425LP3E

HMC425LP3 / 425LP3E 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz v03.0409 5 ATTENUATORS - DIGITAL - SMT Typical Applications The HMC425LP3 / HMC425LP3E is ideal for: • WLAN & Point-to-Multi-Point • Fiber Optics & Broadband Telecom • Microwave Radio & VSAT • Military Features 0.5 dB LSB Steps to 31.5 dB Single Control Line Per Bit ± 0.5 dB Typical Bit Error Single +5V Supply 3x3 mm SMT Package Functional Diagram General Description The HMC425LP3 & HMC425LP3E are broadband 6-bit GaAs IC digital attenuators in low cost leadless surface mount packages. Covering 2.2 to 8.0 GHz, the insertion loss is less then 3.8 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 +40 dBm. Six control voltage inputs, toggled between 0 and +3 to +5V, are used to select each attenuation state. A single Vdd bias of +3 to +5V is required. Electrical Specifi cations, TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) Parameter Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) 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) All States Vdd = 5V Vdd = 3V REF - 16.0 dB States 16.5 - 31.5 dB States Frequency (GHz) 2.2 - 6.0 GHz 6.0 - 8.0 GHz 2.2 - 8.0 GHz 2.2 - 8.0 GHz 2.2 - 8.0 GHz 2.2 - 8.0 GHz 2.2 - 8.0 GHz 2.2 - 8.0 GHz 160 180 ns ns Min. Typ. 3.5 3.8 31.5 15 ± 0.5 + 5% of Atten. Setting Max. 22 19 45 35 Max. 3.8 4.3 Units dB dB dB dB dB dBm dBm dBm dBm 5 - 116 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 HMC425LP3 / 425LP3E 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz Return Loss RF1, RF2 Insertion Loss 0 v03.0409 (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 - 117 INSERTION LOSS (dB) -2 RETURN LOSS (dB) 8 9 10 -5 -4 +25 C +85 C -40 C -10 -6 -15 -8 -20 -10 1 2 3 4 5 6 7 FREQUENCY (GHz) -25 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) -5 -10 -15 -20 -25 -30 -35 1 2 3 4 5 6 7 8 9 10 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 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB -1 2.4 GHz 3.5 GHz 5.5 GHz 8.0 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 1 2 3 4 5 6 7 8 9 10 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) 80 60 RELATIVE PHASE (deg) 40 20 0 -20 -40 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB 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 HMC425LP3 / 425LP3E 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz v03.0409 5 ATTENUATORS - DIGITAL - SMT Worst Case Step Error Between Successive Attenuation States 1.2 0.8 STEP ERROR (dB) 0.4 0 -0.4 -0.8 -1.2 1 2 3 4 5 6 7 8 9 10 Bias Voltage & Current Vdd Range = 3.0 to +5.0 Vdc Vdd (VDC) +3.0 +5.0 Idd (Typ.) (μA) 10 30 Control Voltage State Low High Note: Vdd = +3V to +5V Bias Condition 0 to 0.2V @ 10 uA Typ. Vdd ± 0.2V @ 5 uA Typ. FREQUENCY (GHz) Truth Table Control Voltage Input V1 16 dB High High High High High High Low Low V2 8 dB High High High High High Low High Low V3 4 dB High High High High Low High High Low V4 2 dB High High High Low High High High Low V5 1 dB High High Low High High High High Low V6 0.5 dB High Low High High High High High Low 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 - 118 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 HMC425LP3 / 425LP3E 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz v03.0409 Absolute Maximum Ratings Control Voltage (V1 to V6) Bias Voltage (Vdd) Staorage Temperature Operating Temperature RF Input Power (2.4 - 8.0 GHz) ESD Sensitivity (HBM) Vdd +0.5 Vdc +7.0 Vdc -65 to +150 °C -40 to +85 °C +30 dBm Class 1A 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 HMC425LP3 HMC425LP3E 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] 425 XXXX 425 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 - 119 HMC425LP3 / 425LP3E v03.0409 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz 5 ATTENUATORS - DIGITAL - SMT Pin Descriptions Pin 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. Interface Schematic 2, 11 RFIN, RFOUT 4, 5, 6, 7, 8, 9 V1 - V6 See truth table and control voltage table. 13, 14, 16 15 N/C Vdd This pin should be connected to PCB RF ground to maximize performance. Supply Voltage. 5 - 120 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 HMC425LP3 / 425LP3E 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz v03.0409 Evaluation PCB 5 ATTENUATORS - DIGITAL - SMT 5 - 121 * 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 105408 [1] Item J1 - J2 J3 C1 C2, C3 R1 - R6 U1 PCB [2] Description PCB Mount SMA Connector 8 Pin DC Connector 0.01 μF Capacitor, 0603 Pkg. 100 pF Capacitor, 0402 Pkg. 100 Ohm Resistor, 0603 Pkg. HMC425LP3 / HMC425LP3E Digital Attenuator 105260 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