PCM2900C

Manufacturer Part NumberPCM2900C
DescriptionThe PCM2900C/2902C are Texas Instruments' single-chip, USB, stereo audio codecs with a USB-compliant full-speed protocol controller and S/PDIF (PCM2902C only)
ManufacturerTexas Instruments
PCM2900C datasheet
 


Specifications of PCM2900C

Snr Dac / Snr Adc(typ)(db)96 / 89# Dacs / # Adcs2 / 2
# Inputs / # Outputs2 / 2Sampling Rate(max)(khz)48
Resolution(bits)16Control InterfaceHID
Supply Voltage(s)(v)5Pd(typ)(mw)280
Operating Temperature Range(c)-25 to 85Pin/package28SSOP
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Burr-Brown Audio
www.ti.com
Stereo Audio Codec with USB Interface,
Single-Ended Analog Input/Output, and S/PDIF
FEATURES
1
• PCM2900C: Without S/PDIF
234
PCM2902C: With S/PDIF
On-Chip USB Interface:
– With Full-Speed Transceivers
– Fully Compliant with USB 2.0 Specification
– Certified by USB-IF
– Partially Programmable Descriptors
– USB Adaptive Mode for Playback
– USB Asynchronous Mode for Record
– Bus Powered
16-Bit Delta-Sigma ADC and DAC
Sampling Rate:
– DAC: 32 kHz, 44.1 kHz, 48 kHz
– ADC: 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz,
32 kHz, 44.1 kHz, 48 kHz
On-Chip Clock Generator with Single 12-MHz
Clock Source
Single Power Supply:
– 5 V Typical (V
)
BUS
Stereo ADC:
– Analog Performance at 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
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SpAct is a trademark of Texas Instruments.
2
System Two, Audio Precision are trademarks of Audio Precision, Inc.
3
All other trademarks are the property of their respective owners.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Check for Samples: PCM2900C,
PCM2902C
Stereo DAC:
– Analog Performance at 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
APPLICATIONS
USB Audio Speaker
USB Headset
USB Monitor
USB Audio Interface Box
= 5 V:
BUS
DESCRIPTION
The
PCM2900C/2902C
single-chip, USB, stereo audio codecs with a
USB-compliant full-speed protocol controller and
S/PDIF
controller
PCM2900C/2902C employ SpAct™ architecture, TI's
unique system that recovers the audio clock from
USB packet data. On-chip analog PLLs with SpAct
architecture enable playback and record with low
clock jitter as well as independent playback and
record sampling rates.
PCM2900C
PCM2902C
SBFS039 – SEPTEMBER 2011
= 5 V:
BUS
are
Texas
Instruments'
(PCM2902C
only).
The
USB
requires
no
software
code.
Copyright © 2011, Texas Instruments Incorporated
protocol
The

PCM2900C Summary of contents

  • Page 1

    ... USB, stereo audio codecs with a USB-compliant full-speed protocol controller and S/PDIF controller PCM2900C/2902C employ SpAct™ architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct architecture enable playback and record with low clock jitter as well as independent playback and record sampling rates ...

  • Page 2

    ... Exposure to absolute-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. THERMAL INFORMATION THERMAL METRIC θ ...

  • Page 3

    ... Apply USB Revision 2.0, full speed USB isochronous data format – – Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PCM2900C, PCM2902C MIN TYP MAX UNIT 2 3.3 VDC 2.52 3.3 VDC 2 5.25 VDC 2.52 5.25 VDC ...

  • Page 4

    ... IN –3 dB (as shown in Table 7 and Figure 37, using with REG103xA-A). (as shown in Figure 38 and Figure 39). Product Folder Link(s): PCM2900C PCM2902C www.ti.com PCM2900C, PCM2902C MIN TYP MAX UNIT 8, 16 Bits 1, 2 Channel 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz % of ±1 ±5 FSR % of ±2 ±10 ...

  • Page 5

    ... OUT EIAJ, A-weighted EIAJ, A-weighted AC coupling – kHz ADC, DAC operation (5) Suspend mode ADC, DAC operation (5) Suspend mode Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PCM2900C, PCM2902C MIN TYP MAX UNIT 8, 16 Bits 1, 2 Channel 32, 44.1, 48 ...

  • Page 6

    ... PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 Table 1. PCM2900C TERMINAL FUNCTIONS TERMINAL NAME NO. I/O 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 D+ 1 I/O USB differential input/output plus DGND 26 – ...

