JAJSDI7B July   2017  – October 2018 TAS2505-Q1

PRODUCTION DATA.  

  1. 特長
  2. アプリケーション
  3. 概要
    1.     ブロック概略図
  4. 改訂履歴
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  I2S/LJF/RJF Timing in Master Mode
    7. 6.7  I2S/LJF/RJF Timing in Slave Mode
    8. 6.8  DSP Timing in Master Mode
    9. 6.9  DSP Timing in Slave Mode
    10. 6.10 I2C Interface Timing
    11. 6.11 SPI Interface Timing
    12. 6.12 Typical Characteristics
      1. 6.12.1 Class D Speaker Driver Performance
      2. 6.12.2 HP Driver Performance
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Audio Analog I/O
      2. 8.3.2 Audio DAC and Audio Analog Outputs
      3. 8.3.3 DAC
      4. 8.3.4 POR
      5. 8.3.5 CLOCK Generation and PLL
      6. 8.3.6 Speaker Driver
      7. 8.3.7 Automotive Diagnostics
    4. 8.4 Device Functional Modes
      1. 8.4.1 Digital Pins
      2. 8.4.2 Analog Pins
      3. 8.4.3 Multifunction Pins
      4. 8.4.4 Analog Signals
        1. 8.4.4.1 Analog Inputs AINL and AINR
      5. 8.4.5 DAC Processing Blocks — Overview
      6. 8.4.6 Digital Mixing and Routing
      7. 8.4.7 Analog Audio Routing
      8. 8.4.8 5V LDO
      9. 8.4.9 Digital Audio and Control Interface
        1. 8.4.9.1 Digital Audio Interface
        2. 8.4.9.2 Control Interface
          1. 8.4.9.2.1 I2C Control Mode
          2. 8.4.9.2.2 SPI Digital Interface
        3. 8.4.9.3 Device Special Functions
    5. 8.5 Register Map
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Typical Configuration
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Circuit Configuration With Internal LDO
        1. 9.2.2.1 Design Requirements
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Pad
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントのサポート
      1. 12.1.1 関連資料
    2. 12.2 ドキュメントの更新通知を受け取る方法
    3. 12.3 コミュニティ・リソース
    4. 12.4 商標
    5. 12.5 静電気放電に関する注意事項
    6. 12.6 Glossary
  13. 13メカニカル、パッケージ、および注文情報

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ(パッケージ|ピン)
  • RGE|24
サーマルパッド・メカニカル・データ
発注情報

5V LDO

The TAS2505-Q1 has a built-in LDO which can generate the analog supply (AVDD) also the digital supply (DVDD) from input voltage range of 2.7 V to 5.5 V with high PSRR. If combined power supply current is 50 mA or less, then this LDO can deliver power to both analog and digital power supplies. If the only speaker power supply is present and LDO Select pin is enabled, the LDO can power up without requiring other supplies. This LDO requires a minimum dropout voltage of 300 mV and can support load currents up to 50 mA. For stability reasons the LDO requires a minimum decoupling capacitor of 1 µF (±50%) on the analog supply (AVDD) pin and the digital supply (DVDD) pin. If use this LDO output voltage for the digital supply (DVDD) pin, the analog supply (AVDD) pin connected to the digital supply (DVDD) externally is required.

The LDO is by default powered down for low sleep mode currents and can be enabled driving the LDO_SELECT pin to SPKVDD (speaker power supply). When the LDO is disabled the AVDD pin is tri-stated and the device AVDD needs to be powered using external supply. In that case the DVDD pin is also tri-stated and the device DVDD needs to be powered using external supply. The output voltage of this LDO can be adjusted to a few different values as given in the Table 3.

Table 3. AVDD LDO Settings

Page-1, Register 2, D(5:4) LDO Output
00 1.8 V
01 1.6 V
10 1.7 V
00 1.5 V

For more detailed information see the TAS2505 Application Reference Guide (SLAU472).