PCM2912A Burr-Brown Audio www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 AUDIO CODEC WITH USB INTERFACE, MONO MICROPHONE INPUT AND STEREO HEADPHONE OUTPUT FEATURES 1 • On-Chip USB Interface: – With Full-Speed Transceivers – Fully Compliant with USB 2.0 Specification – Certified By USB-IF – Partially Programmable Descriptors – Adaptive Isochronous Transfer for Playback – Asynchronous Isochronous Transfer for Record – Bus Powered • 16-Bit Delta-Sigma ADC and DAC • Sampling Rate: – 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz • On-Chip Clock Generator: – With Single 6-MHz Clock Source • Mono ADC with Microphone Input – Analog Performance at VBUS = 5 V: – THD+N: 0.01% – SNR: 92 dB – Dynamic Range: 90 dB – Decimation Digital Filter – Passband Ripple: ±0.05 dB – Stop-Band Attenuation: –65 dB – Single-Ended Voltage Input – Antialiasing Filter Included – Digital HPF Included – Microphone Bias, Microphone Amplifier, and Input PGA • Stereo DAC With Headphone Output – Analog Performance at VBUS = 5.0 V: – THD+N: 0.01% (RL > 10 kΩ) – THD+N: 0.02% (RL = 32 Ω) – SNR: 92 dB – Dynamic Range: 90 dB – PO: 13 mW (RL = 32 Ω) – PO: 25 mW (RL = 16 Ω) 234 • • • • – Oversampling Digital Filter – Passband Ripple: ±0.1 dB – Stop-Band Attenuation: –43 dB – Single-Ended Voltage Output – Analog LPF Included – Sidetone PGA, Output PGA, and HP Amplifier Multifunctions: – Suspend, Playback, and Record Status Flag – Microphone Amplifier, Mute, and Gain Control Pop/Click Noise-Free Single Power-Supply: 5 V Typ (VBUS) Package: 32-Pin TQFP APPLICATIONS • • • • • • • USB Headset USB Headphone USB Speaker USB Featured Consumer Audio Product USB Audio Interface Box USB Monitor Video Conference System DESCRIPTION The PCM2912A is the Texas Instruments single-chip, USB stereo audio codec with a USB 2.0-compliant full-speed protocol controller and an analog front-end (AFE) function for headset applications. The USB protocol controller works with no software code, but USB descriptors can be modified on request (1). The PCM2912A employs SpAct™ architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and record sampling rates with low clock jitters. (1) The descriptor can be modified by changing a mask; contact your local representative for details. 1 2 3 4 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. SpAct is a trademark of Texas Instruments. Audio Precision, System Two are trademarks of Audio Precision, Inc.. All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2008, Texas Instruments Incorporated PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... 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. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ABSOLUTE MAXIMUM RATINGS (1) (2) Over operating free-air temperature range (unless otherwise noted). PARAMETER Supply voltage VBUS Ground voltage differences: BGND, PGND, AGND, HGND, DGND Input voltage : VCCP, VCCA, VCCL, VCCR, VDD UNIT –0.3 to +6.5 V ±0.1 V –0.3 to 4 V –0.3 to 6.5 V D+, D–, XTI, XTO, MMUTE, TEST0, TEST1, POWER, MAMP, SSPND –0.3 to 4 V MBIAS, VIN, VCOM1, VCOM2, VOUTL, VOUTR, FR, FL –0.3 to 4 V ±10 mA Ambient temperature under bias –40 to +125 °C Storage temperature –55 to +150 °C Junction temperature +150 °C Digital input voltage Analog input voltage PLAY, REC. PCM2912A Input current (any pins except supplies) (1) (2) 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. All voltage values are with respect to network ground terminal. RECOMMENDED OPERATING CONDITIONS Over operating free-air temperature range (unless otherwise noted). PARAMETER VBUS Supply voltage MIN 4.35 Analog input voltage, full scale (–0 dB) 5.00 5.25 UNIT V VPP TTL Digital input clock frequency 5.997 Analog output load resistance 2 MAX 0.43 VCCA Digital input logic family TA NOM 6.000 6.003 MHz Ω 32 Analog output load