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| HMC540LP3 / 540LP3E 1 dB LSB GaAs MMIC 4-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz v00.0605 Typical Applications Features 1 dB LSB Steps to 15 dB +/- 0.2 dB Typical Step Error Low Insertion Loss: 1.0 dB High IP3: +50 dBm Single Control Line Per Bit TTL/CMOS Compatible Control Single +5V Supply 6 ATTENUATORS - SMT The HMC540LP3 / HMC540LP3E is ideal for both RF and IF applications: * Cellular Infrastructure * ISM, MMDS, WLAN, WiMAX, WiBro * Microwave Radio & VSAT * Test Equipment and Sensors Functional Diagram 3x3 mm SMT Package General Discription The HMC540LP3 & HMC540LP3E are broadband 4-bit GaAs IC digital attenuators in low cost leadless surface mount packages. This single positive control line per bit 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 5.5 GHz, the insertion loss is less than 1.0 dB typical. The attenuator bit values are 1 (LSB), 2, 4 and 8 dB for a total attenuation of 15 dB. Attenuation accuracy is excellent at 0.2 dB typical step error. The attenuator also features a IIP3 of +50 dBm. Four TTL/CMOS control inputs are used to select each attenuation state. A single Vdd bias of +5V is required. Electrical Specifications, TA = +25 C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) Parameter Frequency (GHz) DC - 2.0 GHz 2.0 - 3.0 GHz 3.0 - 4.0 GHz 4.0 -5.5 GHz DC - 5.5 GHz DC - 3.5 GHz 3.5 - 5.5 GHz DC - 1.0 GHz 1.0 - 4.0 GHz 4.0 - 5.0 GHz 5.0 - 5.5 GHz 0.1 - 5.5 GHz REF - 4 dB States 5 - 15 dB States 0.1 - 5.5 GHz Min. Typ. 0.8 1.0 1.3 2.2 15 20 15 (0.2 + 2% of Atten. Setting) Max. (0.2 + 3% of Atten. Setting) Max. (0.3 + 5% of Atten. Setting) Max. (0.4 + 8% of Atten. Setting) Max. 27 50 45 Max. 1.1 1.3 1.6 2.6 Units dB dB dB dB dB dB dB dB dB dB dB dBm dBm dBm Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics All States DC -5.5 GHz tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 95 100 ns ns 6 - 170 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 HMC540LP3 / 540LP3E 1 dB LSB GaAs MMIC 4-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz Return Loss RF1, RF2 Insertion Loss 0 -0.5 INSERTION LOSS (dB) RETURN LOSS (dB) -1 -1.5 -2 -2.5 -3 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) +25 C +85 C -40 C v00.0605 (Only Major States are Shown) 0 -5 -10 I.L.dB 1 dB 2 dB 4 dB 8 dB 15 dB 6 ATTENUATORS - SMT 6 - 171 -15 -20 -25 -30 -35 -40 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) Bit Error vs. Attenuation State 2 1.5 BIT ERROR (dB) 1 0.5 4 GHz -4 5.5 GHz 5 GHz -8 -12 0 -0.5 1 GHz 100 MHz -16 -20 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) -1 0 4 8 12 16 ATTENUATION STATE (dB) Bit Error vs. Frequency (Only Major States are Shown) 1.5 Relative Phase vs. Frequency (Only Major States are Shown) 40 30 RELATIVE PHASE (deg) 1 BIT ERROR (dB) 15 dB 20 8 dB 0.5 1-4 dB 10 0 -10 -20 -30 1-4 dB 0 -0.5 15 dB 8 dB -1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) -40 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 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 HMC540LP3 / 540LP3E 1 dB LSB GaAs MMIC 4-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz Worst Case Step Error Between Successive Attenuation States v00.0605 6 STEP ERROR (dB) 0.4 0.3 0.2 ATTENUATORS - SMT 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) Bias Voltage & Current Vdd = +5.0 Vdc 10% Vdd (VDC) +4.5 +5.0 +5.5 Idd (Typ.) (mA) 3.0 3.2 3.4 Truth Table Control Voltage Input V1 8 dB High High High High V2 4 dB High High High Low High Low V3 2 dB High High Low High High Low V4 1 dB High Low High High High Low Attenuation State RF1 - RF2 Reference I.L. 1 dB 2 dB 4 dB 8 dB 15 dB Control Voltage State Low High Note: Vdd = +5V Bias Condition 0 to +0.8V @ -5 uA Typ. +2.0 to + 5.0 Vdc @ 40 uA Typ. Low Low Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 6 - 172 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 HMC540LP3 / 540LP3E 1 dB LSB GaAs MMIC 4-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz v00.0605 Absolute Maximum Ratings RF Input Power (DC - 5.5 GHz) Control Voltage Range (V1 to V4) Bias Voltage (Vdd) Channel Temperature Continuous Pdiss (T = 85 C) (derate 11.7 mW/C above 85 C) Thermal Resistance Storage Temperature Operating Temperature +29 dBm (T = +85 C) -1V to Vdd +1V +7.0 Vdc 150 C 0.769 W 85 C/W -65 to +150 C -40 to +85 C ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS 6 ATTENUATORS - SMT Outline Drawing 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 HMC540LP3 HMC540LP3E Package Body Material Low Stress Injection Molded Plastic RoHS-compliant Low Stress Injection Molded Plastic Lead Finish Sn/Pb Solder 100% matte Sn MSL Rating MSL1 MSL1 [1] Package Marking [3] 540 XXXX 540 XXXX [2] [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 6 - 173 HMC540LP3 / 540LP3E 1 dB LSB GaAs MMIC 4-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz v00.0605 Pin Descriptions 6 ATTENUATORS - SMT Pin Number 1 Function Vdd Description Supply Voltage. This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required. Select value based on lowest frequency of operation. Interface Schematic 2, 11 RF1, RF2 3, 7, 9, 10, 12 N/C These pins should be connected to PCB RF ground to maximize performance. 4 - 6, 8 ACG1 - ACG4 External capacitor to ground is required. Select value for lowest frequency of operation. Place capacitor as close to pins as possible. 13 - 16 V1 - V4 See truth table and control voltage table. GND Package bottom has an exposed metal paddle that must be connected to RF/DC Ground. Application Circuit Recommended Component Values C1 - C3 C4, C5 1,000 pF 10% 330 pF 10% 6 - 174 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 HMC540LP3 / 540LP3E 1 dB LSB GaAs MMIC 4-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz v00.0605 Evaluation PCB 6 ATTENUATORS - SMT List of Materials for Evaluation PCB 111315 [1] Item J1 - J2 J3 - J8 C1 - C3 C4, C5 U1 PCB [2] Description PCB Mount SMA Connector DC Pin 1000 pF Capacitor, 0402 Pkg. 330 pF Capacitor, 0402 Pkg. HMC540LP3 / HMC540LP3E Digital Attenuator 111291 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 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. 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 6 - 175 |
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