FEATURES FUNCTIONAL BLOCK DIAGRAM Frequency range: 21.2 GHz to 23.6 GHz Typical gain of >22.5 dB Low noise input Noise figure 3.3 dB typical at 21.2 GHz 3.4 dB typical at 23.6 GHz High linearity input 1.0 dBm typical input third-order intercept (IIP3) -8 dBm input 1 dB compression point (P1dB) at 23.6 GHz Matched 50 single-ended input Matched 100 differential outputs 8-lead, 2.00 mm x 2.00 mm LFCSP microwave packaging VCC1 50 SINGLE-ENDED ADL5726 GND VCC2 OUTN 100 DIFFERENTIAL OUTP INPT RBIAS DNC DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. 14320-001 Data Sheet 21.2 GHz to 23.6 GHz, Low Noise Amplifier ADL5726 Figure 1. APPLICATIONS Point to point microwave radios Instrumentation Satellite communications (SATCOM) Phased arrays GENERAL DESCRIPTION The ADL5726 is a narrow-band, high performance, low noise amplifier (LNA) targeting microwave radio link receiver designs. The monolithic silicon germanium (SiGe) design is optimized for microwave radio link bands ranging from 21.2 GHz to 23.6 GHz. The unique design offers a single-ended 50 input impedance and provides a 100 balanced differential output that is ideal for driving Analog Devices, Inc., differential downconverters and radio frequency (RF) sampling analog-to- Rev. A digital converters (ADCs). This LNA provides noise figure performance that, in the past, required more expensive threefive (III-V) compounds process technology to achieve. The ADL5721 and ADL5723 to ADL5726 family of narrowband LNAs are each packaged in a tiny, thermally enhanced, 2.00 mm x 2.00 mm LFCSP package. The ADL5721 and ADL5723 to ADL5726 family operates over the temperature range of -40C to +85C. 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 (c)2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADL5726 Data Sheet TABLE OF CONTENTS Features .....................................................................................1 Theory of Operation ................................................................. 8 Applications...............................................................................1 Applications Information .......................................................... 9 Functional Block Diagram.........................................................1 Layout.................................................................................... 9 General Description ..................................................................1 Differential vs. Single-Ended Output..................................... 9 Revision History ........................................................................2 Performance Up To 26.5 GHz.............................................. 10 Specifications.............................................................................3 Evaluation Board ..................................................................... 11 AC Specifications...................................................................3 Initial Setup ......................................................................... 11 DC Specifications...................................................................3 Results ................................................................................. 11 Absolute Maximum Ratings ......................................................4 Basic Connections for Operation......................................... 12 Thermal Resistance ................................................................4 Outline Dimensions ................................................................ 13 ESD Caution ..........................................................................4 Ordering Guide ................................................................... 