SBFS036B May   2015  – August 2015 PCM2704C , PCM2705C , PCM2706C

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information: PCM2704C, PCM2705C
    5. 7.5  Thermal Information: PCM2706C, PCM2707C
    6. 7.6  Electrical Characteristics: PCM2704CDB, PCM2705CDB, PCM2706CPJT, PCM2707CPJT
    7. 7.7  Audio Interface Timing Characteristics
    8. 7.8  Audio Clock Timing Characteristics
    9. 7.9  External ROM Read Interface Timing Characteristics
    10. 7.10 SPI Timing Characteristics
    11. 7.11 Typical Characteristics
      1. 7.11.1 Internal Filter: DAC Digital Interpolation Filter Frequency Response
      2. 7.11.2 Internal Filter: DAC Analog Low-Pass Filter Frequency Response
      3. 7.11.3 General Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagrams
    3. 9.3 Feature Description
      1. 9.3.1  Clock and Reset
      2. 9.3.2  Operation Mode Selection
        1. 9.3.2.1 Power Configuration Select/Host Detection
        2. 9.3.2.2 Function Select (PCM2706C/7C Only)
      3. 9.3.3  DAC
      4. 9.3.4  Digital Audio Interface: S/PDIF Output
        1. 9.3.4.1 Channel Status Information
        2. 9.3.4.2 Copyright Management
      5. 9.3.5  Digital Audio Interface: I2S Interface Output (PCM2706C/7C)
      6. 9.3.6  Descriptor Data Modification
      7. 9.3.7  External ROM Descriptor (PCM2704C/6C)
      8. 9.3.8  External ROM Example
      9. 9.3.9  Serial Programming Interface (PCM2705C/7C)
      10. 9.3.10 USB Host Interface Sequence
        1. 9.3.10.1 Power-On, Attach, and Playback Sequence
        2. 9.3.10.2 Play, Stop, and Detach Sequence
        3. 9.3.10.3 Suspend and Resume Sequence
      11. 9.3.11 Operating Environment
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
      1. 9.5.1 USB Interface
        1. 9.5.1.1 Device Configuration
        2. 9.5.1.2 Interface Number 0 (Default/Control Interface)
        3. 9.5.1.3 Interface Number 1 (Isochronous-Out Interface)
        4. 9.5.1.4 Interface Number 2 (HID Interface)
          1. 9.5.1.4.1 HID Items Reported
            1. 9.5.1.4.1.1 Basic HID Operation
            2. 9.5.1.4.1.2 Extended HID Operation (PCM2705/6/7)
            3. 9.5.1.4.1.3 Auxiliary HID Status Report (PCM2705C/7C)
        5. 9.5.1.5 Endpoints
    6. 9.6 Register Maps
      1. 9.6.1 SPI Register (PCM2705C/7C)
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Typical Circuit Connection 1: USB Speaker
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Typical Circuit Connection 2: Remote Headphone
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curves
      3. 10.2.3 Typical Circuit Connection 3: DSP Surround Processing Amplifier
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
        3. 10.2.3.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Community Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7 Specifications

7.1 Absolute Maximum Ratings

Over operating free-air temperature range unless otherwise noted. (1)
MIN MAX UNIT
Supply voltage VBUS –0.3 6.5 V
VCCP, VCCL, VCCR, VDD –0.3 4 V
Supply voltage differences VCCP, VCCL, VCCR, VDD ±0.1 V
Ground voltage differences PGND, AGNDL, AGNDR, DGND, ZGND ±0.1 V
Digital input voltage HOST –0.3 6.5 V
D+, D–, HID0/MS, HID1/MC, HID2/MD, XTI, XTO, DOUT, SSPND, CK, DT, PSEL, FSEL, TEST, TEST0, TEST1, FUNC0, FUNC1, FUNC2, FUNC3 –0.3 (VDD + 0.3) < 4 V
Analog input voltage VCOM –0.3 (VCCP + 0.3) < 4 V
VOUTR –0.3 (VCCR + 0.3) < 4 V
VOUTL –0.3 (VCCL + 0.3) < 4 V
Input current (any pins except supplies) ±10 mA
Ambient temperature under bias –40 125 °C
Junction temperature 150 °C
Package temperature (IR reflow, peak) 260 °C
Storage temperature, Tstg –55 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

7.2 ESD Ratings

MAX UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) ±3000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) ±1500
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

