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February 2002 Mixed Signal Products User ’ s Guide SLOU121.
IMPORT ANT NOTICE T exas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
EVM IMPORT ANT NOTICE T exas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EV ALUA TION PURPOSES ONL Y and is not considered by TI to be fit for commercial use.
EVM W ARNINGS AND RESTRICTIONS It is important to operate this EVM within the specified input and output ranges described in the EVM User ’ s Guide. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM.
Information About Cautions and Warnings v Preface Read This First How to Use This Manual This document contains the following chapters: - Chapter 1 — Introduction - Chapter 2 — Quick Start - Chapter 3 — Details - Chapter 4 — Reference Information About Cautions and Warnings This book may contain cautions and warnings.
Related Documentation From T exas Instruments vi Related Documentation From T exas Instruments - TI Plug-N-Play Audio Amplifier Evaluation Platform (literature number SLOU01 1) provides detailed infor.
Contents vii Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 . . . . . . . . . . . . . . . . . . . . . . .
Contents viii Figures 1 – 1 The TI TP A601 1A4 Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1 Introduction This chapter provides an overview of the T exas Instruments (TI) TP A601 1A4 audio amplifier evaluation module (SLOP389). It includes a list of EVM features, a brief illustrated description of the module, and a list of EVM specifications.
Feature Highlights 1-2 Introduction 1.1 Feature Highlights The TI TP A601 1A4 audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following feature.
Description 1-3 Introduction 1.2 Description The TP A601 1A4 stereo 2-W audio power amplifier evaluation module is a complete, 2-W per channel stereo audio power amplifier with dc volume control.
1-4 Introduction.
2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TP A601 1A4 audio amplifier EVM for use. Using the TP A601 1A4 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.
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.
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TP A601 1A4 EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user ’ s guide, SLOU01 1, for additional details).
Quick Start List for Platform 2-4 Quick Start Figure 2 – 2. Module Preparation 13 11 12 16 17 18 19 14 T able 2 – 4. T ypical TP A601 1A4 EVM Jumper Settings EVM J1 J2 J3 J4 TP A601 1A4 OFF OFF ON.
Quick Start List for Stand-Alone 2-5 Quick Start 17) Adjust the SE (headphone) volume by adjusting potentiometer R6. T urn- ing R6 in the clockwise direction decreases the voltage on the SEDIFF ter- minal and the SE gain increases. T urning R6 in the counter clockwise di- rection increases the SEDIFF voltage and decreases the SE volume.
Quick Start List for Stand-Alone 2-6 Quick Start can be used with a differential or single-ended audio source, but the headphone and line have common positive inputs.
Quick Start List for Stand-Alone 2-7 Quick Start of the EVM is provided to monitor the dc voltage. See T able 3 – 1 for gain settings. 12) Adjust the SE (headphone) volume by adjusting potentiometer R6. T urning R6 in the clockwise direction decreases the voltage on the SEDIFF terminal and the SE gain increases.
2-8 Quick Start.
3-1 Details Details This chapter provides details on the TP A601 1A4 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TP A601 1A4 evaluation module. T opic Page 3.1 Precautions 3 – 2 .
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.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TP A601 1A4 Audio Power Amplifier Evaluation Module The TP A601 1A4 audio power amplifier evaluation module is powered by a TP A601 1A4 stereo power amplifier capable of delivering greater than 2 W of continuous power per channel into 3- Ω loads.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-4 Details Figure 3 – 3. TP A601 1A4 EVM Schematic Diagram PGND ROUT – PV DD RHPIN RLINEIN RIN V DD LIN LLINEIN LHPIN PV DD LOUT – 1 ROUT.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-5 Details In the single-ended mode, the headphone inputs are automatically selected and the speaker load is connected between the OUT+ terminal, through an output coupling capacitor , to system ground.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-6 Details SEDIFF and SEMAX pins control the singe-ended gain proportional to the gain set by the voltage on the VOLUME pin. When SEDIFF = 0 V , the difference between the BTL gain and the SE gain is 6 dB.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-7 Details T able 3 – 1. DC V olume Control (BTL Mode, V DD = 5 V) VOLUME (PIN 21) GAIN OF AMPLIFIER FROM (V) TO (V) GAIN OF AMPLIFIER (dB) 0.00 0.26 – 85 0.33 0.37 – 40 0.44 0.48 – 38 0.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-8 Details T able 3 – 2. DC V olume Control (SE Mode, V DD = 5 V) SE_VOLUME(V) = VOLUME(V) – SEDIFF(V) or SEMAX(V) GAIN OF AMPLIFIER FROM (V) TO (V) GAIN OF AMPLIFIER (dB) 0.00 0.26 – 85 0.
