PCM2702

PCM2702_09 TI1 | Alldatasheet

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Technical content

DIGITAL-TO-ANALOG CONVERTER with Interface

FEATURES

G INTEGRATED USB INTERFACE: Full-Speed Transceiver Supports 12Mbps Data Transfer Fully Compliant with the USB 1.0 Specifi- cation Adaptive Mode for Isochronous Transfer Self-Powered Device G ACCEPTS 16-BIT STEREO AND MONO USB AUDIO DATA STREAMS G ANALOG PERFORMANCE (V CC = 5V): Dynamic Range: 100dB (typ at 16-bit) SNR: 105dB (typ) THD+N: 0.002% (typ at 16-bit) Full-Scale Output: 3.1V PP G 8X OVERSAMPLING DIGITAL FILTER: Passband: 0.454fS Stopband: 0.546fS Passband Ripple: ±0.002dB Stopband Attenuation: –82dB G SAMPLING RATE (F S): 32kHz, 44.1kHz, 48kHz G ON-CHIP CLOCK GENERATOR WITH SINGLE 12MHz CLOCK SOURCE G MULTI-FUNCTIONS: Digital Attenuator: 0dB to –64dB, 1dB/step Soft Mute Zero Flag Suspend Flag Playback Flag G DUAL POWER SUPPLIES: +5V for Analog Portion +3.3V for Digital Portion G PACKAGE: SSOP-28

DESCRIPTION

The PCM2702 is a single chip digital-to-analog converter offering two D/A output channels and an integrated USB 1.0 compliant interface controller. The newly developed SpAct™ (Sampling Period Adaptive Controlled Tracking) system re- covers a stable, low-jitter clock for internal PLL and DAC operation from the USB interface audio data. The PCM2702 is based upon Texas Instruments Enhanced Multi-level Delta-Sigma Modulator, an 8x oversampling digi- tal interpolation filter, and an analog output low-pass filter. The PCM2702 can accept a 48kHz, 44.1kHz and 32kHz sampling rates, using either 16-bit stereo or monaural audio data. Digital attenuation and soft-mute features are included, and are controlled via USB audio class request. Patents Pending. SpAct™ is a trademark of Texas Instruments. PCM2702 PCM2702 SBAS142A – MAY 2000 – REVISED NOVEMBER 2007 www.ti.com PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2000-2007, Texas Instruments Incorporated 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. All trademarks are the property of their respective owners.

APPLICATIONS

G STAND-ALONE USB AUDIO SPEAKERS G CRT/LCD INTEGRATED USB AUDIO SPEAKERS G USB AUDIO AMPLIFIERS G OTHER USB AUDIO APPLICATIONS

SBAS142Awww.ti.com NOTES: (1) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability. (2) V CC , VCC L, VCC R, VDD P. (3) VDD , VDD C. (4) Among VCC , VCC L, VCC R, VCC P. (5) Among VDD , VDD C. (6) Among AGND, AGNDL, AGNDR, AGNDP, DGND, DGNDC, and DGNDU. (7) XTI, D+, D–, PLYBCK, SSPND, ZERO, XTO. (8) V BUS , TEST#, TEST2, TEST1, TEST0. ABSOLUTE MAXIMUM RATINGS (1) PIN NAME TYPE DESCRIPTIONS 1 XTI IN Crystal Oscillator Input. (1) 2V DD C — Digital Power Supply for Clock Generator, +3.3V. 3 DGNDC — Digital Ground for Clock Generator. DD — Digital Power Supply, +3.3V. 5 DGND — Digital Ground. 6 D+ IN/OUT USB Differential Input/Output Plus. 7 D– IN/OUT USB Differential Input/Output Minus. BUS IN USB Bus Power (this pin NEVER consumes USB bus power).(2) 9 DGNDU — Digital Ground for USB Transceiver.

10 PLYBCK OUT Playback flag, active LOW (LOW: playback,

HIGH: idle).

