HMC539LP3 539LP3E / v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Typical Applications Features The HMC539LP3 / HMC539LP3E is ideal for both RF 0.25 dB LSB Steps to 7.75 dB T and IF applications: M ± 0.05 dB Typical Step Error (cid:129) Cellular Infrastructure S Low Insertion Loss: 0.7 dB E - (cid:129) ISM, MMDS, WLAN, WiMAX, WiBro High IP3: +50 dBm S (cid:129) Microwave Radio & VSAT Single Control Line Per Bit R (cid:129) Test Equipment and Sensors TTL/CMOS Compatible CoTntrol O Single +5V Supply T A Functional Diagram 3x3 mm SMT Package U E N General Discription E T The HMC539LP3 & HMC539LP3E are broadband T L 5-bit GaAs IC digital attenuators in low cost lead- A less surface mount packages. This single positive control line per bit digital attenuator utilizes an off O chip AC ground capacitor for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering DC to 4 GHz, the insertion loss is less than 0.7 dB typical. The attenuator bit values S are 0.25 (LSB), 0.5, 1, 2, and 4 dB for a total attenu- ation of 7.75 dB. Attenuation accuracy is excellent at ± 0.05 dB typical step error. The attenuator also features a high IIP3 of +50 dBm. Five TTL/CMOS B control inputs are used to select each attenuation state. A single Vdd bias of +5V is required. O Electrical Specifi cations, T = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) A Parameter Frequency (GHz) Min. Typ. Max. Units DC - 1.5 GHz 0.7 1.0 dB Insertion Loss 1.5 - 3.0 GHz 1.0 1.3 dB 3.0 - 4.0 GHz 1.3 1.7 dB Attenuation Range DC - 4 GHz 7.75 dB DC - 3 GHz 25 dB Return Loss (RF1 & RF2, All Atten. States) 3.0 - 4.0 GHz 20 dB Attenuation Accuracy: DC - 3 GHz ± (0.2 + 2% of Atten. Setting) Max. dB All States (Referenced to Insertion Loss) 3.0 - 4.0 GHz ± (0.2 + 4% of Atten. Setting) Max. dB Input Power for 0.1 dB Compression 0.1 - 4.0 GHz 28 dBm Input Third Order Intercept Point 0.1 - 4.0 GHz 50 dBm (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics DC - 4 GHz tRISE, tFALL (10/90% RF) 48 ns tON, tOFF (50% CTL to 10/90% RF) 52 ns For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 164 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Return Loss RF1, RF2 Insertion Loss (Only Major States are Shown) 0 0 T -0.5 M -9 dB) B) E S OSS ( -1 SS (d -18 I.L.dB0.25 dB 0.5 dB 2 dB 1 dB4 dB 7.75 dB - ON L-1.5 N LO S NSERTI -2 ++-428055 CCC RETUR -27 T OR I -36 -2.5 T A -3 -45 E U 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 N FREQUENCY (GHz) FREQUENCY (GHz) E T Normalized Attenuation L T (Only Major States are Shown) Bit Error vs. Attenuation State A 0 0.5 B) O d N ( -2 3 GHz 4 GHz 40 MHz O 0.25 ATI B) U d TTEN -4 ROR ( 0 A S R ED -6 T E LIZ BI A -0.25 100 MHz 2 GHz ORM -8 1 GHz 500 MHz N B -10 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 1 2 3 4 5 6 7 8 FREQUENCY (GHz) ATTENUATION STATE (dB) O Bit Error vs. Frequency Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 0.35 20 15 0.25 eg) 10 7.75 dB R (dB) 0.15 0.25 dB 0.5 dB ASE (d 5 4 dB 2 dB O H R 0.05 P 0 R E E V T TI -5 BI-0.05 A L RE -10 0.25-1 dB -0.15 2 dB 4 dB 1 dB -15 7.75 dB -0.25 -20 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 FREQUENCY (GHz) 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 5 - 165 Order On-line at www.hittite.com

HMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Worst Case Step Error Between Successive Attenuation States 0.25 T M 0.15 S B) E d - OR ( 0.05 R S R E R P -0.05 TE T O S -0.15 T A U -0.25 E 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 N FREQUENCY (GHz) E T T L A Bias Voltage & Current Truth Table Vdd = +5.0 Vdc ± 10% Control Voltage Input Attenuation Vdd Idd (Typ.) O V1 V2 V3 V4 V5 State (VDC) (mA) 4 dB 2 dB 1 dB 0.5 dB 0.25 dB RF1 - RF2 +4.5 3.3 Reference High High High High High I.L. +5.0 3.5 High High High High Low 0.25 dB +5.5 3.7 S High High High Low High 0.5 dB High High Low High High 1 dB Control Voltage High Low High High High 2 dB State Bias ConditionB Low High High High High 4 dB Low 0 to +0.8V @ -5 uA Typ. Low Low Low Low Low 7.75 dB High +2.0 to + 5.0 Vdc @ 30 uA Typ. Any combination of the above states will provide an attenuation Note: Vdd = +5V approximately equal to the sum of the bits selected. O For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 166 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Absolute Maximum Ratings RF Input Power (DC - 4 GHz) +29 dBm (T = +85 °C) ELECTROSTATIC SENSITIVE DEVICE T Control Voltage Range (V1 to V5) -1V to Vdd +1V M OBSERVE HANDLING PRECAUTIONS Bias Voltage (Vdd) +7.0 Vdc E S Channel Temperature 150 °C - Continuous Pdiss (T = 85 °C) (derate 12.0 mW/°C above 85 °C) 0.781 W S R Thermal Resistance 83 °C/W T O Storage Temperature -65 to +150 °C T Operating Temperature -40 to +85 °C A ESD Sensitivity (HBM) Class 1A E U N Outline Drawing E T L T A O S B O 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] HMC539LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 539 XXXX HMC539LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 539 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 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 5 - 167 Order On-line at www.hittite.com

HMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Pin Descriptions Pin Number Function Description Interface Schematic T M 1 Vdd Supply Voltage. S E This pin is DC coupled and matched to 50 Ohm. - 2, 11 RF1, RF2 Blocking capacitors are required. S Select value based on lowest frequency of operation. R These pins should be connected to PCB RF ground to T O 3, 9, 10 N/C maximize performance. T A External capacitor to ground is required. Select value for U 4 - 8 ACG1 - ACG5 lowest frequency of operation. Place capacitor asE close to pins as possible. N E T T L A 12 - 16 V1 - V5 See truth table and control voltage table. O Package bottom has an exposed metal paddle that must be GND connected to RF Ground. S Application Circuit B O Recommended Component Values C1, C2 100 pF ± 10% C3 1,000 pF ± 10% C4 330 pF ± 10% R1 - R5 100 Ohm ± 10% For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 168 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Evaluation PCB T M E S - S R T O T A E U N E T L T A O S B O List of Materials for Evaluation PCB 110078 [1] The circuit board used in the fi nal application should Item Description use RF circuit design techniques. Signal lines J1 - J2 PCB Mount SMA Connector should have 50 ohm impedance while the package J3 - J9 DC Pin ground leads and exposed paddle should be con- C1, C2 100 pF Capacitor, 0402 Pkg. nected directly to the ground plane similar to that C3 1000 pF Capacitor, 0402 Pkg. shown. A sufficient number of via holes should be C4 330 pF Capacitor, 0402 Pkg. used to connect the top and bottom ground planes. R1 - R5 100 Ohm Resistor 0402 The evaluation circuit board shown is available from HMC539LP3 / HMC539LP3E U1 Digital Attenuator Hittite upon request. PCB [2] 110076 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 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 5 - 169 Order On-line at www.hittite.com