13 Pin Configuration and Function Descriptions...........................5 Typical Performance Characteristics .........................................6 REVISION HISTORY 9/2016--Rev. 0 to Rev. A Changes to Figure 1 ...................................................................1 Added Performance Up To 26.5 GHz Section and Figure 18 to Figure 23; Renumbered Sequentially .........................................9 Changes to Figure 26 ...............................................................12 4/2016--Revision 0: Initial Version Rev. A | Page 2 of 13 Data Sheet ADL5726 SPECIFICATIONS AC SPECIFICATIONS VCC1 = 1.8 V, VCC2 = 3.3 V, RBIAS = 442 , TA = 25C, ZSOURCE = 50 , ZLOAD = 100 differential, unless otherwise noted. Table 1. Parameter FREQUENCY RANGE FREQUENCY = 21.2 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 = 23.6 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 21.2 f = 1 MHz, input power (PIN ) = -30 dBm per tone f = 1 MHz, PIN = -30 dBm per tone Typ Max 23.6 Unit GHz 24.7 3.3 1.0 -9.5 10 10 dB dB dBm dBm dB dB 22.5 3.4 3.0 -8 10 10 dB dB dBm dBm dB dB DC SPECIFICATIONS Table 2. Parameter POWER INTERFACE Voltage VCC1 VCC2 Quiescent Current vs. Temperature VCC1 VCC2 Test Conditions/Comments TA = 25C -40C TA +85C TA = 25C -40C TA +85C Rev. A | Page 3 of 13 Min Typ Max Unit 1.65 3.1 1.8 3.3 1.95 3.5 V V 14.1 15.4 74.4 77.0 mA mA mA mA ADL5726 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 150C/W -40C to +85C -55C to +125C -65C to +150C 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. JA is thermal resistance, junction to ambient (C/W), JB is thermal resistance, junction to board (C/W), and JC is thermal resistance, junction to case (C/W). Table 4. Thermal Resistance Package Type 8-Lead LFCSP 1 JA 1 39.90 JB1 23.88 JC1 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 x 4 vias. ESD CAUTION Rev. A | Page 4 of 13 Data Sheet ADL5726 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VCC1 1 INPT 3 RBIAS 4 8 VCC2 ADL5726 TOP VIEW (Not to Scale) 7 OUTN 6 OUTP 5 DNC NOTES 1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN. 2. THE EXPOSED PAD MUST BE SOLDERED TO A LOW IMPEDANCE GROUND PLANE. 3. THE DEVICE NUMBER ON THE FIGURE DOES NOT INDICATE THE LABEL ON THE PACKAGE. REFER TO THE PIN 1 INDICATOR FOR THE PIN LOCATIONS. 14320-002 GND 2 Figure 2. Pin Configuration Table 5. Pin Function Descriptions Pin No. 1 2 3 4 Mnemonic VCC1 GND INPT RBIAS 5 6, 7 8 DNC 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 is a 50 single-ended input. Resistor Bias. For typical operation, connect a 442 resistor from RBIAS to GND. It is recommended to place the RBIAS resistor as close to the pin as possible. Do Not Connect. Do not connect to this pin. RF Outputs. These pins are 100 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. A | Page 5 of 13 ADL5726 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 35 10 TA = -40C TA = +25C TA = +85C 30 9 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V 8 NOISE FIGURE (dB) GAIN (dB) 25 20 15 10 7 6 5 4 3 2 5 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) 0 21.2 14320-003 0 21.2 15 10 22.4 22.7 23.0 23.3 23.6 TA = -40C TA = +25C TA = +85C 5 INPUT P1dB (dBm) 25 20 15 10 0 -5 -10 -15 5 -20 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) -25 21.2 14320-004 0 21.2 9 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) Figure 4. Gain vs. Frequency for Various Supply Voltages 10 21.5 14320-007 GAIN (dB) 22.1 Figure 6. Noise Figure vs. Frequency for Various Supply Voltages 3.1V/1.65V 3.3V/1.8V 3.5V/1.95V 30 21.8 FREQUENCY (GHz) Figure 3. Gain vs. Frequency for Various Temperatures 35 21.5 14320-006 1 Figure 7. Input P1dB vs. Frequency for Various Temperatures 15 TA = -40C TA = +25C TA = +85C 10 3.1V 3.3V 3.5V 8 INPUT P1dB (dBm) 6 5 4 3 0 -5 -10 -15 2 0 21.2 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) Figure 5. Nosie Figure vs. Frequency for Various Temperatures -25 21.2 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) Figure 8. Input P1dB vs. Frequency for Various Supply Voltages Rev. A | Page 6 of 13 14320-008 -20 1 14320-005 NOISE FIGURE (dB) 5 7 Data Sheet 15 10 ADL5726 0 TA = -40C TA = +25C TA = +85C TA = -40C TA = +25C TA = +85C INPUT RETURN LOSS (dB) -5 INPUT IP3 (dBm) 5 0 -5 -10 -15 -10 -15 -20 -25 