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1998 Mixed-Signal Products User ’ s Guide.
TP A31 1 Audio Power Amplifier Evaluation Module User ’ s Guide SLOU013 February 1998 Printed on Recycled Paper.
IMPORT ANT NOTICE T exas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify , before placing orders, that the information being relied on is current.
iii Chapter Title—Attribute Reference Preface Related Documentation From T exas Instruments TI Plug-N-Play Audio Amplifier Evaluation Platform (literature number SLOU01 1) provides detailed information on the evaluation platform and its use with TI audio evaluation modules.
If Y ou Need Assistance iv If Y ou Need Assistance. . . If you want to. . . Do this. . . Request more information about T exas Instruments Digital Signal Processing (DSP) products Call the PIC † hot.
Running Title—Attribute Reference v Chapter Title—Attribute Reference Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-3 .
Running Title—Attribute Reference vi Figures 1–1 The TI TP A31 1 Audio Amplifier Evaluation Module 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . .
1-1 Introduction Introduction This chapter provides an overview of the T exas Instruments (TI ) TP A31 1 Audio Amplifier Evaluation Module (SLOP1 16). It includes a list of EVM features, a brief description of the module illustrated with a pictorial diagram, and a list of EVM specifications.
1-2 Introduction.
Feature Highlights 1-3 Introduction 1.1 Feature Highlights The TI TP A31 1 Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TP A31 1 Low-V oltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) or single-ended operation 3.
Description 1-4 Introduction 1.2 Description The TP A31 1 Audio Power Amplifier Evaluation Module is a complete, low- power single-channel audio power amplifier .
2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TP A31 1 audio amplifier EVM for use. While using the TP A31 1 with the TI Plug-N-Play Audio Amplifier Eval.
Precautions 2-2 Quick Start 2.1 Precautions Power Supply Input Polarity and Maximum V oltage Always ensure that the polarity and voltage of the external power connected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct.
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Use the following steps when using the TP A31 1 EVM with the TI Plug-N-Play Audio Amplifier Evaluation Platform (see the platform user ’s guide, SLOU01 1, for additional details).
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 TP A31 1 EVM stand-alone or when connecting it into existing circuits or equipment.
3-1 Details Details This chapter provides details on the TP A31 1 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TP A31 1 evaluation module. T opic Page 3.1 Precautions 3–2 3.
Precautions 3-2 Details 3.1 Precautions Power Supply Input Polarity and Maximum V oltage Always ensure that the polarity and voltage of the external power connected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct.
The TP A31 1 Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TP A31 1 Audio Power Amplifier Evaluation Module The TP A31 1 Audio Power Amplifier Evaluation Module is powered by a TP A31 1 .
The TP A31 1 Audio Power Amplifier Evaluation Module 3-4 Details 3.2.1 TP A31 1 Audio Amplifier IC The TP A31 1 audio amplifier IC is a CMOS device intended primarily for bridge-tied load (BTL) operation in battery-powered applications.
The TP A31 1 Audio Power Amplifier Evaluation Module 3-5 Details 3.2.3 SIngle-Ended Operation For single-ended operation, the module SE/BTL control input pin must be held high. The speaker (or headphone) load is connected to the module OUT+ output pin through a coupling capacitor , and to platform/system ground.
Using The TP A31 1 EVM With the Plug-N-Play Evaluation Platform 3-6 Details 3.3 Using The TP A31 1 EVM With the Plug-N-Play Evaluation Platform The TP A31 1 Audio Amplifier Evaluation Module was designed to be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform.
Using The TP A31 1 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, as shown in Figure 3 – 5.
Using The TP A31 1 EVM With the Plug-N-Play Evaluation Platform 3-8 Details 3.3.3 Mute/Mode The TP A31 1 EVM is equipped with a mute (shutdown) control input pin. When this input is tied to V DD , the TP A31 1 amplifier IC on the module shuts down and assumes an ultra-low power mode.
Using The TP A31 1 EVM With the Plug-N-Play Evaluation Platform 3-9 Details 3.3.3.2 Mute/Mode Select (JP6) A 3-pin jumper header (JP6) on the platform, functioning as a SPDT switch, routes the control signal from the headphone jack to either the mute control input pin or the mode control input pin of the evaluation module.
Power Requirements 3-10 Details 3.3.4 Power Requirements The TP A31 1 Audio Power Amplifier Evaluation Module can operate from any voltage between approximately 2 V and 5.5 V , however , the TP A31 1 amplifier IC on the module is characterized for operation at 3.
Inputs and Outputs 3-1 1 Details 3.3.5 Inputs and Outputs The TI Plug-N-Play Audio Amplifier Evaluation Platform is equipped with several standard conectors for audio inputs and outputs.
Using The TP A31 1 EVM Stand-Alone 3-12 Details 3.4 Using The TP A31 1 EVM Stand-Alone Using the TP A31 1 Audio Power Amplifier Evaluation Module stand-alone is much the same as using it with the platform. The same 2-V to 5.5-V power sup- ply range and the isolated OUT+ and OUT– lines for BTL operation require- ment exists.
Using The TP A31 1 EVM Stand-Alone 3-13 Details 3.4.2 TP A31 1 EVM Connected for Single-Ended Output Figure 3–9. TP A31 1 EVM Connected for Stereo Single-Ended Output 5 VDC Audio Input (Right) 5 VDC.
TP A31 1 Audio Power Amplifier Evaluation Module Parts List 3-14 Details 3.5 TP A31 1 Audio Power Amplifier Evaluation Module Parts List T able 3–1. TP A31 1 EVM Parts List Ref.
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