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Manual Texas Instruments TPA301

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  • Texas Instruments TPA301 - page 1

    2001 Mixed-Signal Products User ’ s Guide SLOU014A ...

  • Texas Instruments TPA301 - page 2

    IMPORT ANT NOTICE T exas 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 product ...

  • Texas Instruments TPA301 - page 3

    iii Chapter Title — Attribute Reference Preface Related Documentation From T exas Instruments TI Plug-N-Play Audio Amplifier Evaluation Platform (literature number SLOU01 1) provides detailed information on the evaluation platform and its use with TI audio evaluation modules. TP A301 350-mW Low-V oltage Audio Power Amplifier (literature number SL ...

  • Texas Instruments TPA301 - page 4

    iv ...

  • Texas Instruments TPA301 - page 5

    Running Title — Attribute Reference v Chapter Title — Attribute Reference Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Texas Instruments TPA301 - page 6

    Running Title — Attribute Reference vi Figures 1 – 1 The TI TP A301 Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 2 Quick Start Module Map ...

  • Texas Instruments TPA301 - page 7

    1-1 Introduction Introduction This chapter provides an overview of the T exas Instruments (TI  ) TP A301 audio amplifier evaluation module (SLOP1 15). It includes a list of EVM features, a brief description of the module illustrated with a pictorial diagram, and a list of EVM specifications. T opic Page 1.1 Feature Highlights 1–2 . . . . . . . ...

  • Texas Instruments TPA301 - page 8

    Feature Highlights 1-2 Introduction 1.1 Feature Highlights The TI TP A301 audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TP A301 Low-V oltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) or single-ended operation 3.3-V and 5-V operation 3 ...

  • Texas Instruments TPA301 - page 9

    Description 1-3 Introduction 1.2 Description The TP A301 audio power amplifier evaluation module is a complete, low-pow- er single-channel audio power amplifier . It consists of the TI TP A301 350-mW low-voltage audio power amplifier IC along with a small number of other parts mounted on a circuit board that is approximately one and a quarter inche ...

  • Texas Instruments TPA301 - page 10

    1-4 Introduction ...

  • Texas Instruments TPA301 - page 11

    2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TP A301 audio amplifier EVM for use. While using the TP A301 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, the audio ...

  • Texas Instruments TPA301 - page 12

    Precautions 2-2 Quick Start 2.1 Precautions Power Supply Input Polarity and Maximum V oltage Always ensure that the polarity and voltage of the external power connected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in ...

  • Texas Instruments TPA301 - page 13

    Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Use the following steps when using the TP A301 EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user ’ s guide, SLOU01 1, for additional details). Numbered callouts for selected steps are shown in Figure 2 – 1 and details appear in C ...

  • Texas Instruments TPA301 - page 14

    Quick Start List for Stand-Alone 2-4 Quick Start 2.3 Quick Start List for Stand-Alone Use the following steps to use the TP A301 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TP A301 module header pins can be made via individual sockets, wire-wrapping, or soldering to the pins, either on the top or th ...

  • Texas Instruments TPA301 - page 15

    3-1 Details Details This chapter provides details on the TP A301 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TP A301 evaluation module. T opic Page 3.1 Precautions 3 – 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Texas Instruments TPA301 - page 16

    Precautions 3-2 Details 3.1 Precautions Power Supply Input Polarity and Maximum V oltage Always ensure that the polarity and voltage of the external power connected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fus ...

  • Texas Instruments TPA301 - page 17

    The TP A301 Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TP A301 Audio Power Amplifier Evaluation Module The TP A301 audio power amplifier evaluation module is powered by a TP A301 350-mW low-power audio amplifier IC and includes onboard gain adjustment, a shutdown control signal input with onboard switch, and can be operated in eith ...

  • Texas Instruments TPA301 - page 18

    The TP A301 Audio Power Amplifier Evaluation Module 3-4 Details 3.2.1 TP A301 Audio Amplifier IC The TP A301 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 (bet ...

  • Texas Instruments TPA301 - page 19

    The TP A301 Audio Power Amplifier Evaluation Module 3-5 Details In the single-ended mode, the amplifier inside the TP A301 IC that drives the OUT – line still operates and dissipates power even though it is not being used to help drive the load. A better choice for low-power applications that operate in the single-ended mode from time to time mig ...

  • Texas Instruments TPA301 - page 20

    Using The TP A301 EVM With the Plug-N-Play Evaluation Platform 3-6 Details 3.3 Using The TP A301 EVM With the Plug-N-Play Evaluation Platform The TP A301 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. The following paragraphs provide additi ...

  • Texas Instruments TPA301 - page 21

    Using The TP A301 EVM With the Plug-N-Play Evaluation Platform 3-7 Details 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 U1 Signal Conditioning On Off U5 Stereo Headphone Amplifier S2 R L R L L U5 U2 – U4 S3 J10 Headpho ...

  • Texas Instruments TPA301 - page 22

    Using The TP A301 EVM With the Plug-N-Play Evaluation Platform 3-8 Details 3.3.3 Muting The TP A301 EVM is equipped with a mute (shutdown) control input pin. When this input is tied to V DD , the TP A301 amplifier IC on the module shuts down and assumes an ultra-low power mode. When the control input is tied to GND or allowed to float, amplifier op ...

  • Texas Instruments TPA301 - page 23

    Power Requirements 3-9 Details 3.3.4 Power Requirements The TP A301 audio evaluation module can operate from any voltage between approximately 2.5 V and 5.5 V , however , the TP A301 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 o ...

  • Texas Instruments TPA301 - page 24

    Inputs and Outputs 3-10 Details 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) ...

  • Texas Instruments TPA301 - page 25

    Using The TP A301 EVM Stand-Alone 3-1 1 Details 3.4 Using The TP A301 EVM Stand-Alone Using the TP A301 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 re- quirement exists. Note that the mute sign ...

  • Texas Instruments TPA301 - page 26

    Using The TP A301 EVM Stand-Alone 3-12 Details 3.4.2 TP A301 EVM Connected for Single-Ended Output Figure 3 – 9. TP A301 EVM Connected for Stereo Single-Ended Output 5 VDC Audio Input (Right) 5 VDC Audio Input (Left) External Mute Control (active high) GND C4 R3 IN+ C2 Shutdown R1 R2 C1 C6 C3 C5 R5 DL OUT – GND OUT+ GND S1 GND +5 V R4 EVM – 3 ...

  • Texas Instruments TPA301 - page 27

    TP A301 Audio Power Amplifier Evaluation Module Parts List 3-13 Details 3.5 TP A301 Audio Power Amplifier Evaluation Module Parts List T able 3 – 1. TP A301 EVM Parts List Ref. Description Size EVM Qty . Manufacturer/ Part Number V endor Number R4 T rim Pot, 200 k Ω Cermet ST SL, (through hole) 1 Bourns 3323P-1-204 Digi-Key 3323P-204-ND C6 Capa ...

  • Texas Instruments TPA301 - page 28

    3-14 Details ...

Manufacturer Texas Instruments Category Stereo Amplifier

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