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) -30 21.2 14320-009 -25 21.2 10 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) Figure 9. Input IP3 vs. Frequency for Various Temperatures 15 21.5 14320-011 -20 Figure 11. Input Return Loss vs. Frequency for Various Temperatures 0 3.1V 3.3V 3.5V TA = -40C TA = +25C TA = +85C OUTPUT RETURN LOSS (dB) -5 0 -5 -10 -15 -10 -15 -20 -25 -25 21.2 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 FREQUENCY (GHz) Figure 10. Input IP3 vs. Frequency for Various Supply Voltages -30 21.2 21.5 21.8 22.1 22.4 22.7 FREQUENCY (GHz) 23.0 23.3 23.6 14320-012 -20 14320-010 INPUT IP3 (dBm) 5 Figure 12. Output Return Loss vs. Frequency for Various Temperatures Rev. A | Page 7 of 13 ADL5726 Data Sheet THEORY OF OPERATION The ADL5726 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 21.2 GHz to 23.6 GHz. The unique design of the ADL5726 offers a single-ended 50 input impedance via the INPT pin, and provides a 100 balanced differential output via the OUTP and OUTN pins. This LNA is ideal for driving Analog Devices differential downconverters and RF sampling ADCs. The ADL5726 provides cost-effective noise figure performance without requiring more expensive III-V compounds process technology. The ADL5726 is available in a 2.00 mm x 2.00 mm LFCSP package, and operates over the temperature range of -40C to +85C. Rev. A | Page 8 of 13 Data Sheet ADL5726 APPLICATIONS INFORMATION LAYOUT 10 9 8 NOISE FIGURE (dB) Solder the exposed pad on the underside of the ADL5726 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 the ground vias to all other ground layers on the evaluation board to maximize heat dissipation from the device package. 7 6 5 4 3 2 0 21.2 21.5 21.8 22.1 22.4 22.7 23.0 23.3 23.6 23.3 23.6 23.3 23.6 FREQUENCY (GHz) 14320-018 1 Figure 15. Noise Figure vs. Frequency 15 14320-016 10 This section provides the test results that compare the ADL5726 using a differential vs. 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 . Note that the converse can be done as well; however, doing so produces slightly different results from the plots shown in this section because there is some amplitude imbalance between the two differential ports, RFOP and RFON. The output trace and connector loss were not deembedded for these measurements. 0 -5 -10 -15 -20 -25 21.2 21.5 21.8 22.1 22.4 22.7 23.0 FREQUENCY (GHz) 14320-021 DIFFERENTIAL vs. SINGLE-ENDED OUTPUT INPUT IP3 (dBm) Figure 13. Evaluation Board Layout for the ADL5726 Package 5 Figure 16. Input IP3 vs. Frequency 15 35 10 30 INPUT P1dB (dBm) 5 20 15 -5 -10 -25 21.2 21.5 21.8 22.1 22.4 22.7 23.0 FREQUENCY (GHz) 23.3 23.6 21.5 21.8 22.1 22.4 22.7 23.0 FREQUENCY (GHz) Figure 17. Input P1dB vs. Frequency Figure 14. Gain vs. Frequency Rev. A | Page 9 of 13 14320-020 -20 5 0 21.2 0 -15 10 14320-017 GAIN (dB) 25 ADL5726 Data Sheet PERFORMANCE UP TO 26.5 GHz 10 35 30 8 INPUT FIGURE (dB) This section provides the test results at a higher frequency from 23.2 GHz to 26.5 GHz. Differential outputs are measured here. Traces, hybrids, and connector losses were deembeded for all measurements except output return loss. It is important to note that this performance is typical and not guaranteed. 4 20 0 23.6 24.0 24.5 25.0 25.5 26.0 26.5 FREQUENCY (GHz) 15 14320-121 2 25 GAIN (dB) 6 Figure 21. Noise Figure vs. Frequency 10 0 5 24.5 25.0 25.5 26.0 26.5 FREQUENCY (GHz) Figure 18. Gain vs. Frequency 15 10 -10 -15 -20 -25 0 -30 23.6 -5 24.0 24.5 25.0 25.5 26.0 26.5 FREQUENCY (GHz) -10 14320-122 INPUT P1dB (dBm) 5 INPUT RETURN LOSS (dB) 24.0 14320-118 -5 0 23.6 Figure 22. Input Return Loss vs. Frequency -15 0 -20 24.5 25.0 25.5 26.0 26.5 FREQUENCY (GHz) Figure 19. Input P1dB vs. Frequency 15 10 5 OUTPUT RETURN LOSS (dB) 24.0 14320-119 -5 -25 23.6 -10 -15 -20 24.0 24.5 25.0 25.5 26.0 FREQUENCY (GHz) -10 Figure 23. Output Return Loss vs. Frequency -15 -20 -25 23.6 24.0 24.5 25.0 25.5 FREQUENCY (GHz) 26.0 26.5 Figure 20. IIP3 vs. Frequency Rev. A | Page 10 of 13 26.5 14320-123 -30 23.6 -5 14320-120 