The TP A601 1A4 Audio Power Amplifier Evaluation Module 3-9 Details 3.2.5 Depop Circuitry The TP A601 1A4 amplifier IC contains internal circuitry to minimize the various transients that might appear at the output during the transition from power off or shutdown to normal operation, or when transitioning between the SE and BTL modes.
Using the TP A601 1A4 EVM With the Plug-N-Play Evaluation Platform 3-10 Details 3.3 Using the TP A601 1A4 EVM With the Plug-N-Play Evaluation Platform The TP A601 1A4 audio amplifier evaluation module was designed to be used with the TI plug-n-play audio amplifier evaluation platform.
Using the TP A601 1A4 EVM With the Plug-N-Play Evaluation Platform 3-1 1 Details Figure 3 – 6. TP A601 1A4 EVM Jumpers and Switches PGND ROUT – PV DD RHPIN RLINEIN RIN V DD LIN LLINEIN LHPIN PV DD.
Using the TP A601 1A4 EVM With the Plug-N-Play Evaluation Platform 3-12 Details 3.3.2.3 J2 — Input Mode Jumper T o force the module amplifier IC to use the HP input regardless of the module control input state, set jumper J2 to ON.
Using the TP A601 1A4 EVM With the Plug-N-Play Evaluation Platform 3-13 Details 3.3.3.1 Signal Conditioning The audio signal from the input jacks can be applied to the signal conditioning socket (U1) if an EVM is installed there, or socket U1 can be bypassed and the audio input signal applied directly to the inputs of the TP A601 1A4.
Using the TP A601 1A4 EVM With the Plug-N-Play Evaluation Platform 3-14 Details output mode. When the mode control input is tied to GND, the module operates in the BTL output mode. When this input is tied to V DD , the module operates in the single-ended output mode.
Power Requirements 3-15 Details - When JP6 is set to mode, use the following JP8 settings for the TP A601 1A4: J T o switch the TP A601 1A4 amplifier module to the single-ended output mode when a plug is inserted into the headphone jack, jumper JP8 to Hi (this is the typical setting).
Inputs and Outputs 3-16 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.
Using the TP A601 1A4 EVM Stand-Alone 3-17 Details 3.4 Using the TP A601 1A4 EVM Stand-Alone Using the TP A601 1A4 audio power amplifier evaluation module stand-alone is much the same as using it with the platform. The same 4.5-V to 5.5-V power supply range and the isolated OUT+ and OUT – lines for BTL operation requirement exists.
Using the TP A601 1A4 EVM Stand-Alone 3-18 Details 3.4.2 TP A601 1A4 EVM Connected for Single-Ended Output Figure 3 – 1 1. TP A601 1A4 EVM Connected for Stereo Single-Ended Output + + Audio Input (Right) Audio Input (Left) 5 V 33 µ F – 1000 µ F 33 µ F – 1000 µ F T able 3 – 4.
4-1 Reference Reference The TP A601 1A4 EVM board layers, board schematic, and parts list are pres- ented in this chapter . T opic Page 4.1 TP A601 1A4 EVM Layers and Board Schematic 4-2 . . . . . . . . . . . . . . . . . . 4.2 TP A601 1A4 EVM Parts List 4-4 .
TP A601 1A4 EVM Layers and Board Schematic 4-2 Reference 4.1 TP A601 1A4 EVM Layers and Board Schematic Figure 4 – 1. TP A0601 1A4 EVM T op View Figure 4 – 2.
TP A601 1A4 EVM Layers and Board Schematic 4-3 Reference Figure 4 – 3. TP A0601 1A4 EVM Schematic Diagram PGND ROUT – PV DD RHPIN RLINEIN RIN V DD LIN LLINEIN LHPIN PV DD LOUT – 1 ROUT+ SE/BTL H.
TP A601 1A4 EVM Parts List 4-4 Reference 4.2 TP A601 1A4 EVM Parts List T able 4 – 1. TP A601 1A4 EVM Parts List Reference Description Size EVM Qty .
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