Page 3 - Preface; Related Documentation From Texas Instruments; TI is a trademark of Texas Instruments Incorporated.
iii Chapter Title—Attribute Reference Preface Related Documentation From Texas Instruments J TI Plug-N-Play Audio Amplifier Evaluation Platform (literaturenumber SLOU011) provides detailed information on the evaluationplatform and its use with TI audio evaluation modules. J TPA301 350-mW Low-Voltage...
Page 5 - Contents; Introduction
Running Title—Attribute Reference v Chapter Title—Attribute Reference Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 . . . . . . . . . . . . . . . . . . ....
Page 6 - Figures
Running Title—Attribute Reference vi Figures 1–1 The TI TPA301 Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 7 - This chapter provides an overview of the Texas Instruments (TI; Topic; Chapter 1
1-1 Introduction Introduction This chapter provides an overview of the Texas Instruments (TI ) TPA301 audio amplifier evaluation module (SLOP115). It includes a list of EVMfeatures, a brief description of the module illustrated with a pictorial diagram,and a list of EVM specifications. Topic Page ...
Page 8 - Feature Highlights
Feature Highlights 1-2 Introduction 1.1 Feature Highlights The TI TPA301 audio amplifier evaluation module and the TI plug-n-play audioamplifier evaluation platform include the following features: - TPA301 Low-Voltage Audio Power Amplifier Evaluation Module J Single channel, bridge-tied load (BTL) o...
Page 9 - Description; Figure 1–1. The TI TPA301 Audio Amplifier Evaluation Module; TPA301 EVM Specifications; Supply voltage range, V; Audio input voltage, V
Description 1-3 Introduction 1.2 Description The TPA301 audio power amplifier evaluation module is a complete, low-pow-er single-channel audio power amplifier. It consists of the TI TPA301 350-mWlow-voltage audio power amplifier IC along with a small number of other partsmounted on a circuit board t...
Page 11 - Quick Start; Chapter 2
2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TPA301 audioamplifier EVM for use. While using the TPA301 with the TI plug-n-play audioamplifier evaluation platform is a quick and easy way to connect power, signaland control inputs, and signal outputs to ...
Page 12 - Power Supply Input Polarity and Maximum Voltage; power; Quick Start Platform Map
Precautions 2-2 Quick Start 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external powerconnected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polaritypower applied ...
Page 13 - Quick Start List for Platform; Platform preparations; Table 2–2. Platform Jumper and Switch Settings for the TPA301; Power supply; Inputs and outputs
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Use the following steps when using the TPA301 EVM with the TI plug-n-playaudio amplifier evaluation platform (see the platform user’s guide, SLOU011,for additional details). Numbered callouts for selected steps are shown...
Page 14 - Quick Start List for Stand-Alone
Quick Start List for Stand-Alone 2-4 Quick Start 2.3 Quick Start List for Stand-Alone Use the following steps to use the TPA301 EVM stand-alone or whenconnecting it into existing circuits or equipment. Connections to the TPA301module header pins can be made via individual sockets, wire-wrapping, ors...
Page 15 - Details; Chapter 3
3-1 Details Details This chapter provides details on the TPA301 IC, the evaluation module, andthe steps in the Quick-Start List, additional application information, and a partslist for the TPA301 evaluation module. Topic Page 3.1 Precautions 3–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 16 - Figure 3–1. The TI Plug-N-Play Audio Amplifier Evaluation Platform
Precautions 3-2 Details 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external powerconnected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polaritypower applied to t...
Page 17 - The TPA301 Audio Power Amplifier Evaluation Module; Figure 3–3. TPA301 EVM Schematic Diagram
The TPA301 Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TPA301 Audio Power Amplifier Evaluation Module The TPA301 audio power amplifier evaluation module is powered by a TPA301350-mW low-power audio amplifier IC and includes onboard gain adjustment,a shutdown control signal input with...
Page 18 - TPA301 Audio Amplifier IC; BTL Operation; F electrolytic coupling
The TPA301 Audio Power Amplifier Evaluation Module 3-4 Details 3.2.1 TPA301 Audio Amplifier IC The TPA301 audio amplifier IC is a CMOS device intended primarily for bridge-tied load (BTL) operation in battery-powered applications. It is supplied in avery small surface-mount package and has been desi...
