HMC541LP3 541LP3E / v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz 5 Typical Applications Features The HMC541LP3 / HMC541LP3E is ideal for both RF ± 0.2 dB Typical Step Error T and IF applications: M Low Insertion Loss: 1 dB (cid:129) Cellular Infrastructure S High IP3: +50 dBm E - (cid:129) ISM, MMDS, WLAN, WiMAX, WiBro Single Control Line S (cid:129) Microwave Radio & VSAT TTL/CMOS Compatible Control R (cid:129) Test Equipment and Sensors Single +5V Supply T O 3x3 mm SMT Package T A U Functional Diagram General DesEcription N The HMC541LP3 & HMC541LP3E are broadband E 1-bit GaAs IC digital attenuators in low cost lead- T T less Lsurface mount packages. This single posi- A tive control line digital attenuator utilizes off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF O applications. Covering DC to 5 GHz, the insertion loss is less than 1 dB typical. Attenuation accuracy is excellent at ± 0.2 dB typical step error. The attenu- ator also features a high IIP3 of +50 dBm. One TTL/ S CMOS control input is used to select the attenuation state. A single Vdd bias of +5V is required. B 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 - 2.0 GHz 0.5 0.8 dB Insertion Loss 2.0 - 3.5 GHz 1.0 1.3 dB 3.5 - 5.0 GHz 2.0 2.3 dB Attenuation Range DC - 5 GHz 10 dB DC - 2.5 GHz 25 dB Return Loss (RF1 & RF2, All Atten. States) 2.5 - 5.0 GHz 15 dB Attenuation Accuracy: (Referenced to Insertion Loss) DC - 5 GHz ± 0.4 Max. dB Input Power for 0.1 dB Compression 0.1 - 5.0 GHz 27 dBm Input Third Order Intercept Point 0.1 - 5.0 GHz 50 dBm (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics DC - 5 GHz tRISE, tFALL (10/90% RF) 20 ns tON, tOFF (50% CTL to 10/90% RF) 23 ns For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 176 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz 5 Insertion Loss Return Loss RF1, RF2 0 0 T M dB) -1 B) -10 I.L.dB E S SS ( S (d O S 10 dB - NSERTION L --32 ++-428055 CCC RETURN LO --3200 T ORS I T A -4 -40 E U 0 1 2 3 4 5 6 0 1 2 3 4 5 6 N FREQUENCY (GHz) FREQUENCY (GHz) E T L T A Normalized Attenuation Relative Phase vs. Frequency 0 40 TION (dB) -2 O deg) 2300 TTENUA --64 PHASE ( 100 D A S VE E TI -10 Z -8 A MALI REL -20 R -10 O -30 N B -12 -40 0 1 2 3 4 5 6 0 1 2 3 4 5 6 FREQUENCY (GHz) FREQUENCY (GHz) O Bit Error vs. Frequency Input IP3 vs. Frequency 1 60 50 0.6 B) 40 d R ( 0.2 m) O B RR 3 (d 30 BIT E-0.2 IP 20 I .1L0. ddBB -0.6 10 -1 0 0 1 2 3 4 5 6 0 1 2 3 4 5 6 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 - 177 Order On-line at www.hittite.com

HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz 5 Bias Voltage & Current Truth Table Vdd = +5.0 Vdc ± 10% Control Voltage Input T Attenuation State M Vdd Idd (Typ.) V1 RF1 - RF2 (VDC) (mA) 10 dB S E +4.5 1.3 High Reference I.L. - +5.0 1.5 Low 10 dB S +5.5 1.7 R T O T Control Voltage A U State Bias Condition E N Low 0 to +0.8V @ -5 uA Typ. E High +2.0 to + 5.0 Vdc @ 40 uA Typ. T Note: Vdd = +5V T L A O S B O For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 178 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz 5 Absolute Maximum Ratings RF Input Power (DC - 5 GHz) +27 dBm (T = +85 °C) ELECTROSTATIC SENSITIVE DEVICE T Control Voltage Range (V1) -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 14.7 mW/°C above 85 °C) 0.96 W S R Thermal Resistance 68 °C/W T O Storage Temperature -65 to +150 °C T Operating Temperature -40 to +85 °C A ESD Sensitivity (HBM) Class 1B E U N E Outline Drawing T L T A O S B NOTES: O 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] HMC541LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 541 XXXX HMC541LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 541 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 - 179 Order On-line at www.hittite.com

HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz 5 Pin Descriptions T Pin Number Function Description Interface Schematic M 1 Vdd Supply Voltage. S E - This pin is DC coupled and matched to 50 Ohm. S 2, 11 RF1, RF2 Blocking capacitors are required. Select value based on lowest frequency of operation. R T O 3, 4, 6, 7, These pins should be connected to PCB RF ground to T 9, 10, 12, N/C maximize performance. A 13, 15, 16 U E N External capacitor to ground is required. Select value for 5, 8 ACG1, ACG2 lowest frequency of operation. Place capacitor as close E to pins as possible. T T L A 14 V1 See truth table and control voltage table. O GND PackagSe bottom has an exposed metal paddle that must be connected to RF Ground. Application Circuit B O Recommended Component Values C1 - C3 1,000 pF ± 10% C4, C5 330 pF ± 10% For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 180 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 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 Material for Evaluation PCB 111317 [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 - J5 DC Connector ground leads and exposed paddle should be con- C1 - C3 1000 pF Capacitor, 0402 Pkg. nected directly to the ground plane similar to that C4 - C5 330 pF Capacitor, 0402 Pkg. shown. A sufficient number of via holes should be HMC541LP3 / HMC541LP3E U1 Digital Attenuator used to connect the top and bottom ground planes. PCB [2] 111290 Evaluation PCB The evaluation circuit board shown is available from [1] Reference this number when ordering complete evaluation PCB Hittite upon request. [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 - 181 Order On-line at www.hittite.com