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| 20 MHz to 500 MHz IF Gain Block ADL5531 FEATURES Fixed gain of 20 dB Operation up to 500 MHz Input/output internally matched to 50 Integrated bias control circuit Output IP3 41 dBm at 70 MHz 39 dBm at 190 MHz Output 1 dB compression: 20.6 dB at 190 MHz Noise figure: 2.5 dB at 190 MHz Single 5 V power supply Small footprint 8-lead LFCSP ADL5532 15 dB gain version ADL5534 20 dB gain dual-channel version 2 kV ESD (Class 2) FUNCTIONAL BLOCK DIAGRAM ADL5531 NC 1 RFIN 2 NC 3 NC 4 BIAS CONTROL LINEARIZER 8 NC 7 RFOUT 6 NC 5 CLIN 06833-001 NC = NO CONNECT Figure 1. GENERAL DESCRIPTION The ADL5531 is a broadband, fixed-gain, linear amplifier that operates at frequencies up to 500 MHz. The device can be used in a wide variety of equipment, including cellular, satellite, broadband, and instrumentation equipment. The ADL5531 provides a gain of 20 dB, which is stable over frequency, temperature, power supply, and from device to device. This amplifier is single-ended and internally matched to 50 . Only input/output ac coupling capacitors, power supply decoupling capacitors, and external inductors are required for operation. The ADL5531 is fabricated on a GaAs HBT process and has an ESD rating of 2 kV (Class 2). The device is packaged in an 8-lead 3 mm x 3 mm LFCSP that uses an exposed paddle for excellent thermal impedance. The ADL5531 consumes 100 mA on a single 5 V supply and is fully specified for operation from -40C to +85C. The 15 dB gain version, ADL5532, and the dual-channel 20 dB gain version, ADL5534, are also available. Rev. 0 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 www.analog.com Fax: 781.461.3113 (c)2007 Analog Devices, Inc. All rights reserved. ADL5531 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Typical Scattering Parameters..................................................... 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ..............................................7 Basic Connections .............................................................................9 Soldering Information and Recommended PCB Land Pattern ..........................................................................................................9 Evaluation Board ............................................................................ 10 Outline Dimensions ....................................................................... 11 Ordering Guide .......................................................................... 11 REVISION HISTORY 8/07--Revision 0: Initial Version Rev. 0 | Page 2 of 12 ADL5531 SPECIFICATIONS VPOS = 5 V and TA = 25C, unless otherwise noted. Table 1. Parameter OVERALL FUNCTION Frequency Range Gain (S21) Input Return Loss (S11) Output Return Loss (S22) Reverse Isolation (S12) FREQUENCY = 70 MHz Gain vs. Frequency vs. Temperature vs. Supply Output 1 dB Compression Point Output Third-Order Intercept Noise Figure FREQUENCY = 190 MHz Gain vs. Frequency vs. Temperature vs. Supply