Page 19 - Module Gain
The TPA301 Audio Power Amplifier Evaluation Module 3-5 Details In the single-ended mode, the amplifier inside the TPA301 IC that drives theOUT– line still operates and dissipates power even though it is not being usedto help drive the load. A better choice for low-power applications that operatein t...
Page 20 - Using The TPA301 EVM With the Plug-N-Play Evaluation Platform; Installing and Removing EVM Boards; EVM Insertion
Using The TPA301 EVM With the Plug-N-Play Evaluation Platform 3-6 Details 3.3 Using The TPA301 EVM With the Plug-N-Play Evaluation Platform The TPA301 audio amplifier evaluation module was designed to be used withthe TI plug-n-play audio amplifier evaluation platform. It simply plugs intosocket U3 o...
Page 21 - Signal Routing; Figure 3–5. Platform Signal Routing and Outputs; Switch S2 selects signal conditioning or bypasses it; Headphone Output Jack
Using The TPA301 EVM With the Plug-N-Play Evaluation Platform 3-7 Details 3.3.2 Signal Routing Signal flow on the platform is controlled by two signal routing switches, asshown in Figure 3 – 5. Figure 3–5. Platform Signal Routing and Outputs U1 Signal Conditioning On Off U5 Stereo Headphone Amplifie...
Page 22 - Muting; , the TPA301 amplifier IC on the module shuts down and; resistor; Figure 3–6. Mute/Mode and Polarity Control
Using The TPA301 EVM With the Plug-N-Play Evaluation Platform 3-8 Details 3.3.3 Muting The TPA301 EVM is equipped with a mute (shutdown) control input pin. Whenthis input is tied to V DD , the TPA301 amplifier IC on the module shuts down and assumes an ultra-low power mode. When the control input is...
Page 23 - Power Requirements
Power Requirements 3-9 Details 3.3.4 Power Requirements The TPA301 audio evaluation module can operate from any voltage betweenapproximately 2.5 V and 5.5 V, however, the TPA301 amplifier IC on themodule is characterized for operation at 3.3 V and 5 V. For best performance(highest output power with ...
Page 24 - Inputs and Outputs; Inputs; Figure 3–7. Typical Headphone Plug
Inputs and Outputs 3-10 Details 3.3.5 Inputs and Outputs The TI plug-n-play audio amplifier evaluation platform is equipped with severalstandard conectors for audio inputs and outputs. 3.3.5.1 Inputs In most cases, audio signals enter the platform through either a pair of RCAphono jacks (J3 and J5) ...
Page 25 - Using The TPA301 EVM Stand-Alone; TPA301 EVM Connected for BTL Output; Figure 3–8. TPA301 EVM Connected for Stereo BTL Output
Using The TPA301 EVM Stand-Alone 3-11 Details 3.4 Using The TPA301 EVM Stand-Alone Using the TPA301 audio power amplifier evaluation module stand-alone ismuch the same as using it with the platform. The same 2.5-V to 5.5-V powersupply range and the isolated OUT+ and OUT– lines for BTL operation re-q...
Page 26 - TPA301 EVM Connected for Single-Ended Output; Figure 3–9. TPA301 EVM Connected for Stereo Single-Ended Output
Using The TPA301 EVM Stand-Alone 3-12 Details 3.4.2 TPA301 EVM Connected for Single-Ended Output Figure 3–9. TPA301 EVM Connected for Stereo Single-Ended Output 5 VDC Audio Input (Right) 5 VDC Audio Input (Left) External Mute Control (active high) GND C4 R3 IN+ C2 Shutdown R1 R2 C1 C6 C3 C5 R5 DL OU...
Page 27 - TPA301 Audio Power Amplifier Evaluation Module Parts List
TPA301 Audio Power Amplifier Evaluation Module Parts List 3-13 Details 3.5 TPA301 Audio Power Amplifier Evaluation Module Parts List Table 3–1. TPA301 EVM Parts List Ref. Description Size EVM Qty. Manufacturer/ Part Number Vendor Number R4 Trim Pot, 200 k Ω Cermet ST SL, (through hole) 1 Bourns3323P...
