HMC346LP3 346LP3E / v05.1008 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz 5 Typical Applications Features The HMC346LP3 / HMC346LP3E is ideal for: Wide Bandwidth: DC - 14 GHz T M • Basestation Infrastructure Low Phase Shift vs. Attenuation S • Fiber Optics & Broadband Telecom 30 dB Attenuation Range - • Microwave Radio & VSAT Simplifi ed Voltage Control S • Military Radios, Radar, & ECM 3 x 3 x 1 mm SMT Package R O • Test Instrumentation T A Functional Diagram General Description U N The HMC346LP3 & HMC346LP3E are pabsorp- E tive Voltage Variable Attenuators (VVA) in low cost T leadless surface mount plastic packages operating T from DC - 14 GHz. It features an on-chip reference A attenuator for use with an external op-amp to provide simple single voltage attenuation control, 0 to -3V. The device is ideal in designs where an analog DC control signal must control RF signal levels over a 30 dB amplitude range. This VVA is an excellent alterna- tive to the HMC121C8. Electrical Specifi cations, T = +25° C, 50 ohm system A Parameter Min Typical Max Units DC - 10 GHz 1.7 2.2 dB Insertion Loss DC - 14 GHz 2.8 3.3 dB DC - 10 GHz 27 30 dB Attenuation Range DC - 14 GHz 22 27 dB Return Loss DC - 14 GHz 5 10 dB tRISE, tFALL (10/90% RF): 2 ns Switching Characteristics tON, tOFF (50% CTL to 10/90% RF): 8 ns Min. Atten: +8 dBm Input Power for 0.25 dB Compression (0.5 - 8 GHz) Atten. >2 dB: -4 dBm Input Third Order Intercept (0.5 - 8 GHz) Min. Atten: +25 dBm (Two-tone Input Power = -8 dBm Each Tone) Atten. >2 dB: +10 dBm Information furnisheFd obry Apnrailcoge D, edviceelsi vise breylie,v eadn tdo bteo a cpcluaractee a nod rrdelieabrlse., Hpowleevaers, eno coFnotra pcritc eH, idtteiltieve rMy, iacnrdo wtoa pvlaec eC oorrdperosr: aAtnioalnog: Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 5 - 96 rights of third parties tha2t 0ma yA relpsuhlt faro mR itos uasde. ,S pCechifiecaltmionss fsoubrjedct, toM chAan g0e1 w8ith2ou4t nPotihceo. Nnoe : P9h7o8n-e2: 75801--332394-437 0 0F (cid:127)a Ox:r d9e7r o8n-l2in5e 0at- w33w7w3.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their resOpercdtivee orw Onerns.-line at www.hAiptptilticea.tcioonm Support: Phone: 1-800-ANALOG-D

HMC346LP3 / 346LP3E v05.1008 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz 5 Insertion Loss vs. Temperature Relative Attenuation 0 0 T M dB) -1 B) -10 S OSS ( ON (d - N L -2 ATI -20 S O U RTI EN R NSE -3 + -2450 CC ATT -30 O I +85 C T A -4 -40 U 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 N FREQUENCY (GHz) FREQUENCY (GHz) E T Relative Attenuation vs. T A Return Loss vs. Attenuation Control Voltage @ 10 GHz 0 0 -5 -0.5 V1 c) V2 d dB)-10 E (V -1 OSS (-15 LTAG -1.5 L O RN -20 L V TU RO -2 E-25 T R MIN N -30 5M dABX CO -2.5 -35 -3 0 2 4 6 8 10 12 14 16 0 5 10 15 20 25 30 FREQUENCY (GHz) RELATIVE ATTENUATION (dB) Relative Phase Input IP3 vs. Attenuation* 180 30 5 dB 150 10 dB 25 G) 1250 ddBB E (DE120 23m50a ddxBB Bm) 20 S d E PHA 90 T IP3 ( 15 V U LATI 60 INP 10 E 0 dB R 30 5 3 dB 6 dB 10 dB 0 0 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) FREQUENCY (GHz) *Two-tone input power = -8 dBm each tone, 1 MHz spacing. Information furnisheFd obry Apnrailcoge D, edviceelsi vise breylie,v eadn tdo bteo a cpcluaractee a nod rrdelieabrlse., Hpowleevaers, eno coFnotra pcritc eH, idtteiltieve rMy, iacnrdo wtoa pvlaec eC oorrdperosr: aAtnioalnog: Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties tha2t 0ma yA relpsuhlt faro mR itos uasde. ,S pCechifiecaltmionss fsoubrjedct, toM chAan g0e1 w8ith2ou4t nPotihceo. Nnoe : P9h7o8n-e2: 75801--332394-437 0 0F (cid:127)a Ox:r d9e7r o8n-l2in5e 0at- w33w7w3.analog.com 5 - 97 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their resOpercdtivee orw Onerns.-line at www.hAiptptilticea.tcioonm Support: Phone: 1-800-ANALOG-D

