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Summary of Contents for Texas Instruments TPA0103
- Page 1 TPA0103 Audio Power Amplifier Evaluation Module User’s Guide August 1998 Mixed-Signal Products SLOU015...
- Page 2 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.
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Page 3: Related Documentation From Texas Instruments
TI audio evaluation modules. TPA0103 3-CHANNEL AUDIO POWER AMPLIFIER STEREO SINGLE-ENDED 500-mW AND MONO BTL 1.75-W (literature number SLOS167) This is the data sheet for the TPA0103 audio amplifier integrated circuit. FCC Warning This equipment is intended for use in a laboratory test environment only. It... -
Page 5: Table Of Contents
........... . . Using The TPA0103 EVM With The Plug-N-Play Evaluation Platform 3.3.1... - Page 6 TPA0103 EVM Connected for Center Channel BTL Output 3–10 TPA0103 EVM Connected for Stereo Headphones Output Tables 2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA0103 2–2 Typical TPA0103 EVM Jumper Settings 2–3 TI Plug-N-Play Platform Jumper and Switch Settings for the TPA0103 2–4...
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Page 7: Introduction
This chapter provides an overview of the Texas Instruments (TI ) TPA0103 Audio Amplifier Evaluation Module (SLOP103). It includes a list of EVM features, a brief description of the module illustrated with a pictorial diagram, and a list of EVM specifications. - Page 8 Introduction...
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Page 9: Feature Highlights
1.1 Feature Highlights The TI TPA0103 Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TPA0103 Low-Voltage Audio Power Amplifier Evaluation Module 535-mW single-ended into 4 1.75-W bridge-tied load (BTL) into 4 3.3-V and 5-V operation Low distortion (<... -
Page 10: Description
Evaluation Platform, or to be wired directly into existing circuits and equipment when used stand-alone. The platform has room for a single TPA0103 evaluation module and is a convenient vehicle for demonstrating TI’s audio power amplifier and related evaluation modules. The EVMs simply plug into the platform, which auto-... -
Page 11: Quick Start
The steps in this chapter can be followed to quickly prepare the TPA0103 audio amplifier EVM for use. Using the TPA0103 with the TI Plug-N-Play Audio Amplifier Evaluation Platform is a quick and easy way to connect power, signal and control inputs, and signal outputs to the EVM using standard connectors. -
Page 12: Precautions
Precautions 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to V input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source. -
Page 13: Quick Start List For Platform
1) Ensure that all external power sources are set to OFF and that the platform power switch S1 is set to OFF. 2) Install a TPA0103 module in platform socket U2, taking care to align the module pins correctly. 3) Use switch S2 to select or bypass the signal conditioning EVM (U1). -
Page 14: Quick Start List For Stand-Alone
Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA0103 EVM stand-alone or connect it into existing circuits or equipment. Connections to the TPA0103 module header pins can be made via individual sockets, wire-wrapping, or soldering to the pins, either on the top or the bottom of the module circuit board. -
Page 15: Details
This chapter provides details on the TPA0103 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TPA0103 evaluation module. Topic Precautions .......... -
Page 16: Precautions
Precautions 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to V input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source. -
Page 17: The Tpa0103 Audio Amplifier Evaluation Module
3.2 The TPA0103 Audio Power Amplifier Evaluation Module The TPA0103 Audio Power Amplifier Evaluation Module is powered by a TPA0103 3-channel audio power amplifier capable of delivering 535 mW of continuous power to each of the left and right single-ended 4- speaker loads, and 1.75 W of continuous power (BTL) to a center channel 4-... -
Page 18: Tpa0103 Audio Amplifier Ic
3.2.1 TPA0103 Audio Amplifier IC The TPA0103 audio amplifier IC is a low-voltage CMOS device intended primarily for desktop and notebook PCs. In the typical application, the center channel amplifier is driven from a mix of the L/R inputs to produce a monaural representation of the stereo signal. -
Page 19: Output Modes
