PCM2702 BURR-BROWN | Alldatasheet

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Technical content

DIGITAL-TO-ANALOG CONVERTER with Interface

FEATURES

l 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. l ACCEPTS 16-BIT STEREO AND MONO USB AUDIO DATA STREAMS. l 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: 3.1Vp-p l 8X OVERSAMPLING DIGITAL FILTER: Passband: 0.454f S Stopband: 0.546fS Passband Ripple: ±0.002dB Stopband Attenuation: –82dB l SAMPLING RATE (F S): 32kHz, 44.1kHz, 48kHz l ON-CHIP CLOCK GENERATOR WITH SINGLE 12MHz CLOCK SOURCE l MULTI-FUNCTIONS: Digital Attenuator: 0dB to –64dB, 1dB/step Soft Mute Zero Flag Suspend Flag Playback Flag l DUAL POWER SUPPLIES: +5V for Analog portion +3.3V for Digital portion l PACKAGE: SSOP-28

DESCRIPTION

The PCM2702 is a single chip digital-to-analog con- verter offering two D/A output channels and an inte- grated USB 1.0 compliant interface controller. The newly developed SpAct™ (Sampling Period Adaptive Controlled Tracking) system recovers a stable, low- jitter clock for internal PLL and DAC operation from the USB interface audio data. The PCM2702 is based upon Burr-Brown’s Enhanced Multi-level Delta-Sigma Modulator, an 8x oversampling digital 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 Burr-Brown Corporation. © 2000 Burr-Brown Corporation PDS-1584A Printed in U.S.A. May, 2000 International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 For most current data sheet and other product information, visit www.burr-brown.com

APPLICATIONS

l STAND-ALONE USB AUDIO SPEAKERS l CRT/LCD INTEGRATED USB AUDIO SPEAKERS l USB AUDIO AMPLIFIERS l OTHER USB AUDIO APPLICATIONS PCM2702

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 Vp-p 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. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.

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) ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Burr-Brown 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 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 SPECIFIED DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER (1) MEDIA PCM2702E SSOP-28 324 0 °C to +70°C PCM2702E PCM2702E Rails "" " " " PCM2702E/2K Tape and Reel NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000 pieces of “PCM2702E/2K” will get a single 2000-piece Tape and Reel. PACKAGE/ORDERING INFORMATION 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 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

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 VBUS VDD C DGNDU DGNDC SSPND ZERO VCC L AGNDL VCC R AGNDR

TYPICAL PERFORMANCE CURVES 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

TYPICAL PERFORMANCE CURVES (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

TYPICAL PERFORMANCE CURVES (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. CHANNEL SEPEARATION vs V CC VCC (V) Channel Separation (dB) 108 106 104 102 100 SOUND-TO-NOISE RATIO vs V CC VCC (V) SNR (dB) 110 108 106 104 102 100