SLES211C February   2008  – July 2015 PCM1681 , PCM1681-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings: PCM1681
    3. 7.3 ESD Ratings: PCM1681-Q1
    4. 7.4 Recommended Operating Conditions
    5. 7.5 Thermal Information
    6. 7.6 Electrical Characteristics
    7. 7.7 Interface Timing Requirements
    8. 7.8 Typical Characteristics
      1. 7.8.1 Digital Filter (De-Emphasis Off)
      2. 7.8.2 De-Emphasis Filter
      3. 7.8.3 Analog Filter
      4. 7.8.4 Analog Dynamic Performance
        1. 7.8.4.1 Supply Voltage Characteristics
        2. 7.8.4.2 Temperature Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 System Clock Input
      2. 8.3.2 Power-on-Reset Function
      3. 8.3.3 Audio Serial Interface
      4. 8.3.4 Audio Data Formats and Timing
      5. 8.3.5 De-Emphasis Filter
      6. 8.3.6 Oversampling Rate Control
      7. 8.3.7 Zero Flag
      8. 8.3.8 Mode Control
        1. 8.3.8.1 Parallel Hardware Control
        2. 8.3.8.2 SPI Control Interface
        3. 8.3.8.3 Analog Outputs
          1. 8.3.8.3.1 VCOM Output
        4. 8.3.8.4 Register Write Operation
        5. 8.3.8.5 Interface Timing Requirements
    4. 8.4 Device Functional Modes
      1. 8.4.1 Control Modes
      2. 8.4.2 Audio Modes
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
        1. 8.5.1.1 Slave Address
        2. 8.5.1.2 Packet Protocol
        3. 8.5.1.3 Write Operation
        4. 8.5.1.4 Read Operation
      2. 8.5.2 Mode Control Registers
        1. 8.5.2.1 User-Programmable Mode Controls
    6. 8.6 Register Maps
      1. 8.6.1 Reserved Registers
      2. 8.6.2 Register Definitions
        1. 8.6.2.1  ATx[7:0]: Digital Attenuation Level Setting
        2. 8.6.2.2  MUTx: Soft Mute Control
        3. 8.6.2.3  DACx: DAC Operation Control
        4. 8.6.2.4  FLT: Digital Filter Roll-Off Control
        5. 8.6.2.5  FMT[3:0]: Audio Interface Data Format
        6. 8.6.2.6  SRST: Reset
        7. 8.6.2.7  ZREV: Zero-Flag Polarity Select
        8. 8.6.2.8  DREV: Output Phase Select
        9. 8.6.2.9  DMF[1:0]: Sampling Frequency Selection for the De-Emphasis Function
        10. 8.6.2.10 DMC: Digital De-Emphasis All-Channel Function Control
        11. 8.6.2.11 REV[8:1]: Output Phase Select per Channel
        12. 8.6.2.12 OVER: Oversampling Rate Control
        13. 8.6.2.13 FLTx: Digital Filter Roll-Off Control per DATA Group
        14. 8.6.2.14 DAMS: Digital Attenuation Mode Select
        15. 8.6.2.15 AZRO[1:0]: Zero-Flag Channel-Combination Select
        16. 8.6.2.16 ZERO[8:1]: Zero-Detect Status (Read-Only, I2C Interface Only)
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 D/A Output Filter Circuits
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Hardware Control Method
        2. 9.2.2.2 Audio Input
        3. 9.2.2.3 Audio Output
        4. 9.2.2.4 Master Clock
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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7 Specifications

7.1 Absolute Maximum Ratings(1)

Over operating free-air temperature range (unless otherwise noted).
MIN MAX UNIT
Supply voltage VCC1, VCC2 –0.3 6.5 V
VDD –0.3 4 V
Supply voltage differences VCC1, VCC2 –0.1 0.1 V
Ground voltage differences AGND1, AGND2, DGND –0.1 V
Input voltage to digital pins ZR1/ZR1/FMT0, ZR2, MSEL –0.3 VDD + 0.3, < 4 V
MS/ADR/FMT1, MC/SCL/DEMP, MD/SDA/MUTE, SCK, BCK, LRCK,
DATA1, 2, 3, 4		 –0.3 6.5 V
Input voltage to analog pins –0.3 VCC + 0.3, < 6.5 V
Input current any pins except supplies –10 10 mA
Ambient temperature under bias –40 125 °C
Junction temperature , TJ 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: PCM1681

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±4000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1000
(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 ESD Ratings: PCM1681-Q1

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per AEC Q100-002(1) ±2000 V
Charged-device model (CDM), per AEC Q100-011 ±1000
(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

