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TRF3722 is a high performance direct conversion quadrature modulator with exceptional linearity and low
noise performance. The TRF3722 converts low frequency baseband signals to high frequency RF signals
and integrates PLL and VCO to provide the local oscillator (LO) to the integrated modulator. This
document provides the operating procedures of the TRF3722 evaluation module (EVM).
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SLOU385 - May 2014
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Copyright © 2014, Texas Instruments Incorporated
TRF3722 EVM User's Guide
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User's Guide
SLOU385 - May 2014
TRF3722 EVM User's Guide
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Table of Contents
Related Manuals for Texas Instruments TRF3722 EVM
Summary of Contents for Texas Instruments TRF3722 EVM
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Page 1: Table Of Contents
Fractional Mode Loop Filter (a) ................... Fractional Mode Loop Filter (b) ................. Fractional Phase Noise at 3532.9 MHz List of Tables ....................Default Jumper Connections SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 2: Introduction
1. This is a one-time installation. Download the TRF3722 GUI (SLOC306) from the TI website. 2. Run SETUP from the TRF3722GUI_Installer/Volume folder. 3. The window in Figure 2 appears. TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 3: Gui Installer Initialization
Figure 3. Directory Installation Windows 5. Once the installation is complete, select Finish 6. Go to Start → All Programs → TRF3722_PG1p0_Project to launch the TRF3722 GUI. SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 4: Gui Details
5-V LDO (U6) load Pins 1-2 External supply 5 V from LDO (U6) Pins 1-2 LDO supply 3.3 V from LDO (U5) Pins 1-2 LDO supply TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 5: Board Power-Up
55 mA (±15 mA) and typical consumption from a 5-V DC supply is around 20 mA (±7 mA). Figure 5 shows the voltage supply inputs. Figure 5. Voltage Supply Inputs SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 6: Modulator Linearity Validation
7. As an example, this guide now considers an RF target frequency of 1986.56 MHz. 8. Set the GUI as shown in Figure 6 Figure Figure 6. GUI Settings (a) TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 7: Gui Settings (B)
12. Use a DAC or an arbitrary waveform generator to generate two-tone I/Q baseband input signals. For example, consider 4.5 MHz and 5.5 MHz. SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 8: Trf3722 Oip3
14. Measure the TRF3722 output OIP3. The OIP3 at LO 1986.56 MHz should be around 28.5 ±2 dBm, as shown in Figure Figure 9. TRF3722 OIP3 TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 9: Ext_Vco Modulator Linearity Validation
Common Mode I/Q Offset → 250 → mV. Use a DC voltage meter to monitor the DC common voltage at the inputs of I and Q and fine-tune the common mode voltage setting until it measures 250 mV. SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 10: Trf3722 Gui, Ext Vco Configuration (A)
5. Measure the TRF3722 output OIP3. The OIP3 at LO 1986.56 MHz should be around 28.5 dBm as shown in Figure 10 Figure Figure 10. TRF3722 GUI, Ext VCO Configuration (a) Figure 11. TRF3722 GUI, Ext VCO Configuration (b) TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 11: Phase Noise Validation - Integer Mode
Phase Noise Validation - Integer Mode Validate integer mode phase noise using the following steps: 1. The default loop filter populated on the TRF3722 EVM is an integer mode loop filter. 2. A 40-kHz bandwidth and 2.56-MHz Fpfd loop filter has been designed using the loop filter calculator tool, available from www.ti.com. -
Page 12: Integer Mode Loop Filter (A)
5. Set the GUI as shown in Figure 13 Figure Figure 13. Integer Mode Loop Filter (a) Figure 14. Integer Mode Loop Filter (b) TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 13: Integer Mode Phase Noise At 1800 Mhz
8. Obtain best close-in noise (below 500-Hz offset) by using a low phase noise reference signal at the J11 EXT_REF_IN SMA connector. When operating the board using an external reference, make sure to DNI R23, remove JP4, and populate R25. SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 14: Phase Noise Validation - Fractional Mode
Validate fractional mode phase noise using the following steps: 1. The default loop filter connected on the TRF3722 EVM is an integer mode loop filter. Change integer loop filter to fractional loop filter DNI R11 and DNI R40, and populate R8 and R10. -
Page 15: Fractional Mode Loop Filter (A)
6. Set the GUI as shown in Figure 17 Figure Figure 17. Fractional Mode Loop Filter (a) Figure 18. Fractional Mode Loop Filter (b) SLOU385 – May 2014 TRF3722 EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... -
Page 16: Fractional Phase Noise At 3532.9 Mhz
TP4 5-V DC supply. 9. To obtain best close-in noise (below 500-Hz offset), use a low phase noise reference signal at J11 EXT_REF_IN SMA connector. TRF3722 EVM User's Guide SLOU385 – May 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated... - Page 17 ADDITIONAL TERMS AND CONDITIONS, WARNINGS, RESTRICTIONS, AND DISCLAIMERS FOR EVALUATION MODULES Texas Instruments Incorporated (TI) markets, sells, and loans all evaluation boards, kits, and/or modules (EVMs) pursuant to, and user expressly acknowledges, represents, and agrees, and takes sole responsibility and risk with respect to, the following: 1.
- Page 18 RADIO FREQUENCY REGULATORY COMPLIANCE INFORMATION FOR EVALUATION MODULES Texas Instruments Incorporated (TI) evaluation boards, kits, and/or modules (EVMs) and/or accompanying hardware that is marketed, sold, or loaned to users may or may not be subject to radio frequency regulations in specific countries.
- Page 19 Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2014, Texas Instruments Incorporated spacer Important Notice for Users of EVMs Considered “Radio Frequency Products”...
- Page 20 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
- Page 21 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TRF3722EVM...
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