Texas Instruments SLOU082 manual Plug-N-Play Platform Inputs and Outputs

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Plug-N-Play Platform Inputs and Outputs

3.3 Plug-N-Play Platform Inputs and Outputs

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

3.3.1Inputs

In most cases, audio signals enter the platform through either a pair of RCA phono jacks (J3 and J5) or a miniature (1/8″ ) mono phone jack (J4). Certain signal conditioning and amplifier EVMs, however, may have additional signal input connectors mounted on the module circuit board.

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.

3.3.2Outputs

Amplified audio output signals leave the platform through the left RCA phono jack (J9) and the left pair of compression connectors for stripped speaker wires (J8).

The audio output lines from the power amplifiers are separate all the way to the edge of the platform (output jacks J8 and J9) Ð the OUT+ and OUT± lines from the power amplifier sockets are not tied to each other or to platform ground. This allows the TPA032D03 class-D 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 (Figure 3±2).

Figure 3±2. Typical Headphone Plug

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3-4

Details

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Contents Users Guide Important Notice Preface Related Documentation From Texas InstrumentsPage Contents Figures TablesIntroduction Feature Highlights Description TPA032D03 Class-D EVM Specifications MaximumTypical Quick Start JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8Precautions Audio PowerQuick Start List for Platform Platform PreparationsQuick Start List for Stand-Alone Details ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform Plug-N-Play Platform Power Requirements and Connections Plug-N-Play Platform Inputs and Outputs InputsOutputs Control and Indicator Circuits TPA032D03 Class-D EVM Test Points2 S2 Ð Mute Switch Module Switches1 S1 Ð Shutdown Switch 3 J1 Ð Headphone Jack Mode SwitchUsing The TPA032D03 Class-D EVM Stand-Alone Power ConnectionsControls and Indicators Input ConnectionsOutput Connections TPA032D03 Class-D EVM Bill of Materials ±4. TPA032D03 Class-D EVM Bill of MaterialsTPA032D03 Class-D EVM Schematic TPA032D03 class-D EVM schematic is shown in ±4±5. TPA032D03 Class-D EVM Top Assembly 10 TPA032D03 Class-D EVM PCB Layers±7. TPA032D03 Class-D EVM Top Layer ±9. TPA032D03 Class-D EVM Third Layer Details

SLOU082 specifications

Texas Instruments SLOU082 is a technical document primarily focused on the TPS7A47 device, which is an enhanced, low-noise linear voltage regulator designed for world-class performance in sensitive analog applications. This document explains the features, technologies, and characteristics that set the TPS7A47 apart in the industry.

One of the main features of the TPS7A47 is its ultra-low output noise, boasting a remarkable specification of just 1.2 μVRMS across a bandwidth of 10 Hz to 100 kHz. This characteristic makes it an ideal choice for high-precision, low-noise applications such as RF and audio signal processing, where minimizing noise is crucial for system performance. Additionally, the device offers a wide output voltage range from 1.4 V to 20 V, providing flexibility in various applications.

The TPS7A47 operates with a maximum output current of 1 A, enabling it to support multiple loads efficiently. Its dropout voltage is impressively low, particularly at light load conditions, ensuring high-efficiency performance in battery-powered applications. This aspect significantly extends battery life, making it suitable for portable devices.

Another highlight is the PowerPAD package offered for the TPS7A47, which enhances thermal performance and simplifies PCB design. The integration of thermal protection ensures the regulator operates safely under various conditions, preventing potential damage due to overheating.

The TPS7A47 also includes features such as reverse current protection, which prevents current from flowing back into the input when the output voltage exceeds the input voltage. This feature enhances reliability and extends the longevity of the device in various circuit configurations.

In terms of control, the TPS7A47 utilizes a low-dropout architecture, ensuring steady voltage regulation with minimal input-to-output voltage differential. It also supports a wide range of capacitor types, which allows for flexibility in component selection in layout design.

Overall, the Texas Instruments SLOU082 document on the TPS7A47 provides detailed insights into one of the most effective voltage regulation solutions available today. With exceptional noise performance, a versatile voltage range, robust thermal management, and reliability characteristics, the TPS7A47 is an exemplary choice for engineers and designers aiming to achieve high-performance analog systems.
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