HMC424LP3

HMC424LP3 / 424LP3E v08.0809 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz 5 ATTENUATORS - DIGITAL - SMT Typical Applications The HMC424LP3 / HMC424LP3E is ideal for: • Basestation Infrastructure • Fiber Optics & Broadband Telecom • Microwave & VSAT Radios • Military & Space • Test Instrumentation Features 0.5 dB LSB Steps to 31.5 dB Single Control Line Per Bit ± 0.5 dB Typical Bit Error 9mm2 Leadless SMT Plastic Package Functional Diagram General Description The HMC424LP3 & HMC424LP3E are broadband 6-bit GaAs IC digital attenuators in low cost leadless surface mount packages. Covering DC to 13 GHz, the insertion loss is less then 4 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. Electrical Specifi cations, 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 - 15.5 dB States 16 - 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 ± 0.3 + 3% of Atten. Setting Max ± 0.3 + 5% of Atten. Setting Max 22 46 32 dB dB dBm dBm dBm Frequency (GHz) DC - 4 GHz 4.0 - 8.0 GHz 8.0 - 13.0 GHz DC - 13.0 GHz DC - 13.0 GHz 9 Min. Typ. 3.1 3.5 4.0 31.5 12 Max. 3.8 4.0 4.6 Units dB dB dB dB dB 5 - 110 F or 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 HMC424LP3E v08.0809 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Return Loss RF1, RF2 Insertion Loss 0 (Only Major States are Shown) 0 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB 5 ATTENUATORS - DIGITAL - SMT 5 - 111 INSERTION LOSS (dB) -2 RETURN LOSS (dB) 12 15 -5 -4 +25 C +85 C -40 C -10 -6 -15 -8 -20 -10 0 3 6 9 FREQUENCY (GHz) -25 0 3 6 9 12 15 FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) -5 -10 -15 -20 -25 -30 -35 0 3 6 9 12 15 FREQUENCY (GHz) -2 0 4 8 12 16 20 24 28 32 ATTENUATION STATE (dB) 1 BIT ERROR (dB) Bit Error vs. Attenuation State 2 0.1 GHz 4 GHz 8 GHz 13 GHz 0 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB -1 Bit Error vs. Frequency (Only Major States are Shown) 2 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) 100 80 RELATIVE PHASE (deg) 60 40 20 0 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB 1 BIT ERROR (dB) 0 -1 -2 0 3 6 9 12 15 FREQUENCY (GHz) -20 0 3 6 9 12 15 FREQUENCY (GHz) F or 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 HMC424LP3E v08.0809 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz 5 ATTENUATORS - DIGITAL - SMT Worst Case Step Error Between Successive Attenuation States 2 Bias Voltage & Current Vee Range= -5 Vdc ± 10% Vee (VDC) -5 Iee (Typ.) (mA) 2 Iee (Max.) (mA) 5 1 STEP ERROR (dB) 0 Control Voltage -1 State Low -2 0 3 6 9 12 15 FREQUENCY (GHz) Bias Condition 0 to -3V @ 35 μA Typ. Vee to Vee +0.8V @ 5 μA Typ. 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. 5 - 112 F or 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 HMC424LP3E v08.0809 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 Storage Temperature Operating Temperature RF Input Power (0.5 - 13 GHz) Vee - 0.5 Vdc -7 Vdc 150 °C 330 °C/W -65 to + 150 °C -55 to +85 °C +25 dBm 5 ATTENUATORS - DIGITAL - SMT NOTES: 1. LEADFRAME MATERIAL: COPPER ALLOY 2. DIMENSIONS ARE IN INCHES [MILLIMETERS] 3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE 4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM. 5. PACKAGE WARP SHALL NOT EXCEED 0.05mm. 6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED LAND PATTERN. ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing Package Information Part Number HMC424LP3 HMC424LP3E Package Body Material Low Stress Injection Molded Plastic RoHS-compliant Low Stress Injection Molded Plastic Lead Finish Sn/Pb Solder 100% matte Sn MSL Rating MSL1 MSL1 [1] Package Marking [3] 424 XXXX 424 XXXX [2] [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX F or 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 5 - 113 HMC424LP3E v08.0809 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz 5 ATTENUATORS - DIGITAL - SMT Pin Description Pad Number 1, 3, 10, 12 Function GND Description Package bottom has an exposed metal paddle that must also be connected to RF ground 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, 11 RFIN, RFOUT 4, 5, 6, 7, 8, 9 V6 - V1 See truth table and control voltage table. 13, 14, 16 N/C This pin should be connected to PCB RF ground to maximize performance 15 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. 5 - 114 F or 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 HMC424LP3E v08.0809 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 13 GHz Evaluation PCB 5 ATTENUATORS - DIGITAL - SMT 5 - 115 * R1 - R6 = 100 Ohm. These resistors are optional and may be used to enhance decoupling of the RF path from the control inputs. List of Materials for Evaluation PCB 105406 [1] Item J1 - J2 J3 C1 R1 - R6 U1 PCB [2] Description PCB Mount SMA Connector 8 Pin DC Connector 0.01 μF Capacitor, 0603 Pkg. 100 Ohm Resistor, 0603 Pkg. HMC424LP3 / HMC424LP3E Digital Attenuator 105245 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. F or 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