11 SSPND OUT Suspend flag, active LOW (LOW: suspend,

HIGH: operational). 12 ZERO OUT Zero flag (LOW: Normal, HIGH: ZERO.) 13 TEST3 IN Test pin 3. Connect to digital ground. (2) 14 TEST2 IN Test pin 2. Connect to digital ground. (2) 15 TEST1 IN Test pin 1. Connect to digital ground. (2) 16 TEST0 IN Test pin 0. Connect to digital ground. (2) 17 V CC R — Analog Supply for R-channel, +5V. 18 AGNDR — Analog Ground for R-channel. 19 V OUT R OUT Analog Output for R-channel. 20 AGND — Analog Ground. 21 V COM — DC Common-Mode Voltage for DAC. 22 V CC — Analog Supply, +5V. 23 V OUT L OUT Analog Output for L-channel. 24 AGNDL — Analog Ground for L-channel. 25 V CC L — Analog Supply for L-channel, +5V. 26 AGNDP — Analog Ground for PLL. 27 V CC P — Analog Supply for PLL, +5V. 28 XTO OUT Crystal Oscillator Output. NOTES: (1) 3.3 V tolerant. (2) Schmitt trigger input with internal pull-down, 5V tolerant. XTI VDD C DGNDC VDD DGND D – VBUS DGNDU PLYBCK SSPND ZERO TEST3 TEST2 XTO V CC P AGNDP V CC L AGNDL V OUT L VCC VCOM AGND V OUT R AGNDR V CC R TEST0 TEST1 PCM2702 Top View SSOP ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper han- dling and installation procedures can cause damage. ESD damage can range from subtle performance degrada- tion 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. PACKAGE/ORDERING INFORMATION (1) NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. SPECIFIED PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA PCM2702E SSOP-28 DB 0 °C to +70°C PCM2702E PCM2702E Rails "" " " " PCM2702E/2K Tape and Reel

SBAS142A www.ti.com

ELECTRICAL CHARACTERISTICS

At TA = +25°C, VCC = VCC L = VCC R = VCC P = 5.0V, VDD = VDD C = 3.3V, fS = 44.1MHz, signal frequency = 1kHz and 16-bit data, unless otherwise specified. PCM2702E PARAMETER CONDITIONS MIN TYP MAX UNITS RESOLUTION 16 Bits HOST INTERFACE Supports USB revision 1.0, Full Speed DIGITAL FORMAT Audio Data Format USB ISOCHRONOUS OUT Audio Data Bit Length 16 Audio Data Channel 1, 2 Sampling Frequency (f S) 32, 44.1, 48 DIGITAL INPUT/OUTPUT Input Logic Level V IH(1) 2.0 VDC VIL(1) 0.8 VDC VIH(2) 0.7 VDD VDC VIL(2) 0.7 VDD VDC Input Logic Current I IH(1) VIN = VDD +65 +100 µA IIL(1) VIN = 0V ±10 µA IIH(2) VIN = VDD ±10 µA IIL(2) VIN = 0V ±10 µA Output Logic Level V OH (3) IOH = –1mA 2.8 VDC VOL (3) IOL = +1mA 0.5 VDC DYNAMIC PERFORMANCE (4) THD+N at VOUT = 0dB 0.002 0.005 % THD+N at VOUT = –60dB 1.2 % Dynamic Range EIAJ, A-Weighted 96 100 dB SIgnal-to-Noise Ratio EIAJ, A-Weighted 100 105 dB Channel Seperation 98 103 dB DC ACCURACY Gain Error ±1.0 ±3.0 % of FSR Gain Mismatch, Channel-to-Channel ±1.0 ±3.0 % of FSR Bipolar Zero Error V OUT = 0.5 VCC at BPZ ±30 ±60 mV ANALOG OUTPUT Output Voltage Full-Scale( –0dB) 62% of V CC VPP Center Voltage 50% of VCC VDC Load Impedance AC-Load 5 k Ω DIGITAL FILTER PERFORMANCE Passband ±0.002dB 0.454f S Passband –3dB 0.490f S Stopband 0.546fS Passband Ripple ±0.002 dB Stopband Attenuation Stopband = 0.546f S –75 dB Stopband Attenuation Stopband = 0.567f S –82 dB Delay Time 34/fS 11 s ANALOG FILTER PERFORMANCE Frequency Response at 20kHz ≠0.02 dB POWER SUPPLY REQUIREMENTS Voltage Range V DD , VDD C +3.0 +3.3 +3.6 VDC VCC , VCC L, VCC R, VCC P +4.5 +5.0 +5.5 VDC Supply Current I DD VDD = VDD C = 3.3V 22 30 mA ICC VCC = VCC L = VCC R = VCC P = 5.0V 18 25 mA Power Dissipation VDD = VDD C = 3.3V, and VCC = VCC L = VCC R = VCC P = 5.0V 165 225 mW TEMPERATURE RANGE Operation Temperature 07 0 °C Storage Temperature –55 +125 °C Thermal Resistance, θJA SSOP-28 100 °C/W NOTES: (1) Pins 8, 13, 14, 15, 16: VBUS , TEST3 TEST2 TEST1, TEST0. (2) Pin1: XTI. (3) Pins 10, 11, 12, 28: PLYBCK, SSPND, ZERO, XTO. (4) The dynamic performance is based upon ideal host signal quality, and may vary according to the system. Dynamic performance specifications are tested using a Shibasoku #725 THD Meter with 400Hz HPF, 30kHz LPF, Average Mode, and 20kHz Bandwidth limiting. The load connected to the analog output is 5kΩ , or larger, via AC coupling.

