Texas Instruments DEM-PCM2912A EVM Evaluation and Measurements

Chapter 4SBAU141 – January 2009

Evaluation and Measurements

This chapter discusses how to set up the DEM-PCM2912A EVM for performance evaluation using theAudio Precision SYS-2722

audio analyzer. The process of measuring dynamic characteristics is thenpresented, along with example characteristic data.

Topic .................................................................................................. Page

4.1 Measurements for Dynamic Characteristics ................................. 34

4.2 Playback Performance ............................................................... 34

4.3 Recording Performance ............................................................. 36

SBAU141 – January 2009 Evaluation and Measurements 33Submit Documentation Feedback

Contents

Main Page Contents Page Page Page Preface Read This First Page Chapter 1 Description 1.1 IntroductionPCM2912A 1.1.1 Key Features 1.2 Pin Assignments and Terminal Functions PCM2912APJT (TopView) Pin Assignments and Terminal Functions Figure 1-1 shows the pin assignments for the PCM2912A. Table 1-1 lists the terminal functions. Figure 1-1. PCM2912A Pin Assignments Table 1-1. PCM2912A Terminal Functions Table 1-1. PCM2912A Terminal Functions (continued) 1.3 Functional Block Diagram www.ti.com SBAU141 January 2009 Description 13Submit Documentation Feedback Functional Block Diagram Figure 1-2 illustrates the functional block diagram of the DEM-PCM2912A EVM. Page Chapter 2 Getting Started 2.1 Electrostatic Discharge Warning Electrostatic Discharge Warning 2.2 Block Diagram 2.3 Interface and Connections Chapter 3 Set-Up Guide Page 3.1.2 Volume and Mute Settings Page Page Page Page 3.2.2 Volume Settings Page Page Page Page 3.3.2 Volume Settings 3.3.3 Sampling Frequency Page Page Chapter 4 Evaluation and Measurements 4.1 Measurements for Dynamic Characteristics 4.2 Playback Performance Playback Performance Table 4-1. Line Output Playback Performance Table 4-2. 32- Headphone Output Playback Performance Table 4-3. 16- Headphone Output Playback Performance 4.3 Recording Performance Chapter 5 Schematic, PCB Layout, and Bill of Materials Page Page 5.3 Component List Component List Table 5-1 lists the bill of materials for the DEM-PCM2912A EVM. Table 5-1. Bill of Materials Page Page IMPORTANT NOTICE