Related Manuals for Texas Instruments SLOU020A
Summary of Contents for Texas Instruments SLOU020A
- Page 1 TPA311 MSOP Audio Power Amplifier Evaluation Module User’s Guide 2001 Mixed-Signal Products SLOU020A...
- Page 2 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 Trademarks TI is a trademark of Texas Instruments Incorporated. Preface Chapter Title—Attribute Reference...
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Page 5: Table Of Contents
Introduction ..............Feature Highlights . - Page 6 Running Title—Attribute Reference Figures 1–1 The TI TPA311 MSOP Audio Amplifier Evaluation Module 2–1 Quick Start Platform Map ............2–2 Quick Start Module Map .
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Page 7: Introduction
This chapter provides an overview of the Texas Instruments (TI ) TPA311 MSOP audio amplifier evaluation module (SLOP123). 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 TPA311 MSOP audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TPA311 Low-Voltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) or single-ended operation 3.3-V and 5-V operation 350 mW output power into 8 Ultra-low current consumption in shutdown/mute mode... -
Page 9: Description
1.2 Description The TPA311 MSOP audio power amplifier evaluation module is a complete, low-power single-channel audio power amplifier. It consists of the TI TPA311 350-mW low-voltage audio power amplifier IC in a very small MSOP package, along with a small number of other parts mounted on a circuit board that is approximately one and a quarter inches square (Figure 1–1). - Page 10 Introduction...
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Page 11: Quick Start
The steps in this chapter can be followed to quickly prepare the TPA311 MSOP audio amplifier EVM for use. Using the TPA311 MSOP EVM 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
2.2 Quick Start List for Platform Follow these steps when using the TPA311 MSOP EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user’s guide, SLOU011, for additional details). Numbered callouts for selected steps are shown in Figure 2–1 and details appear in Chapter 3. -
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 TPA311 MSOP EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA311 MSOP 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 TPA311 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TPA311 MSOP evaluation module. Topic Precautions ..........The TPA311 MSOP Audio Power Amplifier Evaluation Module Using The TPA311 MSOP EVM With The Plug-N-Play Evaluation Platform... -
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 Tpa311 Msop Audio Amplifier Evaluation Module
3.2 The TPA311 MSOP Audio Power Amplifier Evaluation Module The TPA311 MSOP audio power amplifier evaluation module is powered by a TPA311 350-mW low-power audio amplifier IC, includes a shutdown control signal input with onboard switch, and can be operated in either the BTL or single-ended output mode. -
Page 18: Tpa311 Audio Amplifier Ic
The TPA311 MSOP Audio Power Amplifier Evaluation Module 3.2.1 TPA311 Audio Amplifier IC The TPA311 audio amplifier IC is a CMOS device intended primarily for bridge- tied load (BTL) operation in battery-powered applications. It is supplied in a very small surface-mount package and has been designed to operate from low supply voltages (between approximately 2.5 V and 5.5 V) and deliver up to approximately 350 mW into an 8- , BTL (Figure 3 –... - Page 19 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. A 470 - F electrolytic coupling capacitor is provided on the platform in the signal path to the headphone output jack for this purpose and a control signal from the platform headphone jack can be routed to the module control input pin to switch the TPA311 IC to the single-ended mode.
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Page 20: Using The Tpa311 Msop Evm With The Plug-N-Play Evaluation Platform
Using The TPA311 MSOP EVM With the Plug-N-Play Evaluation Platform 3.3 Using The TPA311 MSOP EVM With the Plug-N-Play Evaluation Platform The TPA311 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: Signal Routing
Using The TPA311 MSOP EVM With the Plug-N-Play Evaluation Platform 3.3.2 Signal Routing Signal flow on the platform is controlled by two signal routing switches, as shown in Figure 3 – 5. Figure 3–5. Platform Signal Routing and Outputs Audio Signal Input Conditioning... -
Page 22: Mute/Mode And Polarity Control
Using The TPA311 MSOP EVM With the Plug-N-Play Evaluation Platform 3.3.3 Mute/Mode The TPA311 MSOP EVM is equipped with a mute (shutdown) control input pin. When this input is tied to V down and assumes an ultralow-power mode. When the EVM control input is tied to GND or allowed to float, amplifier operation resumes. - Page 23 Using The TPA311 MSOP EVM With the Plug-N-Play Evaluation Platform 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.
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Page 24: Power Requirements
Power Requirements 3.3.4 Power Requirements The TPA311 MSOP audio power amplifier evaluation module can operate from any voltage between approximately 2.5 V and 5.5 V; however, the TPA311 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 25: Inputs And Outputs
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. 3.3.5.1 Inputs In most cases, audio signals enter the platform through either a pair of RCA phono jacks (J3 and J5) or a miniature (1/8 ) stereo phone jack (J4). Certain signal conditioning and amplifier EVMs, however, may have additional signal input connectors mounted on the module circuit board. -
Page 26: Using The Tpa311 Msop Evm Stand-Alone
Using The TPA311 MSOP EVM Stand-Alone 3.4 Using The TPA311 MSOP EVM Stand-Alone Using the TPA311 MSOP audio power amplifier evaluation module stand-alone is much the same as using it with the platform. The same 2.5-V to 5.5-V power supply range and the isolated OUT+ and OUT– lines for BTL operation requirement exists. -
Page 27: Tpa311 Msop Evm Connected For Single-Ended Output
3.4.2 TPA311 MSOP EVM Connected for Single-Ended Output Figure 3–9. TPA311 MSOP EVM Connected for Stereo Single-Ended Output Audio Input (Right) External Mute Control (active high) Audio Input (Left) † Due to the very small size of the MSOP IC package, the standard part number TPA311 is replaced with the code TIAAB Using The TPA311 MSOP EVM Stand-Alone 5 VDC Vdd GND... -
Page 28: Tpa311 Msop Evm Parts List
TPA311 MSOP Audio Power Amplifier Evaluation Module Parts List 3.5 TPA311 MSOP Audio Power Amplifier Evaluation Module Parts List Table 3–1. TPA311 MSOP EVM Parts List Ref. Description Capacitor, 10 F, 6.3 V C1, C2, Capacitor, 1 F, +80%/–20%, nonpolarized Capacitor, 5 pF R1, R2, Resistor, 20 k , 1/16 W, 5%...