FEATURES FUNCTIONAL BLOCK DIAGRAM Frequency range: 5.9 GHz to 8.5 GHz Typical gain of 25 dB Low noise input Noise figure: <1.7 dB typical from 5.9 GHz to 8.5 GHz High linearity input >4.0 dBm typical input third-order intercept (IIP3) >−10.6 dBm typical input 1 dB compression point (P1dB) Matched 50 Ω single-ended input Matched 100 Ω differential outputs 8-lead, 2.00 mm × 2.00 mm LFCSP microwave packaging VCC1 50Ω SINGLE-ENDED ADL5721 VCC2 GND OUTN INPT OUTP RBIAS BAND 100Ω DIFFERENTIAL 14258-001 Data Sheet 5.9 GHz to 8.5 GHz, Low Noise Amplifier ADL5721 Figure 1. APPLICATIONS Point to point microwave radios Instrumentation Satellite communications (SATCOM) Phased arrays GENERAL DESCRIPTION The ADL5721 is a narrow-band, high performance, low noise amplifier targeting microwave radio link receiver designs. The monolithic silicon germanium (SiGe) design is optimized for microwave radio link bands ranging from 5.9 GHz to 8.5 GHz. The unique design offers a single-ended 50 Ω input impedance and provides a 100 Ω balanced differential output that is ideal for driving Analog Devices, Inc., differential downconverters and radio frequency (RF) sampling analog-to-digital converters (ADCs). This low noise amplifier (LNA) provides noise figure Rev. 0 performance that, in the past, required more expensive threefive (III-V) compounds process technology to achieve. This LNA uses a band switch feature to allow the input P1dB and noise figure to trade off for optimum system performance. The ADL5721 and ADL5723 to ADL5726 family of narrowband LNAs are each packaged in a tiny, thermally enhanced, 2.00 mm × 2.00 mm LFCSP package. The ADL5721 and ADL5723 to ADL5726 family operates over the temperature range of −40°C to +85°C. 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 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADL5721 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Low Band (BAND = 0 V) .............................................................6 Applications ....................................................................................... 1 High Band (BAND = 1.8 V) ........................................................8 Functional Block Diagram .............................................................. 1 Theory of Operation ...................................................................... 10 General Description ......................................................................... 1 Applications Information .............................................................. 11 Revision History ............................................................................... 2 Layout .......................................................................................... 11 Specifications..................................................................................... 3 Differential vs. Single-Ended Output ...................................... 11 AC Specifications.......................................................................... 3 Evaluation Board ............................................................................ 13 DC Specifications ......................................................................... 3 Initial Setup ................................................................................. 13 Absolute Maximum Ratings ............................................................ 4 Results .......................................................................................... 13 Thermal Resistance ...................................................................... 