HMC424LH5

HMC424LH5 v00.0805 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Typical Applications Features 0.5 dB LSB Steps to 31.5 dB Single Control Line Per Bit +/- 0.3 dB Typical Bit Error Hermetic SMT Package, 25mm2 Screening to MIL-PRF-38535 (Class B or S) Available 6 ATTENUATORS - SMT The HMC424LH5 is ideal for: • Telecom Infrastructure • Military Radio, Radar & ECM • Space Systems • Test Instrumentation Functional Diagram General Description The HMC424LH5 is a broadband 6-bit GaAs MMIC digital attenuator housed in a hermetic SMT leadless package. Covering DC to 13 GHz, the insertion loss is less than 3.5 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent at ± 0.5 dB typical step error with an IIP3 of +32 dBm. Six control voltage inputs, toggled between 0 and -5V, are used to select each attenuation state. A single Vee bias of -5V allows operation at frequencies down to DC. The HMC424LH5 is compatible with standard and lead free surface mount manufacturing techniques and is suitable for high reliability military, industrial and space applications. Electrical Specifications, TA = +25° C, With Vee = -5V & VCTL= 0/-5V Parameter Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) 0.5 - 16.5 dB States 17 - 31.5 dB 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) REF State All Other States DC - 13.0 GHz DC - 13.0 GHz 1.0 - 13.0 GHz 1.0 - 13.0 GHz DC - 13.0 GHz 30 50 ns ns ± 0.4 + 4% of Atten. Setting Max ± 0.5 + 5% of Atten. Setting Max 22 46 32 dB dB dBm dBm dBm Frequency (GHz) DC - 4.0 GHz 4.0 - 8.0 GHz 8.0 - 13.0 GHz DC - 13.0 GHz DC - 13.0 GHz Min. Typ. 2.7 3.3 4.2 31.5 12 Max. 3.2 3.8 4.7 Units dB dB dB dB dB 6 - 114 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 HMC424LH5 v00.0805 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Return Loss RF1, RF2 Insertion Loss 0 -1 INSERTION LOSS (dB) -2 -3 -4 -5 -6 -7 -8 -9 -10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) +25 C +85 C -40 C (Only Major States are Shown) 0 6 8 dB 1 dB I.L 2 dB 4 dB 16 dB 0.5 dB 31.5 dB -5 RETURN LOSS (dB) -10 -15 -20 -25 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) -5 -10 -15 -20 -25 -30 -35 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) Bit Error vs. Attenuation State 2 1.5 1 BIT ERROR (dB) 0.5 0 -0.5 -1 -1.5 -2 0 4 8 12 16 20 24 28 32 ATTENUATION STATE (dB) 0.1 GHz 4 GHz 8 GHz 13 GHz Bit Error vs. Frequency (Only Major States are Shown) 2 1.5 1 BIT ERROR (dB) 0.5 0 -0.5 -1 -1.5 -2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FREQUENCY (GHz) 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB Relative Phase vs. Frequency (Only Major States are Shown) 60 50 RELATIVE PHASE (deg) 40 30 20 10 0 -10 0.5 - 4 dB 16 dB 8 dB 31.5 dB -20 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 6 - 115 ATTENUATORS - SMT HMC424LH5 v00.0805 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Worst Case Step Error Between Successive Attenuation States Bias Voltage & Current Vee Range= -5.0 Vdc ± 10% Vee (VDC) -5.0 Iee (Typ.) (mA) 3 Iee (Max.) (mA) 5 6 ATTENUATORS - SMT STEP ERROR (dB) 2 1.5 1 0.5 0 -0.5 -1 Control Voltage State Bias Condition 0 to -3V @ 35 μA Typ. -5 to -4.2V @ 5 μA Typ. Low 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 -1.5 -2 FREQUENCY (GHz) High Truth Table Control Voltage Input V1 16 dB Low Low Low Low Low Low High High V2 8 dB Low Low Low Low Low High Low High V3 4 dB Low Low Low Low High Low Low High V4 2 dB Low Low Low High Low Low Low High V5 1 dB Low Low High Low Low Low Low High V6 0.5 dB Low High Low Low Low Low Low High Attenuation State RF1 - RF2 Reference I.L. 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB Any Combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 6 - 116 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 HMC424LH5 v00.0805 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Absolute Maximum Ratings Control Voltage (V1 to V6) Bias Voltage (Vee) Channel Temperature Thermal Resistance Continuous Pdiss (T= 85 °C) (derate 2.9 mW/ °C above 85 °C) Storage Temperature Operating Temperature RF Input Power (0.5 - 13.0 GHz) Vee - 0.5 Vdc -7.0 Vdc 150 °C 344 °C/W 0.18 W -65 to + 150 °C -55 to +85 °C +25 dBm ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS 6 ATTENUATORS - SMT 6 - 117 Outline Drawing NOTES: 1. PACKAGE BODY MATERIAL: CERAMIC & KOVAR 2. LEAD AND GROUND PADDLE PLATING: GOLD 40 - 80 MICROINCHES. 3. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE 5. PAD BURR LENGTH 0.15mm MAX. PAD BURR HEIGHT 0.25mm MAX. 6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 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 HMC424LH5 v00.0805 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Pin Description 6 ATTENUATORS - SMT Pad Number 1, 9 Function RF1, RF2 Description This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required if RF line potential is not equal to 0V. Interface Schematic 2-7 V6 - V1 See truth table and control voltage table. 8, 10, 12 GND Package base must also be connected to RF ground 11 Vee Supply Voltage -5V ± 10% Suggested Driver Circuit (One Circuit Required Per Bit Control Input) Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. * Recommended value to suppress unwanted RF signals at V1 - V6 control lines. 6 - 118 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 HMC424LH5 v00.0805 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Evaluation PCB 6 ATTENUATORS - SMT List of Materials for Evaluation PCB 110855 [1] Item J1 - J2 J3 C1 U1 PCB [2] Description PCB Mount SMA SRI Connector 8 Pin DC Connector .1” Thruhole 0.01 μF Capacitor, 0603 Pkg. HMC424LH5 Digital Attenuator 110853 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 The circuit board used in the final application should use RF circuit design techniques. Signal lines should have 50 ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request. 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 6 - 119