EV-ADF4159EB2Z

Evaluation Board User Guide UG-383 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluating the ADF4159 Frequency Synthesizer for Phase-Locked Loops FEATURES REQUIRED SOFTWARE Self-contained board, including synthesizer, 100 MHz reference, USB interface, and voltage regulators Accompanying software allows control of synthesizer functions from a PC (via USB interface) Externally powered by 5.5 V and 15 V supplies Analog Devices ADF4158-9 evaluation software, Version 4.x or higher (included on the CD in the evaluation board kit or available for download at www.analog.com) GENERAL DESCRIPTION The EV-ADF4159EB1Z/EV-ADF4159EB2Z/EV-ADF4159EB3Z evaluates the performance of the ADF4159 frequency synthesizer for phase-locked loops (PLL). A photograph of the evaluation board is shown in Figure 1. The evaluation board involves the ADF4159 synthesizer, a USB connector, SMA connectors, a reference oscillator, and power supply connectors. There are also footprints for active filter components and a voltage controlled oscillator (VCO); if used, these components must be soldered to the board to complete the loop. An on-board temperature compensated crystal oscillator (TCXO) provides the 100 MHz reference frequency, and a USB cable is included to connect the board to a PC USB port. EVALUATION KIT CONTENTS EV-ADF4159EB1Z, EV-ADF4159EB2Z, or EV-ADF4159EB3Z evaluation board CD with evaluation software USB cable REQUIRED ADDITIONAL EQUIPMENT VCO (for EV-ADF4159EB2Z and EV-ADF4159EB3Z) Loop filter components (for EV-ADF4159EB2Z and EV-ADF4159EB3Z) Soldering equipment Spectrum analyzer Power supplies (5.5 V and 15 V) Windows®-based PC with USB port for evaluation software In addition, the evaluation kit contains Windows-based software to allow easy programming of the synthesizer. REQUIRED DOCUMENTS ADF4159 data sheet UG-383 user guide 10572-001 EVALUATION BOARD PHOTOGRAPH Figure 1. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 16 UG-383 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Output Signals ...............................................................................3 Evaluation Kit Contents ................................................................... 1 Loop Filter ......................................................................................4 Required Additional Equipment .................................................... 1 VCO Configuration ..........................................................................5 Required Documents ....................................................................... 1 EV-ADF4159EB1Z........................................................................5 Required Software ............................................................................ 1 EV-ADF4159EB2Z........................................................................5 General Description ......................................................................... 1 EV-ADF4159EB3Z........................................................................5 Evaluation Board Photograph ......................................................... 1 Evaluation Setup ................................................................................6 Revision History ............................................................................... 