Over operating free-air temperature range.
MIN NOM MAX UNIT
Supply voltage VBUS 4.35 5 5.25 V
VCCP, VCCL, VCCR, VDD 3 3.3 3.6
Digital input logic level TTL-compatible
Digital input clock frequency 11.994 12 12.006 MHz
Analog output load resistance 16 32 Ω
Analog output load capacitance 100 pF
Digital output load capacitance 20 pF
Operating free-air temperature, TA –25 85 °C

7.4 Thermal Information: PCM2704C, PCM2705C

THERMAL METRIC(1) PCM2704C, PCM2705C UNIT
DB (SSOP)
28 PINS
RθJA Junction-to-ambient thermal resistance 68.2 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 27.2 °C/W
RθJB Junction-to-board thermal resistance 29.5 °C/W
ψJT Junction-to-top characterization parameter 2.7 °C/W
ψJB Junction-to-board characterization parameter 29.1 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

7.5 Thermal Information: PCM2706C, PCM2707C

THERMAL METRIC(1) PCM2706C, PCM2707C UNIT
PJT (TQFP)
32 PINS
RθJA Junction-to-ambient thermal resistance 68.2 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 27.2 °C/W
RθJB Junction-to-board thermal resistance 29.5 °C/W
ψJT Junction-to-top characterization parameter 2.7 °C/W
ψJB Junction-to-board characterization parameter 29.1 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

7.6 Electrical Characteristics: PCM2704CDB, PCM2705CDB, PCM2706CPJT, PCM2707CPJT

All specifications at TA = 25°C, VBUS = 5 V, ƒS = 44.1 kHz, ƒIN = 1 kHz, and 16-bit data (unless otherwise noted). For the Host interface, apply USB revision 1.1, full-speed. For audio data format, use USB isochronous data format.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT LOGIC
VIH Input logic high level 2 3.3 VDC
Input logic high level(1) 2 5.5
VIL Input logic low level –0.3 0.8 VDC
Input logic low level(1) –0.3 0.8
IIH Input logic high current(2) VIN = 3.3 V ±10 μA
Input logic high current VIN = 3.3 V 65 100
IIL Input logic low current(2) VIN = 0 V ±10 μA
Input logic low current VIN = 0 V ±10
OUTPUT LOGIC
VOH Output logic high level(3) IOH = –2 mA 2.8 VDC
Output logic high level IOH = –2 mA 2.4
VOL Output logic low level(3) IOL = 2 mA 0.3 VDC
Output logic low level IOL = 2 mA 0.4
CLOCK FREQUENCY
Input clock frequency, XTI 11.994 12 12.006 MHz
ƒS Sampling frequency 32
44.1
48		 kHz
DAC CHARACTERISTICS
Resolution 16 bits
Audio data channel 1, 2 channel
DC ACCURACY
Gain mismatch, channel-to-channel ±2 ±8 % of FSR
Gain error ±2 ±8 % of FSR
Bipolar zero error ±3 ±6 % of FSR
DYNAMIC PERFORMANCE (4)
THD + N Total harmonic distortion + noise Line (5) RL > 10 kΩ, self-powered, VOUT = 0 dB 0.006% 0.01%
RL > 10 kΩ, bus-powered, VOUT = 0 dB 0.012% 0.02%
Headphone RL = 32 Ω, self- or bus-powered, VOUT = 0 dB 0.025%
THD + N Total harmonic distortion + noise VOUT = –60 dB 2%
Dynamic range EIAJ, A-weighted 90 98 dB
SNR Signal-to-noise ratio EIAJ, A-weighted 90 98 dB
Channel separation 60 70 dB
ANALOG OUTPUT
Output voltage 0.55 VCCL
0.55 VCCR		 VPP
Center voltage 0.5 VCCP V
Load impedance Line AC-coupling 10 kΩ
Headphone AC-coupling 16 32 Ω
LPF frequency response –3 dB 140 kHz
ƒ = 20 kHz –0.1 dB
DIGITAL FILTER PERFORMANCE
Passband 0.454 ƒS Hz
Stop band 0.546 ƒS Hz
Passband ripple ±0.04 dB
Stop band attenuation –50 dB
Delay time 20 / ƒS s
POWER SUPPLY REQUIREMENTS
Voltage range VBUS Bus-powered 4.35 5 5.25 VDC
VCCP, VCCL, VCCR, VDD Self-powered 3 3.3 3.6
Supply current Line DAC operation 23 30 mA
Headphone DAC operation (RL = 32 Ω) 35 46
Line/headphone Suspend mode (6) 150 190 μA
Power dissipation (self-powered) Line DAC operation 76 108 mW
Headphone DAC operation (RL = 32 Ω) 116 166
Line/headphone Suspend mode (6) 495 684 μW
Power dissipation (bus-powered) Line DAC operation 115 158 mW
Headphone DAC operation (RL = 32 Ω) 175 242
Line/headphone Suspend mode (6) 750 998 μW
Internal power-supply voltage (7) VCCP, VCCL, VCCR, VDD Bus-powered 3.2 3.35 3.5 VDC
TEMPERATURE RANGE
Operating temperature –25 85 °C
(1) HOST pin.
(2) D+, D–, HOST, TEST, TEST0, TEST1, DT, PSEL, FSEL, XTI pins.
(3) FUNC0, FUNC1, and FUNC2 pins.
(4) ƒIN = 1 kHz, using the System Two Cascade™ audio measurement system by Audio Precision® in RMS mode with a 20-kHz low-pass filter (LPF) and 400-Hz high-pass filter (HPF).
(5) THD + N performance varies slightly, depending on the effective output load, including dummy load R7 and R8 in Figure 35.
(6) In USB suspended state
(7) VDD, VCCP, VCCL, VCCR pins. These pins work as output pins of internal power supply for bus-powered operation.