IC data sheet, TI Literature Number SLOS167. 3.2.2 Output Modes The TPA0103 amplifier operates in any of three output modes or mutes according to the status of the two control terminals MODE A and MODE B as shown in Table 3–1. -
Page 20: Inputs And Gain
Inputs and Gain The left and right single-ended channels remain separate from input to output. On the TPA0103 EVM board, the left and right channel inputs are mixed to produce a monaural representation of the stereo signal and applied to the amplifier IC center channel input. -
Page 21: Using The Tpa0103 Evm With The Plug-N-Play Evaluation Platform
3.3 Using The TPA0103 EVM With the Plug-N-Play Evaluation Platform The TPA0103 Audio Amplifier Evaluation Module was designed to be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform. It simply plugs into socket U2. The following paragraphs provide additional details for using the TPA0103 EVM with the platform. -
Page 22: Tpa0103Module Jumper Settings
3.3.2 TPA0103 Module Jumper Settings The TPA0103 EVM is equipped with several jumpers that act like SPST switches to allow module operation to be modified to suit various requirements. In the following discussion, setting a jumper to ON means that a shunt is installed across the two pins of the jumper. -
Page 23: Tpa0103 Output Modes
To have the module amplifier IC enter the shutdown mode when the module mute control input is activated, set shutdown jumper S1 to ON. The mute control output pin on the TPA0103 amplifier IC goes high when the mute mode is selected by the output mode jumpers (S2 and S4). Jumper S1... - Page 24 To select the line inputs, set input select jumper S3 to OFF. To select the headphone inputs, set input select jumper S3 to ON. The TPA0103 amplifier IC has two separate inputs for each of the left and right stereo channels. An internal multiplexor selects which input will be connected to the amplifier based on the state of the HP/LINE pin on the IC.
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Page 25: Platform Signal Routing And Outputs
When S3 is set to the power amplifier position (U2 – U4), the headphone jack is connected to the TPA0103 left and right OUT+ output lines. When a plug is inserted into the jack, signals output through J10 are returned to platform ground, requiring single-ended power amplifier operation. -
Page 26: Mute/Mode And Polarity Control
3.3.4 Mode Control The TPA0103 EVM is equipped with a mode control input pin that receives a control signal from the platform. This EVM pin is connected to the amplifier IC Mode A output mode control input pin. The state of this input, in conjunction with the state of the Mode B output mode control input pin, controls the output mode of the amplifier IC on the EVM. - Page 27 To switch the TPA0103 amplifier module between center channel speaker and stereo headphone modes using the control signal from...
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Page 28: Power Requirements
Power Requirements The TPA0103 Audio Power Amplifier Evaluation Module can operate from any voltage between approximately 3 V and 5.5 V; however, the TPA0103 amplifier IC on the module is characterized for operation at 3.3 V and 5 V. For best... -
Page 29: Inputs And Outputs
3.3.6.2 Outputs When the TPA0103 EVM is installed, amplified audio output signals leave the platform through the negative left and right compression connectors for stripped speaker wires (J8) and through a miniature (1/8 ) stereo phone jack (J10), for headphones. -
Page 30: Using The Tpa0103 Evm Stand-Alone
Figure 3–9. TPA0103 EVM Connected for Center Channel BTL Output Audio Input (Right) Audio Input (Left) Table 3–3. Typical TPA0103 EVM Jumper Settings for Center Channel BTL Stand-Alone TPA0103 Note: ON = shunt installed, OFF = open, X = don’t care 3-16 ROUT+ COUT–... -
Page 31: Typical Tpa0103 Evm Jumper Settings For Stereo Headphones Output
Figure 3–10. TPA0103 EVM Connected for Stereo Headphones Output Audio Input (Right) Audio Input (Left) Table 3–4. Typical TPA0103 EVM Jumper Settings for Stereo Headphone Output TPA0103 Note: ON = shunt installed, OFF = open, X = don’t care Using The TPA0103 EVM Stand-Alone ROUT+ COUT–... -
Page 32: Tpa0103 Evm Parts List
TPA0103 Audio Power Amplifier Evaluation Module Parts List 3.5 TPA0103 Audio Power Amplifier Evaluation Module Parts List Table 3–5. TPA0103 EVM Parts List Ref. Description C1, C2, Capacitor, 1 F, +80% C6, C7 –20%, nonpolarized C5, C9, C10 Capacitor, 2.2 F, 20%,...
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