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  • PCM2903C Stereo Audio Codec With USB Interface, Single-Ended Analog Input/Output, and S/PDIF

    • SBFS038A June   2012  – September 2015 PCM2903C

      PRODUCTION DATA.  

  • CONTENTS
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  • PCM2903C Stereo Audio Codec With USB Interface, Single-Ended Analog Input/Output, and S/PDIF
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
      1. 7.6.1  Typical Characteristics: ADC
      2. 7.6.2  Typical Characteristics: DAC
      3. 7.6.3  Typical Characteristics: ADC Output Spectrum
      4. 7.6.4  Typical Characteristics: DAC Output Spectrum
      5. 7.6.5  Typical Characteristics: Supply Current
      6. 7.6.6  Typical Characteristics: ADC Digital Decimation Filter Frequency Response
      7. 7.6.7  Typical Characteristics: ADC Digital High-Pass Filter Frequency Response
      8. 7.6.8  Typical Characteristics: ADC Analog Antialiasing Filter Frequency Response
      9. 7.6.9  Typical Characteristics: DAC Digital Interpolation Filter Frequency Response
      10. 7.6.10 Typical Characteristics: DAC Analog Fir Filter Frequency Response
      11. 7.6.11 Typical Characteristics: DAC Analog Low-Pass Filter Frequency Response
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 End-Points
      2. 9.3.2 Clock and Reset
      3. 9.3.3 Digital Audio Interface
      4. 9.3.4 Supported Input/Output Data
      5. 9.3.5 Channel Status Information
      6. 9.3.6 Copyright Management
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
      1. 9.5.1 USB Interface
      2. 9.5.2 Device Configuration
        1. 9.5.2.1 Interface Number 0
        2. 9.5.2.2 Interface Number 1
        3. 9.5.2.3 Interface Number 2
        4. 9.5.2.4 Interface Number 3
      3. 9.5.3 Interface Sequence
        1. 9.5.3.1 Power On, Attach, and Playback Sequence
        2. 9.5.3.2 Play, Stop, and Detach Sequence
        3. 9.5.3.3 Record Sequence
        4. 9.5.3.4 Suspend and Resume Sequence
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information
  15. IMPORTANT NOTICE

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
  • DB|28
    • MPDS510A
サーマルパッド・メカニカル・データ
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  • sbfs038a_pm
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DATA SHEET

PCM2903C Stereo Audio Codec With USB Interface, Single-Ended Analog Input/Output, and S/PDIF

1 Features

  • On-Chip USB Interface:
    • With Full-Speed Transceivers
    • Fully Compliant With USB 2.0 Specification
    • Certified by USB-IF
    • USB Adaptive Mode for Playback
    • USB Asynchronous Mode for Record
    • Self-Powered
  • 16-Bit Delta-Sigma ADC and DAC
  • Sampling Rates:
    • DAC: 32, 44.1, 48 kHz
    • ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
  • On-Chip Clock Generator With Single 12-MHz Clock Source
  • S/PDIF Input/Output
  • Single Power Supply:
    • 3.3 V Typical
  • Stereo ADC:
    • Analog Performance at VCCC = VCCP1 = VCCP2 = VCCX = VDD = 3.3 V:
      • THD+N = 0.01%
      • SNR = 89 dB
      • Dynamic Range = 89 dB
    • Decimation Digital Filter:
      • Passband Ripple = ±0.05 dB
      • Stop-Band Attenuation = –65 dB
    • Single-Ended Voltage Input
    • Antialiasing Filter Included
    • Digital HPF Included
  • Stereo DAC:
    • Analog Performance at VCCC = VCCP1 = VCCP2 = VCCX = VDD = 3.3 V:
      • THD+N = 0.005%
      • SNR = 96 dB
      • Dynamic Range = 93 dB
    • Oversampling Digital Filter:
      • Passband Ripple = ±0.1 dB
      • Stop-Band Attenuation = –43 dB
    • Single-Ended Voltage Output
    • Analog LPF Included
  • Multifunctions:
    • Human Interface Device (HID) Function:
      • Volume and Mute Controls
    • Suspend Flag Function
  • 28-Pin SSOP Package

2 Applications

  • USB Audio Speaker
  • USB Headset
  • USB Monitor
  • USB Audio Interface Box

3 Description

The PCM2903C is TI's single-chip, USB, stereo audio codec with a USB-compliant full-speed protocol controller and S/PDIF. The USB protocol controller requires no software code. The PCM2903C employs SpAct™ architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback and record with low clock jitter, as well as independent playback and record sampling rates.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
PCM2903C SSOP (28) 10.20 mm × 5.30 mm
  1. For all available packages, see the orderable addendum at the end of the datas heet.

Simplified Diagram

PCM2903C block_diagram.gif

4 Revision History

Changes from * Revision (June 2011) to A Revision

  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
  • Removed Package/Ordering Information table Go

5 Device Comparison Table

PCM2900C PCM2902C PCM2903C PCM2906C
Supply Voltage 5 V (Bus-Powered) 5 V (Bus-Powered) 3.3 V (Self-Powered) 5 V (Bus-Powered)
Additional Features — S/PDIF I/O S/PDIF I/O S/PDIF I/O
500 mA Max Power Configuration

6 Pin Configuration and Functions

DB Package
28-Pin SSOP
Top View
PCM2903C pinout_bfs038.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
AGNDC 11 – Analog ground for codec
AGNDP 18 – Analog ground for PLL
AGNDX 22 – Analog ground for oscillator
D– 2 I/O USB differential input/output minus(1)
D+ 1 I/O USB differential input/output plus(1)
DGND 26 – Digital ground
DGNDU 4 – Digital ground for USB transceiver
DIN 24 I S/PDIF input (2)
DOUT 25 O S/PDIF output
HID0 5 I HID key state input (mute), active-high(3)
HID1 6 I HID key state input (volume up), active-high(3)
HID2 7 I HID key state input (volume down), active-high(3)
SEL0 8 I Must be set to high(4)
SEL1 9 I Connected to the USB port of VBUS(4)
SSPND 28 O Suspend flag, active-low (Low: suspend, High: operational)
VBUS 3 – Must be connected to VDD
VCCC 10 – Analog power supply for codec(5)
VCCP1 17 – Analog power supply for PLL(5)
VCCP2 19 – Analog power supply for PLL(5)
VCCX 23 – Analog power supply for oscillator(5)
VCOM 14 – Common for ADC/DAC (VCCC/2) (5)
VDD 27 – Digital power supply(5)
VINL 12 I ADC analog input for L-channel
VINR 13 I ADC analog input for R-channel
VOUTL 16 O DAC analog output for L-channel
VOUTR 15 O DAC analog output for R-channel
XTI 21 I Crystal oscillator input(6)
XTO 20 O Crystal oscillator output
(1) LV-TTL level.
(2) 3.3-V CMOS-level input with internal pulldown, 5-V tolerant.
(3) 3.3-V CMOS-level input with internal pulldown. This pin informs the PC of serviceable control signals such as mute, volume up, or volume down, which have no direct connection with the internal DAC or ADC. See the Interface Number 3 and End-Points sections.
(4) TTL Schmitt trigger, 5-V tolerant.
(5) Connect a decoupling capacitor to GND.
(6) 3.3-V CMOS-level input.

 
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