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11 Ghz to 20 Ghz, Tunable Band-Pass Filter

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11 Ghz to 20 Ghz, Tunable Band-Pass Filter 11 GHz to 20 GHz, Tunable Band-Pass Filter Data Sheet ADMV8420 FEATURES FUNCTIONAL BLOCK DIAGRAM Amplitude settling time: 200 ns NIC GND GND NIC NIC NIC 24 21 22 23 20 Wideband rejection: ≥20 dB 19 Single-chip implementation 24-lead, 4 mm × 4 mm, RoHS-compliant LFCSP GND 1 18 GND ADMV8420 APPLICATIONS GND 2 17 GND RFIN 3 16 RFOUT Test and measurement equipment Military radar and electronic warfare systems GND 4 15 GND Very small aperture terminal (VSAT) communications GND 5 14 GND GND 6 13 GND 1 7 8 9 1 PACKAGE 12 10 BASE L NIC NIC NIC FCT GND GND GND V NIC = NOT INTERNALLY CONNECTED. 17199-001 Figure 1. GENERAL DESCRIPTION The ADMV8420 is a monolithic microwave integrated circuit voltage between 0 V to 15 V. This tunable filter is a smaller (MMIC), tunable band-pass filter that features a user-selectable alternative to switched filter banks and cavity tuned filters. The pass band frequency. The 3 dB filter bandwidth is approximately ADMV8420 has minimal microphonics due to the monolithic 20%, and the 20 dB filter bandwidth is approximately 40%. design and provides a dynamically adjustable solution in Additionally, the center frequency (fCENTER) varies between advanced communications applications. 11 GHz to 20 GHz by applying a center frequency control Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2019 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com ADMV8420 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Interface Schematics .....................................................................5 Applications ....................................................................................... 1 Typical Performance Characteristics ..............................................6 Functional Block Diagram .............................................................. 1 Theory of Operation ...................................................................... 10 General Description ......................................................................... 1 Applications Information .............................................................. 11 Revision History ........................................................................... 2 Typical Application Circuit ....................................................... 11 Specifications ..................................................................................... 3 Evaluation Printed Circuit Board (PCB) ................................ 11 Absolute Maximum Ratings ............................................................ 4 Outline Dimensions ....................................................................... 12 ESD Caution .................................................................................. 4 Ordering Guide .......................................................................... 12 Pin Configuration and Function Descriptions ............................. 5 REVISION HISTORY 6/2019—Revision 0: Initial Version Rev. 0 | Page 2 of 12 Data Sheet ADMV8420 SPECIFICATIONS TA = 25°C, center frequency control voltage (VFCTL) is swept from 0 V to 15 V. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments FREQUENCY RANGE fCENTER 11 20 GHz BANDWIDTH 3 dB 20 % REJECTION Low-Side 0.8 × fCENTER GHz ≥20 dB High-Side 1.2 × fCENTER GHz ≥20 dB Reentry 2.3 × fCENTER GHz ≤30 dB LOSS Insertion Loss 5 dB Return Loss 8.5 dB DYNAMIC PERFORMANCE Input Power at 5° Shift in Insertion Phase (VFCTL = 0 V) 10 dBm Input Third-Order Intercept (IP3) 31 dBm Group Delay 0.5 ns Phase Sensitivity 1.33 Rad/V Amplitude Settling 200 ns Time to settle to minimum insertion loss, within ≤0.5 dB of static insertion loss Drift Rate −1.07 MHz/°C RESIDUAL PHASE NOISE 1 MHz Offset −161 dBc/Hz TUNING VFCTL 0 15 V Center Frequency Control Current (IFCTL) ±1 mA Rev. 0 | Page 3 of 12 ADMV8420 Data Sheet ABSOLUTE MAXIMUM RATINGS Table 2. ESD CAUTION Parameter Rating Tuning VFCTL −0.5 V to +15 V IFCTL ±1 mA Radio Frequency (RF) Input Power 27 dBm Operating Temperature Range −40°C to +85°C Storage Temperature Range −65°C to +150°C Junction Temperature for 1 Million Mean 150°C Time to Failure (MTTF) Nominal Junction Temperature 108°C (Temperature