SBAS142Awww.ti.com BLOCK DIAGRAM DAC DAC SpAct™ Audio Clock Generator Oversampling Digital Filter Multi- Level Delta- Sigma Modulator USB I/F Low-Pass Filter Low-Pass Filter Power Supply Crystal OSC FIFO mclk System Clock wrclk USB Packet Data Audio Data V OUT L VCOM VOUT R rdclk USB Clock Generator PLYBCK VDD P DGNDPXTI XTO VCC AGND VDD DGND D – VBUS VDD C DGNDU DGNDC SSPND ZERO VCC L AGNDL VCC R AGNDR

SBAS142A www.ti.com TYPICAL CHARACTERISTICS All specifications at TA = +25°C, VCC = VCC L = VCC R = VCC P = 5.0V, VDD = VDD C = 3.3V, fS = 44.1MHz, signal frequency = 1kHz and 16-bit data, unless otherwise specified. FREQUENCY RESPONSE Frequency (x fS) (dB) 1 1.5 2 2.5 3 3.5 40.50 –20 –40 –60 –80 –100 –120 –140 –160 PASSBAND RIPPLE Frequency (x fS) (dB) 0.003 0.002 0.001 –0.001 –0.002 –0.003 ANALOG FILTER PERFORMANCE (100MHz-10Hz) Frequency (Hz) Response (dB) 10k 100k 1M 10M1k100 –10 –20 –30 –40 –50 –60 ANALOG FILTER PERFORMANCE (100MHz-1MHz) Frequency (Hz) Response (dB) 10k 100k 1M1k100 DIGITAL FILTER PERFORMANCE ANALOG FILTER PERFORMANCE

SBAS142Awww.ti.com TYPICAL CHARACTERISTICS (Cont.) All specifications at TA = +25°C, VCC = VCC L = VCC R = VCC P = 5.0V, VDD = VDD C = 3.3V, fS = 44.1MHz, signal frequency = 1kHz and 16-bit data, unless otherwise specified. THD+N (0dB) vs TA TA (°C) THD+N (0dB) (%) 50403020 70 60 80100–10 0.003 0.002 0.001 DYNAMIC RANGE vs T A TA (°C) Dynamic Range (dB) 50403020 70 60 80100–10 106 104 102 100 SOUND-TO-NOISE RATIO vs T A TA (°C) SNR (dB) 50403020 70 60 80100–10 110 108 106 104 102 100 CHANNEL SEPARATION vs T A TA (°C) Channel Separation (dB) 50403020 70 60 80100–10 108 106 104 102 100 THD+N (0dB) vs VCC VCC (V) THD+N (0dB) (%) 0.003 0.002 0.001 DYNAMIC RANGE vs V CC VCC (V) Dynamic Range (dB) 106 104 102 100 ANALOG DYNAMIC PERFORMANCE

SBAS142A www.ti.com TYPICAL CHARACTERISTICS (Cont.) All specifications at TA = +25°C, VCC = VCC L = VCC R = VCC P = 5.0V, VDD = VDD C = 3.3V, fS = 44.1MHz, signal frequency = 1kHz and 16-bit data, unless otherwise specified. SOUND-TO-NOISE RATIO vs V CC VCC (V) SNR (dB) 110 108 106 104 102 100 CHANNEL SEPARATION vs V CC VCC (V) Channel Separation (dB) 108 106 104 102 100

SBAS142Awww.ti.com THEORY OF OPERATION USB INTERFACE The description of the USB interface complies with Univer- sal Serial Bus specification Rev. 1.0. Control and audio data are both transferred to the PCM2702 via D+ (pin 6) and D– (pin 7). All data to/from the PCM2702 are transferred at full-speed. V BUS (pin 8) and DGNDU (pin 9) are also connected to the USB bus. VBUS (pin 8) never consumes USB bus power, it is used only for detecting the connection of the USB bus. The following information is provided in the device descriptor. The Input Terminal is defined as “USB stream” (terminal type 0x0101). The Input Terminal can accept 2-channel audio streams comprised of left and right channel data. The Output Terminal is defined as a “speaker” (terminal type 0x0301). The Feature Unit supports the following sound control features.