Output 1 dB Compression Point Output Third-Order Intercept Noise Figure FREQUENCY = 380 MHz Gain vs. Frequency vs. Temperature vs. Supply Output 1 dB Compression Point Output Third-Order Intercept Noise Figure POWER INTERFACE Supply Voltage Supply Current vs. Temperature Power Dissipation Conditions Min 20 190 MHz 190 MHz 190 MHz 190 MHz 20.3 -19.5 -26.5 -23.0 20.9 0.03 0.22 0.19 20.4 41.0 2.5 19.7 50 MHz -40C TA +85C 4.75 V to 5.25 V f = 1 MHz, output power (POUT) = 0 dBm per tone 20.3 0.12 0.22 0.17 20.6 39.0 2.5 19.7 0.15 0.24 0.15 20.4 36.0 3.0 5 100 15 0.5 21.0 Typ Max 500 Unit MHz dB dB dB dB dB dB dB dB dBm dBm dB dB dB dB dB dBm dBm dB dB dB dB dB dBm dBm dB V mA mA W 5 MHz -40C TA +85C 4.75 V to 5.25 V f = 1 MHz, output power (POUT) = 0 dBm per tone 19.2 50 MHz -40C TA +85C 4.75 V to 5.25 V f = 1 MHz, output power (POUT) = 0 dBm per tone Pin RFOUT 4.75 -40C TA +85C VPOS = 5 V 20.5 5.25 110 Rev. 0 | Page 3 of 12 ADL5531 TYPICAL SCATTERING PARAMETERS VPOS = 5 V and TA = 25C. The effects of the test fixture have been de-embedded up to the pins of the device. Table 2. Frequency (MHz) 20 50 100 150 200 250 300 350 400 450 500 S11 Magnitude (dB) -19.9933 -19.6622 -17.9244 -18.4041 -18.6386 -19.2303 -19.4456 -20.1783 -20.2409 -20.7266 -20.6064 Angle () -132.614 -151.093 -166.031 -177.116 +179.6269 +175.3384 +175.0622 +173.422 +174.1593 +175.6233 +175.853 S21 Magnitude (dB) 21.99753 21.20511 20.83152 20.67117 20.56097 20.45422 20.34563 20.21365 20.07116 19.90932 19.72779 Angle () 173.7349 170.3258 167.5595 164.1871 160.4721 156.5272 152.4398 148.3008 144.2311 140.0789 135.9952 S12 Magnitude (dB) -24.2574 -23.4894 -23.22 -23.0914 -22.9921 -22.9219 -22.8475 -22.7662 -22.665 -22.5569 -22.4519 Angle () 4.854191 5.603544 6.119636 6.631844 7.784913 8.763143 9.908631 11.21706 12.36953 13.57857 14.73385 S22 Magnitude (dB) -19.1444 -21.4752 -23.0386 -23.335 -22.8555 -21.6619 -20.2707 -18.7007 -17.1242 -15.726 -14.41 Angle () -46.7161 -89.9497 -115.741 -119.722 -115.855 -111.307 -106.681 -104.369 -103.565 -103.863 -105.079 Rev. 0 | Page 4 of 12 ADL5531 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage on RFOUT Input Power on RFIN Internal Power Dissipation (Paddle Soldered) JA (Junction to Air) Maximum Junction Temperature Operating Temperature Range Storage Temperature Range ESD Rating--Human Body Model Rating 5.5 V 10 dBm 600 mW 103C/W 150C -40C to +85C -65C to +150C 2 kV ESD CAUTION Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Rev. 0 | Page 5 of 12 ADL5531 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS NC 1 RFIN 2 NC 3 NC 4 PIN 1 INDICATOR 8 NC 7 RFOUT 6 NC 5 CLIN 06833-002 ADL5531 TOP VIEW (Not to Scale) NC = NO CONNECT Figure 2. Pin Configuration Table 4. Pin Function Descriptions Pin No. 1, 3, 4, 6, 8 2 5 7 Mnemonic NC RFIN CLIN RFOUT Exposed Paddle Description No Connect RF Input. Requires a 10 nF dc blocking capacitor. A 1 nF capacitor connected between Pin 5 and ground provides decoupling for the on-board linearizer. RF Output and Bias. DC