4 Basic Connections for Operation ............................................. 14 ESD Caution .................................................................................. 4 Outline Dimensions ....................................................................... 15 Pin Configuration and Function Descriptions ............................. 5 Ordering Guide .......................................................................... 15 Typical Performance Characteristics ............................................. 6 REVISION HISTORY 4/16—Revision 0: Initial Version Rev. 0 | Page 2 of 15 Data Sheet ADL5721 SPECIFICATIONS AC SPECIFICATIONS TA = 25°C, VCC1 = 1.8 V, VCC2 = 3.3 V, ZSOURCE = 50 Ω, ZLOAD = 100 Ω differential, unless otherwise noted. Table 1. Parameter FREQUENCY RANGE Low Band, BAND = 0 V High Band, BAND = 1.8 V FREQUENCY = 5.9 GHz Gain (S21) Noise Figure Input Third-Order Intercept (IIP3) Input 1 dB Compression Point (P1dB) Input Return Loss (S11) Output Return Loss (S22) FREQUENCY = 7.2 GHz Gain (S21) Noise Figure Input Third-Order Intercept (IIP3) Input 1 dB Compression Point (P1dB) Input Return Loss (S11) Output Return Loss (S22) FREQUENCY = 8.5 GHz Gain (S21) Noise Figure Input Third-Order Intercept (IIP3) Input 1 dB Compression Point (P1dB) Input Return Loss (S11) Output Return Loss (S22) Test Conditions/Comments Min Typ 5.9 7.1 Max Unit 7.2 8.5 GHz GHz Low band, BAND = 0 V Δf = 1 MHz, input power (PIN) = −30 dBm per tone 25.0 1.7 4.3 −10.6 10 9 dB dB dBm dBm dB dB 25.9 1.6 4.0 −9.3 10 10 dB dB dBm dBm dB dB 24.6 1.5 5.7 −8.6 10 10 dB dB dBm dBm dB dB Low band, BAND = 0 V Δf = 1 MHz, PIN = −30 dBm per tone High band, BAND = 1.8 V Δf = 1 MHz, PIN = −30 dBm per tone DC SPECIFICATIONS Table 2. Parameter POWER INTERFACE VCC1 Voltage VCC2 Voltage Quiescent Current vs. Temperature VCC1 VCC2 Test Conditions/Comments TA = 25°C −40°C ≤ TA ≤ +85°C TA = 25°C −40°C ≤ TA ≤ +85°C Rev. 0 | Page 3 of 15 Min Typ Max Unit 1.65 3.1 1.8 3.3 1.95 3.5 V V 11.6 12.1 74.1 74.4 mA mA mA mA ADL5721 Data Sheet ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 3. Parameter Supply Voltages VCC1 VCC2 Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 60 sec) Rating 2.25 V 4.1 V 150°C −40°C to +85°C −55°C to +125°C −65°C to +150°C 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. θJA is thermal resistance, junction to ambient (°C/W), θJB is thermal resistance, junction to board (°C/W), and θJC is thermal resistance, junction to case (°C/W). Table 4. Thermal Resistance Package Type 8-Lead LFCSP 1 θJA1 39.90 θJB1 23.88 θJC1 3.71 Unit °C/W See JEDEC standard JESD51-2 for additional information on optimizing the thermal impedance for a printed circuit board (PCB) with 3 × 4 vias. ESD CAUTION Rev. 0 | Page 4 of 15 Data Sheet ADL5721 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VCC1 1 INPT 3 RBIAS 4 8 VCC2 ADL5721 TOP VIEW (Not to Scale) 7 OUTN 6 OUTP 5 BAND NOTES 1. THE EXPOSED PAD MUST BE SOLDERED TO A LOW IMPEDANCE GROUND PLANE. 2. THE DEVICE NUMBER ON THE FIGURE DOES NOT INDICATE THE LABEL ON THE PACKAGE. REFER TO THE PIN 1 INDICATOR FOR THE PIN LOCATIONS. 14258-002 GND 2 Figure 2. Pin Configuration Table 5. Pin Function Descriptions Pin No. 1 2 3 4 Mnemonic VCC1 GND INPT RBIAS 5 BAND 6, 7 8 OUTP, OUTN VCC2 EPAD (EP) Description 1.8 V Power Supply. It is recommended to place the decoupling capacitors as close to this pin as possible. Ground. RF Input. This pin is a 50 Ω single-ended input. Resistor Bias. For typical operation, connect a 442 Ω resistor from RBIAS to GND. It is recommended to place the RBIAS resistor as close to the pin as possible. Band Select Control. Select a logic low of 0 V for the lower frequency range from 5.9 GHz to 7.2 GHz. Select a logic high of 1.8 V for the higher frequency range from 7.1 GHz to 8.5 GHz. RF Outputs. These pins are 100 Ω differential outputs. 