2 Getting Started ...................................................................................7 Evaluation Board Hardware ............................................................ 3 Installing the Software ..................................................................7 Overview........................................................................................ 3 Configuring and Setting up the Board .......................................7 Power Supplies .............................................................................. 3 Using the Software—Main Controls ...........................................8 Local Oscillator ............................................................................. 3 Using the Software—Ramp and Shift-Key Controls ................9 VCO................................................................................................ 3 Evaluation Board Schematics........................................................ 10 REVISION HISTORY 8/13—Revision 0: Initial Version Rev. 0 | Page 2 of 16 Evaluation Board User Guide UG-383 EVALUATION BOARD HARDWARE OVERVIEW LOCAL OSCILLATOR The evaluation board kit includes a cable for connecting the evaluation board to the USB port of a PC. The silkscreen for the evaluation board is show in Figure 2, and the schematics for the evaluation board are shown in Figure 10 to Figure 13. The 100 MHz TXCO provides the reference frequency. To ensure that the PFD frequency is also 100 MHz, set the on-chip R-divider to 1. POWER SUPPLIES The evaluation board is powered by a 5.5 V power supply connected to the red and black banana connectors. Connect the red connector to a 5.5 V power supply and the black connector to ground. The op amp is powered by a 15 V power supply. Optionally, the VCO can be powered independently by connecting a 5 V supply to the VVCO SMA and removing R27. When this option is used, reduce the voltage on the banana connectors to 5 V. VCO The VCO configuration is different for each evaluation board model: EV-ADF4159EB1Z, EV-ADF4159EB2Z, and EV-ADF4159EB3Z. See the VCO Configuration section for more information. OUTPUT SIGNALS With a VCO connected, the evaluation board outputs the VCO output on the EXT_VCOOUT SMA and the VCO output is divided by 2 on the VCO/2 SMA. 10572-002 The USB section of the evaluation board (see the area bounded by the gold box in Figure 1) is powered by the USB host. Alternatively, an external reference can be used by connecting the reference to the REFIN SMA and removing R10 and L1. Figure 2. Evaluation Board Silkscreen Rev. 0 | Page 3 of 16 UG-383 Evaluation Board User Guide LOOP FILTER Sample Loop Filter The loop filter schematic is included in Figure 13. The general placement of loop filter components is shown in Figure 3. When using a loop filter, calculate the values of the necessary components and solder them to the board. The ADIsimPLL software, which is available on the CD included in the evaluation board kit or from www.analog.com/adisimpll, provides tools for designing loop filters and calculating component values. Use the parameters of the sample loop filter described in this section as a guide for adding a loop filter onto the evaluation board. After soldering the loop filter components to the evaluation board, connect a 15 V supply to the op amp power supplies, a 15 V supply to the red 15 V test point, and the ground to the black AGND test point (see Figure 1). See the Sample Loop Filter