DEM-PCM2912EVM

Manufacturer Part NumberDEM-PCM2912EVM
DescriptionEVALUATION MODULE FOR PCM2912
ManufacturerTexas Instruments
DEM-PCM2912EVM datasheets
 


Specifications of DEM-PCM2912EVM

Main PurposeAudio, CODECEmbeddedNo
Utilized Ic / PartPCM2912Primary AttributesMono Microphone Input, Stereo Headphone Output, 16-Bit
Secondary AttributesUSB InterfaceDescription/functionAudio CODECs
Operating Supply Voltage5 VProductAudio Modules
Lead Free Status / RoHS StatusLead free / RoHS CompliantFor Use With/related ProductsPCM2912
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Burr Brown Products
from Texas Instruments
AUDIO CODEC WITH USB INTERFACE,
MONO MICROPHONE INPUT AND STEREO HEADPHONE OUTPUT
FEATURES
1
On-Chip USB Interface:
23
– With Full-Speed Transceivers
– Fully Compliant with USB 2.0 Specification
– Certified By USB-IF
– Partially Programmable Descriptors
– Adaptive Isochronous Transfer for
Playback
– Asynchronous Isochronous Transfer for
Record
– Bus Powered
16-Bit Delta-Sigma ADC and DAC
Sampling Rate:
– 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
On-Chip Clock Generator:
– With Single 6-MHz Clock Source
Mono ADC with Microphone Input
– Analog Performance at V
– THD+N: 0.01%
– SNR: 92 dB
– Dynamic Range: 90 dB
– Decimation Digital Filter
– Pass-Band Ripple: ±0.05 dB
– Stop-Band Attenuation: –65 dB
– Single-Ended Voltage Input
– Antialiasing Filter Included
– Digital HPF Included
– Microphone Bias, Microphone Amplifier,
and Input PGA
Stereo DAC With Headphone Output
– Analog Performance at V
– THD+N: 0.01% (R
> 10 kΩ)
L
– THD+N: 0.02% (R
= 32 Ω)
L
– SNR: 92 dB
– Dynamic Range: 90 dB
– PO: 13 mW (R
= 32 Ω)
L
– PO: 25 mW (R
= 16 Ω)
L
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
Audio Precision, System Two are trademarks of Audio Precision, Inc..
3
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.
– Oversampling Digital Filter
– Pass-Band Ripple: ±0.1 dB
– Stop-Band Attenuation: –43 dB
– Single-Ended Voltage Output
– Analog LPF Included
– Sidetone PGA, Output PGA, and HP
Multifunctions:
– Suspend, Playback, and Record Status Flag
– Microphone Amplifier, Mute, and Gain
Control
Pop/Click Noise Free
Single Power Supply: 5 V Typ (V
Package: 32-Pin TQFP
APPLICATIONS
USB Headset
= 5 V:
BUS
USB Headphone
USB Speaker
USB Featured Consumer Audio Product
USB Audio Interface Box
USB Monitor
Video Conference System
DESCRIPTION
The PCM2912 is the Texas Instruments single-chip,
USB stereo audio CODEC with USB 2.0-compliant
full-speed protocol controller and analog front end
(AFE) function for headset application. The USB
protocol controller works with no software code, but
USB descriptors can be modified on request
PCM2912 employs SpAct™ architecture, TI’s unique
= 5.0 V:
BUS
system that recovers the audio clock from USB
packet data. On chip analog PLLs with SpAct enables
independent playback and record sampling rate with
low clock jitters.
(1) The descriptor can be modified by changing a mask; contact
your representative about the details.
PCM2912
SLES216 – FEBRUARY 2008
Amplifier
)
BUS
Copyright © 2008, Texas Instruments Incorporated
(1)
. The

DEM-PCM2912EVM Summary of contents

  • Page 1

    ... Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. SpAct is a trademark of Texas Instruments. 2 Audio Precision, System Two are trademarks of Audio Precision, Inc.. 3 PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty ...

  • Page 2

    ... PCM2912 SLES216 – FEBRUARY 2008 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate 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 more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications ...