7.7 Audio Interface Timing Characteristics

Load capacitance of LRCK, BCK, and DOUT is 20 pF. For timing diagrams, see Figure 1 and Figure 2.
MIN MAX UNIT
t(BCY) BCK pulse cycle time 300 ns
t(BCH) BCK pulse duration, high 100 ns
t(BCL) BCK pulse duration, low 100 ns
t(BL) LRCK delay time from BCK falling edge –20 40 ns
t(BD) DOUT delay time from BCK falling edge –20 40 ns
t(LD) DOUT delay time from LRCK edge –20 40 ns
t(DS) DIN setup time 20 ns
t(DH) DIN hold time 20 ns

7.8 Audio Clock Timing Characteristics

Load capacitance is 20 pF. For timing diagrams, see Figure 3.
MIN MAX UNIT
t(SLL), t(SLH) LRCK delay time from SYSCK rising edge –5 10 ns
t(SBL), t(SBH) BCK delay time from SYSCK rising edge –5 10 ns

7.9 External ROM Read Interface Timing Characteristics

For timing diagrams, see Figure 4.
MIN MAX UNIT
ƒ(CK) CK clock frequency 100 kHz
t(BUF) Bus free time between a STOP and a START condition 4.7 μs
t(LOW) Low period of the CK clock 4.7 μs
t(HI) High period of the CK clock 4 μs
t(RS-SU) Setup time for START/repeated START condition 4.7 μs
t(S-HD)
t(RS-HD)		 Hold time for START/repeated START condition 4 μs
t(D-SU) Data setup time 250 ns
t(D-HD) Data hold time 0 900 ns
t(CK-R) Rise time of CK signal 20 + 0.1 CB 1000 ns
t(CK-F) Fall time of CK signal 20 + 0.1 CB 1000 ns
t(DT-R) Rise time of DT signal 20 + 0.1 CB 1000 ns
t(DT-F) Fall time of DT signal 20 + 0.1 CB 1000 ns
t(P-SU) Setup time for STOP condition 4 μs
CB Capacitive load for DT and CK lines 400 pF
VNH Noise margin at high level for each connected device (including hysteresis) 0.2 VDD V

7.10 SPI Timing Characteristics

For timing diagrams, see Figure 5.
MIN MAX UNIT
t(MCY) MC pulse cycle time 100 ns
t(MCL) MC low-level time 50 ns
t(MCH) MC high-level time 50 ns
t(MHH) MS high-level time 100 ns
t(MLS) MS falling edge to MC rising edge 20 ns
t(MLH) MS hold time 20 ns
t(MDH) MD hold time 15 ns
t(MDS) MD setup time 20 ns
PCM2704C PCM2705C PCM2706C PCM2707C ai_tim_audio_data_if_format_bfs036.gifFigure 1. Audio Data Interface Format
PCM2704C PCM2705C PCM2706C PCM2707C ai_tim_audio_if_bfs036.gifFigure 2. Audio Interface Timing
PCM2704C PCM2705C PCM2706C PCM2707C ai_tim_audio_clk_bfs036.gifFigure 3. Audio Clock Timing
PCM2704C PCM2705C PCM2706C PCM2707C ai_tim_xtrnl_rom_read_if_bfs036.gifFigure 4. External ROM Read Interface Timing Requirements
PCM2704C PCM2705C PCM2706C PCM2707C tim_spi_bfs036.gifFigure 5. SPI Timing Diagram