3.3 V Power Supply. It is recommended to place the decoupling capacitors as close to this pin as possible. Exposed Pad. The exposed pad must be soldered to a low impedance ground plane. Rev. 0 | Page 5 of 15 ADL5721 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VCC1 = 1.8 V, VCC2 = 3.3 V, ZSOURCE = 50 Ω, ZLOAD = 100 Ω differential, unless otherwise noted. LOW BAND (BAND = 0 V) 35 30 10 TA = –40°C TA = +25°C TA = +85°C 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V 9 8 NOISE FIGURE (dB) GAIN (dB) 25 20 15 10 7 6 5 4 3 2 5 FREQUENCY (GHz) 0 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 14258-003 0 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) Figure 3. Gain vs. Frequency for Various Temperatures 35 30 14258-006 1 Figure 6. Noise Figure vs. Frequency for Various Supply Voltages 0 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V TA = –40°C TA = +25°C TA = +85°C –5 INPUT P1dB (dBm) GAIN (dB) 25 20 15 –10 –15 –20 10 FREQUENCY (GHz) –30 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 14258-004 0 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) Figure 4. Gain vs. Frequency for Various Supply Voltages 10 9 Figure 7. Input P1dB vs. Frequency for Various Temperatures 0 TA = –40°C TA = +25°C TA = +85°C 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V –5 8 INPUT P1dB (dBm) 7 6 5 4 3 2 –10 –15 –20 –25 0 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) –30 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) Figure 5. Nosie Figure vs. Frequency for Various Temperatures Figure 8. Input P1dB vs. Frequency for Various Supply Voltages Rev. 0 | Page 6 of 15 14258-008 1 14258-005 NOISE FIGURE (dB) 14258-007 –25 5 Data Sheet 20 15 ADL5721 0 TA = –40°C TA = +25°C TA = +85°C –5 TA = –40°C TA = +25°C TA = +85°C INPUT RETURN LOSS (dB) 10 INPUT IP3 (dBm) 5 0 –5 –10 –15 –10 –15 –20 –25 –30 –20 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) –40 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 14258-009 FREQUENCY (GHz) Figure 9. Input IP3 vs. Frequency for Various Temperatures 20 15 Figure 11. Input Return Loss vs. Frequency for Various Temperatures 0 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V –5 OUTPUT RETURN LOSS (dB) 10 0 –5 –10 –15 –20 –10 –15 –20 –25 –30 –35 –25 –30 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) Figure 10. Input IP3 vs. Frequency for Various Supply Voltages –40 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 14258-010 INPUT IP3 (dBm) 5 TA = –40°C TA = +25°C TA = +85°C FREQUENCY (GHz) 14258-012 –30 14258-011 –35 –25 Figure 12. Output Return Loss vs. Frequency for Various Temperatures Rev. 0 | Page 7 of 15 ADL5721 Data Sheet HIGH BAND (BAND = 1.8 V) 35 30 10 TA = –40°C TA = +25°C TA = +85°C 9 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V 8 7 NOISE FIGURE (dB) GAIN (dB) 25 20 15 6 5 4 3 10 2 5 1 FREQUENCY (GHz) Figure 13. Gain vs. Frequency for Various Temperatures 35 30 14258-016 FREQUENCY (GHz) 14258-013 0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 Figure 16. Noise Figure vs. Frequency for Various Supply Voltages 0 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V TA = –40°C TA = +25°C TA = +85°C –5 INPUT P1dB (dBm) GAIN (dB) 25 20 15 –10 –15 –20 10 FREQUENCY (GHz) –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 14258-014 0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) Figure 14. Gain vs. Frequency for Various Supply Voltages 10 9 Figure 17. Input P1dB vs. Frequency for Various Temperatures 0 TA = –40°C TA = +25°C TA = +85°C 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V –5 8 INPUT P1dB (dBm) 7 6 5 4 3 –10 –15 –20 2 –25 0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) Figure 18. Input P1dB vs. Frequency for Various Supply Voltages Figure 15. Nosie Figure vs. Frequency for Various Temperatures Rev. 0 | Page 8 of 15 14258-018 1 14258-015 NOISE FIGURE (dB) 14258-017 –25 5 Data Sheet 20 ADL5721 0 TA = –40°C TA = +25°C TA = +85°C 15 –5 INPUT RETURN LOSS (dB) 10 5 INPUT IP3 (dBm) TA = –40°C TA = +25°C TA = +85°C 0 –5 –10 –15 –20 –10 –15 –20 –25 FREQUENCY (GHz) –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 14258-019 –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) Figure 19. Input IP3 vs. Frequency for Various Temperatures 20 15 Figure 21. Input Return Loss vs. Frequency for Various Temperatures 0 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V TA = –40°C TA = +25°C TA = +85°C –5 OUTPUT RETURN LOSS (dB) 10 5 0 –5 –10 –15 –20 –10 –15 –20 –25 –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) Figure 20. Input IP3 vs. Frequency for Various Supply Voltages –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) 14258-022 –25 14258-020 INPUT IP3 (dBm) 14258-021 –25 Figure 22. Output Return Loss vs. Frequency for Various Temperatures Rev. 0 | Page 9 of 15 ADL5721 Data Sheet THEORY OF OPERATION The ADL5721 is a narrow-band, high performance, low noise amplifier targeting microwave radio link receiver designs. The monolithic SiGe design is optimized for microwave radio link bands ranging from 5.9 GHz to 8.5 GHz. The unique design of the ADL5721 offers a single-ended 50 Ω input impedance and provides a 100 Ω balanced differential output. This LNA is ideal for driving Analog Devices differential downconverters and RF sampling ADCs. The ADL5721 provides cost-effective noise figure performance without requiring more expensive III-V compounds process technology. This LNA uses a band switch feature to allow the input P1dB and noise figure to trade off for optimum system performance. The BAND pin allows the user to select between two frequency ranges. A logic low of 0 V on the BAND pin selects the lower frequency range from 5.9 GHz to 7.2 GHz, whereas a logic high of 1.8 V selects the higher frequency range from 7.1 GHz to 8.5 GHz. The ADL5721 is available in an 8-lead, 2.00 mm × 2.00 mm LFCSP package, and operates over the temperature range of −40°C to +85°C. Rev. 0 | Page 10 of 15 Data Sheet ADL5721 APPLICATIONS INFORMATION LAYOUT 35 30 25 GAIN (dB) Solder the exposed pad on the underside of the ADL5721 to a low thermal and electrical impedance ground plane. This pad is typically soldered to an exposed opening in the solder mask on the evaluation board. Connect these ground vias to all other ground layers on the evaluation board to maximize heat dissipation from the device package. 20 15 10 0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) 14258-027 5 Figure 25. Gain vs. Frequency, BAND = 1.8 V 10 14258-023 9 This section provides the test results that compare the ADL5721 using a differential vs. a single-ended output. When using the device as a single-ended output, use the RFOP output of the evaluation board and terminate RFON to 50 Ω. Note that the converse can be done as well; however, doing so produces slightly different results from the plots shown in this section, caused by some amplitude imbalance between the two differential ports, RFOP and RFON. The output trace and connector loss were not deembedded for these measurements. 