  • Page 3

    ... Output noise (1) Pins 3, 4: D–, D+. (2) Pins 8, 23, 24, 27, 28: XTI, MAMP, POWER, TEST1, TEST0 (3) Pin 30: MMUTE (4) Pins 7, 29: XTO, SSPND (5) Pins 31, 32: REC, PLAY. Copyright © 2008, Texas Instruments Incorporated = 44.1 kHz kHz, 16-bit data, unless otherwise noted S IN TEST CONDITIONS Apply USB Revision 2 ...

  • Page 4

    ... PCM2912PJT UNIT MIN TYP MAX 16 Bits 1 channel 8, 11.025, 16, 22.05, 32, 44.1, kHz 48 0.01% 0.02 ±2 ± FSR ± FSR 0.43 V Vp-p CCA 0 CCA 150 kHz –0. kΩ – 0.454 0.583 ±0.02 dB –65 dB 17.4 0.078 f MHz S Copyright © 2008, Texas Instruments Incorporated ...

  • Page 5

    ... Audio Precision ™System Two ™, RMS mode with 20 kHz LPF, 400 Hz HPF. Output attenuator = 0 dB, OUT Sidetone = Mute. (8) MIC Amp = 0 dB, Sidetone attenuator = 0 dB, Output attenuator = 0 dB. Copyright © 2008, Texas Instruments Incorporated = 44.1 kHz kHz, 16-bit data, unless otherwise noted S ...

  • Page 6

    ... Suspend mode 32-pin TQFP , CCR CCP Product Folder Link(s): PCM2912 www.ti.com PCM2912PJT UNIT MIN TYP MAX 0.445 0.555 ±0.1 dB –43 dB 14.3 4.35 5.0 5.25 VDC 85 100 mA 220 300 A 425 500 mW 0 3.3 3.6 VDC – C/W Copyright © 2008, Texas Instruments Incorporated ...

  • Page 7

    ... PIN ASSIGNMENTS PGND V CCP TEST1 TEST0 SSPND MMUTE REC PLAY Copyright © 2008, Texas Instruments Incorporated DEVICE INFORMATION PCM2912 (TOP VIEW PCM2912PJT (32-pin TQFP Product Folder Link(s): PCM2912 PCM2912 SLES216 – FEBRUARY 2008 CCA NC 14 AGND COM2 V 11 COM1 FR 10 ...

  • Page 8

    ... CMOS level input with internal pulldown. ( tolerant, open-drain. 8 Submit Documentation Feedback TERMINAL FUNCTIONS DESCRIPTIONS ) BUS (1) (1) (2) (3) /2). Decouple capacitor should be connected to CCA /2). Decouple capacitor should be connected to AGND. CCA ) CCA (2) (2) (2) (3) (3) Product Folder Link(s): PCM2912 www.ti.com (3) (3) (4) (5) (5) Copyright © 2008, Texas Instruments Incorporated ...

  • Page 9

    ... COM1 ATT – steps with Mute OUT V R OUT S HP AMP 15 mW (@32 W) ATT – steps with Mute FL FR 6.000 MHz XTI Copyright © 2008, Texas Instruments Incorporated BGND CCA CCP CCL CCR 3.3 V Vref. Voltage Regulator FIFO ADC Selector Analog ...

  • Page 10

    ... BUS -20 -40 -60 -80 -100 -12 -16 -20 0.46 0.3 0.4 0.5 S Product Folder Link(s): PCM2912 www.ti.com STOP-BAND ATTENUATION 0.2 0.4 0.6 0.8 Normalized Frequency - Figure 2. TRANSIENT-BAND RESPONSE 0.48 0.50 0.52 0.54 Normalized Frequency - Figure 4. Copyright © 2008, Texas Instruments Incorporated 1 ...

  • Page 11

    ... Normalized Frequency - x f /1000 Figure 5. ADC Analog Antialiasing Filter Frequency Response STOP-BAND CHARACTERISTIC 0 -10 -20 -30 -40 - 100 f - Frequency - kHz Figure 7. Copyright © 2008, Texas Instruments Incorporated = 44.1 kHz kHz, 16-bit data, unless otherwise noted -0.2 -0.4 -0.6 -0 0.3 0 -0.2 -0.4 -0 ...