capacitance 100 pF Digital output load capacitance 10 pF +70 °C Operating free-air temperature –25 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 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. PCM2912A PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DIGITAL INPUT/OUTPUT Host interface Apply USB revision 2.0, full-speed Audio data format USB isochronous data format INPUT LOGIC VIH IIH (1) (2) IIL 2 Input logic level VIL (1) (2) IIH (3) Input logic current IIL (3) 3.3 0.8 VIN = 3.3 V ±10 VIN = 0 V ±10 VIN = 3.3 V 65 VIN = 0 V 100 ±10 VDC µA µA OUTPUT LOGIC VOH (1) IOH = –10 mA VOL (1) IOL = 10 mA VOH (4) Output logic level IOH = –2 mA 2.9 0.3 2.8 VDC (4) IOL = 2 mA VOL (5) IOL = 8 mA 0.5 VIN = 5 V ±10 VOL IOH (5) Output leak current 0.5 µA CLOCK FREQUENCY Input clock frequency, XTI 5.997 6.000 6.003 MHz MICROPHONE BIAS Output voltage 0.75 VCCA Output current Output noise (1) (2) (3) (4) (5) RL = 1 kΩ VDC 2 mA 5 µVRMS Pins 3, 4: D–, D+. Pins 8, 23, 24, 27, 28: XTI, MAMP, POWER, TEST1, TEST0 Pin 30: MMUTE Pins 7, 29: XTO, SSPND Pins 31, 32: REC, PLAY. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 3 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... 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. PCM2912A PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG-TO-DIGITAL CONVERTER (ADC) CHARACTERISTICS Resolution Audio data channel Sampling frequency ADC Dynamic Performance THD+N SNR 16 Bits 1 Channel 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz (6) Total harmonic distortion plus noise VIN = –1 dB of 0.43 VCCA Dynamic range A-weighted 82 90 dB Signal-to-noise ratio A-weighted 84 92 dB 0.01 0.02 % ADC DC Accuracy Gain error ±2 Bipolar zero error ±0 ±10 % of FSR % of FSR Analog Input Input voltage 0.43 VCCA Center voltage Antialiasing filter frequency response VPP 0.5 VCCA –3 dB fIN = 20 kHz V 150 kHz –0.08 dB Microphone Amplifier Gain 0 Input impedance 20 20 dB kΩ Input PGA Gain range –12 Gain step size 30 1 dB dB ADC Digital Filter Performance Passband 0.454 fS Stop band 0.583 fS Hz Passband ripple ±0.02 Stop-band attenuation –65 Delay time HPF frequency response (6) 4 dB dB 17.4/fS –3 dB Hz 0.078 fS/1000 s Hz fIN = 1 kHz, using Audio Precision™ System Two™, RMS mode with 20-kHz LPF, 400-Hz HPF in calculation. Mic amp = 0 dB, PGA = 0 dB. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 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. PCM2912A PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DIGITAL-TO-ANALOG CONVERTER (DAC) CHARACTERISTICS Resolution Audio data channel Sampling frequency DAC Dynamic Performance THD+N SNR 16 Bits 1, 2 Channel 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz (7) Total harmonic distortion plus noise RL > 10 kΩ, VOUT = 0 dB of 0.6 VCCA 0.01 0.02 % RL = 32 Ω, VOUT = 0 dB of 0.55 VCCA 0.02 0.05 % Dynamic range EIAJ, A-Weighted 82 90 dB Signal-to-noise ratio EIAJ, A-Weighted 84 92 dB Channel separation RL > 10 kΩ 80 88 dB DAC DC Accuracy Gain mismatch channel-to-channel ±2 ±10 % of FSR Gain error ±2 ±10 % of FSR Bipolar zero error ±3 % of FSR Analog Output Output voltage RL > 10 kΩ 0.6 VCCA RL = 32 Ω 0.55 VCCA Center voltage VPP 0.5 VCCA Output power Load impedance (AC coupling) LPF frequency response RL = 32 Ω 13 RL = 16 Ω 25 Line 10 Headphone 16 V mW kΩ 32 Ω –3 dB 140 kHz f = 20 kHz –0.1 dB Sidetone Programmable Attenuator Gain range –76 Gain step size 0 1 dB dB Output Programmable Attenuator Gain range –76 Gain step size Analog Loopback Performance THD+N SNR 0 1 dB dB (8) Total harmonic distortion plus noise RL > 10 kΩ, VIN = 0 dB of 0.43 VCCA 0.01 0.02 % RL = 32 Ω, VIN = 0 dB of 0.43 VCCA 0.02 0.05 % Dynamic range EIAJ, A-weighted 82 90 dB Signal-to-noise ratio EIAJ, A-weighted 84 92 dB DAC Digital Filter Performance Passband 0.445 fS Stop band 0.555 fS Hz Passband ripple ±0.1 Stop-band attenuation –43 Delay time (7) (8) Hz dB dB 14.3/fS s fOUT = 1 kHz, using Audio Precision System Two, RMS mode with 20-kHz LPF, 400-Hz HPF. Output attenuator = 0 dB, Sidetone = Mute. MIC Amp = 0 dB, Sidetone attenuator = 0 dB, Output attenuator = 0 dB. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 5 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... 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. PCM2912A PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 4.35 5.0 5.25 VDC 85 100 mA Suspend mode (9) 220 300 µA ADC, DAC Operation 425 500 mW Suspend mode (9) 0.8 1 mW 3.3 3.6 VDC +85 °C POWER-SUPPLY REQUIREMENTS VBUS Voltage range Supply current Power dissipation VCCP,VCCL, VCCR,VCCA, VDD Bus-powered ADC, DAC operation (RL = 32 Ω) Internally-generated power supply voltage (10) 3 TEMPERATURE RANGE Operation temperature θJA Thermal resistance –25 32-pin TQFP 80 °C/W (9) Under USB suspend state (10) Pins 5, 15, 19, 21, 26: VDD, VCCA, VCCL, VCCR, VCCP. 6 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 PIN ASSIGNMENTS POWER MAMP VOUTR VCCR HGND VCCL VOUTL MBIAS PJT PACKAGE TQFP-32 (TOP VIEW) 24 23 22 21 20 19 18 17 PGND 25 16 VIN VCCP 26 15 VCCA TEST1 27 14 NC TEST0 28 13 AGND PCM2912A REC 31 10 FR PLAY 32 9 FL 1 2 3 4 5 6 7 8 XTI VCOM1 XTO 11 DGND 30 D+ MMUTE VDD VCOM2 D- 12 VBUS 29 BGND SSPND Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 7 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com TERMINAL FUNCTIONS TERMINAL NAME PJT I/O BGND 1 — Reference for internal regulator. VBUS 2 — Connect to USB power (VBUS) D– 3 I/O USB differential input/output minus (1) D+ 4 I/O USB differential input/output plus (1) VDD 5 — Digital power supply (2) DGND 6 XTO 7 O Crystal oscillator output XTI 8 I Crystal oscillator input (3) FL 9 — External filter pin of L-channel (optional) FR 10 — External filter pin of R-channel (optional) VCOM1 11 — Common voltage for ADC, DAC, and analog front-end (VCCA/2). Decoupling capacitor should be connected to AGND. VCOM2 12 — Common voltage for headphone (VCCA/2). Decoupling capacitor should be connected to AGND. AGND 13 — Analog ground NC 14 — Not connected VCCA 15 — Analog power supply VIN 16 I ADC microphone input MBIAS 17 O Microphone bias output (0.75 VCCA) VOUTL 18 O Headphone output for L-channel VCCL 19 — Analog power supply for headphone amplifier of L-channel (2) HGND 20 — Analog ground for headphone amplifier VCCR 21 — Analog power supply for headphone amplifier of R-channel (2) VOUTR 22 O Headphone output for R-channel MAMP 23 I Microphone preamplifier gain control (LOW: Preamplifier off, HIGH: Preamplifier on = +20 dB) (3) POWER 24 I Power consumption declaration select pin (LOW: 100 mA, HIGH: 500 mA) PGND 25 — Analog ground for microphone bias, microphone amplifier, and PGA VCCP 26 — Analog power supply for PLL (2) TEST1 27 I Test pin. Must be set to HIGH (3) TEST0 28 I Test pin. Must be set to LOW (3) SSPND 29 O Suspend flag (LOW: Suspend, HIGH: Operational state) MMUTE 30 I Microphone mute control, active HIGH (LOW: Mute off, HIGH: Mute on) (4) REC 31 O Status output for record (LOW: Record, FLASH: Mute on recode, HIGH: Stop) (5) PLAY 32 O Status output for playback (LOW: Playback, FLASH: Mute on playback, HIGH: Stop) (5) (1) (2) (3) (4) (5) 8 DESCRIPTIONS Digital ground (3) LV-TTL level Connect decouple capacitor to corresponding ground. 3.3-V CMOS level input. 3.3-V CMOS level input with internal pulldown. 5-V tolerant, open-drain. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 FUNCTIONAL BLOCK DIAGRAM BGND VCCA/VCCP/VCCL/VCCR/VDD VREF 5 V to 3.3 V Voltage Regulator AGND/ HGND/ PGND/DGND Power Manager SSPND VBUS MIC BIAS MBIAS VIN MIC AMP PGA + 30 dB ~ –12 dB in 1 dB steps FIFO ADC +20/0 dB ISO-In Endpoint XCVR D+ D– Selector USB SIE Analog PLL VCOM2 VCOM1 S FL MMUTE PLAY Selector DAC VOUTR FIFO S HP AMP 15 mW (at 32 W) ATT 0 dB ~ –76 dB in 1 dB steps with Mute ISO-Out Endpoint USB Protocol Controller FR PLL (x16) POWER MAMP Analog PLL ATT 0 dB ~ –76 dB in 1 dB steps with Mute VOUTL Control Endpoint 96 MHz REC TEST0 TEST1 Tracker (SpAct® ) 6.000 MHz XTI XTO Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 9 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: INTERNAL FILTER All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted. ADC Digital Decimation Filter Frequency Response OVERALL CHARACTERISTIC STOP BAND ATTENUATION 0 0 -20 Amplitude - dB Amplitude - dB -40 -80 -40 -60 -120 -80 -100 -160 0 8 16 24 32 0 0.4 0.6 0.8 Figure 1. Figure 2. PASSBAND RIPPLE TRANSIENT BAND RESPONSE 0.2 0 0 -4 -0.2 -0.4 -0.6 1.0 -8 -12 -16 -0.8 0 10 0.2 Normalized Frequency - x fS Amplitude - dB Amplitude - dB Normalized Frequency - x fS 0.1 0.2 0.3 0.4 0.5 -20 0.46 0.48 0.50 0.52 Normalized Frequency - x fS Normalized Frequency - x fS Figure 3. Figure 4. Submit Documentation Feedback 0.54 Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 TYPICAL CHARACTERISTICS: INTERNAL FILTER (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted. ADC Digital High-Pass Filter Frequency Response PASSBAND CHARACTERISTIC 0 -20 -0.2 Amplitude - dB Amplitude - dB STOP BAND CHARACTERISTIC 0 -40 -60 -0.4 -0.6 -0.8 -80 -100 -1.0 0 0.1 0.2 0.3 Normalized Frequency - x fS/1000 0 0.4 1 2 3 4 Normalized Frequency - x fS/1000 Figure 5. Figure 6. ADC Analog Antialiasing Filter Frequency Response PASSBAND CHARACTERISTIC 0 -10 -0.2 Amplitude - dB Amplitude - dB STOP BAND CHARACTERISTIC 0 -20 -30 -0.4 -0.6 -0.8 -40 -1.0 -50 1 10 100 1000 10000 0.01 0.1 1 10 100 f - Frequency - kHz f - Frequency - kHz Figure 7. Figure 8. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 11 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS: INTERNAL FILTER (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted. DAC Digital Interpolation Filter Frequency Response PASSBAND RIPPLE 0.2 -20 0 Amplitude - dB Amplitude - dB STOP BAND ATTENUATION 0 -40 -60 -0.2 -0.4 -80 -0.6 -100 -0.8 0 1 2 3 0 4 0.1 0.2 0.3 0.4 0.5 Normalized Frequency - x fS Normalized Frequency - x fS Figure 9. Figure 10. TRANSIENT BAND RESPONSE 0 Amplitude - dB -4 -8 -12 -16 -20 0.46 0.48 0.50 0.52 0.54 Normalized Frequency - x fS Figure 11. 12 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 TYPICAL CHARACTERISTICS: INTERNAL FILTER (continued) All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted. DAC Analog FIR Filter Frequency Response PASSBAND CHARACTERISTIC 0.2 -10 0 Amplitude - dB Amplitude - dB STOP BAND CHARACTERISTIC 0 -20 -30 -40 -0.2 -0.4 -0.6 -50 -0.8 0 8 16 24 32 0 Normalized Frequency - x fS 0.1 0.2 0.3 0.4 0.5 Normalized Frequency - x fS Figure 12. Figure 13. DAC Analog Low-Pass Filter Frequency Response PASSBAND CHARACTERISTIC 0 -10 -0.2 Amplitude - dB Amplitude - dB STOP BAND CHARACTERISTIC 0 -20 -30 -40 -0.4 -0.6 -0.8 -50 -1.0 1 10 100 1000 10000 0.01 f - Frequency - kHz 0.1 1 10 100 f - Frequency - kHz Figure 14. Figure 15. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 13 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data, unless otherwise noted. ADC THD+N AT –1 dB vs TEMPERATURE DYNAMIC RANGE AND SIGNAL-TO-NOISE RATIO vs TEMPERATURE 96 0.009 Dynamic Range and SNR - dB THD+N - Total Harmonic Distortion + Noise - % 0.010 0.008 0.007 0.006 0.005 94 SNR 92 Dynamic Range 90 88 0.004 0.003 -50 86 -25 0 25 50 75 100 -50 -25 TA - Free-Air Temperature - °C Figure 17. THD+N AT –1 dB vs SUPPLY VOLTAGE DYNAMIC RANGE AND SIGNAL-TO-NOISE RATIO vs SUPPLY VOLTAGE 98 96 Dynamic Range and SNR - dB THD+N - Total Harmonic Distortion + Noise - % 0.009 0.008 0.007 0.006 0.005 94 SNR 92 Dynamic Range 90 88 0.004 0.003 4.4 4.6 4.8 5.0 5.2 5.4 86 4.2 VBUS - Supply Voltage - V Figure 18. 