IIP3 (dBm) -25 0 Data Sheet ADL5726 EVALUATION BOARD RESULTS The ADL5726-EVALZ comes with an ADL5726 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 using a 3.3 V or 1.8 V supply, remove the R1 and R2 resistors from the evaluation board. Figure 25 shows the ADL5726EVALZ lab bench setup. Figure 24 shows the expected results when testing the ADL5726-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 ADL5726 product page for the most recent software version. INITIAL SETUP Figure 24 shows the results of the differential output for an input of 21.2 GHz at -15 dBm. The hybrid and board loss have not been deembedded. To set up the ADL5726-EVALZ, take the following steps: 4. RESOLUTION BANDWIDTH = 20kHz VIDEO BANDWIDTH = 20kHz 10 SWEEP = 301ms (1001pts) 1 0 -10 -20 -30 -40 -50 -60 See Figure 25 for the ADL5726-EVALZ lab bench setup. -70 -80 21.15 21.16 21.17 21.18 21.19 21.20 21.21 21.22 21.23 21.24 21.25 FREQUENCY (GHz) Figure 24. Test Results at 21.2 GHz +5V DC GND RFON SPECTRUM ANALYZER INPUT RFOP RF FREQUENCY GENERATOR 180 HYBRID FOR DIFFERENTIAL TO SINGLE ENDED OUTPUT Figure 25. ADL5726-EVALZ Lab Bench Setup Rev. A | Page 11 of 13 14320-013 3. 20 14320-014 2. Power up the ADL5726-EVALZ with a 5 V dc supply. The supply current of the evaluation board is approximately 90 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 ADL5726EVALZ. Connect RFOP and RFON to a 180 hybrid that works within the 21.2 GHz to 23.6 GHz frequency range. Connect the difference output of the hybrid to the spectrum analyzer. The sum port of the hybrid must be terminated to 50 . POWER OUTPUT (dBm) 1. ADL5726 Data Sheet BASIC CONNECTIONS FOR OPERATION Figure 26 shows the basic connections for operating the ADL5726 as it is implemented on the evaluation board of the device. 1.8V 3.3V C5 0.1UF C1 4.7NF C2 33PF C3 33PF C4 4.7NF C6 0.1UF AGND AGND AGND AGND AGND AGND OUTN 1 572X_RFON 25-146-1000-92 4 3 2 CNSRI2516100092_SW109201A5 DUTA 1 VCC1 2 GND 3 INPT 4 RBIAS RFIN 1 RFIN 25-146-1000-92 2 3 4 CNSRI2516100092_SW109201A5 AGND AGND RBIAS 442 8 VCC2 7 OUTN 6 OUTP 5 DNC AGND PAD PAD ADL5726 OUTP AGND 1.8V 1 572X_RFOP 25-146-1000-92 4 3 2 CNSRI2516100092_SW109201A5 AGND AGND 1 R4 10K DNI R3 5V RED 1 3P3V RED 1 1P8V RED 1 GND BLK P1 1 2 0 5V 3.3V 1.8V AGND 69157-102HLF AGND U1 U2 R1 0 C7 4.7UF AGND 1 VOUT 2 VOUT VIN VIN EN SS SENSE EP GND PAD 6 ADM7172ACPZ-3.3 5V 8 7 5 4 3 C9 4.7UF AGND C8 1000PF AGND 3.3V R2 0 C10 4.7UF AGND 1 2 VOUT1 VOUT2 VIN1 VIN2 EN SS SENSE EP GND PAD 6 5V 8 7 5 4 3 C12 4.7UF AGND C11 1000PF AGND AGND AGND 14320-015 ADM7170ACPZ-1.8 1.8V Figure 26. Evaluation Board Schematic Table 6. Evaluation Board Configuration Options Component 3P3V, 1P8V, GND, 5V RFIN, 572X_RFOP, 572x_RFON RBIAS R1, R2 R3 R4 C1 to C12 Function Power supplies and ground. Input, output, and data. 442 for RBIAS. 1.8 V and 3.3 V regulator connections. Do not install (DNI). Pull-up or pull-down resistor. The capacitors provide the required decoupling for 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. ADL5726 device under test (DUT). Rev. A | Page 12 of 13 Default Condition Not applicable Not applicable RBIAS = 442 (0402) R1, R2 = 0 (0402) R3 = DNI (0402) R4 = 10 k (0402) C1, C4 = 4.7 nF (0402) C2, C3 = 33 pF (0402), C5, C6 = 0.1 F (0402), C7, C9, C10, C12 = 4.7 F (0603), C8, C11 = 1000 pF (0603) Not applicable Not applicable Not applicable Not applicable Data Sheet ADL5726 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 SEATING PLANE BOTTOM VIEW 0.05 MAX 0.02 NOM 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 27. 8-Lead Lead Frame Chip Scale Package [LFCSP] 2.00 mm x 2.00 mm Body, and 0.55 mm Package Height (CP-8-10) Dimensions shown in millimeters ORDERING GUIDE Model 1 ADL5726ACPZN-R7 ADL5726-EVALZ 1 Temperature Range -40C to +85C Package Description 8-Lead Lead Frame Chip Scale Package [LFCSP] Evaluation Board Z = RoHS-Compliant Part. (c)2016 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D14320-0-9/16(A) Rev. A | Page 13 of 13 Package Option CP-8-10