  • Page 12

    ... S IN 0.2 0 -0.2 -0.4 -0.6 -0 TRANSIENT-BAND RESPONSE 0.46 0.48 0.50 0.52 Normalized Frequency - x f Figure 11. Product Folder Link(s): PCM2912 www.ti.com PASS-BAND RIPPLE 0.1 0.2 0.3 0.4 Normalized Frequency - Figure 10. 0.54 S Copyright © 2008, Texas Instruments Incorporated 0.5 ...

  • Page 13

    ... Normalized Frequency - x f Figure 12. DAC Analog Low-Pass Filter Frequency Response STOP-BAND CHARACTERISTIC 0 -10 -20 -30 -40 - 100 f - Frequency - kHz Figure 14. Copyright © 2008, Texas Instruments Incorporated = 44.1 kHz kHz, 16-bit data, unless otherwise noted 0.2 0 -0.2 -0.4 -0.6 -0 -0.2 -0.4 -0.6 -0 ...

  • Page 14

    ... DYNAMIC RANGE and SNR vs SUPPLY VOLTAGE 5.2 5.4 4.2 Product Folder Link(s): PCM2912 www.ti.com SNR DYNAMIC RANGE - Free-Air Temperature - °C A Figure 17. SNR DYNAMIC RANGE 4.4 4.6 4 Supply Voltage - V BUS Figure 19. Copyright © 2008, Texas Instruments Incorporated 100 5.4 ...

  • Page 15

    ... Figure 20. DAC THD TEMPERATURE 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 -50 - Free-Air Temperature - °C A Figure 22. Copyright © 2008, Texas Instruments Incorporated = 44.1 kHz kHz, 16-bit data, unless otherwise noted DYNAMIC RANGE and SNR vs SAMPLING FREQUENCY DYNAMIC RANGE and SNR vs TEMPERATURE 96 ...

  • Page 16

    ... DYNAMIC RANGE and SNR vs SUPPLY VOLTAGE 4.2 4.4 5 5.2 5.4 DYNAMIC RANGE and SNR vs SAMPLING FREQUENCY Product Folder Link(s): PCM2912 www.ti.com SNR DYNAMIC RANGE 4.6 4.8 5 5.2 5 Supply Voltage - V BUS Figure 25. SNR DYNAMIC RANGE Sampling Frequency - kHz S Figure 27. Copyright © 2008, Texas Instruments Incorporated ...

  • Page 17

    ... V - Supply Voltage - V BUS Figure 28. SUPPLY CURRENT vs TEMPERATURE at SUSPEND MODE 0.40 0.35 0.30 0.25 0.20 0.15 0.10 Copyright © 2008, Texas Instruments Incorporated = 44.1 kHz kHz, 16-bit data, unless otherwise noted SUPPLY CURRENT vs SAMPLING FREQUENCY 0.5 100 0.4 90 0.3 80 0 ...

  • Page 18

    ... Table Not supported Table 2. Configuration Descriptor 3 interfaces 0x80 (Bus powered, no remote wakeup) 0x32 (100 mA at POWER=Low) / 0xFA (500mA at POWER = High) Table 3. String Descriptor 0x0409 Burr-Brown from TI USB audio CODEC Product Folder Link(s): PCM2912 www.ti.com 3) 3) Copyright © 2008, Texas Instruments Incorporated ...

  • Page 19

    ... Output Terminal (Terminal ID#6) for audio analog output Input Terminal (Terminal ID#7) for audio analog input Feature Unit (Unit ID#8) for analog input PGA Mixer Unit (Unit ID#A) for analog input Output Terminal (Terminal ID#B) for isochronous-in stream Copyright © 2008, Texas Instruments Incorporated TID3 ...