14 100 Figure 16. 0.010 4.2 0 25 50 75 TA - Free-Air Temperature - °C 4.4 4.6 4.8 5.0 5.2 5.4 VBUS - Supply Voltage - V Figure 19. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 TYPICAL 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. DYNAMIC RANGE AND SIGNAL-TO-NOISE RATIO vs SAMPLING FREQUENCY 0.010 98 0.009 96 Dynamic Range and SNR - dB THD+N - Total Harmonic Distortion + Noise - % THD+N AT –1 dB vs SAMPLING FREQUENCY 0.008 0.007 0.006 0.005 94 SNR 92 90 Dynamic Range 88 0.004 0.003 30 35 40 45 86 30 50 35 40 45 50 fS - Sampling Frequency - kHz fS - Sampling Frequency - kHz Figure 20. Figure 21. THD+N AT 0 dB vs TEMPERATURE DYNAMIC RANGE AND SIGNAL-TO-NOISE RATIO vs TEMPERATURE DAC 96 0.009 94 Dynamic Range and SNR - dB THD+N - Total Harmonic Distortion + Noise - % 0.010 0.008 0.007 0.006 0.005 SNR 92 Dynamic Range 90 88 0.004 0.003 -50 -25 0 25 50 75 100 86 -50 TA - Free-Air Temperature - °C Figure 22. -25 0 25 50 75 100 TA - Free-Air Temperature - °C Figure 23. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 15 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com TYPICAL 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. DYNAMIC RANGE AND SIGNAL-TO-NOISE RATIO vs SUPPLY VOLTAGE 0.010 98 0.009 96 Dynamic Range and SNR - dB THD+N - Total Harmonic Distortion + Noise - % THD+N AT 0 dB vs SUPPLY VOLTAGE 0.008 0.007 0.006 0.005 94 SNR 92 Dynamic Range 90 88 0.004 86 0.003 4.2 4.4 4.6 4.8 5.0 5.2 4.2 5.4 5.0 5.2 5.4 Figure 25. THD+N AT 0 dB vs SAMPLING FREQUENCY DYNAMIC RANGE AND SIGNAL-TO-NOISE RATIO vs SAMPLING FREQUENCY 0.010 98 0.009 96 Dynamic Range and SNR - dB THD+N - Total Harmonic Distortion + Noise - % 4.8 Figure 24. 0.008 0.007 0.006 0.005 0.004 0.003 35 40 45 50 94 SNR 92 Dynamic Range 90 88 86 30 fS - Sampling Frequency - kHz Figure 26. 16 4.6 VBUS - Supply Voltage - V VBUS - Supply Voltage - V 30 4.4 35 40 45 50 fS - Sampling Frequency - kHz Figure 27. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 TYPICAL 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. Supply Current SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY CURRENT vs SAMPLING FREQUENCY 100 0.4 90 Operational Current 80 0.3 Suspend Current 70 0.2 60 0.1 50 4.2 4.4 4.6 4.8 5.0 5.2 Operational Current - mA Operational Current - mA 90 0.5 Suspend Current - mA 100 80 70 60 0 5.4 50 30 35 40 45 50 fS - Sampling Frequency - kHz VBUS - Supply Voltage - V Figure 28. Figure 29. SUPPLY CURRENT vs TEMPERATURE AT SUSPEND MODE 0.40 Suspend Current - mA 0.35 USB spec limit for device = 0.3 mA 0.30 0.25 0.20 0.15 0.10 -40 -20 0 20 40 60 80 100 TA - Free-Air Temperature - °C Figure 30. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 17 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com GENERAL DESCRIPTION USB INTERFACE Control data and audio data are transferred to the PCM2912A via D+ (pin 4) and D– (pin 3). All data transferred to/from the PCM2912A are performed at full speed. Table 1 summarizes the device descriptor. The device descriptor can be modified on request. Table 1. Device Descriptor USB revision 2.0 compliant Device class 0x00 (device defined in interface level) Device sub class 0x00 (not specified) Device protocol 0x00 (not specified) Max packet size for endpoint 0 8-byte Vendor ID 0x08BB Product ID 0x2912 Device release number 0x0100 (1.00) Number of configurations 1 Vendor string String #1 (refer to Table 3) Product string String #2 (refer to Table 3) Serial number Not supported Table 2 lists the configuration descriptor. The configuration descriptor can be modified on request. Table 2. Configuration Descriptor Interface Three interfaces Power attribute 0x80 (Bus powered, no remote wakeup) Max power 0x32 (100 mA at POWER = Low) / 0xFA (500mA at POWER = High) Table 3 summarizes the string descriptor. The string