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HMC881LP5E v01.0110 FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz 3 FILTERS - TUNABLE - SMT Typical Applications The HMC881LP5E is ideal for: * Test & Measurement Equipment * Military, RADAR & EW * SATCOM & Space * R&D Laboratories Features Fast Tuning Response Excellent Wideband Rejection Single Positive Frequency Control: 0 to +14V Low Insertion Loss & User Selectable Cutoff Frequency Single Chip Replacement for Mechanically Tuned Designs 32 Lead 5x5 mm SMT Package: 25 mm2 Functional Diagram General Description The HMC881LP5E is a MMIC low pass filter which features a user selectable cutoff frequency. The cutoff frequency can be varied from 2.2 to 4.0 GHz by applying a single analog tuning voltage between 0 and 14V. This low pass filter provides a low 3.8 dB insertion loss, 10 dB return loss and 1.25 x cutoff stopband attenuation of >20 dB. This tunable filter can be used as a much smaller alternative to physically large switched filter banks and cavity tuned filters. The HMC881LP5E has excellent microphonics due to the monolithic design, and provides a dynamically adjustable solution in advanced communications applications. The low pass tunable filter is packaged in a RoHS compliant 5x5mm QFN leadless package. Electrical Specifi cations, TA = +25C Parameter Passband cutoff [1] Tuning Range Stopband Frequency (Rejection >20 dB) Re-entry Frequency (Rejection <30 dB) Insertion Loss Return Loss Maximum Input Power for Linear Operation Frequency Control Voltage (Vfctl) Frequency Control Port Source/Sink Current (Ifctl) Residual Phase Noise [2] (1 MHz offset) cutoff Drift Rate (Fixed Vfctl) Tuning Characteristics [3] tFULLBAND (0% Vfctl to 90% RF) -165 -0.8 150 0 Min. 0 2.2 1.25 x cutoff 30 3.8 10 10 14 1 Typ. Max. 4 4 Units GHz GHz GHz GHz dB dB dBm V mA dBc/Hz MHz/C ns [1] cutoff defined as the point at which the insertion loss is 3 dB below the minimum passband insertion loss. [2] Optimum residual phase noise performance requires the use of a low noise driver circuit. [3]Tuning speed is dependent on driver circuit. Data measured with a high speed op-amp driver and includes driver slew rate delay. 3-2 For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC881LP5E v01.0110 FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz Broadband Insertion Loss vs. Control Voltage 0 -10 Broadband Return Loss vs. Control Voltage 0 0V 3 FILTERS - TUNABLE - SMT 3-3 INSERTION LOSS (dB) 0V RETURN LOSS (dB) -10 -20 -30 7V 14V 7V 14V -20 -40 -50 -60 -70 0 5 10 15 20 25 30 S11 S22 -30 -40 0 5 10 15 20 25 30 FREQUENCY (GHz) FREQUENCY (GHz) Insertion Loss vs. Control Voltage [1] 0 Return Loss vs. Control Voltage [1] 0 0V INSERTION LOSS (dB) 7V 14V 0V -6 7V RETURN LOSS (dB) -3 -10 14V -20 -9 -30 S11 S22 -12 0 1 2 3 4 5 -40 0 1 2 3 4 5 FREQUENCY (GHz) FREQUENCY (GHz) Insertion Loss vs. Temperature, Vfctl @ 7V [1] 0 Return Loss vs. Temperature, Vfctl @ 7V [1] 0 +25C +85C -40C S11 -20 INSERTION LOSS (dB) -6 -9 +25C +85C -40C RETURN LOSS (dB) -3 -10 -30 S22 -40 -12 0 1 2 3 4 5 0 1 2 3 4 5 FREQUENCY (GHz) FREQUENCY (GHz) [1] Low frequency performance limited by external DC blocking capacitors at RF input and output. For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC881LP5E v01.0110 FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz 3 FILTERS - TUNABLE - SMT Cutoff Frequency vs. Temperature 5 Average Insertion Loss vs. Temperature in a 2 dB Bandwidth 0 +25C +85C -40C 3 INSERTION LOSS(dB) 4 -1 FREQUENCY(GHz) -2 2 +25C +85C -40C -3 1 -4 0 0 2 4 6 8 10 12 14 -5 0 2 4 6 8 10 12 14 Vftcl(V) Vfctl(V) Rejection Ratio vs. Temperature 1.5 +25C +85C -40C [1] Maximum Return Loss in a 2 dB Bandwidth vs. Temperature 0 +25C +85C -40C F20dB TO F3dB RATIO 1.4 -4 1.3 RETURN LOSS (dB) 10 12 14 -8 1.2 -12 1.1 -16 1 0 2 4 6 8 -20 0 2 4 6 8 10 12 14 Vfctl (V) Vfctl(V) Tuning Sensitivity vs. Temperature 300 Group Delay 1.4 1.2 TUNING SENSITIVITY (MHz/V) 250 GROUP DELAY (nsec) 0V 1 0.8 200 150 +25C +85C -40C 7V 0.6 0.4 0.2 0 14V 100 50 0 0 2 4 6 8 10 12 14 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Vfctl(V) FREQUENCY (GHz) [1] Rejection ratio is defined as the ratio of the frequency at which the relative insertion loss is 20 dB, to cutoff 3-4 For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC881LP5E v01.0110 FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz Absolute Maximum Ratings Frequency Control Voltage (Vfctl) RF Power Input Storage Temperature ESD Rating (HBM) -0.5 to +15V 26.5 dBm -65 to +150 C Class 1B Reliability Information Junction Temperature to Maintain 1 Million Hour MTTF Nominal Junction Temperature (T= 85 C and Pin = 10 dBm) Operating Temperature 150 C 90 C -40 to +85 C 3 FILTERS - TUNABLE - SMT 3-5 ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing NOTES: 1. LEADFRAME MATERIAL: COPPER ALLOY 2. DIMENSIONS ARE IN INCHES [MILLIMETERS] 3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE. 4. Pin BURR LENGTH SHALL BE 0.15mm MAXIMUM. Pin 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 HMC881LP5E Package Body Material RoHS-compliant Low Stress Injection Molded Plastic Lead Finish 100% matte Sn MSL Rating MSL1 [2] Package Marking [1] H881 XXXX [1] 4-Digit lot number XXXX [2] Max peak reflow temperature of 260 C For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC881LP5E v01.0110 FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz 3 FILTERS - TUNABLE - SMT Pin Descriptions Pin Number 1 - 4, 7 - 13, 15 - 18, 21 - 32 Function N/C Description The pins are not connected internally; however, all data shown herein was measured with these pins connected to RF/DC ground externally. These pins and exposed paddle must be connected to RF/DC ground. Interface Schematic 5, 20 GND 6 RFIN This pin is DC coupled and matched to 50 Ohms. External voltage must not be applied to this pin. 14 Vfctl Cutoff frequency control voltage. 19 RFOUT This pin is DC coupled and matched to 50 Ohms. External voltage must not be applied to this pin. Application Circuit 3-6 For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC881LP5E v01.0110 FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz Evaluation PCB 3 FILTERS - TUNABLE - SMT List of Materials for Evaluation PCB 128531 [1] Item J1 - J3 C1, C2 U1 PCB [2] Description SMA - SRI 100 pF Capacitor, 0402 Pkg. HMC881LP5E Filter 127338 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or Rogers 25FR The circuit board used in the application should use RF circuit design techniques. Signal lines should have 50 Ohms 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: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 3-7 |
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