-Order Intercept ............9 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 11 Functional Block Diagram .............................................................. 1 Power Supply ............................................................................... 11 General Description ......................................................................... 1 Power-Up Interface .................................................................... 11 Revision History ............................................................................... 2 Serial or Parallel Mode Selection ............................................. 11 Specifications ..................................................................................... 3 Serial Mode Interface ................................................................. 11 Timing Specifications .................................................................. 4 Parallel Mode Interface .............................................................. 12 Absolute Maximum Ratings ............................................................ 5 RF Input and Output ................................................................. 12 Thermal Resistance ...................................................................... 5 ACGx Pins ................................................................................... 12 ESD Caution .................................................................................. 5 Applications Information .............................................................. 13 Pin Configuration and Function Descriptions ............................. 6 Evaluation Board ........................................................................ 13 Interface Schematics..................................................................... 6 Outline Dimensions ....................................................................... 15 Typical Performance Characteristics ............................................. 7 Ordering Guide .......................................................................... 15 Insertion Loss, Return Loss, State Error, Step Error, and Relative Phase................................................................................ 7 REVISION HISTORY 9/2017Rev. A to Rev. B Changes to Figure 9, Figure 10, Figure 12, and Figure 13 ........... 7 Changed CP-24-2 to CP-24-16 .................................... Throughout Deleted Application Circuit Figure ................................................. 8 Changes to Table 3 ............................................................................ 5 Added Figure 14, Figure 15, and Figure 17 .................................... 8 Updated Outline Dimensions ....................................................... 15 Changes to Figure 16 ........................................................................ 8 Changes to Ordering Guide .......................................................... 15 Added Figure 20 and Figure 23 ....................................................... 9 Changes to Figure 21 and Figure 22 ............................................... 9 3/2017Rev. 00.0912 to Rev. A Added Figure 26 and Figure 29 .................................................... 10 Added Theory of Operation Section, Serial or Parallel Mode This Hittite Microwave Products data sheet has been reformatted to Selection Section, Table 8, and Figure 30 .................................... 11 meet the styles and standards of Analog Devices, Inc. Changes to Table 6, Power Supply Section, Power-Up Interface Changes to Title, Features Section, Applications Section, and Section, Table 7, Serial Mode Interface Section ......................... 11 General Description Section ........................................................... 1 Added RF Input and Output Section and AGCx Pins Section ....... 12 Changes to Table 1 ............................................................................ 3 Changes to Figure 31, Parallel Mode Interface Section, Direct Added Table 2 Renumbered Sequentially .................................... 4 Parallel Mode Section, Latched Parallel Mode Section, and Changes to Table 3 ............................................................................ 5 Figure 32 .......................................................................................... 12 Added Figure 2 and Thermal Resistance Section Renumbered Added Applications Information Section ................................... 13 Sequentially ....................................................................................... 5 Changes to Evaluation Board Section.......................................... 13 Deleted Bias Voltage Table and Control Voltage Table Added Figure 34 ............................................................................. 14 Renumbered Sequentially ................................................................ 5 Changes to Table 9 .......................................................................... 14 Added Figure 3 .................................................................................. 6 Updated Outline Dimensions ....................................................... 15 Changes to Table 5 ............................................................................ 6 Changes to Ordering Guide .......................................................... 15 Added Insertion Loss, Return Loss, State Error, and Relative Phase Section ..................................................................................... 7 Rev. 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