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 TPA122 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 TPA122 MSOP Audio Amplifier Evaluation Module 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . 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 ) TPA122 MSOP Audio Amplifier Evaluation Module (SLOP125). 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 TPA122 Audio Amplifier Evaluation Module; TPA122 MSOP EVM Specifications; Supply voltage range, V; Audio input voltage, V; Minimum load impedance, R
Description 1-3 Introduction 1.2 Description The TPA122 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 TPA122150-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 TPA122 MSOPaudio amplifier EVM for use. Using the TPA122 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
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TPA122 MSOP EVM with the TIPlug-N-Play Audio Amplifier Evaluation Platform (see the platform user’sguide, SLOU011, for additional details). Numbered callouts for selected stepsare shown ...
Page 14 - Quick Start List for Stand-Alone; and V
Quick Start List for Stand-Alone 2-4 Quick Start 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA122 MSOP EVM stand-alone or whenconnecting it into existing circuits or equipment. Connections to the TPA122MSOP module header pins can be made via individual sockets,wire-wrapping,...
Page 15 - Details; Chapter 3
3-1 Details Details This chapter provides details on the TPA122 IC, the evaluation module, thesteps in the Quick-Start List, additional application information, and a parts listfor the TPA122 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 TPA122 MSOP Audio Power Amplifier Evaluation Module; Figure 3–3. TPA122 MSOP EVM Schematic Diagram
The TPA122 MSOP Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TPA122 MSOP Audio Power Amplifier Evaluation Module The TPA122 MSOP Audio Power Amplifier Evaluation Module is powered bya TPA122 150-mW Stereo Audio Amplifier IC. It includes a shutdown controlsignal input with onboard swit...
Page 18 - TPA122 Audio Amplifier IC; loads across the audio band (20 Hz to
The TPA122 MSOP Audio Power Amplifier Evaluation Module 3-4 Details 3.2.1 TPA122 Audio Amplifier IC The TPA122 audio amplifier IC is a CMOS device intended primarily forhigh-performance line-level output, headphone driver, and small speakerapplications. It is supplied in a very small surface-mount M...
Page 19 - Module Gain
The TPA122 MSOP Audio Power Amplifier Evaluation Module 3-5 Details 3.2.2 Module Gain The TPA122 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 (R2 and R...
Page 20 - Using The TPA122 MSOP EVM With the Plug-N-Play Evaluation Platform; Installing and Removing EVM Boards; EVM Insertion; ) Remove all power from the evaluation platform.; ) Remove all power from the evaluation platform.
Using The TPA122 MSOP EVM With the Plug-N-Play Evaluation Platform 3-6 Details 3.3 Using The TPA122 MSOP EVM With the Plug-N-Play Evaluation Platform The TPA122 MSOP Audio Amplifier Evaluation Module is designed for usewith the TI Plug-N-Play Audio Amplifier Evaluation Platform. It simply plugsinto ...
Page 21 - Signal Routing; Figure 3–5. Platform Signal Routing and Outputs
Using The TPA122 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 TPA122 MSOP Headphon...
Page 22 - Shutdown; Headphone Jack Control Signals; Figure 3–6. Shutdown Polarity Control; Lo (this is the typical
Using The TPA122 MSOP EVM With the Plug-N-Play Evaluation Platform 3-8 Details 3.3.3 Shutdown The TPA122 MSOP EVM is equipped with a shutdown control input pin. Whenthis input is tied to V DD , the TPA122 amplifier IC on the module ceases operation and enters an ultra-low-power state. When the EVM s...
Page 23 - Power Requirements
Using The TPA122 MSOP EVM With the Plug-N-Play Evaluation Platform 3-9 Details 3.3.4 Power Requirements The TPA122 MSOP Audio Power Amplifier Evaluation Module can operatefrom a V DD voltage between approximately 2.5 V and 5.5 V. The TI Plug-N-Play Audio Amplifier Evaluation Platform with a voltager...
Page 24 - Inputs and Outputs; Inputs; Figure 3–7. Typical Headphone Plug
Using The TPA122 MSOP EVM With the Plug-N-Play Evaluation Platform 3-10 Details 3.3.5 Inputs and Outputs The TI Plug-N-Play Audio Amplifier Evaluation Platform is equipped withseveral standard conectors for audio inputs and outputs. 3.3.5.1 Inputs In most cases, audio signals enter the platform thro...
Page 25 - Using The TPA122 MSOP EVM Stand-Alone; TPA122 MSOP EVM Connected as a Stereo Headphone Amplifier
Using The TPA122 MSOP EVM Stand-Alone 3-11 Details 3.4 Using The TPA122 MSOP EVM Stand-Alone Using the TPA122 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. Note that the shutdown signal ...
Page 26 - TPA122 MSOP Audio Power Amplifier Evaluation Module Parts List; Table 3–1. TPA122 MSOP EVM Parts List
TPA122 MSOP Audio Power Amplifier Evaluation Module Parts List 3-12 Details 3.5 TPA122 MSOP Audio Power Amplifier Evaluation Module Parts List Table 3–1. TPA122 MSOP EVM Parts List Ref. Description Size EVM Qty. Manufacturer/ Part Number Vendor/Number C1, C2,C3, C4 Capacitor, 1 µ F, 80%/–20%, nonpol...
