Texas Instruments SLOU121 manual Inputs and Outputs

Page 36

Inputs and Outputs

3.3.6Inputs and Outputs

The TI plug-n-play audio amplifier evaluation platform is equipped with several standard conectors for audio inputs and outputs.

3.3.6.1Inputs

In most cases, audio signals enter the platform through either a pair of RCA phono jacks (J3 and J5) or a miniature (1/8 inch) stereo phone jack (J4). Certain signal conditioning and amplifier EVMs, however, may have additional signal input connectors mounted on the module circuit board. The TPA6011A4 EVM has a special PC BEEP signal input pin (TP2) on the top of the module PCB.

The platform audio signal input jacks (J3, J4, and J5) are of the closed-circuit type, grounding the signal input lines when no plugs are inserted.

3.3.6.2Outputs

Amplified audio output signals leave the platform through left and right RCA phono jacks (J7 and J9), left and right pairs of compression connectors for stripped speaker wires (J8), and optionally, through a miniature (1/8 inch) stereo phone jack (J10), for headphones.

The audio output lines from the power amplifiers are separate all the way to the edge of the platform (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 TPA6011A4 power amplifier EVM to operate in the highly-efficient bridge-tied load configuration when driving speakers.

The headphone jack (J10) is capacitively coupled to source select switch S3, which connects J10 to the output lines of either the headphone amplifier socket or the power amplifier sockets (see Figure 3 –6). When the TPA6011A4 output signal is routed to J10 by S3, signals output via J10 are returned to platform ground when a plug is inserted (see Figure 3 –8), requiring single-ended operation of the power amplifiers.

Figure 3–9. Typical Headphone Plug

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Details

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions Read This First Information About Cautions and WarningsRelated Documentation From Texas Instruments Contents Figures TablesIntroduction Feature Highlights TPA6011A4 EVM Specifications DescriptionIntroduction Quick Start EVM JP6 JP7Precautions PowerQuick Start List for Platform Platform PreparationsModule Preparation Typical TPA6011A4 EVM Jumper Settings Quick Start List for Stand-Alone Quick Start Module MapControl Inputs Quick Start Quick Start Details TI Plug-N-Play Audio Amplifier Evaluation Platform TPA6011A4 Audio Power Amplifier Evaluation Module TPA6011A4 EVMTPA6011A4 EVM Schematic Diagram 1 TPA6011A4 Audio Amplifier ICVolume Control Inputs and GainBlock Diagram of SE Volume Control DC Volume Control BTL Mode, VDD = 5 Differential Input Depop Circuitry BTL OperationSingle-Ended Operation Installing and Removing EVM Boards 2 TPA6011A4 Module Jumper Settings and SwitchesEVM Insertion EVM Removal2.1 S1 Shutdown Switch 2.2 J1 Output Mode JumperSignal Routing 2.3 J2 Input Mode Jumper2.4 J3 Input and Output Mode Jumper 2.5 J4 Fade Mode JumperSignal Conditioning Mute Shutdown/ModeHeadphone Output Jack Headphone Jack Control Signals Mute/Mode Select JP6Mute/Mode Polarity Select JP8 Power Requirements Inputs and Outputs InputsOutputs Using the TPA6011A4 EVM Stand-Alone 1 TPA6011A4 EVM Connected for BTL Output2 TPA6011A4 EVM Connected for Single-Ended Output 11. TPA6011A4 EVM Connected for Stereo Single-Ended OutputReference TPA6011A4 EVM Layers and Board Schematic ReferenceTPA06011A4 EVM Schematic Diagram TPA6011A4 EVM Parts List TPA6011A4 EVM Parts List

SLOU121 specifications

Texas Instruments SLOU121 is a comprehensive technical document that serves as a guide for the evaluation and implementation of various TI products. This document highlights the operational capabilities, design considerations, and practical applications of TI’s semiconductor solutions, with a focus on enabling engineers and designers to optimize their designs effectively.

One of the main features of SLOU121 is its emphasis on performance. It provides detailed specifications and operational data that help users understand the key parameters of TI products, such as voltage levels, current ratings, and thermal characteristics. This information is crucial for engineers as they design circuits that require precision and reliability.

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In addition to technical specifications, the document provides guidance on practical implementation strategies. This includes best practices for layout design, thermal management, and component selection. By incorporating these recommendations, engineers can mitigate potential issues during the design phase and ensure that their final products meet or exceed performance expectations.

Overall, Texas Instruments SLOU121 is an essential resource that combines technical knowledge with practical advice, helping engineers to leverage TI technologies for innovative product development. By providing a thorough understanding of features, technologies, and recommendations, SLOU121 equips designers with the necessary tools to create high-performance electronic solutions.
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