HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz ATTENUATORS - SMT 5 Typical Applications Features The HMC541LP3 / HMC541LP3E is ideal for both RF and IF applications: ± 0.2 dB Typical Step Error • Cellular Infrastructure High IP3: +50 dBm • ISM, MMDS, WLAN, WiMAX, WiBro Single Control Line • Microwave Radio & VSAT TTL/CMOS Compatible Control • Test Equipment and Sensors Single +5V Supply Low Insertion Loss: 1 dB 3x3 mm SMT Package Functional Diagram General Description The HMC541LP3 & HMC541LP3E are broadband 1-bit GaAs IC digital attenuators in low cost leadless surface mount packages. This single positive 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 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 attenuator also features a high IIP3 of +50 dBm. One TTL/ CMOS control input is used to select the attenuation state. A single Vdd bias of +5V is required. Electrical Specifi cations, TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) Parameter Frequency (GHz) DC - 2.0 GHz 2.0 - 3.5 GHz 3.5 - 5.0 GHz Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) Min. Typ. Max. Units 0.5 1.0 2.0 0.8 1.3 2.3 dB dB dB DC - 5 GHz 10 dB DC - 2.5 GHz 2.5 - 5.0 GHz 25 15 dB dB 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 (Two-Tone Input Power= 0 dBm Each Tone) 0.1 - 5.0 GHz 50 dBm 20 23 ns ns Switching Characteristics DC - 5 GHz tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 5 - 176 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 Order On-line at www.hittite.com HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz 0 -1 -10 +25 C +85 C -40 C -2 -3 I.L.dB 10 dB -20 -30 -40 0 1 2 3 4 5 6 0 1 FREQUENCY (GHz) 3 4 5 6 5 6 5 6 FREQUENCY (GHz) Normalized Attenuation Relative Phase vs. Frequency 0 40 30 -2 RELATIVE PHASE (deg) NORMALIZED ATTENUATION (dB) 2 ATTENUATORS - SMT 0 -4 -4 -6 -8 -10 20 10 0 -10 -20 -30 -40 -12 0 1 2 3 4 5 6 0 1 2 3 4 FREQUENCY (GHz) FREQUENCY (GHz) Bit Error vs. Frequency Input IP3 vs. Frequency 60 1 50 0.6 40 IP3 (dBm) BIT ERROR (dB) 5 Return Loss RF1, RF2 RETURN LOSS (dB) INSERTION LOSS (dB) Insertion Loss 0.2 -0.2 30 I.L. dB 10 dB 20 -0.6 10 -1 0 0 1 2 3 4 FREQUENCY (GHz) 5 6 0 1 2 3 4 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 Order On-line at www.hittite.com 5 - 177 HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz ATTENUATORS - SMT 5 5 - 178 Bias Voltage & Current Truth Table Vdd = +5.0 Vdc ± 10% Vdd (VDC) Control Voltage Input Attenuation State RF1 - RF2 Idd (Typ.) (mA) V1 10 dB +4.5 1.3 High Reference I.L. +5.0 1.5 Low 10 dB +5.5 1.7 Control Voltage State Bias Condition Low 0 to +0.8V @ -5 uA Typ. High +2.0 to + 5.0 Vdc @ 40 uA Typ. Note: Vdd = +5V 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 Order On-line at www.hittite.com HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz RF Input Power (DC - 5 GHz) +27 dBm (T = +85 °C) Control Voltage Range (V1) -1V to Vdd +1V Bias Voltage (Vdd) +7.0 Vdc Channel Temperature 150 °C Continuous Pdiss (T = 85 °C) (derate 14.7 mW/°C above 85 °C) 0.96 W Thermal Resistance 68 °C/W Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C ESD Sensitivity (HBM) Class 1B ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing ATTENUATORS - SMT 5 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 HMC541LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC541LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] 541 XXXX [2] 541 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, 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 - 179 HMC541LP3 / 541LP3E v01.1005 10 dB GaAs MMIC 1-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5 GHz ATTENUATORS - SMT 5 Pin Descriptions Pin Number Function Description 1 Vdd Supply Voltage. 2, 11 RF1, RF2 This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required. Select value based on lowest frequency of operation. 3, 4, 6, 7, 9, 10, 12, 13, 15, 16 N/C These pins should be connected to PCB RF ground to maximize performance. 5, 8 ACG1, ACG2 External capacitor to ground is required. Select value for lowest frequency of operation. Place capacitor as close to pins as possible. 14 V1 See truth table and control voltage table. GND Package bottom has an exposed metal paddle that must be connected to RF Ground. Interface Schematic Application Circuit Recommended Component Values 5 - 180 C1 - C3 1,000 pF ± 10% C4, C5 330 pF ± 10% 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 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 ATTENUATORS - SMT Evaluation PCB List of Material for Evaluation PCB 111317 [1] Item Description J1 - J2 PCB Mount SMA Connector J3 - J5 DC Connector C1 - C3 1000 pF Capacitor, 0402 Pkg. C4 - C5 330 pF Capacitor, 0402 Pkg. U1 HMC541LP3 / HMC541LP3E Digital Attenuator PCB [2] 111290 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB 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. [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 Order On-line at www.hittite.com 5 - 181