Related Manuals for Texas Instruments TPA721
Summary of Contents for Texas Instruments TPA721
- Page 1 TPA721 MSOP Audio Power Amplifier Evaluation Module User’s Guide 2001 Mixed-Signal Products SLOU033A...
- 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 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. TPA721 700-mW Low-Voltage Audio Power Amplifier (literature number SLOS231) This is the data sheet for the TPA721 audio amplifier integrated circuit. FCC Warning This equipment is intended for use in a laboratory test environment only.
-
Page 5: Table Of Contents
..........Using The TPA721 MSOP EVM With The Plug-N-Play Evaluation Platform . - Page 6 ............2–2 Platform Jumper and Switch Settings for the TPA721 MSOP EVM ....
-
Page 7: Introduction
Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA721 MSOP audio amplifier evaluation module (SLOP215). 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 TPA721 MSOP audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TPA721 Low-Voltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) 3.3-V and 5-V operation 700-mW output power into 8 Ω... -
Page 9: Description
SLOP215 TPA721 MSOP EVM † Due to the very small size of the MSOP IC package, the standard part number TPA721 is replaced with the code TIABC. Single in-line header pins are mounted to the underside of the module circuit... - Page 10 Introduction...
-
Page 11: Quick Start
The platform switch and jumper settings shown in Table 2–1 are typical for the TPA721 MSOP EVM. They will cause the TPA721 amplifier IC on the EVM to shut down when a plug is inserted into platform headphone jack J10. -
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 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 TPA721 MSOP module in platform sockets U3 and U4 for stereo operation (or a module in either U3 or U4 for single channel operation), taking care to align the module pins correctly. -
Page 14: Quick Start List For Stand-Alone
SLOP215 TPA721 MSOP EVM † Due to the very small size of the MSOP IC package, the standard part number TPA721 is replaced with the code TIABC Power supply 1) Ensure that all external power sources are set to OFF. -
Page 15: Details
Chapter 3 Details This chapter provides details on the TPA721 IC, the evaluation module, the steps in the Quick-Start List, additional application information, and a parts list for the TPA721 MSOP evaluation module. Topic Page .......... -
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 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 onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source. -
Page 17: The Tpa721 Msop Audio Amplifier Evaluation Module
IN– SLOP215 TPA721 MSOP EVM † Due to the very small size of the MSOP IC package, the standard part number TPA721 is replaced with the code TIABC Figure 3–3. TPA721 MSOP EVM Schematic Diagram 2.5 V to 5.5 V 10 µF... -
Page 18: Tpa721 Audio Amplifier Ic
3.2.3 Module Gain The TPA721 MSOP evaluation module has a set gain of 2. However, the gain can be adjusted to a maximum of 22 by changing the value of resistor R5 (Figure 3–3). Use the following equation to determine value of R4: –R5... - Page 19 A quick rule of thumb (everything else being equal): the module input signal level should be as high as possible without clipping or overloading the TPA721 input, and the TPA721 gain should be kept as low as possible.
-
Page 20: Using The Tpa721 Msop Evm With The Plug-N-Play Evaluation Platform
Using The TPA721 MSOP EVM With the Plug-N-Play Evaluation Platform 3.3 Using The TPA721 MSOP EVM With the Plug-N-Play Evaluation Platform The TPA721 MSOP audio amplifier evaluation module was designed to be used with the TI plug-n-play audio amplifier evaluation platform. It simply plugs into socket U3 or U4. -
Page 21: Platform Signal Routing And Outputs
The audio signal from the input jacks can be applied to the signal conditioning socket (U1) if an EVM is installed there, or socket U1 can be bypassed and the audio input signal applied directly to the inputs of the TPA721 power amplifiers. Switch S2 selects signal conditioning or bypasses it 3.3.3... -
Page 22: Mute/Mode And Polarity Control
JP6. When JP6 is set to mute, use the following JP8 settings for the TPA721: To mute the TPA721 MSOP amplifier module when a plug is inserted into the headphone jack, jumper JP8 to Hi (this is the typical setting). -
Page 23: Power Requirements
The TPA721 MSOP audio power amplifier evaluation module can operate from any voltage between approximately 2.5 V and 5.5 V; however, the TPA721 amplifier IC on the module is characterized for operation at 3.3 V and 5 V. For best performance (highest output power with lowest distortion), the module should be operated at approximately 5 V, unless there is a specific reason for operating it from a lower voltage. -
Page 24: Typical Headphone Plug
(output jacks J7, J8, and J9) — the OUT– lines from the power amplifier sockets are not tied to each other or to platform ground. This allows the TPA721 power amplifier EVMs to operate in the highly-efficient bridge-tied load configuration. -
Page 25: Tpa721 Msop Evm Connected For Stereo Btl Output
U1 † OUT– Left OUT+ TEXAS INSTRUMENTS Audio Input IN– (Left) SLOP215 TPA721 MSOP EVM † Due to the very small size of the MSOP IC package, the standard part number TPA721 is replaced with the code TIABC. Details 3-11... -
Page 26: Tpa721 Msop Evm Parts List
700 mW, mono TPA721DGN PCB1 PCB, TPA721 MSOP EVM † Due to the very small size of the MSOP IC package, the standard part number TPA721 is replaced with the code TIABC. Note: All items are SMD except as noted. 3-12... - Page 27 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPA721MSOPEVM...