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Feature Highlights

1-2

Introduction

1.1

Feature Highlights

The TI TPA6011A4 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:

TPA6011A4 stereo 2-W audio power amplifier evaluation module

Internal depop circuitry to minimize transients in outputs

Dual channel, bridge-tied load (BTL) or single-ended (SE) operation

2 W per channel output power into 3

Ω

at 5 V, BTL

Low current consumption in shutdown mode (20

Internal input MUX selects among two sets of stereo inputs

DC voltage volume control from 20 dB to –40 dB, and –85 dB mute
(BTL Mode)

SE dc voltage volume control proportional to BTL gain setting

Maximum SE volume control setting via SEMAX terminal

Differential stereo inputs

A fade mode slowly ramps up or down the volume when coming out of
or going into shutdown.

Quick and easy configuration with the TI plug-n-play audio amplifier
evaluation platform

Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections

Platform provides flexible power options

Jumpers on the platform select power and module control options

Switches on the platform route signals

Platform provides quick and easy audio input and output connections

Platform power options

External 5-V – 15-V DC V

supply inputs

External regulated V

supply input

Socket for onboard 5-V/3.3-V V

voltage regulator EVM

Onboard overvoltage and reverse polarity power protection

Platform audio input and output connections

Left and right RCA phono jack inputs

Miniature stereo phone jack input

Left and right RCA phono jack outputs

Left and right compression speaker terminal outputs

Miniature stereo headphone jack output

Содержание SLOU121

Страница 1: ...February 2002 Mixed Signal Products User s Guide SLOU121...

Страница 2: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

Страница 3: ...handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s r...

Страница 4: ...here is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 60 C The EVM is design...

Страница 5: ...and Warnings This book may contain cautions and warnings This is an example of a caution statement A caution statement describes a situation that could potentially damage your software or equipment T...

Страница 6: ...te grated circuit FCC Warning This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for compliance w...

Страница 7: ...tial Input 3 8 3 2 5 Depop Circuitry 3 9 3 2 6 BTL Operation 3 9 3 2 7 Single Ended Operation 3 9 3 3 Using the TPA6011A4 EVM With the Plug N Play Evaluation Platform 3 10 3 3 1 Installing and Removin...

Страница 8: ...10 TPA6011A4 EVM Connected for Stereo BTL Output 3 17 3 11 TPA6011A4 EVM Connected for Stereo Single Ended Output 3 18 4 1 TPA06011A4 EVM Top View 4 2 4 2 TPA06011A4 EVM Bottom View 4 2 4 3 TPA06011A4...

Страница 9: ...TI TPA6011A4 audio amplifier evaluation module SLOP389 It includes a list of EVM features a brief illustrated description of the module and a list of EVM specifications Topic Page 1 1 Feature Highlig...

Страница 10: ...wly ramps up or down the volume when coming out of or going into shutdown Quick and easy configuration with the TI plug n play audio amplifier evaluation platform J Evaluation module is designed to si...

Страница 11: ...pment when used stand alone The platform has room for a single TPA6011A4 evaluation module and is a convenient vehicle for demonstrating TI s audio power amplifier and related evaluation modules The E...

Страница 12: ...1 4 Introduction...

Страница 13: ...and jumper settings shown in Table 2 1 are typical for the TPA6011A4 EVM and will cause the TPA6011A4 to switch to single ended out put mode when a plug is inserted into platform headphone jack J10 T...

Страница 14: ...or both may result Figure 2 1 Quick Start Platform Map Signal Conditioning CAUTION Do not insert or remove EVM boards with power applied ICC JP4 F1 VR1 R1 JP3 JP2 JP1 AC DC J2 VCC J1 D1 D2 D3 D4 J2 J...

Страница 15: ...ck J10 output will be used set headphone source switch S3 to U2 U4 Table 2 3 Platform Jumper and Switch Settings for the TPA6011A4 EVM JP6 JP7 JP8 S2 S3 P N P Platform Mode X Hi Note 2 U2 U4 Notes 1 X...

Страница 16: ...r J2 to ON 13 To allow the amplifier IC to switch from the LINE inputs to the HP inputs when the output switches from BTL output mode to SE output mode and vice versa set jumper J3 to ON To allow the...

Страница 17: ...ecting it into existing circuits or equipment Connections to the TPA6011A4 module header pins can be made via individual sockets wire wrapping or soldering to the pins either on the top or the bottom...

Страница 18: ...nputs 8 To allow the amplifier IC to switch from the LINE inputs to the HP inputs when the output switches from BTL output mode to SE output mode and vice versa set jumper J3 to ON To allow the inputs...

Страница 19: ...Turning R6 in the clockwise direction decreases the voltage on the SEDIFF terminal and the SE gain increases Turning R6 in the counter clockwise direction increases the SEDIFF voltage and decreases th...

Страница 20: ...2 8 Quick Start...

Страница 21: ...tart List additional application information and a parts list for the TPA6011A4 evaluation module Topic Page 3 1 Precautions 3 2 3 2 The TPA6011A4 Audio Power Amplifier Evaluation Module 3 3 3 3 Using...

