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User's Guide
SLWU076A – November 2011 – Revised July 2012
TRF3765 Integer/Fractional-N PLL With Integrated VCO
Evaluation Module
This document describes usage and features of the TRF3765 evaluation module (EVM) for wideband
frequency synthesis applications. The synthesizer uses an integer/fractional-N PLL with integrated VCOs
to generate local oscillator signals from 300 MHz to 4800 MHz. This document describes rapid-start setup
procedures, detailed descriptions of circuit blocks and available options, schematics and printed-circuit
board layout, and a common start-up problem troubleshooting guide.
Contents
1 Quick-Start Operating Procedures
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2
2 Circuit Block Descriptions
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2
2.1 Test Points
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2
2.2 Power Supply
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3
2.3 Loop Filter
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3
2.4 SPI Communication
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4
2.5 Reference Clock
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4
3 Configuration Options
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4
4 Physical Description
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5
4.1 Schematic
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5
4.2 Layout
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8
4.3 Bill of Materials
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12
5 Troubleshooting FAQs
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15
List of Figures
1 Loop Filter Reference Designators
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4
2 TRF3765EVM Schematic, Page 1 of 3
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3 TRF3765EVM Schematic, Page 2 of 3
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4 TRF3765EVM Schematic, Page 3 of 3
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5 Silkscreen, Top
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6 Top Layer and Drill Map
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7 Layer 2, Ground
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8 Layer 3, Power
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9 Bottom Layer and Silkscreen
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10 Fabrication Drawing
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List of Tables
1 Test Point Color Codes
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2
2 Integer and Fractional Mode Configurations
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5
3 Fractional Board Bill of Materials
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4 Integer Board Bill of Materials, Differences from Fractional Board
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14
5 Troubleshooting Sequences
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15
1 SLWU076A – November 2011 – Revised July 2012 TRF3765 Integer/Fractional-N PLL With Integrated VCO Evaluation Module
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