  • Page 7

    ... AGNDC 11 18 AGNDP CCP1I OUT COM OUT DESCRIPTION (1) (1) (3) (3) (3) ) BUS (5) (5) (5) (5) (5) /2) CCCI (6) Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 Interface #3 and End-Points sections. Submit Documentation Feedback 7 ...

  • Page 8

    ... PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PCM2900C FUNCTIONAL BLOCK DIAGRAM CCCI CCP1I CCP2I 5-V to 3.3-V Voltage Regulator TEST0 TEST1 ADC COM V L OUT DAC V R OUT 12 MHz XTI XTO 8 Submit Documentation Feedback V V AGNDC CCXI DDI Power Manager ISO-In ...

  • Page 9

    ... Selector End-Point Analog PLL ISO-Out FIFO End-Point HID End-Point USB Protocol Controller 96 MHz Tracker PLL ( 8) × (SpAct) Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 AGNDP AGNDX DGND DGNDU SSPND V BUS D+ D- SEL0 SEL1 HID0 HID1 HID2 Submit Documentation Feedback ...

  • Page 10

    ... PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PCM2900C/2902C DIAGRAM OF ANALOG FRONT-END (RIGHT CHANNEL) 4 COM 14 (V /2) + CCCI Submit Documentation Feedback – – Reference Product Folder Link(s): PCM2900C PCM2902C www.ti.com (+) (–) Delta-Sigma Modulator Copyright © 2011, Texas Instruments Incorporated ...

  • Page 11

    ... G003 G005 Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 DYNAMIC RANGE and SNR vs FREE-AIR TEMPERATURE Dynamic Range SNR 100 -25 Free-Air Temperature (°C) Figure 2. DYNAMIC RANGE and SNR vs SUPPLY VOLTAGE ...

  • Page 12

    ... G009 G011 Product Folder Link(s): PCM2900C PCM2902C www.ti.com DYNAMIC RANGE AND SNR vs FREE-AIR TEMPERATURE SNR Dynamic Range 100 -25 Free-Air Temperature (°C) Figure 8. DYNAMIC RANGE AND SNR vs SUPPLY VOLTAGE SNR Dynamic Range 4 ...

  • Page 13

    ... SUSPEND SUPPLY CURRENT vs FREE-AIR TEMPERATURE USB Spec Limit for Device (0.3 mA -40 -20 Free-Air Temperature ( C) ° Figure 15. Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 OPERATIONAL SUPPLY CURRENT vs SAMPLING FREQUENCY ADC and DAC Sampling Frequency (kHz) G014 Figure 14 ...

  • Page 14

    ... G018 = 44.1 kHz kHz, 16-bit data, unless otherwise noted. BUS 0.2 - 0.4 - 0.6 - 0.8 - 1.0 - 0.3 0.4 0 G020 Product Folder Link(s): PCM2900C PCM2902C www.ti.com STOP BAND ATTENUATION 1 0.2 0.4 0.6 0.8 Frequency (× G017 Figure 17. TRANSITION-BAND RESPONSE 0.48 0.5 0.52 0.54 Frequency (× G019 Figure 19. PASSBAND CHARACTERISTICS Frequency (× f /1000) ...

  • Page 15

    ... G024 TRANSITION-BAND RESPONSE 0.46 0.47 0.48 0.49 0.5 0.51 0.52 Frequency (× Figure 26. Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PASSBAND CHARACTERISTICS 0 100 Frequency (kHz) Figure 23. PASSBAND RIPPLE 0.1 0.2 0.3 0.4 0.5 Frequency (× Figure 25. 0.53 0.54 G026 Submit Documentation Feedback G023 G025 ...

  • Page 16

    ... BUS 0.2 - 0.4 - 0.6 - 0 10k 0.01 G029 Product Folder Link(s): PCM2900C PCM2902C www.ti.com PASSBAND CHARACTERISTICS 0.1 0.2 0.3 0.4 0.5 Frequency (× G028 Figure 28. PASSBAND CHARACTERISTICS 0 100 Frequency (kHz) G030 Figure 30. Copyright © 2011, Texas Instruments Incorporated ...

  • Page 17

    ... USB INTERFACE Control data and audio data are transferred to the PCM2900C/2902C via D+ (pin 1) and D– (pin 2). All data to/from the PCM2900C/2902C are transferred at full speed. The device descriptor contains the information described in Table 3. USB revision Device class Device subclass ...