7.4 Recommended Operating Conditions

Over operating free-air temperature range.
MIN NOM MAX UNIT
Analog supply voltage, VCC1, VCC2 4.5 5 5.5 V
Digital supply voltage, VDD 3 3.3 3.6 V
Digital input logic family TTL
Digital input clock frequency System clock 1.024 36.864 MHz
Sampling clock 8 192 kHz
Analog output load resistance 5 kΩ
Analog output load capacitance 50 pF
Digital output load capacitance 20 pF
Operating free-air temperature, TA PCM1681 –40 85 °C
PCM1681-Q1 –40 105 °C

7.5 Thermal Information

THERMAL METRIC(1) PCM1681, PCM1681-Q1 UNIT
PWP (HTSSOP)
28 PINS
RθJA Junction-to-ambient thermal resistance 31 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 14.9 °C/W
RθJB Junction-to-board thermal resistance 12.6 °C/W
ψJT Junction-to-top characterization parameter 0.4 °C/W
ψJB Junction-to-board characterization parameter 12.4 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 1.1 °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

All specifications at VCC = 5.0 V, VDD = 3.3 V, fS = 48 kHz, system clock = 512 fS, and 24-bit data, narrow o/s mode, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
RESOLUTION 24 bits
DATA FORMAT
Audio data interface format Right-justified, I2S, left-justified, TDM
Audio data bit length 16-, 18-, 20-, or 24-bits, selectable
Audio data format MSB-first, 2s complement
fS Sampling frequency 5 200 kHz
System clock frequency 128, 192, 256, 384,
512, 768, 1152 fS
DIGITAL INPUT/OUTPUT
Logic family TTL compatible
VIH(1) Input logic level 2.0 VDD VDC
VIL(1) 0.8
VIH(2) 2.0 5.5
VIL(2) 0.8
IIH(1)(2) Input logic current VIN = VDD 10 μA
IIL(1)(2) VIN = 0 V –10
VOH(3) Output logic level IOH = –1 mA 2.4 VDC
VOL(3)(4) IOL = 1 mA 0.4
DYNAMIC PERFORMANCE(5)
THD+N Total harmonic distortion + noise VOUT = 0 dB, fS = 48 kHz 0.002% 0.008%
VOUT = 0 dB, fS = 96 kHz, system clock = 256 fS 0.002%
VOUT = 0 dB, fS = 192 kHz,
system clock = 128 fS		 0.002%
Dynamic range EIAJ, A-weighted, fS = 48 kHz 100 105 dB
A-weighted, fS = 96 kHz, system clock = 256 fS 105
A-weighted, fS = 192 kHz, system clock = 128 fS 105
SNR Signal-to-noise ratio EIAJ, A-weighted, fS = 48 kHz 100 105 dB
A-weighted, fS = 96 kHz, system clock = 256 fS 105
A-weighted, fS = 192 kHz, system clock = 128 fS 105
Channel separation fS = 48 kHz 94 102 dB
fS = 96 kHz, system clock = 256 fS 102
fS = 192 kHz, system clock = 128 fS 102
DC ACCURACY
Gain error ±2.0 ±6 % of FSR
Gain mismatch, channel-to-channel ±2.0 ±6 % of FSR
Bipolar zero error VOUT = 0.486 VCC at BPZ input ±30 ±80 mV
ANALOG OUTPUT
Output voltage Full-scale (–0 dB) 0.75 VCC VPP
Bipolar zero voltage 0.486 VCC VDC
Load impedance AC-coupled load 5 kΩ
DIGITAL FILTER PERFORMANCE
Filter Characteristics (Sharp Roll-Off)
Passband ±0.015 dB 0.454 fS
Stop band 0.546 fS
Passband ripple ±0.015 dB
Stop band attenuation Stop band = 0.546 fS –57 dB
Filter Characteristics (Slow Roll-Off)
Passband ±0.004 dB 0.261 fS
Stop band 0.727 fS
Passband ripple ±0.004 dB
Stop band attenuation Stop band = 0.727 fS –56 dB
Filter Characteristics
Delay time 24/fS
De-emphasis error ±0.1 dB
ANALOG FILTER PERFORMANCE
Frequency response at 20 kHz –0.02 dB
at 44 kHz –0.07
POWER-SUPPLY REQUIREMENTS
VDD Voltage range 3 3.3 3.6 VDC
VCC 4.5 5.0 5.5
IDD Supply current fS = 48 kHz 13 20 mA
fS = 96 kHz, system clock = 256 fS 18
fS = 192 kHz, system clock = 128 fS 23
ICC Supply current fS = 48 kHz 62 80 mA
fS = 96 kHz, system clock = 256 fS 62
fS = 192 kHz, system clock = 128 fS 62
Power dissipation fS = 48 kHz 353 466 mW
fS = 96 kHz, system clock = 256 fS 369
fS = 192 kHz, system clock = 128 fS 386
TEMPERATURE RANGE
Operating temperature PCM1681 –40 85 °C
PCM1681-Q1 –40 105 °C
θJA Thermal resistance 28-pin TSSOP PowerPAD™ 28 °C/W
(1) Pins 1, 14: ZR1/ZR1/FMT0 (input mode), MSEL
(2) Pins 2, 3, 4, 5, 6, 7, 8, 11, 12, 13: MS/ADR/FMT1, MC/SCL/DEMP, MD/SDA/MUTE (input mode), SCK, DATA1, BCK, LRCK, DATA2, DATA3, DATA4
(3) Pins 1, 28: ZR1/ZR1/FMT0 (output mode), ZR2
(4) Pin 4: MD/SDA/MUTE (output mode)
(5) Analog performance characteristics are measured using the System Two™ Cascade audio measurement system by Audio Precision™, fIN = 1 kHz, average mode, with 20-kHz LPF and 400-Hz HPF.