descriptor can be modified on request. Table 3. String Descriptor 18 #0 0x0409 #1 Burr-Brown from TI #2 USB audio CODEC Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 Device Configuration Figure 31 illustrates the USB audio function topology. The PCM2912A has three interfaces. Each interface is constructed with some alternative settings. Endpoint #0 Default Endpoint FU Endpoint #1 (IF #1) IT S OT TID3 UID4 TID6 Audio Streaming Interface Analog Out UID5 FU IT TID1 UID2 Analog In FU Endpoint #1 (IF #1) OT S IT TIDB UIDA TID7 Audio Streaming Interface UID8 Standard Audio Control Interface (IF #0) Figure 31. USB Audio Function Topology Interface #0 Interface #0 is the control interface. Alternative setting #0 is the only possible setting for interface #0. Alternative setting #0 describes the standard audio control interface. The audio control interface is constructed with a series of terminal connections. The PCM2912A has the following 10 terminals: • Input terminal (Terminal ID#1) for audio analog input for sidetone • Feature unit (Unit ID#2) for sidetone PGA • Input terminal (Terminal ID#3) for isochronous out stream • Mixer unit (Unit ID#4) for sidetone mixing • Feature unit (Unit ID#5) for analog output PGA • Output terminal (Terminal ID#6) for audio analog output • Input terminal (Terminal ID#7) for audio analog input • Feature unit (Unit ID#8) for analog input PGA • Mixer unit (Unit ID#A) for analog input • Output terminal (Terminal ID#B) for isochronous in stream Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 19 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com Input terminal #3 is defined as USB stream (terminal type 0x0101). Input terminal #3 can accept two-channel audio streams constructed by the left and right channels. Output terminal #6 is defined as a speaker (terminal type 0x0301). Input terminals #1 and #7 are defined as Microphone (terminal type 0x0201). Physically, these two input terminals are the same input, but logically duplicated. Output terminal B is defined as a USB stream (terminal type 0x0101). Output terminal B is a single-channel audio stream. Mixer unit #4 multiplexes the analog input (sidetone) and the audio data of the digital-to-analog converter (DAC). Mixer unit A is placed in front of output terminal B. Mixer unit A has no impact on recording data. Mixer units #4 and A do not have programming capability. Feature unit #5 supports the following sound control features for analog outputs: • Volume control • Mute control The built-in volume controller can be manipulated by an audio-class-specific request from 0 dB to –76 dB in steps of 1 dB. An individual (L and R) channel can be set for different values. The built-in mute controller can be manipulated by an audio-class-specific request. Only the master mute control request is acceptable. Feature unit #2 supports the following sound control features for analog input (sidetone): • Volume control • Mute control The built-in volume controller can be manipulated by an audio-class-specific request from 0 dB to –76 dB in 1-dB steps. Only the master volume control is acceptable. The built-in mute controller can be manipulated by audio-class-specific request. Only the master mute control request is acceptable. Feature unit #8 supports the following sound control features for analog input (microphone record input): • Volume control • Mute control The built-in analog volume controller can be manipulated by an audio-class-specific request from +30 dB to –12 dB in 1-dB steps. The built-in mute controller can be manipulated by an audio-class-specific request. Only the master mute control request is acceptable. Interface #1 Interface #1 is the audio streaming interface for data output. Table 4 lists the three alternative settings for Interface #1. Alternative setting #0 is the zero