SBFS039 SEPTEMBER 2011 Stereo Audio Codec with Audio PCM2900C PCM2902C SBFS039 –SEPTEMBER 2011 Stereo Audio Codec with USB Interface, Single-EndedAnalog Input/Output, and

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    PCM2900CPCM2902C SBFS039 SEPTEMBER 2011

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

    Check for Samples: PCM2900C, PCM2902C

    1FEATURES Stereo DAC: Analog Performance at VBUS = 5 V:234 PCM2900C: Without S/PDIF

    THD+N = 0.005% PCM2902C: With S/PDIF SNR = 96 dB On-Chip USB Interface: Dynamic Range = 93 dB With Full-Speed Transceivers

    Oversampling Digital Filter: Fully Compliant with USB 2.0 Specification Passband Ripple = 0.1 dB Certified by USB-IF Stop Band Attenuation = 43 dB Partially Programmable Descriptors

    Single-Ended Voltage Output USB Adaptive Mode for Playback Analog LPF Included USB Asynchronous Mode for Record

    Multifunctions: Bus Powered Human Interface Device (HID) Function: 16-Bit Delta-Sigma ADC and DAC

    Volume and Mute Controls Sampling Rate: Suspend Flag Function DAC: 32 kHz, 44.1 kHz, 48 kHz

    28-Pin SSOP Package ADC: 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz,32 kHz, 44.1 kHz, 48 kHz

    APPLICATIONS On-Chip Clock Generator with Single 12-MHzClock Source USB Audio Speaker

    Single Power Supply: USB Headset 5 V Typical (VBUS) USB Monitor

    Stereo ADC: USB Audio Interface Box Analog Performance at VBUS = 5 V:

    DESCRIPTION THD+N = 0.01%The PCM2900C/2902C are Texas Instruments' SNR = 89 dB single-chip, USB, stereo audio codecs with a

    Dynamic Range = 89 dB USB-compliant full-speed protocol controller andS/PDIF (PCM2902C only). The USB protocol Decimation Digital Filter:controller requires no software code. The Passband Ripple = 0.05 dBPCM2900C/2902C employ SpAct architecture, TI's

    Stop Band Attenuation = 65 dB unique system that recovers the audio clock fromUSB packet data. On-chip analog PLLs with SpAct Single-Ended Voltage Inputarchitecture enable playback and record with low Antialiasing Filter Includedclock jitter as well as independent playback and

    Digital HPF Included record sampling rates.


    Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

    2SpAct is a trademark of Texas Instruments.3System Two, Audio Precision are trademarks of Audio Precision, Inc.4All other trademarks are the property of their respective owners.

    PRODUCTION DATA information is current as of publication date. Copyright 2011, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.

  • PCM2900CPCM2902C

    SBFS039 SEPTEMBER 2011

    This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled withappropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

    ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be moresusceptible to damage because very small parametric changes could cause the device not to meet its published specifications.




    PCM2900CDB Rails, 47PCM2900CDB SSOP-28 DB 25C to +85C PCM2900C Tape and Reel,PCM2900CDBR 2000

    PCM2902CDB Rails, 47PCM2902CDB SSOP-28 DB 25C to +85C PCM2902C Tape and Reel,PCM2902CDBR 2000

    (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see thedevice product folder at


    Over operating free-air temperature range (unless otherwise noted).


    VBUS Supply voltage 0.3 to 6.5 VGround voltage differences, AGNDC, AGNDP, AGNDX, DGND, DGNDU 0.1 V

    SEL0, SEL1, TEST0 (DIN) (2) 0.3 to 6.5 VDigital input voltage

    D+, D, HID0, HID1, HID2, XTI, XTO, TEST1 (DOUT) (2), SSPND 0.3 to (VDDI + 0.3) < 4 VVINL, VINR, VCOM, VOUTR, VOUTL 0.3 to (VCCCI + 0.3) < 4 VAnalog input

    voltage VCCCI, VCCP1I, VCCP2I, VCCXI, VDDI 0.3 to 4 VInput current (any pins except supplies) 10 mAAmbient temperature under bias 40 to +125 C

    Tstg Storage temperature 55 to +150 CTJ Junction temperature +150 C

    Package temperature (IR reflow, peak) +250 C

    (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated is not implied. Exposure toabsolute-maximum-rated conditions for extended periods may affect device reliability.

    (2) TEST0 and TEST1 apply to the PCM2900C; DIN and DOUT apply to the PCM2902C.



