HMC470LP3

HMC470LP3 / 470LP3E 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz Designer’s Kit Available v02.0605 Typical Applications Features 1 dB LSB Steps to 31 dB Single Control Line Per Bit TTL/CMOS Compatible Control +/- 0.3 dB Typical Step Error Single +5V Supply 3 x 3 mm SMT Package Included in the HMC-DK004 Designer’s Kit 6 ATTENUATORS - SMT The HMC470LP3 /HMC470LP3E is ideal for both RF and IF applications: • Cellular; UMTS/3G Infrastructure • ISM, MMDS, WLAN, WiMAX • Microwave Radio & VSAT • Test Equipment and Sensors Functional Diagram General Description The HMC470LP3 & HMC470LP3E are broadband 5-bit GaAs IC digital attenuators in low cost leadless surface mount packages. This single positive control line per bit digital attenuator incorporates off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering DC to 3.0 GHz, the insertion loss is less than 1.5 dB typical. The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Attenuation accuracy is excellent at ± 0.3 dB typical step error with an IIP3 of +45 dBm. Five 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 Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) All Attenuation States 1.0 - 15.0 dB States 16.0 - 31.0 dB States Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics DC - 3.0 GHz tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 160 180 ns ns REF - 15 dB States 16 - 31 dB States Frequency (GHz) DC - 1.5 GHz 1.5 - 2.3 GHz 2.3 - 3.0 GHz DC - 3.0 GHz DC - 3.0 GHz Min. Typ. 1.3 1.4 1.7 31 17 Max. 1.6 1.7 2.0 Units dB dB dB dB dB DC - 2.3 GHz 2.3 - 3.0 GHz 2.3 - 3.0 GHz 0.1 - 3.0 GHz 0.1 - 3.0 GHz ± (0.3 + 2% of Atten. Setting) Max. ± (0.3 + 3% of Atten. Setting) Max. ± (0.3 + 6% of Atten. Setting) Max. 20 45 35 dB dB dB dBm dBm dBm 6 - 144 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 HMC470LP3 / 470LP3E v02.0605 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.0 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 FREQUENCY (GHz) +25 C +85 C -40 C (Only Major States are Shown) 0 -5 -10 16 dB 8 dB I.L.dB 6 ATTENUATORS - SMT 6 - 145 -15 -20 -25 -30 1 dB 4 dB 2 dB 31 dB -35 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) -5 BIT ERROR (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) Bit Error vs. Attenuation State 2 3 GHz 1.5 1 0.5 0 -0.5 -1 0 4 8 12 16 20 24 28 32 ATTENUATION STATE (dB) 40 MHz 500 MHz 1 GHz 2 GHz 100 MHz Bit Error vs. Frequency (Only Major States are Shown) 2 1.5 1 BIT ERROR (dB) 0.5 0 -0.5 -1 -1.5 -2 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) 1-8 dB 31 dB 16 dB Relative Phase vs. Frequency (Only Major States are Shown) 100 80 RELATIVE PHASE (deg) 60 31 dB 40 20 0 -20 16 dB 8 dB -40 0 0.5 1 1.5 2 2.5 3 FREQUENCY (GHz) 1-4 dB 3.5 4 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 HMC470LP3 / 470LP3E 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz Worst Case Step Error Between Successive Attenuation States v02.0605 6 STEP ERROR (dB) 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) ATTENUATORS - SMT Bias Voltage & Current Vdd = +5.0 Vdc ± 10% Vdd (VDC) +4.5 +5.0 +5.5 Idd (Typ.) (mA) 4.0 4.2 4.4 Truth Table Control Voltage Input V1 16 dB High High High High V2 8 dB High High High High Low High Low V3 4 dB High High High Low High High Low V4 2 dB High High Low High High High Low V5 1 dB High Low High High High High Low Attenuation State RF1 - RF2 Reference I.L. 1 dB 2 dB 4 dB 8 dB 16 dB 31 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. High Low Low Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 6 - 146 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 HMC470LP3 / 470LP3E 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz v02.0605 Absolute Maximum Ratings RF Input Power (DC - 3.0 GHz) Control Voltage Range (V1 to V5) Bias Voltage (Vdd) Channel Temperature Continuous Pdiss (T = 85 °C) (derate 7.7 mW/°C above 85 °C) Thermal Resistance Storage Temperature Operating Temperature +27 dBm (T = +85 °C) -1V to Vdd +1V +7.0 Vdc 150 °C 0.5 W 130 °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 HMC470LP3 HMC470LP3E 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] 470 XXXX 470 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 - 147 HMC470LP3 / 470LP3E 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz v02.0605 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. These pins should be connected to PCB RF ground to maximize performance. External capacitor to ground is required. Select value for lowest frequency of operation. Place capacitor as close to pins as possible. Interface Schematic 2, 11 RF1, RF2 3, 10 N/C 4-9 ACG1 - ACG6 12 - 16 V1 - V5 See truth table and control voltage table. GND Package bottom has an exposed metal paddle that must also be connected to RF Ground. Application Circuit 6 - 148 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 HMC470LP3 / 470LP3E 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.0 GHz v02.0605 Evaluation PCB 6 ATTENUATORS - SMT List of Materials for Evaluation PCB 107006 [1] Item J1 - J2 J3 C1 C2, C3 C4 - C7 U1 PCB [2] Description PC Mount SMA Connector 12 Pin DC Connector 1000 pF Capacitor, 0603 Pkg. 1000 pF Capacitor, 0402 Pkg. 330 pF Capacitor, 0402 Pkg. HMC470LP3 / HMC470LP3E Digital Attenuator 106978 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. [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350Re 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 - 149