bias is provided to this pin through a 470 nH inductor (Coilcraft 1008CS-471XJLC or equivalent). RF path requires a 10 nF dc blocking capacitor. GND. Solder this paddle to a low impedance ground plane. Rev. 0 | Page 6 of 12 ADL5531 TYPICAL PERFORMANCE CHARACTERISTICS 22 20 18 16 GAIN 45 42 39 36 22.0 +85C 23.0 22.5 +25C -40C 42 40 38 36 +85C 34 +25C 32 -40C 20.0 19.5 19.0 30 28 26 500 OIP3 NF, GAIN (dB) P1dB (dBm) 14 12 10 8 6 4 2 0 0 50 100 150 200 250 300 350 400 450 P1dB NF 33 30 27 24 21 18 15 P1dB, OIP3 (dBm) 21.0 20.5 06833-003 0 50 100 150 200 250 300 350 400 450 FREQUENCY (MHz) FREQUENCY (MHz) Figure 3. Noise Figure (NF), Gain, P1dB, and OIP3 vs. Frequency 21.4 21.2 21.0 20.8 20.6 -40C Figure 6. OIP3 and P1dB vs. Frequency and Temperature 42 20MHz 40 38 36 190MHz 70MHz OIP3 (dBm) GAIN (dB) 20.4 20.2 20.0 19.8 19.6 19.4 19.2 06833-004 34 32 30 380MHz 500MHz +25C +85C 28 26 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 06833-007 06833-008 19.0 0 50 100 150 200 250 300 350 400 450 500 24 -8 FREQUENCY (MHz) POUT PER TONE (dBm) Figure 4. Gain vs. Frequency and Temperature 0 -5 -10 5.0 4.5 4.0 3.5 Figure 7. OIP3 vs. Output Power (POUT) and Frequency S-PARAMETERS (dB) -15 -20 -25 -30 -35 S22 (dB) 0 50 100 -40 S11 (dB) S12 (dB) NOISE FIGURE (dB) +85C 3.0 +25C 2.5 2.0 1.5 -40C 150 200 250 300 350 400 450 500 06833-005 0 50 100 150 200 250 300 350 400 450 500 FREQUENCY (MHz) FREQUENCY (MHz) Figure 5. Input Return Loss, Output Return Loss, and Reverse Isolation vs. Frequency Figure 8. Noise Figure vs. Frequency and Temperature Rev. 0 | Page 7 of 12 06833-006 12 500 OIP3 (dBm) 21.5 ADL5531 45 40 35 5.0 4.5 4.0 PERCENTAGE (%) 30 25 20 15 10 5 06833-009 NOISE FIGURE (dB) 3.5 3.0 2.5 2.0 1.5 1.0 37.9 38.3 38.7 39.1 39.5 39.9 40.3 0 50 100 150 200 250 300 350 400 450 500 OIP3 (dBm) FREQUENCY (MHz) Figure 9. OIP3 Distribution at 190 MHz 60 Figure 12. Noise Figure vs. Frequency at 25C, Multiple Devices Shown 150 140 130 5.25V 50 PERCENTAGE (%) 40 SUPPLY CURRENT (mA) 120 110 100 90 80 70 60 0 10 20 30 40 50 60 70 80 90 06833-013 30 5V 20 10 4.75V 20.2 20.4 20.6 20.8 21.0 21.2 21.4 P1dB (dBm) 06833-010 0 20.0 50 -40 -30 -20 -10 TEMPERATURE (C) Figure 10. P1dB Distribution at 190 MHz 50 45 40 Figure 13. Supply Current vs. Supply Voltage and Temperature PERCENTAGE (%) 35 30 25 20 15 10 5 0 19.7 19.8 19.9 20.0 20.1 20.2 20.3 20.4 20.5 20.6 20.7 20.8 20.9 21.0 GAIN (dB) Figure 11. Gain Distribution at 190 MHz Rev. 0 | Page 8 of 12 06833-011 06833-012 0 37.5 ADL5531 BASIC CONNECTIONS The basic connections for operating the ADL5531 are shown in Figure 15. The input and output are ac-coupled with 10 nF (0402) capacitors. DC bias is provided to the amplifier via an inductor (Coilcraft 1008CS-471XJLC or equivalent) connected to the RFOUT pin. The bias voltage should be decoupled using 10 nF and 1 F capacitors. 