at Ground Pad = 85°C, Input Power (PIN) = 27 dBm) Electrostatic Discharge (ESD) Rating Human Body Model (HBM) 1000 V Field Induced Charge Device Model 1250 V (FICDM) Moisture Sensitivity Level (MSL) Rating MSL3 Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Rev. 0 | Page 4 of 12 Data Sheet ADMV8420 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS GND NIC NIC NIC NIC GND 24 22 21 23 20 19 GND 1 18 GND GND 2 17 GND RFIN 3 ADMV8420 16 RFOUT GND 4 TOP VIEW 15 GND (Not to Scale) GND 5 14 GND GND 6 13 GND 7 8 9 11 12 10 NIC NIC NIC FCTL GND GND V NOTES 1. NIC = NOT INTERNALLY CONNECTED. THESE PINS ARE NOT CONNECTED INTERNALLY. HOWEVER, ALL DATA SHOWN HEREIN WAS MEASURED WITH THESE CONNECTED TO RF AND DC GROUND. 2. EXPOSED PAD. THE EXPOSED PAD MUST BE CONNECTED TO RF AND DC GROUND. 17199-002 Figure 2. Pin Configuration Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1, 2, 4 to 7, 12 to 15, 17 to 19, 24 GND Ground. These pins must be connected to the radio frequency (RF) and dc ground. 3 RFIN RF Input. This pin is dc-coupled and matched to 50 Ω. Do not apply an external voltage to this pin. 8, 10, 11, 20 to 23 NIC Not Internally Connected. These pins are not connected internally. However, all data shown is measured with these pins connected to the RF and dc ground. 9 VFCTL Center Frequency Control Voltage. This pin controls the fCENTER of the device. 16 RFOUT RF Output. This pin is dc-coupled and matched to 50 Ω. Do not apply an external voltage to this pin. EPAD Exposed Pad. The exposed pad must be connected to RF and dc gound. INTERFACE SCHEMATICS 4Ω 0.4nH 100Ω RFIN VFCTL 20pF 27pF 17199-005 17199-003 Figure 3. VFCTL Interface Schematic Figure 5. RFIN Interface Schematic RFOUT GND 17199-006 17199-004 Figure 6. RFOUT Interface Schematic Figure 4. GND Interface Schematic Rev. 0 | Page 5 of 12 ADMV8420 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 0 0 0V 7V –10 15V –5 –20 –10 –30 –15 –40 –20 –50 –25 –60 –30 S11, 0V S22, 0V BROADBAND RETURN LOSS (dB) BROADBAND INSERTION LOSS (dB) S11, 7V –70 –35 S22, 7V S11, 15V S22, 15V –80 –40 10 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 1 17199-107 RF FREQUENCY (GHz) RF FREQUENCY (GHz) 17199- Figure 7. Broadband Insertion Loss vs. RF Frequency at Various Voltages Figure 10. Broadband Return Loss vs. RF Frequency at Various Voltages 0 0 0V 7V 15V –5 –5 –10 –10 –15 –15 –20 –25 –20 RETURN LOSS (dB) INSERTION LOSS (dB) LOSS INSERTION –30 S11, 0V S22, 0V –25 S11, 7V –35 S22, 7V S11, 15V S22, 15V –30 –40 1 5 10 15 20 25 30 7 9 11 13 15 17 19 21 23 25 27 11 17199- RF FREQUENCY (GHz) 17199-108 RF FREQUENCY (GHz) Figure 8. Insertion Loss vs. RF Frequency at Various Voltages Figure 11. Return Loss vs. RF Frequency at Various Voltages 0 0 –40°C +25°C +85°C –2 –5 –4 –6 –10 –8 –15 –10 –12 –20 RETURN LOSS (dB) –14 S11, –40°C S22, –40°C MINIMUM INSERTION LOSS (dB) LOSS INSERTION MINIMUM –16 –25 S11, +25°C S22, +25°C –18 S11, +85°C S22, +85°C –30 –20 12 5 10 15 20 25 30 10 12 14 16 18 20 22 24 26 28 30 1 17199-109 RF FREQUENCY (GHz) 17199- RF FREQUENCY (GHz) Figure 9. Minimum Insertion Loss vs. RF Frequency at Various Temperatures, Figure 12. Return Loss vs. RF Frequency at Various Temperatures, VFCTL = 7 V VFCTL = 7 V Rev. 0 | Page 6 of 12 Data Sheet ADMV8420 25 0 –40°C –40°C +25°C +25°C +85°C +85°C –2 20 –4 15 –6 (GHz) –8 CENTER 10 f –10 5 (dB) LOSS INSERTION MINIMUM –12 0 –14 13 16 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 V (V) V (V) 17199- FCTL FCTL 17199- Figure 13. fCENTER vs. VFCTL at Various Temperatures Figure 16. Minimum Insertion Loss vs. VFCTL at Various Temperatures 30 0 –40°C –40°C +25°C +25°C +85°C +85°C 25 –3 20 –6 15 –9 10 3dB BANDWIDTH (%) MAXIMUM RETURN LOSS (dB) RETURN MAXIMUM –12 5 0 –15 17 14 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 V (V) V (V) 17199- FCTL 17199- FCTL Figure 14. 3 dB Bandwidth vs. VFCTL at Various Temperatures Figure 17. Maximum Return Loss in a 2 dB Bandwidth vs. VFCTL at Various Temperatures 1.00 –40°C 1.40 +25°C +85°C –40°C +25°C 0.95 1.35 +85°C TIO A TIO 1.30 0.90 A 1.25 0.85 1.20 0.80 -SIDE REJECTION R 1.15 W LO 1.10 0.75 HIGH-SIDE REJECTION R 1.05 0.70 15 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 1.00 18 V (V) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 FCTL 17199- V (V) FCTL 17199- Figure 15.
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