section for an example configuration. The sample loop filter is designed for • • • • • VCO kV = 150 MHz/V PFD frequency = 100 MHz Charge pump current = 2.5 mA Loop bandwidth = 152 kHz Phase margin = 46.8° Table 1. Sample Loop Filter Components Values C1 Component R1 R2 R3 C1 C2 C3 C4 R1 R2 C3 Refer to Figure 3 for proper placement of components and to Table 1 for recommended component values. OP AMP C2 C4 10572-003 R3 Figure 3. Placement of Loop Filter Components Rev. 0 | Page 4 of 16 Value 220 Ω 300 Ω 1 kΩ 120 pF 8.2 nF 270 pF 270 pF Evaluation Board User Guide UG-383 VCO CONFIGURATION EV-ADF4159EB1Z EV-ADF4159EB3Z The EV-ADF4159EB1Z evaluation board has a MACOM VCO (MAOC-009269) with a range of 11.4 GHz to 12.8 GHz installed. The RFOUT signal is connected to the EXT_VCOOUT SMA. The RFOUT/2 signal of the VCO is fed back to the ADF4159 PLL; therefore, when the VCO outputs 12 GHz, the ADF4159 is locked at 6 GHz. The EV-ADF4159EB3Z evaluation board does not have a VCO installed. The board is configured for use with an external VCO board. Connect an external VCO to the evaluation board using SMA cables. There are two configuration options: For optimum performance, ensure that the components values are as described in Table 2. • • Table 2. Component Values for EV-ADF4159EB1Z Component R73 C29 R31, R34, R51, R62, R68, R70, R71, R72 (Bottom Layer) C40, C62, C63, C64, C65, C66, C70, C71, C75, C76 L3, L4 1 Value1 0Ω 100 pF DNP For optimum performance, ensure that the component values are as shown in Table 4. Table 4. Component Values for EV-ADF4159EB3Z DNP Component R34 R31 C29 DNP DNP is do not populate. 1 Terminate the VCO/2 SMA with 50 Ω.. DNP is do not populate. EV-ADF4159EB2Z The EV-ADF4159EB2Z evaluation board does not have a VCO installed. The board is configured for a standard 32-lead LFCSP footprint for a microwave VCO. The RFOUT signal is connected to the EXT_VCOOUT SMA. The RFOUT/2 signal of the VCO is fed back to the ADF4159 PLL; therefore, when the VCO outputs 12 GHz, the ADF4159 is locked at 6 GHz. For optimum performance, ensure that the component values are as shown in Table 3. Table 3. Component Values for EV-ADF4159EB2Z Component R31, R34 C29 The VCO control voltage can be connected to the VTUNE SMA, and the VCO RFOUT signal can be connected to the VCO/2 SMA. This configuration uses the on-board loop filter. The CPOUT SMA can be used to connect the ADF4159 charge pump output to an external loop filter. Connect the VCO RFOUT signal to the VCO/2 SMA to feed the signal back into the ADF4159. Value DNP 100 pF The evaluation board hosts two bias networks for maximum compatibility with all VCOs. Terminate the VCO/2 SMA with 50 Ω. Rev. 0 | Page 5 of 16 Value1 50 Ω DNP DNP UG-383 Evaluation Board User Guide EVALUATION SETUP REFERENCE CRYSTAL TO PC GND ADF4159 15V 50Ω TERMINATION VCO TO SPECTRUM ANALYZER Figure 4. Evaluation Setup Block Diagram 10572-005 5.5V OP AMP 10572-004 GND Figure 5. Evaluation Setup Rev. 0 | Page 6 of 16 Evaluation Board User Guide UG-383 GETTING STARTED INSTALLING THE SOFTWARE 4. For the software installation procedure, see the UG-476 user guide. The control software for the EV-ADF4159EB1Z, EVADF4159EB2Z, and EV-ADF4159EB3Z is provided on the CD included in the evaluation board kit. 5. CONFIGURING AND SETTING UP THE BOARD Set up the circuit as shown in Figure 4. Run the ADF4158-9 software. Select ADF4159 and USB board (green), and then click Connect (see Figure 6). 