HMC877LC3 v01.0312 Broadband Time Delay & Phase Shifter - SMT BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Typical Applications Features The HMC877LC3 is ideal for: Very Wide Bandwidth: 8 - 23 GHz • Synchronization of clock and data Continuous Adjustable Delay Range: 500° (1.4 UI[1]) • Transponder design Single-Ended or Differential Operation • Broadband Test & Measurement Adjustable Differential Output Voltage Swing: 500 - 950 mVp-p @ 16 GHz • RF ATE Applications Delay Control Modulation Bandwidth: 2.5 GHz Single Supply: +3.3V 16 Lead Ceramic 3x3mm SMT Package: 9mm² Functional Diagram General Description The HMC877LC3 is a phase shifter/time delay with 0 to 500°(1.4 UI) continuously adjustable shift/delay range. The delay control is linearly monotonic with respect to the differential control voltage (VDCP, VDCN) and the control input has a modulation bandwidth of 2.5 GHz. The device provides a differential output voltage with constant amplitude for singleended or differential input voltages above the input sensitivity level, while the output voltage swing may be adjusted using the VAC control pin. The HMC877LC3 features internal temperature compensation and bias circuitry to minimize delay variations with temperature. The device also features a delay control voltage range adjustment pin, LC. All RF input and outputs of the HMC877LC3 are internally terminated with 50 Ohms to Vcc, and may either be AC or DC coupled. Output pins can be connected directly to a 50 Ohm to Vcc terminated system, while DC blocking capacitors must be used if the terminated system input is 50 Ohms to a DC voltage other than Vcc. The HMC877LC3 is available in ROHS-compliant 3x3 mm SMT package. Electrical Specifications, TA = +25° C, Vcc = 3.3V, GND=ODWN = 0V Parameter Conditions Min. Typ. Max. Power Supply Voltage ± %5 Tolerance Power Supply Current ODWN = 0V 3.135 3.3 3.465 V 175 190 215 mA @ 10 GHz Phase Shift Range Time Delay Range 504 Deg @ 16 GHz 498 Deg @ 22 GHz 485 Deg @ 10 GHz 1.4 UI @ 16 GHz 1.38 UI @ 22 GHz 1.35 UI 2.5 GHz Delay Control Modulation Bandwidth Delay Control Voltage (VDCP) Units VCC-0.6 VCC+0.6 V [1] The UI stands for unit interval 1 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Electrical Specifications, TA = +25° C, Vcc = 3.3V, GND=ODWN = 0V (Continued) Conditions Output Amplitude Control Voltage (VAC) Single-Ended, peak-to-peak @ 10 GHz Output Amplitude * Harmonic Suppression (fin is fundemental frequency) Min. Typ. 0.65 1.5 Max. Units 1.8 V 490 648 mVp-p Single-Ended, peak-to-peak @ 16 GHz 420 520 mVp-p Single-Ended, peak-to-peak @ 22 GHz 320 424 mVp-p VDCP=VDCN=3.3 V @ 22 GHz (fin-fin/2) 26 48 dBc VDCP=VDCN=3.3 V @ 8 GHz (fin-3fin/2) 28 62 dBc VDCP=VDCN=3.3 V @ 16 GHz (fin-2fin) 30 36 dBc 32 Input Return Loss frequency < 23 GHz 12 dB Output Return Loss frequency < 23 GHz 6 dB RMS Jitter @ 16 GHz 0.45 ps Rise Time, tr @ 16 GHz 10 ps Fall