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Manuel d’utilisation Texas Instruments TPA0202

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Summary
  • Texas Instruments TPA0202 - page 1

    May 1998 Mixed-Signal Products User ’ s Guide SLOU016 ...

  • Texas Instruments TPA0202 - page 2

    IMPORT ANT NOTICE T exas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify , before placing orders, that the information being relied on is current. TI warrants performance ...

  • Texas Instruments TPA0202 - 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 A0202 STEREO 2-W AUDIO POWER AMPLIFIER (literature number SLOS205) Thi ...

  • Texas Instruments TPA0202 - page 4

    If Y ou Need Assistance iv If Y ou Need Assistance. . . If you want to. . . Do this. . . Request more information about T exas Instruments mixed signal products Call the PIC † hotline: (972) 644–5580 Or send a fax to the PIC: (972) 480–7800 Or write to: T exas Instruments Incorporated Product Information Center , MS 3123 P .O. Box 660246 Dall ...

  • Texas Instruments TPA0202 - page 5

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

  • Texas Instruments TPA0202 - page 6

    Running Title—Attribute Reference vi Figures 1–1 The TI TP A0202 Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2 Module Preparation 2-4 . . . . . ...

  • Texas Instruments TPA0202 - page 7

    1-1 Introduction Introduction This chapter provides an overview of the T exas Instruments (TI  ) TP A0202 Audio Amplifier Evaluation Module (SLOP202). 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 TPA0202 - page 8

    Feature Highlights 1-2 Introduction 1.1 Feature Highlights The TI TP A0202 Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TP A0202 Stereo 2-W Audio Power Amplifier Evaluation Module Internal depop circuitry to eliminate turn-on transients in outputs Dual channel, bridge-t ...

  • Texas Instruments TPA0202 - page 9

    Description 1-3 Introduction 1.2 Description The TP A0202 Stereo 2-W Audio Power Amplifier Evaluation Module is a complete, 2-W att per channel stereo audio power amplifier . It consists of the TI TP A0202 Stereo 2-W Audio Power Amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2 inches by ...

  • Texas Instruments TPA0202 - page 10

    TP A0202 EVM Specifications 1-4 Introduction 1.3 TP A0202 EVM Specifications Supply voltage range, V DD 3 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply current, I DD 2 A max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Texas Instruments TPA0202 - page 11

    2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TP A0202 audio amplifier EVM for use. Using the TP A0202 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. However , the ...

  • Texas Instruments TPA0202 - 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 on-board soldered-i ...

  • Texas Instruments TPA0202 - page 13

    Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TP A0202 EVM with the TI Plug-N-Play Au- dio 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 Figure 2–2, and detai ...

  • Texas Instruments TPA0202 - page 14

    Quick Start List for Platform 2-4 Quick Start Evaluation Module Preparations Figure 2–2. Module Preparation GND ROUT+ HP/L* ROUT– SE/BTL* S7 MUTE GND LOUT– LOUT+ S2 C5 C4 R1 R3 C1 C2 C12 L VDD GND R5 GND GND LIN LHP C3 R4 R2 C10 C9 RVDD GND C8 R9 R7 R10 R8 C7 C6 RHP RIN GND GND R12 R13 S3 S4 S5 S6 R1 1 C1 1 + D1 TP A0202 SAMPLE EVM Lit.# SLOP ...

  • Texas Instruments TPA0202 - page 15

    Quick Start List for Stand-Alone 2-5 Quick Start 2.3 Quick Start List for Stand-Alone Follow these steps to use the TP A0202 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TP A0202 module header pins can be made via individual sockets, wire-wrapping, or soldering to the pins, either on the top or the b ...

  • Texas Instruments TPA0202 - page 16

    Quick Start List for Stand-Alone 2-6 Quick Start Evaluation Module Preparations 6) T o have the module amplifier IC enter the shutdown mode when the module mute control input is activated, set shutdown jumper S1 to ON . T o have the amplifier IC only mute when the module mute control input is activated, set shutdown jumper S1 to OFF . 7) T o select ...

  • Texas Instruments TPA0202 - page 17

    3-1 Details Details This chapter provides details on the TP A0202 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TP A0202 evaluation module. T opic Page 3.1 Precautions 3–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Texas Instruments TPA0202 - page 18

    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 on-board soldered-in fu ...

  • Texas Instruments TPA0202 - page 19

    The TP A0202 Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TP A0202 Audio Power Amplifier Evaluation Module The TP A0202 Audio Power Amplifier Evaluation Module is powered by a TP A0202 stereo power amplifier capable of delivering greater than 2 W of continuous power per channel into 3- Ω loads. The amplifier IC can be operated in e ...

  • Texas Instruments TPA0202 - page 20

    The TP A0202 Audio Power Amplifier Evaluation Module 3-4 Details Figure 3–3. TP A0202 EVM Schematic Diagram GND/HS GND/HS S2 NC NC ROUT+ LOUT+ RLINE IN LLINE IN HP/LINE MUTE OUT ROUT– LOUT– SE/BTL MUTE IN GND/HS GND/HS RHP IN LHP IN RBYP ASS LBYP ASS RV DD LV DD NC SHUTDOWN 10 9 12 11 6 5 8 7 2 1 4 3 23 22 21 20 19 18 17 16 15 14 13 24 R6 100 ...