7.11 Typical Characteristics

7.11.1 Internal Filter: DAC Digital Interpolation Filter Frequency Response

All specifications at TA = 25°C, VBUS = 5 V, ƒS = 44.1 kHz, ƒIN = 1 kHz, 16-bit data (unless otherwise noted).
PCM2704C PCM2705C PCM2706C PCM2707C g001_bfs036.gifFigure 6. Frequency Response
PCM2704C PCM2705C PCM2706C PCM2707C g002_bfs036.gifFigure 7. Passband Ripple

7.11.2 Internal Filter: DAC Analog Low-Pass Filter Frequency Response

All specifications at TA = 25°C, VBUS = 5 V, ƒS = 44.1 kHz, ƒIN = 1 kHz, 16-bit data (unless otherwise noted).
PCM2704C PCM2705C PCM2706C PCM2707C g003_bfs036.gifFigure 8. Passband Characteristics
PCM2704C PCM2705C PCM2706C PCM2707C g004_bfs036.gifFigure 9. Stop Band Characteristics

7.11.3 General Characteristics

All specifications at TA = 25°C, VBUS = 5 V, ƒS = 44.1 kHz, ƒIN = 1 kHz, 16-bit data (unless otherwise noted).
PCM2704C PCM2705C PCM2706C PCM2707C g005_bfs036.gifFigure 10. Total Harmonic Distortion + Noise vs Free-Air Temperature
PCM2704C PCM2705C PCM2706C PCM2707C g007_bfs036.gifFigure 12. Total Harmonic Distortion + Noise vs Supply Voltage
PCM2704C PCM2705C PCM2706C PCM2707C g009_bfs036.gifFigure 14. Total Harmonic Distortion + Noise vs Sampling Frequency
PCM2704C PCM2705C PCM2706C PCM2707C g011_bfs036.gifFigure 16. Dynamic Range and SNR vs Free-Air Temperature
PCM2704C PCM2705C PCM2706C PCM2707C g013_bfs036.gifFigure 18. Dynamic Range and SNR vs Supply Voltage
PCM2704C PCM2705C PCM2706C PCM2707C g015_bfs036.gifFigure 20. Dynamic Range and SNR vs Sampling Frequency
PCM2704C PCM2705C PCM2706C PCM2707C g017_bfs036.gifFigure 22. Suspend Current vs Supply Voltage
PCM2704C PCM2705C PCM2706C PCM2707C g019_bfs036.gifFigure 24. Output Spectrum (–60 dB, N = 8192)
PCM2704C PCM2705C PCM2706C PCM2707C g006_bfs036.gifFigure 11. Total Harmonic Distortion + Noise vs Free-Air Temperature
PCM2704C PCM2705C PCM2706C PCM2707C g008_bfs036.gifFigure 13. Total Harmonic Distortion + Noise vs Supply Voltage
PCM2704C PCM2705C PCM2706C PCM2707C g010_bfs036.gifFigure 15. Total Harmonic Distortion + Noise vs Sampling Frequency
PCM2704C PCM2705C PCM2706C PCM2707C g012_bfs036.gifFigure 17. Dynamic Range and SNR vs Free-Air Temperature
PCM2704C PCM2705C PCM2706C PCM2707C g014_bfs036.gifFigure 19. Dynamic Range and SNR vs Supply Voltage
PCM2704C PCM2705C PCM2706C PCM2707C g016_bfs036.gifFigure 21. Dynamic Range and SNR vs Sampling Frequency
PCM2704C PCM2705C PCM2706C PCM2707C g018_bfs036.gifFigure 23. Suspend Current vs Free-Air Temperature
PCM2704C PCM2705C PCM2706C PCM2707C g020_bfs036.gifFigure 25. Output Spectrum (–60 dB, N = 8192)