  • Page 18

    ... PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 DEVICE CONFIGURATION Figure 31 illustrates the USB audio function topology. The PCM2900C/2902C has four interfaces. Each interface consists of alternative settings. End-Point #0 Default End-Point End-Point #2 (IF #1) Audio Streaming Interface End-Point #4 (IF #2) Audio Streaming Interface End-Point #5 (IF #3) HID Interface Figure 31 ...

  • Page 19

    ... Interface #0 is defined as the control interface. Alternative setting #0 is the only possible setting for interface #0. Alternative setting #0 describes the standard audio control interface. The audio control interface consists of a single terminal. The PCM2900C/2902C has five terminals: • Input terminal (IT #1) for isochronous-out stream • ...

  • Page 20

    ... The control end-point is a default end-point. The control end-point is used to control all functions of the PCM2900C/2902C by a standard USB request and an USB audio class-specific request from the host. The isochronous-out audio data stream end-point is an audio sink end-point, which receives the PCM audio data. The isochronous-out audio data stream end-point accepts the adaptive transfer mode ...

  • Page 21

    ... Clock and Reset The PCM2900C/2902C requires a 12-MHz (±500 ppm) clock for the USB and audio functions, which can be generated by a built-in crystal oscillator with a 12-MHz crystal resonator. The 12-MHz crystal resonator must be connected to XTI (pin 21) and XTO (pin 20) with one high (1-MΩ) resistor and two small capacitors, the capacitance of which depends on the load capacitance of the crystal resonator ...

  • Page 22

    ... INTERFACE SEQUENCE Power On, Attach, and Playback Sequence The PCM2900C/2902C is ready for setup when the reset sequence has finished and the USB bus is attached. After connection has been established by setup, the PCM2900C/2902C is ready to accept USB audio data. While waiting, the audio data (idle state) and analog output are set to bipolar zero (BPZ). ...

  • Page 23

    ... Suspend and Resume Sequence The PCM2900C/2902C enters the suspend state after it sees a constant idle state on the USB bus (approximately 5 ms), as shown in flag (pin 28) is asserted. The PCM2900C/2902C wakes up immediately upon detecting a non-idle state on the USB bus. D+/D- SSPND ...

  • Page 24

    ... PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PCM2900C TYPICAL CIRCUIT CONNECTION 1 Figure 36 illustrates a typical circuit connection for a high-performance application. The circuit illustrated is for information only. The entire board design should be considered to meet the USB specification as a USB-compliant product. 1 × 2 ...

  • Page 25

    ... AGNDC AGNDP CCP1I OUT COM OUT + ≤ 2 μ Product Folder Link(s): PCM2900C PCM2902C PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 DDI 26 25 DIN CCXI XTI ...

  • Page 26

    ... PCM2900C PCM2902C SBFS039 – SEPTEMBER 2011 PCM2900C TYPICAL CIRCUIT CONNECTION 2 Figure 38 illustrates a typical circuit connection for a simple application. The circuit illustrated is for information only. The entire board design should be considered to meet the USB specification as a USB-compliant product. 1 × 2 ...

  • Page 27

    ... In this case, the analog performance of the ADC may be degraded. OPERATING ENVIRONMENT For current information on the PCM2900C/2902C operating environment, see the application report, Updated Operating Environments for PCM270X, PCM290X Applications (SLAA374), available for download from the website. Copyright © 2011, Texas Instruments Incorporated ...

  • Page 28

    ... PACKAGING INFORMATION Orderable Device (1) Package Type Package Status PCM2900CDB ACTIVE SSOP PCM2900CDBR ACTIVE SSOP PCM2902CDB ACTIVE SSOP PCM2902CDBR ACTIVE SSOP (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. ...

  • Page 29

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing PCM2900CDBR SSOP DB PCM2902CDBR SSOP DB PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 28 2000 330.0 16.4 8.2 28 2000 330.0 16.4 8.2 Pack Materials-Page 1 12-Dec-2011 Pin1 (mm) ...

  • Page 30

    ... Device Package Type PCM2900CDBR SSOP PCM2902CDBR SSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2000 DB 28 2000 Pack Materials-Page 2 12-Dec-2011 Width (mm) Height (mm) 346.0 346.0 33.0 346.0 346.0 33.0 ...

  • Page 31

    DB (R-PDSO-G**) 28 PINS SHOWN 0, 2,00 MAX PINS ** DIM A MAX A MIN NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not ...

  • Page 32

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...