  • Texas Instruments TPA0202 - page 21

    The TP A0202 Audio Power Amplifier Evaluation Module 3-5 Details Figure 3–4. TP A0202 Amplifier IC MUX MUX SE/BTL MUX The IC includes two separate amplifier channels, each of which can operate in either the bridged-tied load (BTL) mode or the single-ended mode as selected by the SE/BTL pin. In the BTL mode, the two output lines of each channel op ...

  • Texas Instruments TPA0202 - page 22

    The TP A0202 Audio Power Amplifier Evaluation Module 3-6 Details 3.2.4 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 - µ F electrolytic coupling c ...

  • Texas Instruments TPA0202 - page 23

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-7 Details 3.3 Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform The TP A0202 Audio Amplifier Evaluation Module was designed to be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform. It simply plugs into socket U2. The following paragraphs provide additiona ...

  • Texas Instruments TPA0202 - page 24

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-8 Details 3.3.2 TP A0202 Module Jumper Settings and Switches The TP A0202 EVM is equipped with several pushbutton SPST switches and jumpers that act as SPST switches to allow module operation to be modified to suit various requirements. In the following discussion, setting a jumper t ...

  • Texas Instruments TPA0202 - page 25

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-9 Details 3.3.2.1 S1 — Shutdown Jumper T o have the module amplifier IC enter the shutdown mode when the module mute control input is activated, set shutdown jumper S1 to ON. The mute control output pin on the TP A0202 amplifier IC follows the mute control input pin and is buffered ...

  • Texas Instruments TPA0202 - page 26

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-10 Details 3.3.2.5 S5 — VDD Bridge Jumper Jumper S5 connects the module L V DD power supply line to the RV DD power supply line. When the TP A0202 EVM is plugged into the platform, both VDD supplies are sourced from the same platform power bus, so the state of jumper S5 is irreleva ...

  • Texas Instruments TPA0202 - page 27

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-1 1 Details 3.3.3 Signal Routing Signal flow on the platform is controlled by two signal routing switches, as shown in Figure 3 – 5. Figure 3–6. 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 Headph ...

  • Texas Instruments TPA0202 - page 28

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-12 Details 3.3.4 Mute/Mode The TP A0202 EVM is equipped with a mute control input pin. When this input is tied to V DD , the TP A0202 amplifier IC on the module enters the mute mode and dissipates very little power . When the EVM control input is tied to GND or allowed to float, ampl ...

  • Texas Instruments TPA0202 - page 29

    Using The TP A0202 EVM With the Plug-N-Play Evaluation Platform 3-13 Details 3.3.4.2 Mute/Mode Select (JP6) A 3-pin jumper header (JP6) on the platform, functioning as an 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. T o mute the TP A0202 a ...

  • Texas Instruments TPA0202 - page 30

    Power Requirements 3-14 Details 3.3.5 Power Requirements The TP A0202 Audio Power Amplifier Evaluation Module can operate from any voltage between approximately 3 V and 5.5 V ; however , the TP A0202 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 m ...

  • Texas Instruments TPA0202 - page 31

    Inputs and Outputs 3-15 Details 3.3.6 Inputs and Outputs The TI Plug-N-Play Audio Amplifier Evaluation Platform is equipped with several standard conectors for audio inputs and outputs. 3.3.6.1 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 TPA0202 - page 32

    Using The TP A0202 EVM Stand-Alone 3-16 Details 3.4 Using The TP A0202 EVM Stand-Alone Using the TP A0202 Audio Power Amplifier Evaluation Module stand-alone is much the same as using it with the platform. The same 3-V to 5.5-V power supply range and the isolated OUT+ and OUT– lines for BTL operation requirement exists. Note that the mute signal ...

  • Texas Instruments TPA0202 - page 33

    Using The TP A0202 EVM Stand-Alone 3-17 Details 3.4.2 TP A0202 EVM Connected for Single-Ended Output Figure 3–10. TP A0202 EVM Connected for Stereo Single-Ended Output 5 V 33 µ F – 1000 µ F + + 33 µ F – 1000 µ F Audio Input (Right) Audio Input (Left) GND ROUT+ HP/L* ROUT– SE/BTL* S7 MUTE GND LOUT– LOUT+ S2 C5 C4 R1 R3 C1 C2 C12 L VDD ...

  • Texas Instruments TPA0202 - page 34

    TP A0202 Audio Power Amplifier Evaluation Module Parts List 3-18 Details 3.5 TP A0202 Audio Power Amplifier Evaluation Module Parts List T able 3–1. TP A0202 EVM Parts List Ref. Description Size EVM Qty . Manufacturer/ Part Number Digi-Key Number C1, C2, C6, C7 Capacitor , 1 µ F, 80%/–20%, nonpolarized 1206 4 Murata GRM42-6Y5V105Z16BL Newark 9 ...

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