Texas Instruments TPA0202 manual Inputs and Outputs

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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) stereo 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.

3.3.6.2Outputs

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) 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) Ð the OUT± lines from the power amplifier sockets are not tied to each other or to platform ground. This allows the TPA0202 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±5). When the TPA0202 output signal is routed to J10 by S3, signals output via J10 are returned to platform ground when a plug is inserted (Figure 3±7), requiring single-ended operation of the power amplifiers.

Figure 3±8. Typical Headphone Plug

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Details 3-15

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Contents Users Guide Important Notice Related Documentation From Texas Instruments PrefaceIf You Need Assistance Contents Tables FiguresIntroduction Feature Highlights ±1. The TI TPA0202 Audio Amplifier Evaluation Module DescriptionTPA0202 EVM Specifications EVM JP6 JP7 JP8 Quick StartAudio Input PrecautionsPlatform preparations Quick Start List for Platform±4. Typical TPA0202 EVM Jumper Settings ±3. Quick Start Module Map Quick Start List for Stand-AloneControl Inputs Details ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform ±2. TPA0202 EVM TPA0202 Audio Power Amplifier Evaluation Module1 TPA0202 Audio Amplifier IC ±3. TPA0202 EVM Schematic DiagramBTL Operation Depop CircuitryInputs and Gain SIngle-Ended OperationEVM Insertion Installing and Removing EVM BoardsEVM Removal ±5. TPA0202 EVM Jumpers and Switches 2 TPA0202 Module Jumper Settings and Switches2.3 S3 Ð Input Select Jumper 2.2 S2 Ð Mute Switch2.4 S4 Ð Output Mode Jumper 2.1 S1 Ð Shutdown Jumper2.6 S6 Ð Autosense Jumper 2.7 S7 Ð SE Output Mode Switch2.8 S8 Ð Junction Temperature Measurement Jumper 2.5 S5 Ð VDD Bridge JumperSignal Conditioning Signal RoutingHeadphone Output Jack Mute/Mode Headphone Jack Control SignalsMute/Mode Polarity Select JP8 Mute/Mode Select JP6Power Requirements Inputs Inputs and OutputsOutputs 1 TPA0202 EVM Connected for BTL Output Using The TPA0202 EVM Stand-Alone±10. TPA0202 EVM Connected for Stereo Single-Ended Output 2 TPA0202 EVM Connected for Single-Ended Output±1. TPA0202 EVM Parts List TPA0202 Audio Power Amplifier Evaluation Module Parts List

TPA0202 specifications

The Texas Instruments TPA0202 is a high-performance Class-D audio amplifier designed for a variety of portable audio applications. Renowned for its efficiency and sound quality, the TPA0202 is an ideal choice for battery-operated devices such as mobile phones, tablet computers, and other handheld devices. With the continuous push for better audio experiences in compact formats, the TPA0202 stands out with its impressive specifications and features.

One of the key characteristics of the TPA0202 is its power efficiency. Operating at a high efficiency rate of up to 90%, this Class-D amplifier minimizes heat generation, allowing it to deliver more power to the audio output while extending battery life. This efficiency is especially crucial for portable devices, where battery performance is a key consideration.

The TPA0202 supports an output power of 2 watts per channel into 4 ohms, making it capable of driving small speakers or headphones with excellent sound quality. The device features a built-in differential input stage that enhances noise immunity, thereby ensuring cleaner audio reproduction. It also supports a wide supply voltage range from 3V to 5.5V, contributing to its versatility in different applications.

In terms of audio quality, the TPA0202 boasts low total harmonic distortion (THD) and exceptional linearity, resulting in rich, clear audio output. Additionally, it comes equipped with selectable gain settings, allowing designers to tailor the amplifier to various output requirements and system designs.

The amplifier also integrates various protection features, including thermal shutdown, short-circuit protection, and undervoltage detection, ensuring robust operation under different conditions. The TPA0202 is also simple to implement in designs, with a minimal external component requirement, further enhancing its appeal to engineers seeking quick and efficient solutions for audio amplification needs.

Moreover, the compact package size of the TPA0202 allows for easy integration into space-constrained designs. With its combination of high efficiency, excellent audio quality, and protective features, the Texas Instruments TPA0202 continues to be a compelling choice for developers looking to enhance audio performance in portable and battery-operated devices. Whether for consumer electronics or in more specialized applications, the TPA0202 delivers reliable and impressive sound amplification, making it a go-to component for modern audio solutions.