HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz ATTENUATORS - CONNECTORIZED MODULES 9 Features 0.5 dB LSB Steps to 31.5 dB CMOS Compatible Serial Data Interface ± 0.3 dB Typical Bit Error Hermetically Sealed Module Field Replaceable SMA Connectors Typical Applications -55 to +85 C Operating Temperature The HMC-C018 is ideal for: • Telecom Infrastructure • Military Radio, Radar & ECM • Space Systems General Description • Test Instrumentation The HMC-C018 is a DC to 13 GHz 6-bit GaAs IC Digital Serial Control Attenuator housed in a miniature hermetic module. This wideband attenuator features 3.6 dB typical insertion loss, +38 dBm input IP3, and bit values of 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent with ±0.3 dB typical step error. A six bit CMOS compatible serial control word is used to select each attenuation state and a single VDC bias of -5V allows operation at frequencies down to DC. Removable SMA connectors can be detached to allow direct connection of the module’s I/O pins to a microstrip or coplanar circuit. Functional Diagram Electrical Specifications, TA = +25° C, With VDC = -5V and 0/+5V CMOS Control Parameter Frequency (GHz) Typ. Max. Units Insertion Loss DC - 4.0 GHz 4.0 - 8.0 GHz 8.0 - 13 .0 GHz 3.2 3.6 5.0 3.7 4.1 6.0 dB dB dB Attenuation Range DC - 13.0 GHz 31.5 dB Return Loss (RF1 & RF2, All Atten. States) DC - 8.0 GHz 8.0 - 13.0 GHz 15 10 dB dB DC - 3.0 GHz 3.0 - 10.0 GHz 3.0 - 10.0 GHz 10.0 - 13.0 GHz ± (0.2 + 3% of Atten. Setting) Max ± (0.4 + 3% of Atten. Setting) Max ± (0.5 + 6% of Atten. Setting) Max ± (0.6 + 6% of Atten. Setting) Max dB dB dB dB Attenuation Accuracy: (Referenced to Insertion Loss) All States 0.5 - 27.5 dB 28.0 - 31.5 dB All States Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% RF) tON/tOFF (50% CTL to 10/90% RF) 9 - 80 REF State All Other States Min. 1.0 - 13.0 GHz 22 dBm 1.0 - 13.0 GHz 46 32 dBm dBm 600 700 ns ns DC - 13.0 GHz For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz 9 Return Loss RF1, RF2 (Only Major States are Shown) Insertion Loss 0 31.5 dB 4 dB 1 dB RETURN LOSS (dB) INSERTION LOSS (dB) -5 -2 -3 -4 -5 -6 -7 +25 C +85 C -55 C -8 -10 2 dB I.L 0.5 dB 8 dB 16 dB -15 -20 -25 -9 -10 -30 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 4 5 FREQUENCY (GHz) 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) Normalized Attenuation Bit Error vs. Attenuation State 0 2 -5 1.5 0.1 GHz 13 GHz 8 GHz 4 GHz 1 -10 BIT ERROR (dB) NORMALIZED ATTENUATION (dB) (Only Major States are Shown) -15 -20 -25 0.5 0 -0.5 -1 -30 -1.5 -35 -2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 4 8 12 16 20 24 Bit Error vs. Frequency Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 3 80 2.5 70 31.5 dB BIT ERROR (dB) 0.5-16 dB 1 0.5 0 -0.5 -1 -1.5 -2 RELATIVE PHASE (deg) 2 1.5 28 32 ATTENUATION STATE (dB) FREQUENCY (GHz) ATTENUATORS - CONNECTORIZED MODULES 0 -1 60 50 40 16 dB 31.5 dB 30 20 8 dB 10 0 -10 -2.5 -3 0.5 - 4 dB -20 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 9 - 81 HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz 9 Worst Case Step Error Between Successive Attenuation States Digital Inputs (Reset, Shift Clock, Latch Enable & Serial Input) 0.5 STEP ERROR (dB) ATTENUATORS - CONNECTORIZED MODULES 1 Absolute Maximum Ratings 0 -0.5V to +5.5V Bias Voltage (VDC) -7.0 Vdc Storage Temperature -65 to + 150 °C Operating Temperature -55 to +85 °C RF Input Power (0.5 - 13.0 GHz) +25 dBm -0.5 ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) CMOS Control Voltages Bias Voltage & Current VDC Range= -5.0 Vdc ± 10% VDC State Idc (Typ.) (mA) Idc (Max.) (mA) 5 9 -5.0 Serial Input Truth Table Shift Clock Reset Function X X L Shift register cleared X Ç H Shift register clocked X H 0 to +1.3V High +3.5 to +5.0V Truth Table Latch Enable Ç Bias Condition Low Contents of shift register transferred to Digital Attenuator Serial Control Input C0.5 C1 C2 C4 C8 C16 Attenuation Settings RF1 - RF2 H H H H H H Reference I.L. L H H H H H 0.5 dB H L H H H H 1 dB H H L H H H 2 dB H H H L H H 4 dB H H H H L H 8 dB H H H H H L 16 dB L L L L L L 31.5 dB Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 9 - 82 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz Parameter Symbol Min. Max. Units Serial Input Setup Time ts 20 - ns Hold time from Serial Input to Shift Clock th 0 - ns Setup time from Shift Clock to Latch Enable tlsup 40 - ns Propagation delay, Latch Enable to C0.5 through C8 tpd - 30 ns - 20 - ns fclk - 30 MHz Setup time from Reset to Shift Clock Clock Frequency (1/tclk) Timing Diagram For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com ATTENUATORS - CONNECTORIZED MODULES 9 Timing 9 - 83 HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz Logic / Functional Diagram ATTENUATORS - CONNECTORIZED MODULES 9 9 - 84 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz 9 ATTENUATORS - CONNECTORIZED MODULES Programming Example to Select 0.5 dB Attenuation State For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 9 - 85 HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz Outline Drawing ATTENUATORS - CONNECTORIZED MODULES 9 NOTES: 1. PACKAGE, LEADS, COVER MATERIAL: KOVAR™ 2. BRACKET MATERIAL: ALUMINUM 3. PLATING: ELECTROLYTIC GOLD 50 MICROINCHES MIN., OVER ELECTROLYTIC NICKEL 75 MICROINCHES MIN. 4. ALL DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. TOLERANCES ±.005 [0.13] UNLESS OTHERWISE SPECIFIED. 6. FIELD REPLACEABLE SMA CONNECTORS. TENSOLITE 5602 - 5CCSF OR EQUIVALENT. 7. MOUNT MODULE TO SYSTEM PLATFORM WITH #2-56 HARDWARE 9 - 86 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC-C018 v00.0306 0.5dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR MODULE, DC - 13 GHz Pin Number Function Description 1 RF1 This pin is DC coupled and matched to 50 Ohms. Blocking capacitors are required if RF line potential is not equal to 0 Vdc. 2 C Shift Clock 3 R Reset 4 S Serial Input 5 L Latch Enable 6 RF2 This pin is DC coupled and matched to 50 Ohms. Blocking capacitors are required if RF line potential is not equal to 0 Vdc. 7 VDC Supply voltage: -5 Vdc ±10%. (Internal diode for reverse bias protection) 8 GND Power Supply Ground Interface Schematic For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com ATTENUATORS - CONNECTORIZED MODULES 9 Pin Description 9 - 87