• Volume Control
• Mute Control The built-in digital volume controller can be manipulated by an audio class specific request from 0.0dB to –64.0dB in steps of 1.0dB. Each channel can be set independently. The master volume control is also supported. The built-in digital mute controller can be manipulated by an audio class spe- cific request. A master mute-control request is acceptable. A request to an individual channel will be stalled and ignored. Interface #1 has three alternative settings. Alternative setting #0 is the Zero Bandwidth setting. Alternative setting #1 is the 16-Bit Stereo setting, and is an operational setting. Alternative setting #2 is the 16-Bit Monaural setting, and is also an operational setting. The PCM2702 has the following two endpoints.
• Control Endpoint (EP #0)
• Isochronous Audio Data Stream Endpoint (EP #2) The Control Endpoint is a default endpoint and is used to control all functions of the PCM2702 by the standard USB request and the USB audio class specific request. The Isochronous Audio Data Stream Endpoint is an audio sink endpoint, which receives the PCM audio data, and accepts the adaptive transfer mode. Device Class 0x00 (device defined interface level) Device Subclass 0x00 (not specified) Device Protocol 0x00 (not specified) Max Packet Size for Endpoint 0 8 byte Vendor ID 0x08BB Device ID 0x2702 Release 1.0 TABLE I. Device Definition. DEVICE CONFIGURATION Figure 1 illustrates USB audio function topology. The PCM2702 has two interfaces. Each interface is constructed by some alternative setting. Interface #0 has one alternative setting. Alternative setting #0 describes the standard audio control interface. The audio control interface is constructed by a terminal. The PCM2702 has the following three termi- nals.
• Input Terminal (IT)
• Output Terminal (OT)
• Feature Unit (FU) Endpoint #0 PCM2702 Default Endpoint Endpoint #2 Audio Streaming Interface (IF #1) IT TID1 OT TID2 Standard Audio Control Interface (IF #0) FU UID3 Analog Out NOTE: IT = Input Terminal (Terminal ID #1); OT = Output Terminal (Terminal ID #2); FU = Feature Unit (Unit ID #3). FI

PLYBCK (pin 10) is switched LOW. SSPND (pin 11) is switched LOW. FIGURE 6. Play, Stop, and Detach. connected to a digital ground for proper operation. tions, available for download at www.ti.com.

SBAS142Awww.ti.com XTI VDD C DGNDC V DD DGND D – V BUS DGNDU PLYBCK SSPND ZERO TEST3 TEST2 XTO V CC P AGNDP VCC L AGNDL VOUT L VCC VCOM AGND VOUT R AGNDR VCC R TEST0 TEST1 PCM2702 R 2 R 3 R 4 12MHz C 2C 1 C 3 +3.3V +5V C 4 C 6 C 8 C 7 C 5 USB Series “B” Connector POST LPF L-Channel POST LPF R-Channel NOTE: C 1, C2: 10pF to 33pF (depending on Crystal Resonator); C 3 ,C4: 0.1µF 1-100µF; C 5 to C8: 0.1µF Ceramic each and two 1µF to 100µF for 5V and 3.3V; C 9: 10µF; R 1: 1.5kΩ ; R2, R3: 22Ω ; R4: 1MΩ ; X1: Crystal Resonator (fundamental mode, parallel resonant). C 9 FIGURE 7. Typical Connection Diagram. —— Updated front page format. 11 Operating Environment Added section and reference to SLAA374.

Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) PCM2702E NRND SSOP DB 28 47 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM PCM2702E/2K NRND SSOP DB 28 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM PCM2702E/2KG4 NRND SSOP DB 28 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM PCM2702EG4 NRND SSOP DB 28 47 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (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. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2)Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS):TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br):TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. PACKAGE OPTION ADDENDUM www.ti.com 3-Jul-2009 Addendum-Page 1

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W (mm) Pin1 Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 13-Jun-2008 Pack Materials-Page 1

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PCM2702E/2K SSOP DB 28 2000 336.6 336.6 28.6 PACKAGE MATERIALS INFORMATION www.ti.com 13-Jun-2008 Pack Materials-Page 2

MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 4040065 /E 12/01

28 PINS SHOWN

8,20 7,40 0,55 0,95 0,25 12,90 12,30 10,50 8,50 Seating Plane 9,907,90 10,50 9,90 0,38 5,60 5,00 0,22 A 2016 6,506,50 0,05 MIN 5,905,90 DIM A MAX A MIN PINS ** 2,00 MAX 6,90 7,50 0,65 M0,15 0°–/C02578° 0,10 0,09 0,25 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. D. Falls within JEDEC MO-150

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