7 6 5 4 3 2 1 0 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) 14258-025 DIFFERENTIAL vs. SINGLE-ENDED OUTPUT NOISE FIGURE (dB) Figure 23. Evaluation Board Layout for the ADL5721 Package 8 Figure 26. Noise Figure vs. Frequency, BAND = 0 V 10 Note that this performance is typical and not guaranteed. 9 35 8 NOSIE FIGURE (dB) 30 20 15 6 5 4 3 2 10 5 0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 0 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) FREQUENCY (GHz) Figure 27. Noise Figure vs. Frequency, BAND = 1.8 V Figure 24. Gain vs. Frequency, BAND = 0 V Rev. 0 | Page 11 of 15 14258-028 1 14258-024 GAIN (dB) 25 7 ADL5721 Data Sheet 0 20 15 –5 10 INPUT P1dB (dBm) INPUT IP3 (dBm) 5 0 –5 –10 –15 –20 –10 –15 –20 –25 FREQUENCY (GHz) –30 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 14258-030 –30 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 FREQUENCY (GHz) Figure 28. Input IP3 vs. Frequency, BAND = 0 V 14258-032 –25 Figure 30. Input P1dB vs. Frequency, BAND = 0 V 20 0 15 –5 10 INPUT P1dB (dBm) 0 –5 –10 –15 –20 –10 –15 –20 –25 –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) –30 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 FREQUENCY (GHz) Figure 29. Input IP3 vs. Frequency, BAND = 1.8 V Figure 31. Input P1dB vs. Frequency, BAND = 1.8 V Rev. 0 | Page 12 of 15 14258-033 –25 14258-031 INPUT IP3 (dBm) 5 Data Sheet ADL5721 EVALUATION BOARD 20 The ADL5721-EVALZ comes with an ADL5721 chip. It supports a single 5 V supply for ease of use. For 5 V operation, the 3.3 V and 1.8 V test loops are for evaluation purposes only. When the 3.3 V and 1.8 V supply is used, remove the R1 and R2 resistors from the evaluation board. Figure 34 shows a picture of the ADL5721-EVALZ lab bench setup. POWER OUTPUT (dBm) –30 –40 –50 7.16 7.17 7.18 7.19 7.20 7.21 7.22 FREQUENCY (GHz) 7.23 7.24 7.25 14258-036 –80 7.15 Figure 32. Results of the ADL5721 with an Input of 7.2 GHz at −15 dBm, BAND = 0 V Power up the ADL5721-EVALZ with a 5 V dc supply. The supply current of the evaluation board is approximately 88 mA, which is a combination of the VCC1 (1.8 V) and the VCC2 (3.3 V) currents. Connect the signal generator to the input of the ADL5721EVALZ. Connect RFOP and RFON to a 180° hybrid that can work within the 5.9 GHz to 8.5 GHz frequency range. Connect the difference output of the hybrid to the spectrum analyzer. Terminate the sum port of the hybrid to 50 Ω. Figure 33 shows the results of the differential output for an input of 8.5 GHz at −15 dBm with a BAND = 1.8 V, with Pin 1 and Pin 2 of the P1 connector open. The hybrid and board loss were not deembedded. 20 0 See Figure 34 for the ADL5721-EVALZ lab bench setup. RESULTS Figure 32 and Figure 33 show the expected results when testing the ADL5721-EVALZ using the Rev. A version of the evaluation board and its software. Note that future iterations of the software may produce different results. See the ADL5721 product page for the most recent software version. –10 –20 –30 –40 –50 –60 –80 8.45 8.46 8.47 8.48 8.49 8.50 8.51 8.52 FREQUENCY (GHz) 8.54 8.55 Figure 33. Results of the ADL5721 with an Input of 8.5 GHz at −15 dBm, BAND = 1.8 V GND RFON SPECTRUM ANALYZER INPUT RFOP 180° HYBRID FOR DIFFERENTIAL TO SINGLE-ENDED OUTPUT Figure 34. ADL5721-EVALZ Lab Bench Setup Rev. 0 | Page 13 of 15 14258-035 RF FREQUENCY GENERATOR BAND 8.53 14258-037 –70 Figure 32 shows the results of the differential output for an input of 7.2 GHz at −15 dBm with a BAND = 0 V, with Pin 1 and Pin 2 of the P1 connector shorted. The hybrid and board loss were not deembedded. +5V DC RESOLUTION BANDWIDTH = 20kHz 2 VIDEO BANDWIDTH = 20kHz 10 SWEEP = 301ms (1001pts) POWER OUTPUT (dBm) 4. –20 –70 To set up the ADL5721-EVALZ, take the following steps: 3. –10 –60 INITIAL SETUP 2. 