PCM2704C, PCM2705C PCM2706C, PCM2707C Burr-Brown Audio www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 Stereo Audio DAC with USB Interface, Single-Ended Headphone Output and S/PDIF Output Check for Samples: PCM2704C, PCM2705C, PCM2706C, PCM2707C FEATURES 1 • On-Chip USB Interface: – No Dedicated Device Driver Needed – Full-Speed Transceivers – Fully Compliant with USB 2.0 Specification – USB 1.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com 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.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 ELECTRICAL CHARACTERISTICS All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted). PARAMETER TEST CONDITIONS PCM2704CDB, PCM2705CDB PCM2706CPJT, PCM2707CPJT MIN TYP UNIT MAX DIGITAL INPUT/OUTPUT Host interface Apply USB revision 1.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted). PARAMETER TEST CONDITIONS PCM2704CDB, PCM2705CDB PCM2706CPJT, PCM2707CPJT MIN TYP UNIT MAX ANALOG OUTPUT Output voltage 0.55 VCCL, 0.55 VCCR Center voltage Load impedance VPP 0.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 THERMAL INFORMATION THERMAL METRIC PCM2704C, PCM2705C (1) DB UNITS 32 PINS θJA Junction-to-ambient thermal resistance 68.2 θJCtop Junction-to-case (top) thermal resistance 27.2 θJB Junction-to-board thermal resistance 29.5 ψJT Junction-to-top characterization parameter 2.7 ψJB Junction-to-board characterization parameter 29.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 Table 1. Pin Descriptions: DB Package (PCM2704C/PCM2705C) TERMINAL NAME NO. I/O DESCRIPTION AGNDL 12 — Analog ground for headphone amplifier of L-channel AGNDR 17 — Analog ground for headphone amplifier of R-channel CK 2 O Clock output for external ROM (PCM2704C). Must be left open (PCM2705C).
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com Table 2. Pin Descriptions: PJT Package (PCM2706C/PCM2707C) TERMINAL NAME NO. I/O AGNDL 26 — Analog ground for headphone amplifier of L-channel AGNDR 31 — Analog ground for headphone amplifier of R-channel CK 14 O Clock output for external ROM (PCM2706C). Must be left open (PCM2707C).
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 FUNCTIONAL BLOCK DIAGRAMS PCM2704C/PCM2705C VCCP VCCL VCCR VDD PGND AGNDL AGNDR DGND ZGND Power Manager SSPND 5-V to 3.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com PCM2706C/PCM2707C VCCP VCCL VCCR VDD PGND AGNDL AGNDR DGND ZGND Power Manager SSPND 5-V to 3.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 TYPICAL CHARACTERISTICS: INTERNAL FILTER All specifications at TA = 25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data (unless otherwise noted). DAC Digital Interpolation Filter Frequency Response AMPLITUDE vs FREQUENCY AMPLITUDE vs FREQUENCY 0.05 0 0.04 0.03 -40 Amplitude (dB) Amplitude (dB) -20 -60 -80 -100 0.02 0.01 0 -0.01 -0.02 -0.03 -120 -0.04 -0.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com TYPICAL CHARACTERISTICS: GENERAL All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted). TOTAL HARMONIC DISTORTION + NOISE vs FREE-AIR TEMPERATURE TOTAL HARMONIC DISTORTION + NOISE vs FREE-AIR TEMPERATURE 0.05 Total Harmonic Distortion + Noise (%) Total Harmonic Distortion + Noise (%) 0.05 Bus-Powered VOUT = 0 dB 0.04 0.03 32 W 0.02 10 kW 0.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 TYPICAL CHARACTERISTICS: GENERAL (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted). TOTAL HARMONIC DISTORTION + NOISE vs SAMPLING FREQUENCY TOTAL HARMONIC DISTORTION + NOISE vs SAMPLING FREQUENCY 0.05 Total Harmonic Distortion + Noise (%) Total Harmonic Distortion + Noise (%) 0.05 Bus-Powered VOUT = 0 dB 0.04 32 W 0.03 0.02 10 kW 0.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com TYPICAL CHARACTERISTICS: GENERAL (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted).