Time, tf @ 16 GHz 11 ps Time Delay Temperature Sensitivity @ 16 GHz 0.05 deg/°C VDCP=2.7V, VDCN=3.3V@ 16GHz (Relative to zero phase shift) 140 ps Propagation Delay, td * Harmonic suppression measurements are taken for single-ended inputs and outputs. Time Delay vs. Bias Voltage [2][3][4] 1.6 1.6 1.4 1.4 ADJUSTABLE TIME DELAY (UI) ADJUSTABLE TIME DELAY (UI) Time Delay vs. Frequency [1][2][3] 1.2 1 0.8 0.6 8 GHz 10 GHz 12 GHz 20 GHz 22 GHz 23 GHz 0.4 0.2 0 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 1.2 1 0.8 0.6 0.4 3.135 V 3.3 V 3.465 V 0.2 0 -0.6 DIFFERENTIAL CONTROL VOLTAGE (V) [1] VCC = 3.3V [3] On the x-axis differential control voltage represents VDCP-VDCN voltage -0.4 -0.2 0 0.2 0.4 0.6 DIFFERENTIAL CONTROL VOLTAGE (V) Broadband Time Delay & Phase Shifter - SMT Parameter [2] ODWN= 0 V, VDCN=VCC [4] Input Frequency: 20 GHz For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] 2 HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Time Delay vs. Control Voltage @ VDCP=2.7V to 3.9V with 0.1V step [1][2] Time Delay vs. Temperature [1][2][3][4] 1.5 ADJUSTABLE TIME DELAY (UI) ADJUSTABLE TIME DELAY (UI) 1.4 1.25 1.2 1 1 0.75 0.8 0.6 0.4 +25 C +85 C -40 C 0.2 0.5 0.25 0 0 -0.6 -0.4 -0.2 0 0.2 0.4 8 0.6 10 11 12 13 14 15 16 17 18 19 20 21 22 23 FREQUENCY (GHz) Time Delay vs. Temperature @ VDCP=3.3V (Relative to VDCP=VCC-0.6V) [1][2][6] Phase Shift vs. Frequency [1][2][3] 550 ADJUSTABLE PHASE SHIFT (Deg) ADJUSTABLE TIME DELAY (UI) 1 0.9 0.8 0.7 0.6 +25 C +85 C -40 C 0.5 0.4 8 9 500 450 400 350 300 250 200 150 50 0 -0.6 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Phase Shift vs. Bias Voltage 500 ADJUSTABLE PHASE SHIFT (Deg) 550 500 450 400 350 300 250 200 3.135 V 3.3 V 3.465 V 50 -0.4 -0.2 0 0.2 -0.2 0 0.2 0.4 0.6 Phase Shift vs. Temperature [1][2][3][4] 550 100 -0.4 DIFFERENTIAL CONTROL VOLTAGE (V) [2][3][4] 150 10 GHz 12 GHz 20 GHz 22 GHz 100 FREQUENCY (GHz) 0 -0.6 0.4 0.6 450 400 350 300 250 200 150 100 +25 C +85 C -40 C 50 0 -0.6 DIFFERENTIAL CONTROL VOLTAGE (V) [1] VCC = 3.3V [3] On the x-axis differential control voltage represents VDCP-VDCN voltage 3 9 DIFFERENTIAL CONTROL VOLTAGE (V) ADJUSTABLE PHASE SHIFT (Deg) Broadband Time Delay & Phase Shifter - SMT 1.6 -0.4 -0.2 0 0.2 0.4 0.6 DIFFERENTIAL CONTROL VOLTAGE (V) [2] ODWN= 0 V, VDCN=VCC [4] Input Frequency: 20 GHz For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Phase Shift vs. Control Voltage @ VDCP=2.7V to 3.9V with 0.1V step [1][2][3] Phase Shift vs. Temperature @VDCP=3.3V (Relative to VDCP=VCC-0.6V) [1][2] ADJUSTABLE PHASE SHIFT (Deg) ADJUSTABLE PHASE SHIFT (Deg) 500 450 400 350 300 250 200 150 100 50 0 320 300 280 260 240 +25 C +85 C -40 C 220 200 8 9 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 FREQUENCY (GHz) FREQUENCY (GHz) Phase Error vs. Control Voltage @ Fmean=16 GHz [1][2][3][4] Phase Shift vs. Control Voltage @ 10 GHz [1][2][3][4] 12 VDCP-VDCN=-0.6 