2.03mm 1 8 1.85mm 1.53mm 0.71mm Figure 14 shows the recommended land pattern for ADL5531. To minimize thermal impedance, the exposed paddle on the package underside is soldered down to a ground plane. If multiple ground layers exist, they are stitched together using vias (a minimum of five vias is recommended). Pin 1, Pin 3, Pin 4, Pin 6 and Pin 8 can be left unconnected or can be connected to ground. Connecting these pins to ground slightly enhances thermal impedance. For more information on land pattern design and layout, refer to Application Note AN-772, A Design and Manufacturing Guide for the Lead Frame Chip Scale Package (LFCSP). Figure 14. Recommended Land Pattern VPOS (TESTLOOP RED) L1 470nH C5 10nF C6 1F W1 GND (TESTLOOP BLACK) ADL5531 RFIN C1 10nF 1 NC 2 RFIN 3 NC 4 NC NC 8 RFOUT 7 NC 6 CLIN 5 10nF C2 RFOUT NC = NO CONNECT Figure 15. Basic Connections Rev. 0 | Page 9 of 12 06833-014 C3 1nF 06833-015 SOLDERING INFORMATION AND RECOMMENDED PCB LAND PATTERN 4 5 1.78mm 0.5mm ADL5531 EVALUATION BOARD Figure 18 shows the schematic for the ADL5531 evaluation board. The board is powered by a single supply of 5 V. The components used on the board are listed in Table 5. Power can be applied to the board through clip-on leads or through Jumper W1. Note that C4, C7, C8, L3, L4, L5, R1, and R2 have no function. 06833-016 Figure 16. Evaluation Board Layout (Bottom) Figure 17. Evaluation Board Layout (Top) L5 OPEN C4 OPEN L1 470nH C5 10nF C6 1F W1 VPOS (TESTLOOP RED) ADL5531 RFIN C1 10nF L2 0 C8 OPEN R1 OPEN L3 OPEN C7 OPEN NC = NO CONNECT 1 NC 2 RFIN 3 NC 4 NC NC 8 RFOUT 7 NC 6 CLIN 5 R2 OPEN C3 1nF L4 OPEN 10nF C2 GND (TESTLOOP BLACK) RFOUT Z1 06833-018 Figure 18. Evaluation Board Schematic Table 5. Evaluation Board Configuration Options Component Z1 C1, C2 C3 C5 C6 C4, C7, C8 R1, R2 L1 L2 L3, L4, L5 VPOS, GND W1 RFIN, RFOUT Function DUT AC coupling capacitors Linearizer capacitor Power supply decoupling capacitor Power supply decoupling capacitor Default Value ADL5531 10 nF, 0402 1 nF, 0603 10 nF, 0603 1 F, 0603 Open Open 470 nH, 1008 (Coilcraft 1008CS-471XJLC or equivalent) 0 , 0402 Open VPOS, GND W1 RFIN, RFOUT DC bias inductor Clip-on terminals for power supply 2-pin jumper for connection of ground and supply via cable 50 SMA female connectors Rev. 0 | Page 10 of 12 06833-017 ADL5531 OUTLINE DIMENSIONS 3.25 3.00 SQ 2.75 0.60 MAX 0.60 MAX 5 8 0.50 BSC PIN 1 INDICATOR TOP VIEW 2.95 2.75 SQ 2.55 EXPOSED PAD (BOT TOM VIEW) 1.60 1.45 1.30 PIN 1 INDICATOR 4 1 0.90 MAX 0.85 NOM SEATING PLANE 12 MAX 0.70 MAX 0.65 TYP 0.50 0.40 0.30 0.05 MAX 0.01 NOM 1.89 1.74 1.59 Figure 19. 8-Lead Lead Frame Chip Scale Package [LFCSP_VD] 3 mm x 3 mm Body, Very Thin, Dual Lead CP-8-2 Dimensions shown in millimeters ORDERING GUIDE Model ADL5531ACPZ-R7 1 ADL5531-EVALZ1 1 Temperature Range -40C to +85C Package Description 8-Lead LFCSP_VD, Tape and Reel Evaluation Board Package Option CP-8-2 061507-B 0.30 0.23 0.18 0.20 REF Branding Q16 Z = RoHS Compliant Part. Rev. 0 | Page 11 of 12 ADL5531 NOTES (c)2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06833-0-8/07(0) Rev. 0 | Page 12 of 12 |
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