Related Manuals for Texas Instruments TPA321
Summary of Contents for Texas Instruments TPA321
- Page 1 TPA321 MSOP Audio Power Amplifier Evaluation Module User’s Guide November 2000 Mixed Signal Products SLOU089...
- Page 2 MPORTANT 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 acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability.
- Page 3 SLOU011) provides detailed information on the evaluation platform and its use with TI audio evaluation modules. TPA321 350-mW Low-Voltage Audio Power Amplifier (literature number SLOS312) This is the data sheet for the TPA321 audio amplifier integrated circuit. Read This First...
- Page 4 FCC Warning FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference.
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Page 5: Table Of Contents
........... . Tables 2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA321 ..2–2 Platform Jumper and Switch Settings for the TPA321 . -
Page 7: Introduction
Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA321 audio amplifier evaluation module (SLOP341). 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: Feature Highlights
Feature Highlights 1.1 Feature Highlights The TI TPA321 audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TPA321 Low-Voltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) or single-ended operation 2.5-V and 5.5-V operation 350 mW output power into 8 Ω... -
Page 9: Description
The platform has room for a pair of TPA321 evaluation modules and is a convenient vehicle for demonstrating TI’s audio power amplifier and related evaluation modules. - Page 10 Introduction...
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Page 11: Operations
The platform switch and jumper settings shown in Table 2–1 are typical for the TPA321 EVM. These settings cause the TPA321 to mute when a plug is in- serted into platform headphone jack J10. Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA321... -
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 power input connector J1, J2, and/or V power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open on-board 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
3) Use switch S2 to select or bypass the signal conditioning EVM (U1). 4) Set control signal polarity jumper JP8 to Hi. 5) Set jumper JP6 to select the mute control input (which causes the TPA321 to shut down if a plug is inserted into platform headphone jack J10). -
Page 14: Quick Start List For Stand-Alone
Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Follow the steps in this section to use the TPA321 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA321 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 Quick Start List for Stand-Alone 8) Adjust the signal source level as needed. Operations...
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Page 16: References
References 2.4 References 2.4.1 TPA321 EVM Connected for Stereo BTL Output Figure 2–3. TPA321 EVM Connected for Stereo BTL Output 5 VDC Shutdown † OUT– Right OUT+ TEXAS Audio INSTRUMENTS Input IN– SLOP341 (Right) TPA321 MSOP EVM 5 VDC Shutdown... -
Page 17: Tpa321 Evm Connected For Stereo Single-Ended Output
References 2.4.2 TPA321 EVM Connected for Stereo Single-Ended Output Figure 2–4. TPA321 EVM Connected for Stereo Single-Ended Output 5 VDC Shutdown † OUT– OUT+ TEXAS Audio INSTRUMENTS Input 33 µF – IN– (Right) SLOP341 1000 µF TPA321 MSOP EVM 5 VDC... -
Page 18: Tpa321 Msop Audio Power Amplifier Evaluation Module Parts List
350 mW, mono TPA321DGN PCB1 PCB, TPA321 MSOP EVM † Due to the very small size of the MSOP IC package, the standard part number TPA321 is replaced with the code TIAJB. Note: All items are SMD except as noted. Operations... -
Page 19: Tpa321 Evm Pcb
TPA321 MSOP EVM PCB Layers 2.4.5 TPA321 MSOP EVM PCB Layers The following illustrations depict the TPA321 EVM PCB layers and silkscreen. These drawings are not to scale. Gerber plots can be obtained from any TI sales office. Figure 2–6. TPA321 EVM PCB Figure 2–7. -
Page 20: Tpa321 Evm Top Layer
TPA321 MSOP EVM PCB Layers Figure 2–8. TPA321 EVM Top Layer Figure 2–9. TPA321 EVM Bottom Layer 2-10 Operations...
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