V VDCP-VDCN=-0.4 V VDCP-VDCN=-0.2 V VDCP-VDCN= 0 V VDCP-VDCN= 0.2 V VDCP-VDCN= 0.4 V VDCP-VDCN= 0.6 V 10 PHASE ERROR (%) NORMALIZED PHASE SHIFT (Deg) 15 5 0 -5 -10 -15 8 9 8 4 0 -8 -12 -15 10 11 12 13 14 15 16 17 18 19 20 21 22 23 VDCP-VDCN=-0.6V VDCP-VDCN=-0.2V VDCP-VDCN=-0.1V VDCP-VDCN= 0V VDCP-VDCN= 0.2V VDCP-VDCN= 0.4V VDCP-VDCN= 0.6V -4 -12.5 FREQUENCY (GHz) -5 -2.5 0 DC Current vs. Temperature [2][5] 30 250 VDCP-VDCN=-0.6V VDCP-VDCN=-0.2V VDCP-VDCN=-0.1V VDCP-VDCN= 0V 20 VDCP-VDCN= 0.2V VDCP-VDCN= 0.4V VDCP-VDCN= 0.6V 225 DC CURRENT (mA) NORMALIZED PHASE SHIFT (Deg) -7.5 Pin (dBm) Phase Shift vs. Control Voltage @ 22 GHz [1][2][3][4] 10 0 -10 200 175 150 +25 C +85 C -40 C 125 -20 -30 -15 -10 -12.5 -10 -7.5 -5 -2.5 100 3.135 0 [2] ODWN= 0 V, VDCN=VCC [4] VDCP-VDCN=-0.6V is taken as reference level 3.218 3.3 3.383 3.465 SUPPLY VOLTAGE (V) Pin (dBm) [1] VCC = 3.3V Broadband Time Delay & Phase Shifter - SMT 340 550 [3] 25°C [5] VDCP=3.3V and input frequency is 20 GHz For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] 4 HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Single-Ended Output Swing vs. Supply Voltage [1][2][3] Single-Ended Output Swing vs. Frequency [1][3][4] 600 OUTPUT VOLTAGE (mVp-p) OUTPUT VOLTAGE (mVp-p) 480 460 440 420 400 +25 C +85 C -40 C 380 360 340 3.135 3.3 550 500 450 400 +25 C +85 C -40 C 350 300 3.465 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 SUPPLY VOLTAGE (V) FREQUENCY (GHz) Single-Ended Output Swing vs. Control Voltage [1][4][5] Duty Cycle Distortion @ 16 GHz [1][4][5] 60 600 550 DUTY CYCLE (%) OUTPUT VOLTAGE (mVp-p) 500 450 400 350 50 45 300 250 -0.6 55 +25 C +85 C -40 C 10 GHz 16 GHz 22 GHz -0.4 -0.2 0 0.2 0.4 40 -0.6 0.6 -0.4 -0.2 0 0.2 0.4 0.6 DIFFERENTIAL CONTROL VOLTAGE (V) DIFFERENTIAL CONTROL VOLTAGE (V) Single-Ended Output Swing vs. Amplitude Control Voltage [1][3][4][6] 800 OUTPUT VOLTAGE (mVp-p) Broadband Time Delay & Phase Shifter - SMT 500 700 600 500 400 300 200 +25 C +85 C -40 C 100 0 0.6 0.8 1 1.2 1.4 1.6 1.8 AMPLITUDE CONTROL VOLTAGE (V) [1] ODWN= 0V, VDCN=VCC [4] VCC=3.3V [6] The input frequency is 10 GHz 5 [2] Input Frequency: 20 GHz [3] VDCP=3.3V [5] On the x-axis differential control voltage represents VDCP-VDCN voltage For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Fall Time vs. Temperature @ 16 GHz [1][2][3] 12.5 12.5 FALL TIME (ps) 15 RISE TIME (ps) 15 10 7.5 7.5 +25 C +85 C -40 C 5 -0.6 -0.4 -0.2 0 0.2 0.4 10 +25 C +85 C -40 C 5 -0.6 0.6 -0.4 DIFFERENTIAL CONTROL VOLTAGE (V) 0.9 0.9 0.8 0.8 0.7 0.7 0.6 0.5 0.4 0.3 0.2 0.1 -0.2 0 0.2 0.4 0.4 0.3 3.135 V 3.3 V 3.465 V 0 -0.6 0.6 -0.4 -0.2 0 0.2 0.4 0.6 DIFFERENTIAL CONTROL VOLTAGE (V) Pfin-P3fin/2 Output Power Difference vs. Control Voltage [1][2][5] 50 60 50 (dBc) 40 VDCP-VDCN=-0.6V VDCP-VDCN=-0.4V VDCP-VDCN=-0.2V VDCP-VDCN= 0V VDCP-VDCN= 0.2V VDCP-VDCN= 0.4V VDCP-VDCN= 0.6V 10 0 40 30 fin 20 P -P 3fin/2 30 fin/2 (dBc) 0.6 0.5 0.1 Pfin-Pfin/2 Output Power Difference vs. Control Voltage [1][2][5] fin 0.4 0.6 DIFFERENTIAL CONTROL VOLTAGE (V) P -P 0.2 0.2 +25 C +85 C -40 C -0.4 0 RMS Jitter vs. Bias Voltage @ 16 GHz [1][3][4] RMS JITTER (ps) RMS JITTER (ps) RMS Jitter vs. Temperature @ 16 GHz[1][2][3][4] 0 -0.6 -0.2 DIFFERENTIAL CONTROL VOLTAGE (V) Broadband Time Delay & Phase Shifter - SMT Rise Time vs. Temperature @ 16 GHz [1][2][3] VDCP-VDCN=-0.6V VDCP-VDCN=-0.4V VDCP-VDCN=-0.2V VDCP-VDCN= 0V VDCP-VDCN= 0.2V VDCP-VDCN= 0.4V VDCP-VDCN= 0.6V 20 10 0 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 FREQUENCY (GHz) 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 FREQUENCY (GHz) [1] ODWN= 0V, VDCN=VCC[2] VCC=3.3V [3] On the x-axis differential control voltage represents VDCP-VDCN voltage [4] Source jitter was not deembeded [5] fin is the fundemental frequency For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] 6 HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Second Harmonic vs. Control Voltage [1][2] PHASE MODULATION AMPLITUDE (UI) 40 35 (dBc) 30 fin P -P 2fin 25 20 VDCP-VDCN=-0.6V VDCP-VDCN=-0.4V VDCP-VDCN=-0.2V VDCP-VDCN= 0V VDCP-VDCN= 0.2V VDCP-VDCN= 0.4V VDCP-VDCN= 0.6V 15 10 5 0 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1.2 1 0.8 0.6 0.4 +25 C +85 C -40 C 0.2 0 100 1000 Input Return Loss vs. Frequency [1][4] Output Return Loss vs. Frequency [1][4] 0 -5 -10 -10 RETURN LOSS (dB) 0 -5 -15 -20 -25 -30 -35 -15 -20 -25 -30 QN QP -35 INN INP -40 -45 -40 -45 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 FREQUENCY (GHz) [1] VCC= 3.3 V, ODWN=0V [2] fin is the fundemental frequency [3] -6.8 dBm input power was applied to VDCP, VDCN is 50 Ohms terminated and fin=15 GHz 7 10000 FREQUENCY (MHz) FREQUENCY (GHz) RETURN LOSS (dB) Broadband Time Delay & Phase Shifter - SMT 45 Modulation Signal Bandwidth vs. Temperature [1][3] FREQUENCY (GHz) [4] VDCP=VDCN=VCC For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Output Eye Diagram Snapshot for 15 GHz Input Signal Amplitude Scale: 81.8 mV/div Test Conditions: VCC=3.3 V, ODWN=0 V VDCP = 300 mVpp @ 1 MHz VDCN is 50 Ohms terminated Measurement Results: RMS Jitter: 0.3 ps Peak to peak Jitter: 1.78 ps Rise Time: 11.78 ps Fall Time: 11.78 ps Output Eye Diagram Continuous Snapshot for 15 GHz Input Signal Time Scale: 10 ps/div Amplitude Scale: 81.8 mV/div Test Conditions: VCC=3.3 V, ODWN=0 V VDCP = 300 mVpp @ 1 MHz VDCN is 50 Ohms terminated Measurement Result: 26.8 ps (0.4 UI ) For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] Broadband Time Delay & Phase Shifter - SMT Time Scale: 10 ps/div 8 HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Broadband Time Delay & Phase Shifter - SMT Absolute Maximum Ratings Power Supply Voltage (Vcc) -0.5V to +3.75V Input Voltage (VIN), Output Voltage (VOUT) Vcc -1.2V to Vcc+0.6V Control Voltage (VDCP), Delay Control Voltage Range Adjustment (LC), Amplitude Control Voltage (VAC) 0 to Vcc+0.6V Channel Temperature (Tc) 125 °C Continuous Pdiss (T = 85 °C) (derate 35.8 mW/°C above 85 °C) 1.43 W Thermal Resistance (junction to ground paddle) 27.9 °C/W Storage Temperature -65 to +125 °C Operating Temperature -40 to +85°C ESD Sensitivity (HBM) Class 1A ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing NOTES: 1. PACKAGE BODY MATERIAL: ALUMINA 2. LEAD AND GROUND PADDLE PLATING: 30-80 MICROINCHES GOLD OVER 50 MICROINCHES MINIMUM NICKEL. 3. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE. 5. CHARACTERS TO BE BLACK INK MARKED WITH .018”MIN to .030”MAX HEIGHT REQUIREMENTS. UTILIZE MAXIMUM CHARACTER HEIGHT BASED ON LID DIMENSIONS AND BEST FIT. LOCATE APPROX. AS SHOWN. 6. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM -C7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 9 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Pin Descriptions Function Description 1, 4-5, 8-9,12 GND Signal grounds should be connected to 0V. Ground paddle must be connected to DC ground 2, 3, 6, 7 INP INN VDCP VDCN Differential signal inputs. 10, 11 QN QP Differential signal outputs. 13 VAC The output amplitude control pin. 14 ODWN Enable pin of the output. It should be connected to GND to enable the part. When it is connected to VCC or floated the output is set to VCC. 15 VCC The supply voltage of the part. Interface Schematic For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] Broadband Time Delay & Phase Shifter - SMT Pin Number 10 HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz Pin Descriptions (Continued) Broadband Time Delay & Phase Shifter - SMT Pin Number 11 16 Function Description LC This pin enables the control of the linearity level of Control Voltage vs. Phase Shift/Time Delay. Compromise is between linearity level and wideness of the Phase Shift/Time Delay tuning range. For optimum tuning range and linearity balance, R2=R3 are chosen as 4.7 kOhms. Interface Schematic Application Circuit For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] HMC877LC3 v01.0312 BROADBAND TIME DELAY & PHASE SHIFTER SMT, 8 - 23 GHz List of Materials for Evaluation PCB EVAL01-HMC877LC3[1] Item Description J1 - J2, J5-J6 K Connector J3-J4 SMA Connector TP1-TP5 DC Pin C1-C3 1000 pF Capacitor, 0402 Pkg. C5-C7 0.1 µF Capacitor, 0402 Pkg. C8-C9 4.7 µF Capacitor, Tantalum R2-R3 4.7 kOhm Resistor, 0402 Pkg. U1 HMC877LC3 Analog Phase Shifter/ Broadband Time Delay PCB [2] 600-00064-00 Evaluation Board The circuit board used in the 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 board should be mounted to an appropriate heat sink. The evaluation circuit board shown is available from Hittite upon request. Broadband Time Delay & Phase Shifter - SMT Evaluation PCB [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 or Arlon 25 FR For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 [email protected] 12