6. 10572-007 1. 2. 3. Click the Main Controls tab to view the main controls (see Figure 7). The default values are set to lock a VCO at 12 GHz. Click Write All Registers (7, 6, 6, 5, 5, 4, 4, 3, 2, 1, 0) or manually write to each register (Write R7, Write R6 - Ramp 1, Write R6 - Ramp 2, Write R5 - Ramp 1, Write R5 - Ramp 2, Write R4 - Ramp 1, Write R4 - Ramp 2, Write R3, Write R2, Write R1, and Write R0). On the spectrum analyzer, confirm that the output signal is locked at 12 GHz. Figure 6. Software—Device Selection Rev. 0 | Page 7 of 16 UG-383 Evaluation Board User Guide USING THE SOFTWARE—MAIN CONTROLS Use the Main Controls tab to select the RL and PLL settings. Because the evaluation board is set up to feedback the VCO/2 output to the ADF4159, in the RF Settings area, set the RF VCO Output Frequency to half the VCO output. Set the Reference Frequency to be the same as the applied reference signal. The PFD frequency is calculated from the reference frequency, the R-counter, the reference doubler, and the reference-divide-by-2. Ensure that the value in the PFD Frequency box matches the value specified in the loop filter design. The Muxout drop-down box allows you to choose the signal that is connected to the output of the MUXOUT pin. Clicking Pulse TXdata triggers a pulse on the TXDATA pin. This pulse starts low and then stays high for approximately 4 µs. The register values are shown at the bottom of the window. When the background of a register value is green, this indicates that the value has been changed and needs to be written to the part. Clicking the button below each register value writes that value to the part. 10572-008 In the PLL Settings area, program the Charge Pump Setting to the value for which the loop filter was designed. Program the Phase Detector Polarity to negative when using an inverting active loop filter configuration (as is on this evaluation board). Figure 7. Software—Main Controls Rev. 0 | Page 8 of 16 Evaluation Board User Guide UG-383 USING THE SOFTWARE—RAMP AND SHIFT-KEY CONTROLS In the Ramps and Shift-keying tab, you can configure the ramping and shift-keying functionality of the ADF4159. The ramp type can be selected in the Ramp mode drop-down box, and the various ramp parameters can be set in CLK1 and Up Ramp boxes. Example Figure 8 shows the ramping and shift-keying settings for an example of a continuous triangular ramp of 128 up ramp steps over 50 MHz with an up ramp time of 96 µs. (Up ramp refers to the ramp from the initial frequency to the end frequency, whereas down ramp refers to the ramp/jump from the end frequency back to the initial frequency.) For 50 MHz, the PLL is programmed for a 25 MHz ramp because the evaluation board uses the RFOUT/2 signal. After each parameter is set in the software, it needs to be written to the part. 10572-006 The other options in this tab allow configuring the various ramps and shift-keying controls of the ADF4159. 