Texas Instruments AN-1922 LM48511 User Manual Download Page 13 | Manualshive

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Texas Instruments AN-1922 LM48511 User Manual Download Page 13

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Demonstration Board PCB Layout

Figure 7. Bottom Layer

Figure 8. Bottom Overlay

13

SNAA064C – November 2008 – Revised May 2013

AN-1922 LM48511 Evaluation Board

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Copyright © 2008–2013, Texas Instruments Incorporated

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Summary of Contents for AN-1922 LM48511

Page 1: ...1SQ Demonstration Board 2 Quick Start Guide Step 1 Apply a 3 0V to 5 5V power supply voltage to the VDD pin with respect to the ground GND pin Step 2 Set connectors SD_Amp SS_En Enable SD_Boost to Hig...

Page 2: ...rtable devices such as GPS mobile phones and MP3 players The high 80 efficiency at 5V extends battery life when compared to boosted Class AB amplifiers Independent regulator and amplifier shutdown con...

Page 3: ...cuit 7 Connections Table 1 LM48511 Demonstration Board Connections Designator Function or Use Supply Voltage VDD The supply voltage operating range is from 3 0V to 5 5V but the absolute maximum rating...

Page 4: ...e 1 LM48511 Demonstration Board Connections continued Designator Function or Use Set the FB_SEL High for PV1 VFB 1 25 5k 4 87k where VFB 1 23V FB_SEL Set the FB_SEL Low for PV1 VFB 1 25 5k 9 31k where...

Page 5: ...NCY www ti com Typical Performance Characteristics THD N vs Output Power THD N vs Output Power VDD 3 6V RL 8 VDD 3V RL 8 f 1kHz filter 22kHz PV1 7V f 1kHz filter 22kHz PV1 4 8V THD N vs Output Power T...

Page 6: ...0 0 0 OUTPUT POWER W EFFICIENCY 0 5 1 0 1 5 2 0 2 5 80 10 Typical Performance Characteristics www ti com Boost Amplifier vs Output Power Boost Amplifier vs Output Power VDD 5V RL 8 VDD 3 6V RL 8 f 1k...

Page 7: ...PECTRUM FIXED FREQUENCY 0 20 40 60 80 100 20 200 2k 20k PSRR dB FREQUENCY Hz FIXED FREQUENCY SPREAD SPECTRUM www ti com Typical Performance Characteristics PSRR vs Frequency PSRR vs Frequency VDD 3 6V...

Page 8: ...SSIPATION W 0 4 0 OUTPUT POWER W 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 5 1 0 1 5 2 0 2 5 3 0 3 5 1 8 0 Typical Performance Characteristics www ti com Power Dissipation vs Output Power Supply Current vs Su...

Page 9: ...LOAD CURRENT A EFFICIENCY 0 1 0 2 0 3 0 4 0 5 80 10 www ti com Typical Performance Characteristics Boost Converter Efficiency Boost Converter Efficiency vs vs ILOAD DC ILOAD DC VDD 5V PV1 7 8V VDD 3...

Page 10: ...e distance priority to the quiet ground 10 Bill Of Materials Designator Description Footprint Qty Value Cf1 CHIP CAPACITOR GENERIC CAP 0805 1 470pF CINA CHIP CAPACITOR GENERIC CAP 1210 1 1 F CINB CHIP...

Page 11: ...ion Board PCB Layout Figure 3 Top Silkscreen Figure 4 Top Layer 11 SNAA064C November 2008 Revised May 2013 AN 1922 LM48511 Evaluation Board Submit Documentation Feedback Copyright 2008 2013 Texas Inst...

Page 12: ...PCB Layout www ti com Figure 5 Mid Layer 1 Figure 6 Mid Layer 2 12 AN 1922 LM48511 Evaluation Board SNAA064C November 2008 Revised May 2013 Submit Documentation Feedback Copyright 2008 2013 Texas Inst...

Page 13: ...on Board PCB Layout Figure 7 Bottom Layer Figure 8 Bottom Overlay 13 SNAA064C November 2008 Revised May 2013 AN 1922 LM48511 Evaluation Board Submit Documentation Feedback Copyright 2008 2013 Texas In...

Page 14: ...the title of Table 1 from LME49600 to LM48511 Edited Table 1 Demonstration Board Connections Edited Figure 2 Typical LM48511 Audio 1 02 10 18 12 Amplifier Circuit 14 AN 1922 LM48511 Evaluation Board S...

Page 15: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

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