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 TYPICAL CHARACTERISTICS: GENERAL (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted). AMPLITUDE vs FREQUENCY 0 -20 -20 -40 -40 Amplitude (dB) Amplitude (dB) AMPLITUDE vs FREQUENCY 0 -60 -80 -60 -80 -100 -100 -120 -120 -140 -140 0 5 10 15 20 Frequency (kHz) Figure 21.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com DETAILED DESCRIPTION Clock and Reset For both USB and audio functions, the PCM2704C/5C/6C/7C require a 12-MHz (±500 ppm) clock that can be generated by the onboard oscillator using a 12-MHz crystal resonator.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 USB Interface Control data and audio data are transferred to the PCM2704C/5C/6C/7C via the D+ pin (pin 9 for the PCM2704C/5C, pin 23 for the PCM2706C/7C) and D– pin (pin 8 for the PCM2704C/5C, pin 22 for the PCM2706C/7C). D+ should be pulled up with a 1.5-kΩ (±5%) resistor.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com Device Configuration Figure 23 illustrates the USB audio function topology. The PCM2704C/5C/6C/7C have three interfaces. Each interface is enabled by different alternative settings. Endpoint #0 Default Endpoint FU Endpoint #2 (I/F #1) IT TID1 Audio Streaming Interface OT TID2 Analog Out UID3 Standard Audio Control Interface (I/F #0) Endpoint #5 (I/F #2) HID Interface PCM2704C/5C/6C/7C Figure 23.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 Interface #1 (Isochronous-Out Interface) Interface #1 is for the audio-streaming data-out interface. Interface #1 has the alternative settings described in Table 8. Alternative setting #0 is the zero-bandwidth setting. All other alternative settings are operational settings. Table 8.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com DAC The PCM2704C/5C/6C/7C have a DAC that uses an oversampling technique with 128-fS, second-order, multi-bit noise shaping. This technique provides extremely low quantization noise in the audio band, and the built-in analog low-pass filter removes the high-frequency components of the noise-shaping signal.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 50% of VDD LRCK (Output) t(BCH) t(BCL) t(BL) 50% of VDD BCK (Output) t(BCY) t(BD) t(LD) 50% of VDD DOUT (Output) t(DS) t(DH) 50% of VDD DIN (Input) Figure 25. Audio Interface Timing Table 9.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com DESCRIPTOR DATA MODIFICATION The descriptor data can be modified through the I2C™ port by external ROM (PCM2704C/6C) or through the SPI port by an SPI host such as an MCU (PCM2705C/7C) under a particular configuration of the PSEL and HOST pins.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 Figure 27 illustrates the timing for an external ROM read operation. The timing characteristics are summarized in Table 11. DT CK 1-7 8 9 1-8 9 1-8 9 9 Device Address R/W ACK DATA ACK DATA ACK NACK S P R/W: Read operation if ‘1’; otherwise, Write operation ACK: Acknowledgement of a byte if ‘0’ DATA: 8 bits (1 byte) NACK: No acknowledgement if ‘1’ Start Condition Stop Condition Figure 27.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com Figure 28 shows the timing for an external ROM read interface. The respective timing characteristics are summarized in Table 12. Repeated Start Start Stop t(D-HD) t(DT-F) t(D-SU) t(BUF) t(DT-R) t(P-SU) DT t(CK-R) t(LOW) t(RS-HD) CK t(S-HD) t(HI) t(RS-SU) t(CK-F) Figure 28. External ROM Read Interface Timing Requirements Table 12.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com Serial Programming Interface (PCM2705C/7C) The PCM2705C/7C supports a serial interface (SPI) to program the descriptor and to set the HID state. Descriptor data are described in the External ROM Descriptor section. Figure 29 illustrates the SPI timing; Table 13 lists the respective timing characteristics.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 SPI Register (PCM2705C/7C) Table 14. SPI Register Description B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 0 0 0 0 ST 0 ADDR 0 D0 D1 D2 D3 D4 D5 D6 D7 D[7:0] Function of the lower 8 bits depends on the value of the ST (B11) bit.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com USB Host Interface Sequence Power-On, Attach, and Playback Sequence The PCM2704C/5C/6C/7C are ready for setup when the reset sequence has finished and the USB bus is attached. After a connection has been established (through the set-up process), the PCM2704C/5C/6C/7C are ready to accept USB audio data.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 Play, Stop, and Detach Sequence When the host finishes or aborts playback, the PCM2704C/5C/6C/7C stop playing after the last audio data output is complete. Figure 32 illustrates the play, stop, and detach sequence. VBUS Audio Data Audio Data Last Audio Data D+ / DSOF SOF SOF SOF SOF VOUTL VOUTR 1 ms Detach Figure 32.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com EXAMPLE CIRCUITS Operating Environment For current information on the PCM2704C/2705C/2706C/2707C operating environments, see the Updated Operating Environments for PCM270X, PCM290X Applications application report, SLAA374, available through the TI website at www.ti.com.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 Typical Circuit Connection 2: Remote Headphone Figure 35 illustrates a typical circuit connection for a bus-powered, 100-mA headphone with seven HIDs.
PCM2704C, PCM2705C PCM2706C, PCM2707C SBFS036A – AUGUST 2011 – REVISED JULY 2012 www.ti.com Typical Circuit Connection 3: DSP Surround Processing Amplifier Figure 36 illustrates a typical circuit connection for an I2S- and SPI-enabled self-powered application.
PCM2704C, PCM2705C PCM2706C, PCM2707C www.ti.com SBFS036A – AUGUST 2011 – REVISED JULY 2012 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (August 2011) to Revision A Page • Changed product status from Mixed Status to Production Data .......................................................................................... 1 • Changed Features section to show full compliance with USB2.
PACKAGE OPTION ADDENDUM www.ti.
PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant PCM2705CDBR SSOP DB 28 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1 PCM2706CPJTR TQFP PJT 32 1000 330.0 16.8 9.6 9.6 1.5 12.0 16.0 Q2 PCM2707CPJTR TQFP PJT 32 1000 330.0 16.8 9.6 9.6 1.5 12.0 16.
PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PCM2705CDBR SSOP DB 28 2000 367.0 367.0 38.0 PCM2706CPJTR TQFP PJT 32 1000 367.0 367.0 38.0 PCM2707CPJTR TQFP PJT 32 1000 367.0 367.0 38.
MECHANICAL DATA MPQF112 – NOVEMBER 2001 PJT (S-PQFP–N32) PLASTIC QUAD FLATPACK 0,45 0,30 0,80 0,20 M 0,20 0,09 Gage Plane 32 0,15 0,05 1 0,25 0°– 7° 7,00 SQ 0,75 0,45 9,00 SQ 1,05 0,95 Seating Plane 0,10 1,20 1,00 4203540/A 11/01 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C.
MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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