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Texas Instruments TRF3703, User Manual, Page: 3 / 22

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Contents

1

Overview

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5

1.1

Purpose

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5

1.2

EVM Circuit Overview

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5

1.3

Power Requirements

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5

1.4

TRF3703 EVM Operating Procedure

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6

2

Physical Description

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11

2.1

PCB Layout

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11

2.2

Parts List

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18

3

Circuit Description

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18

3.1

Circuit Function

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18

4

Circuit Board

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19

5

Schematic

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20

Important Notices

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21

SLWU042B – October 2006 – Revised August 2008

Table of Contents

3

Submit Documentation Feedback

Summary of Contents for TRF3703

Page 1: ...TRF3703 Quadrature Modulator Evaluation Module User s Guide Literature Number SLWU042B October 2006 Revised August 2008...

Page 2: ...2 SLWU042B October 2006 Revised August 2008 Submit Documentation Feedback...

Page 3: ...TRF3703 EVM Operating Procedure 6 2 Physical Description 11 2 1 PCB Layout 11 2 2 Parts List 18 3 Circuit Description 18 3 1 Circuit Function 18 4 Circuit Board 19 5 Schematic 20 Important Notices 21...

Page 4: ...work for 19 2 mA Full Scale 10 6 Top Layer 11 7 Top Layer NH 12 8 Ground Plane L2 13 9 Ground Plane L3 14 10 Layer 4 Bottom Layer 15 11 Layer 4 Bottom Layer NH 16 12 Drill Pattern 17 13 Silkscreen Top...

Page 5: ...manual applies to both the TRF3703 33 and TRF3703 15 devices The EVM comes configured for differential I Q input signals via four SMA connectors as shown in the schematic Figure 14 and in Table 1 For...

Page 6: ...nerator to suppress the sideband Adjust the I Q amplitude and phase of the CW signal coming from the arbitrary waveform generator 6 Connect a spectrum analyzer to the SMA connector marked RFOUT J7 and...

Page 7: ...nals which are controlled with the gain settings of the DAC This is an iterative procedure that results in optimized suppression levels that exceeds 60 dBc The level of suppression observed depends on...

Page 8: ...offsets in mV steps until you obtain the minimum carrier feedthrough A typical carrier feedthrough value exceeds 50 dBm See Figure 2 1 Provide a GSM edge signal of the desired frequency into the diff...

Page 9: ...he TRF3703 15 is well suited to work with TI s DAC56X2 series Each DAC series is optimized to work at certain common mode voltage The DAC568X has a common mode of 3 3 V while the DAC56X2 has a 0 7 V c...

Page 10: ...erface calculator is available SLWC083 Figure 4 1 5 V Interface Network for 19 2 mA Full Scale LOSS 1 dB 2 dB 3 dB 4 dB 5 dB Pullup R1 115 115 115 115 115 Pulldown R3 634 634 634 634 634 Series R5 11...

Page 11: ...and list of components used on the evaluation module The EVM is constructed on a four layer 38 1 mm 38 1 mm 1 579 mm thick PCB using FR 4 material Figure 6 through Figure 12 show the individual layer...

Page 12: ...K002 Physical Description www ti com Figure 7 Top Layer NH 12 TRF3703 Quadrature Modulator Evaluation Module SLWU042B October 2006 Revised August 2008 Submit Documentation Feedback...

Page 13: ...K003 www ti com Physical Description Figure 8 Ground Plane L2 SLWU042B October 2006 Revised August 2008 TRF3703 Quadrature Modulator Evaluation Module 13 Submit Documentation Feedback...

Page 14: ...K004 Physical Description www ti com Figure 9 Ground Plane L3 14 TRF3703 Quadrature Modulator Evaluation Module SLWU042B October 2006 Revised August 2008 Submit Documentation Feedback...

Page 15: ...K005 www ti com Physical Description Figure 10 Layer 4 Bottom Layer SLWU042B October 2006 Revised August 2008 TRF3703 Quadrature Modulator Evaluation Module 15 Submit Documentation Feedback...

Page 16: ...K006 Physical Description www ti com Figure 11 Layer 4 Bottom Layer NH 16 TRF3703 Quadrature Modulator Evaluation Module SLWU042B October 2006 Revised August 2008 Submit Documentation Feedback...

Page 17: ...Total 0 254 mm 0 3048 mm 0 3302 mm 0 9398 mm PTH PTH PTH PTH D001 www ti com Physical Description Figure 12 Drill Pattern SLWU042B October 2006 Revised August 2008 TRF3703 Quadrature Modulator Evaluat...

Page 18: ...HEADER 2POS_JUMP 2 HTSW 150 07 L S SAMTEC N A W1 W2 This chapter discusses the various functions of the EVM Headers W1 and W2 supply 5 V VCC dc power to the modulator Header W1 supplies 5 V to the LO...

Page 19: ...GND GND 50 W RF_OUT K001 www ti com Circuit Board This chapter shows the circuit board test points Figure 13 Silkscreen Top Layer SLWU042B October 2006 Revised August 2008 TRF3703 Quadrature Modulator...

Page 20: ...MA_END IP C5 1000 pF 1 2 3 4 5 J7 SMA_END C3 100 pF C4 1000 pF 1 2 3 4 5 J5 SMA_END QN 1 2 3 4 5 J6 SMA_END QP RF_OUT W1 2POS_JUMPER W2 2POS_JUMPER C8 C9 R1 0 C6 C7 4 7uF R4 0 R5 0 R2 0 R3 0 S0214 01...

Page 21: ...mperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any paten...

Page 22: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product wo...

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