Texas Instruments eZAudio TPA2015D1 User Manual Download Page 24

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Summary of Contents for eZAudio TPA2015D1

Page 1: ...e 3 2 2 Running the Demonstration 4 3 Hardware Description 7 3 1 TPA2015D1 Features 7 4 Schematics PCB and Bill of Materials 9 4 1 Schematics 9 4 2 Printed Circuit Board 12 4 3 Bill of Materials 17 Ap...

Page 2: ...designed for evaluation the kit does contain a mini PCB that can be used for evaluation purposes NOTE This document presents evaluation module EVM specifications audio performance measurements graphs...

Page 3: ...from an external 5 V supply with a 600 mA rating 2 Quick Start Guide 2 1 Powering the Device 1 Speaker Plug the speaker into the white jack on the left side of the board 2 Audio Cable Plug 3 5 mm audi...

Page 4: ...r left corner to the right To turn off hold the Play button for 3 seconds 2 2 Running the Demonstration The device defaults to the following settings when booting up Gain 20 dB AGC 3 97 V VDD 3 60 V B...

Page 5: ...Notice that the current draw 250 mA and power output 0 45 W decrease Explanation This demonstrates the battery tracking feature of the TPA2015D1 When the battery voltage reaches the AGC threshold the...

Page 6: ...he battery voltage The current increases in order to maintain power output The audio also sounds distorted without AGC enabled 8 Joystick Move the joystick up until AGC is enabled by choosing one of t...

Page 7: ...s distorted because the signal is clipped at the battery voltage rails When boost is enabled the increased headroom for the output swing significantly reduces clipping 3 Hardware Description 3 1 TPA20...

Page 8: ...ery voltage 3 V Battery tracking SpeakerGuard Protects speakers by preventing clipping High efficiency 81 at 1 W and 3 6 V Eliminates GSM TDMA frame rate noise Very high PSRR 90 dB 27 Better efficienc...

Page 9: ...0 90 9Kohms 392Kohms GND R12 499Kohms AGC and Gain control Input Section Vrms Capture Voltage divider to accomodate VFS of A D converter eZ Audio TPA2015D1 Demo Kit www ti com Schematics PCB and Bill...

Page 10: ...USB NC NC Case Case Case Case Data GND ID_NC 5v Data GND 1 2 BP1 L4 2 1 R26 470mohms 1 8V to 4 8V Adjustable Output 1A Step Down Converter EVM Supply Generation 100 Kohm Digital Pot IBAT Meter Shunt...

Page 11: ...OY STICK GND GND GND R43 5 1Kohms www ti com Schematics PCB and Bill of Materials Figure 3 MSP430 Schematic Figure 4 Display and Joystick Schematics 11 SLOU312 June 2011 eZAudio TPA2015D1 Demonstratio...

Page 12: ...and Bill of Materials www ti com 4 2 Printed Circuit Board Figure 5 Top Assembly 12 eZAudio TPA2015D1 Demonstration Kit SLOU312 June 2011 Submit Documentation Feedback Copyright 2011 Texas Instrument...

Page 13: ...w ti com Schematics PCB and Bill of Materials Figure 6 Bottom Copper 13 SLOU312 June 2011 eZAudio TPA2015D1 Demonstration Kit Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporate...

Page 14: ...Schematics PCB and Bill of Materials www ti com Figure 7 Top Copper 14 eZAudio TPA2015D1 Demonstration Kit SLOU312 June 2011 Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporated...

Page 15: ...w ti com Schematics PCB and Bill of Materials Figure 8 Copper Layer 2 15 SLOU312 June 2011 eZAudio TPA2015D1 Demonstration Kit Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporat...

Page 16: ...hematics PCB and Bill of Materials www ti com Figure 9 Copper Layer 3 16 eZAudio TPA2015D1 Demonstration Kit SLOU312 June 2011 Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporat...

Page 17: ...R20 R21 RESISTOR SMT 0603 1 1 10W 1 00K VISHAY CRCW06031003F 4 R5 R6 R40 R41 RESISTOR SMT 0603 1 1 10W 100K VISHAY 0603YC104JAT2A 4 C4 C12 C16 C26 CAPACITOR SMT 0603 CERAMIC 0 1uF 16V 5 X7R AVX 2163...

Page 18: ...22JAT2A 1 C31 CAPACITOR SMT 0603 CERAMIC 0 0022uF 50V 5 X7R AVX ECS T1CY105R 1 C35 CAP TAN SMT 1 0uF 16V 20 DF 0 04 PANASONIC EVQ PPBA25 1 S1 SWITCH SMT 2P SPST NO 2 5mm HEIGHT DUST PROOF PANASONIC LT...

Page 19: ...Gain0 Gain1 TPA2015D1 Gain0 Gain1 Gain Gain Pin L L Float 15 5 dB H L Vdd 2 15 5 dB L H Vdd 20 dB H H GND 6 dB L 0 V and H 3 3 V Gain0 and Gain1 change the gain settings for the TPA2015D1 They control...

Page 20: ...al potentiometers have been set to default conditions and Default VDD voltage has been measured by Stellaris MCU VDD default is 3 6 V REG_EN This control signal enables U6 the adjustable VDD regulator...

Page 21: ...age range 1 8 V to 4 8 V For the full voltage range use USB power option batteries give only up to 4 5 V For more information on the digital potentiometer see the TPL0102 data sheet SLIS134 Table 2 Co...

Page 22: ...VM Power up Sequence 1 ENB Low 2 END Low 3 REG_EN Low 4 Gain0 Low 5 Gain1 Low 6 AGC0 Low 7 AGC1 Low 8 Set Digital pot wiper resistance to position 41 write 0x29 to register 0x00 and wait 50 ms 9 REG_E...

Page 23: ...uct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer...

Page 24: ...orized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parti...

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