2 0 The band switch feature allows the input P1dB and noise figure to trade off for optimum system performance. For the lower frequency band (BAND = 0 V), short Pin 1 and Pin 2 of the P1 connector. For the higher frequency band (BAND = 1.8 V), open Pin 1 and Pin 2 of the P1 connector to obtain better system performance. 1. RESOLUTION BANDWIDTH = 20kHz VIDEO BANDWIDTH = 20kHz 10 SWEEP = 301ms (1001pts) ADL5721 Data Sheet BASIC CONNECTIONS FOR OPERATION Figure 35 shows the basic connections for operating the ADL5721 as it is implemented on the evaluation board of the device. 1.8V 3.3V C5 0.1UF C1 4.7NF AGND AGND C2 33PF C3 33PF AGND AGND C4 4.7NF C6 0.1UF AGND AGND OUTN DUTA 1 VCC1 2 GND 3 INPT 4 RBIAS RFIN 1 25-146-1000-92 CNSRI2516100092_SW109201A5 RFIN 2 3 4 AGND AGND 8 VCC2 7 OUTN 6 OUTP 5 BAND 572X_RFON 25-146-1000-92 4 3 2 CNSRI2516100092_SW109201A5 AGND PAD PAD ADL5721 RBIAS 442 1 OUTP AGND 1.8V 1 572X_RFOP 25-146-1000-92 4 3 2 CNSRI2516100092_SW109201A5 AGND AGND R4 10K BAND 5V RED 1 1 3P3V RED 1 1P8V RED 1 GND BLK P1 R3 1 2 0 5V 69157-102 3.3V 1.8V AGND AGND U2 U1 ADM7172ACPZ-3.3 R1 0 1 2 C7 4.7UF AGND VOUT VOUT VIN VIN EN SS SENSE EP GND PAD 6 5V 8 7 5 4 3 3.3V R2 0 C9 4.7UF AGND 1 C10 4.7UF AGND C8 1000PF AGND 2 VOUT VOUT VIN VIN EN SS SENSE EP GND PAD 6 5V 8 7 5 4 3 C12 4.7UF AGND C11 1000PF AGND AGND AGND 14258-034 ADM7170ACPZ-1.8 1.8V Figure 35. Evaluation Board Schematic Table 6. Evaluation Board Configuration Options Component 3P3V, 1P8V, GND, 5V RFIN, 572X_RFOP, 572x_RFON, BAND RBIAS R1, R2 R3 R4 C1 to C12 Function Power supplies and ground. Input, output, and data. 442 Ω for RBIAS. 1.8 V and 3.3 V regulator connections. Band select. Pull-up or pull-down resistor. The capacitors provide the required decoupling of the supply related pins. P1 U1 U2 DUTA Jumper to change bands, 2-pin jumper. ADM7170ACPZ-1.8 1.8 V regulator. ADM7172ACPZ-3.3 3.3 V regulator. ADL5721 device under test (DUT). Rev. 0 | Page 14 of 15 Default Condition Not applicable Not applicable RBIAS = 442 Ω (0402) R1, R2 = 0 Ω (0402) R3 = 0 Ω (0603) R4 = 10 kΩ (0402) C1, C4 = 4.7 nF (0402), C2, C3 = 33 pF (0402), C5, C6 = 0.1 µF (0402), C7, C9, C10, C12 = 4.7 µF (0603), C8, C11 = 1000 pF (0603) Not applicable Not applicable Not applicable Not applicable Data Sheet ADL5721 OUTLINE DIMENSIONS 1.70 1.60 1.50 2.10 2.00 SQ 1.90 0.50 BSC 8 5 1.10 1.00 0.90 EXPOSED PAD 0.425 0.350 0.275 1 4 TOP VIEW 0.60 0.55 0.50 BOTTOM VIEW 0.05 MAX 0.02 NOM SEATING PLANE 0.30 0.25 0.20 PIN 1 INDICATOR (R 0.15) FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. 0.20 REF 01-14-2013-C PIN 1 INDEX AREA 0.15 REF Figure 36. 8-Lead Lead Frame Chip Scale Package [LFCSP] 2.00 mm × 2.00 mm Body and 0.55 mm Package Height (CP-8-10) Dimensions shown in millimeters ORDERING GUIDE Model 1 ADL5721ACPZN ADL5721ACPZN-R7 ADL5721-EVALZ 1 Temperature Range −40°C to +85°C −40°C to +85°C Package Description 8-Lead Lead Frame Chip Scale Package [LFCSP] 8-Lead Lead Frame Chip Scale Package [LFCSP] Evaluation Board Z = RoHS-Compliant Part. ©2016 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D14258-0-4/16(0) Rev. 0 | Page 15 of 15 Package Option CP-8-10 CP-8-10