10572-009 Figure 8. Example of Ramp Figure 9. Software—Ramp Controls Rev. 0 | Page 9 of 16 Rev. 0 | Page 10 of 16 Figure 10. Evaluation Board Schematic (Page 1) LE DATA CLK L1 470Ω AT 100MHz R61 10pF R59 DNP 330Ω 330Ω R19 R9 AGND 330Ω R18 AGND AGND AGND R64 10kΩ Y3 GND 2 AGND AGND R17 390Ω R13 390Ω CLK DATA LE AGND Y1 COMP 5 GND 3 100.0MHz RF_OUT 4 TX-500 R15 390Ω 1 VC 6 VS RF-OUT 5 GND 3 1 TRI AGND RF_OUT 4 6 VS VFXO321-BBEC-100MHz 1 E/D REFIN T1 CE C11 R53 330Ω AGND TXDATA TXD R10 91Ω DNP R11 1nF CE 10pF C18 1nF 390Ω R65 AGND DNP R12 C12 AGND R14 R7 10kΩ +1.8V 0.1µF C20 R5 0Ω +3V AGND AGND 12 TXDATA 16 LE 15 DATA 14 CLK 9 REFIN 13 CE AGND 10pF 0.1µF C10 C9 R63 0Ω +1.8V U1 ADF4159 VP 17 5 23 20 24 RFINB 4 MUXOUT RFINA RSET SW2 CP 21 22 10pF C19 C16 C7 AGND C42 100pF 5.1kΩ R4 TSW2 10pF 0.1µF AGND TSW1 VP 0.1µF C21 R48 0Ω +1.8V SW3 8 AVDD 4 VCC RF_OUT 3 7 AVDD 10 DGND OSC_VDD 22µF C35 6 AVDD 11 SDGND 3 AGND C34 19 DVDD Y4 TXDATA 18 SDVDD 2 AGND 1 CPGND XTAL-CWX113-100MHz 1kΩ R28 RFIN AGND CPOUT MUXOUT R6 0Ω CPOUT D1 LOCK DETECT MUXOUT UG-383 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS 10572-010 Rev. 0 | Page 11 of 16 VSUPPLY Figure 11. Evaluation Board Schematic (Page 2) GND BANANA-BLACK D2 1N4001 BANANA-RED 0Ω R52 R22 DNP R21 0Ω AGND AGND1 C15 1µF DNP R54 C13 1µF +15V 5 8 R29 DNP 0Ω R25 EN VIN U8 1µF C31 7 2 4 10Ω R20 GND EP GND 3 9 6 PG ADJ N/C VOUT EN/UVLO VIN 1 GND 2 U13 5 +15V VOUT ADP150-TSOT-3.3V ADP7104ARZ 3 1 0Ω R46 R30 DNP C41 1µF 0Ω R55 C17 10µF C43 DNP R67 DNP 4.7µH L2 OSC_VDD + +5V + C6 100µF R24 0.33Ω +5V1 R47 DNP 5V_USB C32 1µF C5 1µF C8 1µF R33 DNP 0Ω R32 R36 DNP 0Ω R35 R42 DNP 0Ω R37 3 1 3 1 3 1 VOUT GND 2 U2 5 VOUT GND 2 U3 5 EN VIN GND 2 U10 VOUT 5 ADP150-TSOT-3.0V EN VIN ADP150-TSOT-1.8V EN VIN ADP150-TSOT-3.0V C33 1µF 0Ω R57 C30 1µF 0Ω R60 C28 1µF 0Ω R56 VP +1.8V +3V VP +1.8V D3 R38 1kΩ +3V Evaluation Board User Guide UG-383 10572-011 AGND 6 7 8 9 0Ω R58 DGND USB USB-MINI-B 1 VBUS 2 D– SHLD1 3 D+ SHLD2 SHLD3 4 SHLD4 IO 5 GND D4 R39 2.2kΩ 5V_USB + TRIG OUT OUT FB NC 1 2 3 4 C55 0.1µF C54 0.1µF CE TXDATA DATA CLK LE R45 100kΩ R44 100kΩ 3.3V-USB 78.7kΩ ADP3334 R41 3.3V-USB C48 22µF U5 IN IN SD GND C53 C52 1nF C49 0.1µF C44 0.1µF C45 0.1µF C46 0.1µF C58 0.1µF C59 0.1µF C60 0.1µF 10pF 3.3V-USB 140kΩ R40 PA0/INT0 PA1/INT1 PA2/*SLOE PA3/*WU2 PA4/FIFOADR0 PA5/FIFOADR1 PA6/*PKTEND PA7/*FLD/SLCS 1 2 RDY0/*SLRD RDY1/*SLWR 13 IFCLK 14 RSVD 33 34 35 36 37 38 39 40 0.1µF C61 + XTALIN XTALOUT 5 4 16 SDA SCL 15 29 CTL0/*FLAGA 30 CTL1/*FLAGB CTL2/*FLAGC 31 18 19 20 21 22 23 24 25 45 46 47 48 49 50 51 52 C51 22µF 3.3V-USB PB0/FD0 PB1/FD1 PB2/FD2 PB3/FD3 PB4/FD4 PB5/FD5 PB6/FD6 PB7/FD7 PD0/FD8 PD1/FD9 PD2/FD10 PD3/FD11 PD4/FD12 PD5/FD13 PD6/FD14 PD7/FD15 3.3V-USB 1µF C50 U6 CY7C68013-CSP CLKOUT 9 8 DD+ 54 42 RESET 44 *WAKEUP DECOUPLING FOR U7 - PLACE ONE CLOSE TO EACH VCC PIN 3.3V-USB 1µF C47 8 7 6 5 3.3V_USB 3 AVCC 5V_USB VCC VCC VCC VCC VCC VCC VCC 7 11 17 27 32 43 55 AGND 6 Rev. 0 | Page 12 of 16 GND GND GND GND GND GND GND Figure 12. Evaluation Board Schematic (Page 3) 10 12 26 28 41 53 56 C26 12pF 0.1µF C57 24.0MHz Y2 8 VCC 7 WP 6 SCL 5 SDA 10pF U7 C27 12pF R49 2.2kΩ MUXOUT 3.3V-USB C56 24LC64 1 2 A0 3 A1 4 A2 VSS 3.3V-USB 0R R43 SCREEN BOX R50 2.2kΩ 3.3V-USB UG-383 Evaluation Board User Guide 10572-012 Evaluation Board User Guide UG-383 10572-013 Figure 13. Evaluation Board Schematic (Page 4) Rev. 0 | Page 13 of 16 UG-383 Evaluation Board User Guide NOTES Rev. 0 | Page 14 of 16 Evaluation Board User Guide UG-383 NOTES Rev. 0 | Page 15 of 16 UG-383 Evaluation Board User Guide NOTES ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. 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Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed. ©2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG10572-0-8/13(0) Rev. 0 | Page 16 of 16