SBAU141A January   2009  – April 2024 PCM2912A

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Pin Assignments and Terminal Functions
    2. 2.2 Interface and Connections
  9. 3Software
    1. 3.1 Software Setup Guide
      1. 3.1.1 Basic Operating Setup for Windows 10
        1. 3.1.1.1 Basic Setup Before Evaluation
        2. 3.1.1.2 Volume and Mute Settings
        3. 3.1.1.3 Sampling Frequency
      2. 3.1.2 Basic Operating Setup for Mac OS
        1. 3.1.2.1 Basic Setup Before Evaluation
        2. 3.1.2.2 Volume Settings
        3. 3.1.2.3 Sampling Frequency
  10. 4Implementation Results
    1. 4.1 Evaluation Setup
    2. 4.2 Performance Data and Results
      1. 4.2.1 Measurements for Dynamic Characteristics
      2. 4.2.2 Playback Performance
      3. 4.2.3 Recording Performance
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Related Documentation
  14. 8Revision History

Playback Performance

The DEM-PCM2912A EVM performance presented in this section was obtained under the following conditions:

  • fS = 44.1 kHz
  • Output PGA (Speaker output volume): 0 dB
  • Sidetone from microphone PGA: –76 dB (mute)
  • RL = 10 kΩ / 32 Ω / 16 Ω are inserted into headphone jack J2 for headphone output
  • Jumper setting: S1-2 to 100 mA (ON) and S1-3 to 0 dB (ON)
  • Application software for playback: Sound Recorder, Media Player and iTunes® for Windows Vista®/XP; QuickTime® and iTunes® for Mac OS X®.
  • Equipment: AP2 Analog Analyzer (SYS-2722)

Configure the equipment as shown in Figure 5-1.

GUID-383B15B7-798E-4A51-8DEE-4A95BC1B48BC-low.gifFigure 4-1 DEM-PCM2912A EVM Configuration for Playback Performance Measurement
Table 4-1 Line Output Playback Performance
Power Supply Performance Filter Setting RL VOUTL VOUTR
5.0 V THD+N (0 dBFS at 1 kHz) 400 Hz to 20 kHz Pre-Anlr 10 kΩ 0.0086% 0.0085%
SNR (BPZ input) 400 Hz to 20 kHz Pre-Anlr
+ A-weighting
10 kΩ 92.1 dB 92.1 dB
DR (–60 dBFS input) 400 Hz to 20 kHz Pre-Anlr
+ A-weighting
10 kΩ 90.3 dB 90.5 dB
Channel Separation
(BPZ input for target channel)
400 Hz to 20 kHz Pre-Anlr 10 kΩ 89.3 dB 89.3 dB
Table 4-2 32-Ω Headphone Output Playback Performance
Power SupplyPerformanceFilter SettingRLVOUTLVOUTR
5.0 VTHD+N (0 dBFS at 1 kHz)400 Hz to 20 kHz Pre-Anlr32 Ω0.026%0.025%
SNR (BPZ input)400 Hz to 20 kHz Pre-Anlr
+ A-weighting
32 Ω92.1 dB92.1 dB
DR (–60 dBFS input)400 Hz to 20 kHz Pre-Anlr
+ A-weighting
32 Ω89.4 dB89.4 dB
Table 4-3 16-Ω Headphone Output Playback Performance
Power SupplyPerformanceFilter SettingRLVOUTLVOUTR
5.0 VTHD+N (0 dBFS at 1 kHz)400 Hz to 20 kHz Pre-Anlr16 Ω0.044%0.042%
SNR (BPZ input)400 Hz to 20 kHz Pre-Anlr
+ A-weighting
16 Ω92.1 dB92.1 dB
DR (–60 dBFS input)400 Hz to 20 kHz Pre-Anlr
+ A-weighting
16 Ω89.4 dB89.3 dB