HMC939LP4 / 939LP4E v01.1211 Attenuators - SMT 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Typical Applications Features The HMC939LP4 / HMC939LP4E is ideal for: 1.0 dB LSB Steps to 31 dB • Fiber Optics & Broadband Telecom Single Positive Control Line Per Bit • Microwave Radio & VSAT ±1.0 dB Typical Bit Error • Military Radios, Radar & ECM High Input IP3: +43 dBm • Space Applications 16mm2 Leadless SMT Plastic Package • Sensors • Test & Measurement Equipment Functional Diagram General Description The HMC939LP4 & HMC939LP4E are broadband 5-bit GaAs IC digital attenuators in low cost leadless surface mount packages. Covering 0.1 to 33.0 GHz, the insertion loss is less than 5 dB typical. The attenuator bit values are 1.0 (LSB), 2, 4, 8, 16 for a total attenuation of 31 dB. Attenuation accuracy is excellent at ±0.4 dB typical step error with an IIP3 of +43 dBm. Five control voltage inputs, toggled between +5V and 0V, are used to select each attenuation state. Electrical Specifications, TA = +25° C, With Vdd = +5V, Vss = -5V, P0 - P4 = 0/ +5V Parameter Frequency (GHz) Typ. Max. Units 0.1 - 18.0 GHz 18.0 - 26.5 GHz 26.5 - 33.0 GHz 4.0 5.5 6.5 5.5 7.0 8.5 dB dB dB Attenuation Range 0.1 - 33.0 GHz 31 dB Return Loss (RF1 & RF2, All Atten. States) 0.1 - 33.0 GHz 12 dB Insertion Loss Attenuation Accuracy: (Referenced to Insertion Loss) 1.0 - 15 dB States 16 - 31 dB States 16 - 31 dB States 0.1 - 33.0 GHz 0.1 - 20.0 GHz 20.0 - 33.0 GHz Min. ± (0.5 + 5%) of Atten. Setting Max ± (0.5 + 5%) of Atten. Setting Max ± (0.6 + 8%) of Atten. Setting Max Input Power for 0.1 dB Compression 0.1 - 0.5 GHz 0.5 - 33.0 GHz 20 25 dBm dBm Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) 0.1 - 0.5 GHz 0.5 - 33.0 GHz 40 43 dBm dBm Switching Characteristics 0.1 - 33.0 GHz 60 90 ns ns tRISE, tFALL (10/90% RF) tON/tOFF (50% CTL to 10/90% RF) 1 dB dB dB Idd 0.1 - 33.0 GHz 2.5 4.5 6.5 mA Iss 0.1 - 33.0 GHz -7.0 -5.0 -3.0 mA For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Normalized Attenuation Insertion Loss vs. Temperature (Only Major States are Shown) 0 INSERTION LOSS (dB) -2 -4 -6 -8 +25 C +85 C -40 C -10 -12 -5 -10 -15 -20 -25 -30 -35 -40 0 5 10 15 20 25 30 35 40 0 5 10 FREQUENCY (GHz) Input Return Loss 25 30 35 40 30 35 40 30 35 40 (Only Major States are Shown) 0 0 -10 -10 RETURN LOSS (dB) RETURN LOSS (dB) 20 Output Return Loss (Only Major States are Shown) -20 -30 -40 -20 -30 -40 -50 -50 0 5 10 15 20 25 30 35 40 0 5 10 FREQUENCY (GHz) 15 20 25 FREQUENCY (GHz) Bit Error vs. Frequency Bit Error vs. Attenuation State (Only Major States are Shown) 3 2.4 5 GHz 10 GHz 18 GHz 26.5 GHz 33 GHz 1.6 2 BIT ERROR (dB) 2 BIT ERROR (dB) 15 FREQUENCY (GHz) Attenuators - SMT NORMALIZED ATTENUATION (dB) 0 1.2 0.8 0.4 0 31 dB 1 0 -1 -2 -0.4 -3 -0.8 0 4 8 12 16 20 ATTENUATION STATE (dB) 24 28 0 5 10 15 20 25 FREQUENCY (GHz) For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] 2 HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Step Attenuation vs. Attenuation State 0.1 - 18 GHz Relative Phase vs. Frequency (Only Major States are Shown) 120 1.6 STEP ATTENUATION (dB) RELATIVE PHASE (deg) 80 31 dB 60 40 20 1.2 0.8 5 GHz 10 GHz 18 GHz 0.4 0 -20 0 5 10 15 20 25 30 35 0 40 0 FREQUENCY (GHz) 4 8 12 24 28 32 30 26 P0.1dB (dBm) 1.2 0.8 0.4 26.5 GHz 33 GHz 0 0 4 8 12 16 20 22 18 +25 C +85 C -40 C 14 10 24 28 6 0.01 32 0.1 Input