  • Page 20

    ... DATA FORMAT Zero band width Mono 2s complement (PCM) Product Folder Link(s): PCM2912 www.ti.com SAMPLING RATE (kHz) 8, 11.025, 16, 22.05, 32, 44.1, Adaptive 48 8, 11.025, 16, 22.05, 32, 44.1, Adaptive 48 TRANSFER MODE SAMPLING RATE (kHz) 8, 11.025, 16, 22.05, 32, Asynchronous 44.1, 48 Copyright © 2008, Texas Instruments Incorporated ...

  • Page 21

    ... The PCM2912 has the microphone bias generator, which provides low-noise, 0.75-V output with appropriate output impedance for electret-microphone driving. This output, MBIAS (pin 17) should be bypassed to AGND (pin 13) through an appropriate capacitor for reducing output noise level. Copyright © 2008, Texas Instruments Incorporated (pin 2). Each regulator has an output pin and BUS ...

  • Page 22

    ... Submit Documentation Feedback pin must be decoupled with an appropriate capacitor. COM (pin 12). The equivalent resistance of V COM2 Side Tone DAC – COM FR/ Figure 32. Filter Circuit Product Folder Link(s): PCM2912 www.ti.com (pin 11) is provided for the COM1 is 500 COM2 Copyright © 2008, Texas Instruments Incorporated ...

  • Page 23

    ... D+(pin 4), D–(pin 3) SSPND(pin 29 (pin 18), OUT V R (pin 22) OUT 700 µs Internal reset Copyright © 2008, Texas Instruments Incorporated Set configuration Bus reset SOF Device setup Ready for setup Ready for playback Figure 33. Initial Sequence Product Folder Link(s): PCM2912 PCM2912 SLES216 – ...

  • Page 24

    ... Submit Documentation Feedback Audio data Last audio data SOF SOF Figure 34. Play, Stop, and Detach IN token Audio data IN token Audio data SOF SOF Figure 35. Record Sequence Product Folder Link(s): PCM2912 www.ti.com SOF Detach IN token Audio data SOF Copyright © 2008, Texas Instruments Incorporated ...

  • Page 25

    ... USB bus. (pin (pin 3) D– (pin 29) SSPND (pin 18), OUT V R (pin 22) OUT Active 2.5 ms Copyright © 2008, Texas Instruments Incorporated Idle Suspend Figure 36. Suspend and Resume Product Folder Link(s): PCM2912 PCM2912 SLES216 – FEBRUARY 2008 Active Submit Documentation Feedback 25 ...

  • Page 26

    ... SSPND 29 MMUTE 30 Mic Mute REC 31 32 PLAY R1 3 BGND C18 C1 PLAY USB Connector V D – D+ GND BUS Figure 37. USB Headset Application NOTE: Product Folder Link(s): PCM2912 www.ti.com Microphone R5 C10 C9 17 MBIAS CCA 14 N. COM COM Copyright © 2008, Texas Instruments Incorporated ...

  • Page 27

    ... Related Documentation from Texas Instruments For additional information concerning the PCM2912 device, see TI application report Operating Envronments for PCM2912 Applications (SLAA387). Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912 PCM2912 SLES216 – FEBRUARY 2008 Submit Documentation Feedback 27 ...

  • Page 28

    PACKAGING INFORMATION (1) Orderable Device Status PCM2912PJT NRND PCM2912PJTG4 NRND PCM2912PJTR NRND PCM2912PJTRG4 NRND (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 ...

  • Page 29

    TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing PCM2912PJTR TQFP PJT PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 32 1000 330.0 16.4 9.6 Pack Materials-Page 1 19-Jul-2008 ...

  • Page 30

    Device Package Type PCM2912PJTR TQFP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) PJT 32 1000 Pack Materials-Page 2 19-Jul-2008 Width (mm) Height (mm) 346.0 346.0 33.0 ...

  • Page 31

    PJT (S-PQFP–N32) 0, 7,00 SQ 9,00 SQ 1,05 0,95 1,20 1,00 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Falls within JEDEC MS-026 0,45 0,20 M 0,30 0,15 ...

  • Page 32

    ... TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications. ...