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 TPA112 150-mW Stereo Audi...
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 TPA112 MSOP Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 ) TPA112 MSOP audio amplifier evaluation module (SLOP126). 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 9 - Description; Figure 1–1. The TI TPA112 Audio Amplifier Evaluation Module; TPA112 MSOP EVM Specifications; Supply voltage range, V; Audio input voltage, V; Minimum load impedance, R
Description 1-3 Introduction 1.2 Description The TPA112 MSOP audio power amplifier evaluation module is a complete,low-power stereo audio power amplifier for high-fidelity line-level output,headphone, and small speaker applications. It consists of the TI TPA112150-mW stereo audio power amplifier IC ...
Page 11 - Quick Start; Chapter 2
2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TPA112 MSOPaudio amplifier EVM for use. Using the TPA112 MSOP EVM with the TIplug-n-play audio amplifier evaluation platform is a quick and easy way toconnect power, signal and control inputs, and signal out...
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; Power supply; Inputs and outputs
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TPA112 MSOP 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 Follow these steps to use the TPA112 MSOP EVM stand-alone or to connectit into existing circuits or equipment. Connections to the TPA112 MSOPmodule 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 TPA112 IC, the evaluation module, thesteps in the Quick-Start List, additional application information, and a parts listfor the TPA112 MSOP 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 TPA112 MSOP Audio Power Amplifier Evaluation Module; Figure 3–3. TPA112 MSOP EVM Schematic Diagram
The TPA112 MSOP Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TPA112 MSOP Audio Power Amplifier Evaluation Module The TPA112 MSOP audio power amplifier evaluation module is powered bya TPA112 150-mW stereo audio amplifier IC. It can drive either line-leveloutputs, 32- Ω headphones, or ...
Page 18 - TPA112 Audio Amplifier IC; As a headphone driver, distortion levels are below 1% into 32-
The TPA112 MSOP Audio Power Amplifier Evaluation Module 3-4 Details 3.2.1 TPA112 Audio Amplifier IC The TPA112 audio amplifier IC is a CMOS device intended primarily forhigh-performance line-level output, headphone driver, and small speakerapplications. It is supplied in both a SOIC and a very small...
Page 19 - Module Gain; Gain
The TPA112 MSOP Audio Power Amplifier Evaluation Module 3-5 Details 3.2.2 Module Gain The TPA112 MSOP evaluation module has a set gain of 4 (inverting) for eachchannel. However, the gain can be adjusted to a maximum of approximately10 (inverting) by changing the value of feedback resistors (R8 and R...
Page 20 - Using The TPA112 MSOP EVM With the Plug-N-Play Evaluation Platform; Installing and Removing EVM Boards; EVM Insertion
Using The TPA112 MSOP EVM With the Plug-N-Play Evaluation Platform 3-6 Details 3.3 Using The TPA112 MSOP EVM With the Plug-N-Play Evaluation Platform The TPA112 MSOP audio amplifier evaluation module is designed for use withthe TI plug-n-play audio amplifier evaluation platform. It simply plugs into...
Page 21 - Signal Routing; Figure 3–5. Platform Signal Routing and Outputs; Switch S2 selects or bypasses signal conditioning.; Headphone Output Jack
Using The TPA112 MSOP 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 TPA112 MSOP Headphon...
Page 22 - Power Requirements
Using The TPA112 MSOP EVM With the Plug-N-Play Evaluation Platform 3-8 Details 3.3.3 Power Requirements The TPA112 MSOP audio power amplifier evaluation module can operate froma V DD voltage between approximately 2.5 V and 5.5 V. The TI plug-n-play audio amplifier evaluation platform with a voltage ...
Page 23 - Inputs and Outputs; Inputs; Figure 3–6. Typical Headphone Plug
Using The TPA112 MSOP EVM With the Plug-N-Play Evaluation Platform 3-9 Details 3.3.4 Inputs and Outputs The TI plug-n-play audio amplifier evaluation platform is equipped with severalstandard conectors for audio inputs and outputs. 3.3.4.1 Inputs In most cases, audio signals enter the platform throu...
Page 24 - Using The TPA112 MSOP EVM Stand-Alone; TPA112 MSOP EVM Connected as a Stereo Headphone Amplifier
Using The TPA112 MSOP EVM Stand-Alone 3-10 Details 3.4 Using The TPA112 MSOP EVM Stand-Alone Using the TPA112 MSOP audio power amplifier evaluation modulestand-alone is much the same as using it with the platform. The same 2.5-Vto 5.5-V power supply requirement exists. 3.4.1 TPA112 MSOP EVM Connecte...
Page 25 - TPA112 MSOP Audio Power Amplifier Evaluation Module Parts List; Table 3–1. TPA112 MSOP EVM Parts List
TPA112 MSOP Audio Power Amplifier Evaluation Module Parts List 3-11 Details 3.5 TPA112 MSOP Audio Power Amplifier Evaluation Module Parts List Table 3–1. TPA112 MSOP EVM Parts List Ref. Description Size EVM Qty. Manufacturer/ Part Number Vendor/Number C3, C6 Capacitor, 1 µ F, +80%/ –20%, nonpolarize...