IP3 Over Major Attenuation States 50 IP3 (dBm) 50 40 30 40 +25 C +85 C -40 C 30 1 FREQUENCY (GHz) 10 100 Input IP3 vs. Temperature 60 0.1 10 (Minimum Attenuation State) 60 20 0.01 1 FREQUENCY (GHz) ATTENUATION STATE (dB) IP3 (dBm) 20 Input Power for 0.1 dB Compression 1.6 -0.4 3 16 ATTENUATION STATE (dB) Step Attenuation vs. Attenuation State 18 - 33 GHz STEP ATTENUATION (dB) Attenuators - SMT 100 100 20 0.01 0.1 1 10 100 FREQUENCY (GHz) For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz RF Input Power (0.1 to 33.0 GHz) +25 dBm Vdd +5V @ 4.5 mA Control Voltage (P0 to P4) Vdd + 0.5V Vss -5V @ 5 mA Vdd +7 Vdc Vss -7 Vdc Channel Temperature 150 °C Continuous Pdiss (T = 85 oC) (derate 6.8 mW/oC above 85 oC) 0.451 W Thermal Resistance 144 °C/W Storage Temperature -65 to + 150 °C Operating Temperature -40 to +85 °C ESD Sensitivity (HBM) Class 1A Control Voltage State Bias Condition Low 0 to 0.8V @ 1 µA High 2 to 5V @ 1 µA ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing Attenuators - SMT Bias Voltages & Currents Absolute Maximum Ratings 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. Package Information Part Number Package Body Material Lead Finish MSL Rating HMC939LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] HMC939LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] Package Marking [3] H939 XXXX H939 XXXX [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] 4 HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Attenuators - SMT Truth Table 5 Control Voltage Input P4 16 dB P3 8 dB P2 4 dB P1 2 dB P0 1 dB Attenuation State RF1 - RF2 High High High High High Reference I.L. High High High High Low 1 dB High High High Low High 2 dB 4 dB High High Low High High High Low High High High 8 dB Low High High High High 16 dB Low Low Low Low Low 31 dB Any Combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. Pin Descriptions Pad Number Function Description 1 Vss Negative Bias -5V 2-4, 6-13, 15-17, 19 N/C The pins are not connected internally; however, all data shown herein was measured with these pins connected to RF/DC ground externally. 5, 14 RF1, RF2 These pins are DC coupled and matched to 50 Ohm. Blocking capacitors are required if RF line potential is not equal to 0V. 18 Vdd Positive Bias +5V 20 - 24 P0 - P4 See truth table and control voltage table. GND Package bottom must be connected to RF/DC ground. Interface Schematic For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Attenuators - SMT Application Circuit For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] 6 HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Attenuators - SMT Evaluation PCB List of Materials for Evaluation PCB 130450 [1] Item Description J1, J2, J4, J5 2.9 mm PC Mount RF Connector J3 DC Connector C1, C2 1000 pF Capacitor, 0402 Pkg. U1 HMC939LP4 Digital Attenuator PCB [2] 131909 Evaluation Board [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 7 The circuit board used in the application should use RF circuit design techniques. Signal lines should have 50 Ohm impedance while the package ground leads 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: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC939LP4 / 939LP4E v01.1211 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 33 GHz Attenuators - SMT Notes: For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] 8