    28 PINS 28 PINS

    JA Junction-to-ambient thermal resistance 64.5 64.5JCtop Junction-to-case (top) thermal resistance 24.5 24.5JB Junction-to-board thermal resistance 25.4 25.4 C/WJT Junction-to-top characterization parameter 2.0 2.0JB Junction-to-board characterization parameter 25.0 25.0JCbot Junction-to-case (bottom) thermal resistance N/A N/A

    (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

    2 Submit Documentation Feedback Copyright 2011, Texas Instruments Incorporated

    Product Folder Link(s): PCM2900C PCM2902C

  • PCM2900CPCM2902C SBFS039 SEPTEMBER 2011

    ELECTRICAL CHARACTERISTICSAll specifications at TA = +25C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted.

    PCM2900C, PCM2902C



    Host interface Apply USB Revision 2.0, full speed

    Audio data format USB isochronous data format


    D+, D 2 3.3 VDCXTI, HID0, HID1, 2.52 3.3 VDCHigh-level input and HID2VIH voltageSEL0, SEL1 2 5.25 VDC

    DIN (PCM2902C) 2.52 5.25 VDC

    D+, D 0.8 VDCXTI, HID0, HID1, 0.9 VDCLow-level input and HID2VIL voltageSEL0, SEL1 0.8 VDC

    DIN (PCM2902C) 0.9 VDC

    D+, D, XTI, SEL0, 10 ASEL1High-level inputIIH HID0, HID1, and VIN = 3.3 Vvoltage 50 80 AHID2

    DIN (PCM2902C) 65 100 AD+, D, XTI, SEL0, 10 ASEL1

    Low-level inputIIL HID0, HID1, and VIN = 0 Vvoltage 10 AHID2DIN (PCM2902C) 10 A


    D+, D 2.8 VDCHigh-level DOUTVOH IOH = 4 mA 2.8 VDCoutput voltage (PCM2902C)

    SSPND IOH = 2 mA 2.8 VDCD+, D 0.3 VDC

    Low-level output DOUTVOL IOL = 4 mA 0.5 VDCvoltage (PCM2902C)

    SSPND IOL = 2 mA 0.5 VDC


    Input clock frequency, XTI 11.994 12 12.008 MHz

    Copyright 2011, Texas Instruments Incorporated Submit Documentation Feedback 3

    Product Folder Link(s): PCM2900C PCM2902C

  • PCM2900CPCM2902C

    SBFS039 SEPTEMBER 2011

    ELECTRICAL CHARACTERISTICS (continued)All specifications at TA = +25C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted.

    PCM2900C, PCM2902C



    Resolution 8, 16 Bits

    Audio data channel 1, 2 Channel

    ADC Clock Frequency

    fS Sampling frequency 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz

    ADC DC Accuracy

    % ofGain mismatch, channel-to-channel 1 5 FSR% ofGain error 2 10 FSR% ofBipolar zero error 0 FSR

    ADC Dynamic Performance (1)

    VIN = 1 dB (2), VCCCI = 3.67 V 0.01 0.02 %THD+N Total harmonic distortion plus noise VIN = 1 dB (3) 0.1 %

    VIN = 60 dB 5 %Dynamic range A-weighted 81 89 dB

    SNR Signal-to-noise ratio A-weighted 81 89 dB

    Channel separation 80 85 dB

    Analog Input

    Input voltage 0.6 VCCCI VPP

    Center voltage 0.5 VCCCI V

    Input impedance 30 k3 dB 150 kHz

    Antialiasing filter frequency responsefIN = 20 kHz 0.08 dB

    ADC Digital Filter Performance

    Passband 0.454 fS Hz

    Stop band 0.583 fS Hz

    Passband ripple 0.05 dBStop band attenuation 65 dB

    td Delay time 17.4/fS s

    HPF frequency response 3 dB 0.078 fS/1000 Hz

    (1) fIN = 1 kHz, using a System Two audio measurement system by Audio Precision in RMS mode with 20-kHz LPF, 400-Hz HPF incalculation.

    (2) Using external voltage regulator for VCCCI (as shown in Table 7 and Figure 37, using with REG103xA-A).(3) Using internal voltage regulator for VCCCI (as shown in Figure 38 and Figure 39).

    4 Submit Documentation Feedback Copyright 2011, Texas Instruments Incorporated

    Product Folder Link(s): PCM2900C PCM2902C