7.7 Interface Timing Requirements

PARAMETER MIN MAX UNIT
f(SCL) SCL clock frequency 100 kHz
t(BUF) Bus free time between a STOP and START condition 4.7 μs
t(LOW) Low period of the SCL clock 4.7 μs
t(HI) High period of the SCL clock 4 μs
t(RS-SU) Setup time for (repeated) START condition 4.7 μs
t(S-HD)
t(RS-HD)		 Hold time for (repeated) START condition 4 μs
t(D-SU) Data setup time 250 ns
t(D-HD) Data hold time 0 900 ns
t(SCL-R) Rise time of SCL signal 20 + 0.1 CB 1000 ns
t(SCL-R1) Rise time of SCL signal after a repeated START condition and after an acknowledge bit 20 + 0.1 CB 1000 ns
t(SCL-F) Fall time of SCL signal 20 + 0.1 CB 1000 ns
t(SDA-R) Rise time of SDA signal 20 + 0.1 CB 1000 ns
t(SDA-F) Fall time of SDA signal 20 + 0.1 CB 1000 ns
t(P-SU) Setup time for STOP condition 4 μs
CB Capacitive load for SDA and SCL lines 400 pF
VNH Noise margin at high level for each connected device (including hysteresis) 0.2 VDD V
PCM1681 PCM1681-Q1 int_rd_ti_2_les211.gifFigure 1. Interface Timing

7.8 Typical Characteristics

All specifications at TA = +25°C, VCC = 5 V, VDD = 3.3 V, fS = 48 kHz, system clock = 512 fS, and 24-bit data, unless otherwise noted.

7.8.1 Digital Filter (De-Emphasis Off)

PCM1681 PCM1681-Q1 g001_les211.gifFigure 2. Frequency Response (Sharp Roll-off)
PCM1681 PCM1681-Q1 g003_les211.gifFigure 4. Frequency Response (Slow Roll-off)
PCM1681 PCM1681-Q1 g002_les211.gifFigure 3. Passband Frequency Response (Sharp Roll-off)
PCM1681 PCM1681-Q1 g004_les211.gifFigure 5. Transition Characteristics (Slow Roll-off)

7.8.2 De-Emphasis Filter

PCM1681 PCM1681-Q1 sles133_g005.gifFigure 6. De-Emphasis
PCM1681 PCM1681-Q1 sles133_g007.gifFigure 8. De-Emphasis
PCM1681 PCM1681-Q1 sles133_g009.gifFigure 10. De-Emphasis
PCM1681 PCM1681-Q1 sles133_g006.gifFigure 7. De-Emphasis Error
PCM1681 PCM1681-Q1 sles133_g008.gifFigure 9. De-Emphasis Error
PCM1681 PCM1681-Q1 sles133_g010.gifFigure 11. De-Emphasis Error

7.8.3 Analog Filter

PCM1681 PCM1681-Q1 sles211_g011.gifFigure 12. Analog Filter Performance

7.8.4 Analog Dynamic Performance

7.8.4.1 Supply Voltage Characteristics

PCM1681 PCM1681-Q1 sles211_g012.gifFigure 13. Total Harmonic Distortion + Noise vs Supply Voltage
PCM1681 PCM1681-Q1 sles211_g014.gifFigure 15. Signal-to-Noise Ratio vs Supply Voltage
PCM1681 PCM1681-Q1 sles211_g013.gifFigure 14. Dynamic Range vs Supply Voltage
PCM1681 PCM1681-Q1 sles211_g015.gifFigure 16. Channel Separation vs Supply Voltage

7.8.4.2 Temperature Characteristics

PCM1681 PCM1681-Q1 sles211_g016.gifFigure 17. Total Harmonic Distortion + Noise vs Temperature
PCM1681 PCM1681-Q1 sles211_g018.gifFigure 19. Signal-to-Noise Ratio vs Temperature
PCM1681 PCM1681-Q1 sles211_g017.gifFigure 18. Dynamic Range vs Temperature
PCM1681 PCM1681-Q1 sles211_g019.gifFigure 20. Channel Separation vs Temperature