HMC346LP3 / 346LP3E v05.1008 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz 5 Second Harmonic Input IP2 vs. Attenuation* vs. Attenuation, Pin = -8 dBm 70 80 T M 60 70 c) B S d m) 50 C ( 60 S - P2 (dB 40 RMONI 50 OR INPUT I 30 036 dddBBB ECOND HA 40 036 dddBBB T 20 10 dB S 30 10 dB A U 10 20 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 N FREQUENCY (GHz) FREQUENCY (GHz) E T T A 0.25 dB Compression vs. Attenuation 1 dB Compression vs. Attenuation 15 20 10 15 Bm) m) T 0.25dB (d 05 60 ddBB (REF) UT P1dB (dB 150 U P P N N I I -5 0 0 dB (REF) 6 dB -10 -5 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) FREQUENCY (GHz) *Two-tone input power = -8 dBm each tone, 1 MHz spacing. Information furnisheFd obry Apnrailcoge D, edviceelsi vise breylie,v eadn tdo bteo a cpcluaractee a nod rrdelieabrlse., Hpowleevaers, eno coFnotra pcritc eH, idtteiltieve rMy, iacnrdo wtoa pvlaec eC oorrdperosr: aAtnioalnog: Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 5 - 98 rights of third parties tha2t 0ma yA relpsuhlt faro mR itos uasde. ,S pCechifiecaltmionss fsoubrjedct, toM chAan g0e1 w8ith2ou4t nPotihceo. Nnoe : P9h7o8n-e2: 75801--332394-437 0 0F (cid:127)a Ox:r d9e7r o8n-l2in5e 0at- w33w7w3.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their resOpercdtivee orw Onerns.-line at www.hAiptptilticea.tcioonm Support: Phone: 1-800-ANALOG-D

HMC346LP3 / 346LP3E v05.1008 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz 5 Absolute Maximum Ratings RF Input Power +18 dBm ELECTROSTATIC SENSITIVE DEVICE T Control Voltage Range +1 to -5V M OBSERVE HANDLING PRECAUTIONS Storage Temperature -65 to +150 °C S Operating Temperature -40 to +85 °C - ESD Sensitivity (HBM) Class 1A S R O T A U N Outline Drawing E T T A 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 Package Marking [3] HMC346LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 346 XXXX HMC346LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 346 XXXX [1] Max peak refl ow temperature of 235 °C [2] Max peak refl ow temperature of 260 °C [3] 4-Digit lot number XXXX Information furnisheFd obry Apnrailcoge D, edviceelsi vise breylie,v eadn tdo bteo a cpcluaractee a nod rrdelieabrlse., Hpowleevaers, eno coFnotra pcritc eH, idtteiltieve rMy, iacnrdo wtoa pvlaec eC oorrdperosr: aAtnioalnog: Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties tha2t 0ma yA relpsuhlt faro mR itos uasde. ,S pCechifiecaltmionss fsoubrjedct, toM chAan g0e1 w8ith2ou4t nPotihceo. Nnoe : P9h7o8n-e2: 75801--332394-437 0 0F (cid:127)a Ox:r d9e7r o8n-l2in5e 0at- w33w7w3.analog.com 5 - 99 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their resOpercdtivee orw Onerns.-line at www.hAiptptilticea.tcioonm Support: Phone: 1-800-ANALOG-D

HMC346LP3 / 346LP3E v05.1008 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz 5 Pin Descriptions Pin Number Function Description Interface Schematic T M Package bottom has exposed metal paddle that must also be 1, 3, 7, 10, 12 GND connected to PCB RF ground. S - RF1 This pin is DC coupled and matched to 50 Ohm. Blocking 2, 11 capacitors are required if the RF line potential is not equal to S RF2 0V. R O 4, 9, 13, 14, 15, 16 N/C This pin should be connected to PCB RF ground. T A U N 5, 8 V2, V1 Control input (master). E T T A 6 I Control input (slave). Single-Line Control Driver External op-amp control circuit maintains impedance match while attenuation is varied. Input control ranges from 0 Volts (min. attenuation) to -3.0 Volts (max. attenuation.) Information furnisheFd obry Apnrailcoge D, edviceelsi vise breylie,v eadn tdo bteo a cpcluaractee a nod rrdelieabrlse., Hpowleevaers, eno coFnotra pcritc eH, idtteiltieve rMy, iacnrdo wtoa pvlaec eC oorrdperosr: aAtnioalnog: Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 5 - 100 rights of third parties tha2t 0ma yA relpsuhlt faro mR itos uasde. ,S pCechifiecaltmionss fsoubrjedct, toM chAan g0e1 w8ith2ou4t nPotihceo. Nnoe : P9h7o8n-e2: 75801--332394-437 0 0F (cid:127)a Ox:r d9e7r o8n-l2in5e 0at- w33w7w3.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their resOpercdtivee orw Onerns.-line at www.hAiptptilticea.tcioonm Support: Phone: 1-800-ANALOG-D

HMC346LP3 / 346LP3E v05.1008 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz 5 Evaluation PCB T M S - S R O T A U N E T T A List of Materials for Evaluation PCB 105709 [1] The circuit board used in the fi nal application Item Description should be generated with proper RF circuit design J1 - J2 PCB Mount SMA RF Connector techniques. Signal lines at the RF ports should be J3 - J6 DC Pin 50 ohm impedance and the package ground leads U1 HMC346LP3 / HMC346LP3E VVA and package bottom should be connected directly PCB [2] 105695 Evaluation PCB to the PCB RF ground plane, similar to that shown [1] Reference this number when ordering complete evaluation PCB above. The evaluation circuit board shown above is [2] Circuit Board Material: Rogers 4350 available from Hittite Microwave Corporation upon request. Information furnisheFd obry Apnrailcoge D, edviceelsi vise breylie,v eadn tdo bteo a cpcluaractee a nod rrdelieabrlse., Hpowleevaers, eno coFnotra pcritc eH, idtteiltieve rMy, iacnrdo wtoa pvlaec eC oorrdperosr: aAtnioalnog: Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties tha2t 0ma yA relpsuhlt faro mR itos uasde. ,S pCechifiecaltmionss fsoubrjedct, toM chAan g0e1 w8ith2ou4t nPotihceo. Nnoe : P9h7o8n-e2: 75801--332394-437 0 0F (cid:127)a Ox:r d9e7r o8n-l2in5e 0at- w33w7w3.analog.com 5 - 101 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their resOpercdtivee orw Onerns.-line at www.hAiptptilticea.tcioonm Support: Phone: 1-800-ANALOG-D