Страница 22: ...or both may result Figure 3 1 The TI Plug N Play Audio Amplifier Evaluation Platform Signal Conditioning CAUTION Do not insert or remove EVM boards with power applied ICC JP4 F1 VR1 R1 JP3 JP2 JP1 AC...

Страница 23: ...ed load output modes The module can be used with the TI plug n play audio amplifier evaluation platform Figure 3 1 or wired directly into circuits or equipment The module has single in line header con...

Страница 24: ...S device intended primarily for bridge tied load BTL operation in battery powered applications It is supplied in a very small 24 pin TSSOP thermal surface mount package designed to operate from low su...

Страница 25: ...inputs share common positive inputs If using separate line and headphone inputs R IN and L IN should be ac grounded through a capacitor If using differential inputs line and headphone inputs must be t...

Страница 26: ...OLUME terminal and the value is used to determine the SE gain The SEMAX terminal controls the maximum gain for single ended mode Turn ing potentiometer R7 in the clockwise direction increases the volt...

Страница 27: ...33 0 37 40 0 44 0 48 38 0 56 0 59 36 0 67 0 70 34 0 78 0 82 32 0 89 0 93 30 1 01 1 04 28 1 12 1 16 26 1 23 1 27 24 1 35 1 38 22 1 46 1 49 20 1 57 1 60 18 1 68 1 72 16 1 79 1 83 14 1 91 1 94 12 2 02 2...

Страница 28: ...he use of a single ended or differential audio source The differential input stage of the amplifier cancels any noise that appears on both input lines of a channel To use the TPA6011A4 EVM with a diff...

Страница 29: ...s in the system The platform provides such isolated output lines from the amplifier EVM sockets directly to separate left and right speaker connectors 3 2 7 Single Ended Operation For single ended ope...

Страница 30: ...ation platform 2 Locate socket U2 on the platform 3 Orient the module correctly 4 Carefully align the pins of the module with the socket pin receptacles 5 Gently press the module into place 6 Check to...

Страница 31: ...3 3 2 1 S1 Shutdown Switch Pushbutton switch S1 on the EVM allows the manual shutdown of the TPA6011A4 amplifier IC 3 3 2 2 J1 Output Mode Jumper To keep the module amplifier IC in the single ended ou...

Страница 32: ...ogether so that both the input and output multiplexors switch simultaneously When J3 is OFF the input and output modes may be switched independently of each other 3 3 2 5 J4 Fade Mode Jumper A fade mo...

Страница 33: ...de when a plug is inserted Source select switch S3 connects the headphone jack to the output lines of either the headphone amplifier socket U5 or the power amplifier sockets U2 U4 To keep the TPA6011A...

Страница 34: ...eadphone Jack R3 240 R4 1 k R5 1 k JP8 JP6 U2 Power Amplifier Lo Hi Polarity Mode Mute VDD SPK U2 U4 3 3 4 2 Mute Mode Select JP6 A 3 pin jumper header JP6 on the platform functioning as an SPDT switc...

Страница 35: ...upply VDD voltage to the platform and the TPA6011A4 evaluation module installed on it Although the TPA6011A4 amplifier IC draws approximately 0 65 A from the power supply during continuous full power...

Страница 36: ...RCA phono jacks J7 and J9 left and right pairs of compression connectors for stripped speaker wires J8 and optionally through a miniature 1 8 inch stereo phone jack J10 for headphones The audio outpu...

Страница 37: ...operation requirement exists Note that the shutdown signal applied to the EVM SHUTDOWN pin must be able to supply enough current to overcome the pullup resistor on the module 100 k 3 4 1 TPA6011A4 EVM...

Страница 38: ...ded Output Figure 3 11 TPA6011A4 EVM Connected for Stereo Single Ended Output Audio Input Right Audio Input Left 5 V 33 F 1000 F 33 F 1000 F Table 3 4 Typical TPA6011A4 EVM Jumper Settings for Single...

Страница 39: ...nce Reference The TPA6011A4 EVM board layers board schematic and parts list are pres ented in this chapter Topic Page 4 1 TPA6011A4 EVM Layers and Board Schematic 4 2 4 2 TPA6011A4 EVM Parts List 4 4...

Страница 40: ...TPA6011A4 EVM Layers and Board Schematic 4 2 Reference 4 1 TPA6011A4 EVM Layers and Board Schematic Figure 4 1 TPA06011A4 EVM Top View Figure 4 2 TPA06011A4 EVM Bottom View...

Страница 41: ...F SEMAX AGND BYPASS FADE SHUTDOWN LOUT PGND 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VDD J1 R1 100 k VDD J2 R2 100 k VDD VDD VDD C8 0 47 F VDD R3 100 k J4 S1 VDD C10 0 47 F C11 10...

Страница 42: ...ND R1 R2 R3 R4 Resistor 100 k 1 10 W 5 SMD 0805 4 Panasonic ERJ 6GEYJ104V Digi Key P100KATR ND R5 R6 R7 Potentiometer 50 k Cermet ST SL through hole 3 Bourns 3362P 1 503 Digi Key 3362P 503 ND S1 Swit...

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