bandwidth setting. All other alternative settings are operational settings. Table 4. Interface #1 Alternative Settings ALTERNATIVE SETTING DATA FORMAT 00 TRANSFER MODE SAMPLING RATE (kHz) Zero Bandwidth 01 16 bit Stereo 2s complement (PCM) Adaptive 8, 11.025, 16, 22.05, 32, 44.1, 48 02 16 bit Mono 2s complement (PCM) Adaptive 8, 11.025, 16, 22.05, 32, 44.1, 48 Interface #2 Interface #2 is the audio streaming interface for data output. Table 5 shows the two alternative settings for Interface #2. Alternative setting #0 is the Zero Band Width setting. Alternative setting #1 is an operational setting. Table 5. Interface #2 Alternative Settings ALTERNATIVE SETTING DATA FORMAT 00 01 20 TRANSFER MODE SAMPLING RATE (kHz) Zero Bandwidth 16 bit Mono 2s complement (PCM) Submit Documentation Feedback Asynchronous 8, 11.025, 16, 22.05, 32, 44.1, 48 Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 Endpoints The PCM2912A has the following three endpoints: • Control endpoint (EP #0) • Isochronous out audio data stream endpoint (EP #1) • Isochronous in audio data stream endpoint (EP #2) The control endpoint is the default endpoint. The control endpoint controls all functions of the PCM2912A by the standard USB request and USB audio class-specific request from the host. The isochronous out audio data stream endpoint is an audio sink endpoint, which receives the PCM audio data. The isochronous out audio data stream endpoint accepts the asynchronous transfer mode. The isochronous in audio data stream endpoint is an audio source endpoint, which transmits the PCM audio data. The isochronous in audio data stream endpoint uses synchronous transfer mode. Internal Regulator All required power sources are generated by five internal regulators. Each regulator generates 3.3 V (typical, without load) from VBUS (pin 2). Each regulator has an output pin and a ground return pin (as described in Table 6); this pair must be decoupled with an appropriate capacitor. Note that this capacitance affects inrush-current limitation. One band-gap reference circuit supplies reference voltage for all regulators. BGND (pin 1) is provided for reference ground of the band-gap reference. Table 6. Internal Regulator Summary SUPPLIED CIRCUIT OUTPUT RETURN Digital VDD (pin 5) DGND (pin 6) Analog VCCA (pin 15) AGND (pin 13) Headphone (L-ch) VCCL (pin 19) HGND (pin 20) Headphone (R-ch) VCCR (pin 21) HGND (pin 20) PLL VCCP (pin 26) PGND (pin 25) Clock and Reset The PCM2912A requires a 6-MHz (±500 ppm) clock for USB function and audio function, which can be generated from a built-in crystal oscillator with a 6-MHz crystal resonator. The 6-MHz crystal resonator must be connected to XTI (pin 8) and XTO (pin 7) with one high (1-MΩ) resistor and two small capacitors, whose capacitance depends on the load capacitance of the crystal resonator. An external clock can be supplied through XTI; if an external clock is supplied, XTO must be left open. Because there is no clock disabling signal, using the external clock supply is not recommended. SSPND (pin 29) is unable to use clock disabling. The PCM2912A has an internal power-on-reset circuit, which works automatically when VBUS (pin 2) exceeds 2.5 V, typical (2.2 V to 2.7 V), and approximately 700 µs is required until the internal reset is released. DAC The PCM2912A has a stereo delta-sigma DAC that uses a 64-fS oversampling technique with an 8-fS oversampling digital filter. DAC outputs are provided through the headphone amplifier; VOUTL (pin 18) and VOUTR (pin 22) provide 13 mW at 32 Ω and 0.6 VCCL/VCCR VPP at a 10-kΩ load. ADC The PCM2912A has a mono delta-sigma ADC that uses a 64-fS oversampling technique with a 1/64-fS decimation digital filter. The microphone input, VIN (pin 16), is fed to the ADC through a +20-dB microphone amplifier and the PGA, which has +30 dB to –12 dB in 1-dB steps. Microphone Bias The PCM2912A has a microphone bias generator, which provides a low-noise, 0.75-VCCA, 2-mA source current output with appropriate output impedance for electret-microphone driving. This output, MBIAS (pin 17), should be bypassed to AGND (pin 13) through an appropriate capacitor to reduce the output noise level. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 21 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com Microphone Amplifier The PCM2912A has a low-noise, single-ended, mono microphone amplifier with a mute function that is controlled by MUTE (pin 30). The signal gain is selectable by MAMP (pin 23). The noise level at the input node is 5 µVRMS, and the input impedance is 20 kΩ. Input PGA The PCM2912A also has a low-noise input, programmable gain amplifier (PGA) for the microphone amplifier output/ADC input, with a gain range of +30 dB to –12 dB in 1dB/step. Sidetone Programmable Attenuator The PCM2912A has a low-noise, sidetone programmable attenuator with a mute function for the sidetone signal path (microphone amplifier output to output PGA input), and a gain range of 0 dB to –76 dB in 1 dB/step. Output Programmable Attenuator The PCM2912A has a low-noise output programmable attenuator with a mute function for mixed signal, which affects DAC output signal and sidetone signal. The output PGA gain range is 0 dB to –76 dB in 1 dB/step. VCOM1 and VCCM2 VCOM2 (pin 12) is provided for the center voltage of the headphone amplifier. VCOM1 (pin 11) is provided for the center voltage of all other analog circuits. Each VCOM pin must be decoupled with an appropriate capacitor. Because the headphone output is disconnected when entering the suspend state, determining the capacitance is important to prevent pop noise, especially for VCOM2 (pin 12). The equivalent resistance of VCOM2 is 500 kΩ, and VCOM1 is 15 kΩ. Filter Pins FL (pin 9) and FR (pin 10) are provided to make a low-pass filter (LPF) to decrease the DAC outband noise, as shown in Figure 32. This filter is optional. Side Tone 20 kW 20 kW 10 kW 10 kW DAC – + VCOM FR/FL CF Figure 32. Filter Circuit 22 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 INTERFACE SEQUENCE Power-On, Attach, and Play Back Sequence The PCM2912A is ready for setup when the reset sequence has finished and the USB bus is attached. After a connection has been established, the PCM2912A is ready to accept USB audio data. While waiting for the audio data (that is, in an idle state), the analog output is set to bipolar zero (BPZ). When receiving the audio data, the PCM2912A stores the first audio packet, which contains 1-ms audio data, into the internal storage buffer. The PCM2912A starts playing the audio data when the subsequent Start of Frame (SOF) packet is detected, as shown in Figure 33. 5.0 V (typ) 2.5 V (typ) VBUS (pin 2) 0V Bus Reset D+ (pin 4), D- (pin 3) 1st Audio Data Set Configuration 2nd Audio Data Bus Idle SOF SOF SOF SSPND (pin 29) VOUTL (pin 18), VOUTR (pin 22) 700 ms Device Setup 1 ms Internal Reset Ready for Setup Ready for Playback Figure 33. Initial Sequence Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 23 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com Play, Stop, and Detach Sequence When the host finishes or aborts the play back process, the PCM2912A stops playing after last audio data has played, as shown in Figure 34. VBUS (pin 2) Audio Data Audio Data Last Audio Data D+ (pin 4), D- (pin 3) SOF SOF SOF SOF SOF VOUTL (pin 18), VOUTR (pin 22) 1 ms Detach Figure 34. Play, Stop, and Detach Record Sequence Figure 35 illustrates how the PCM2912A records the audio into the internal memory after receiving the SET_INTERFACE command. SET_INTERFACE IN token Audio data IN token Audio data IN token Audio data D+ (pin 4), D– (pin 3) SOF SOF SOF SOF SOF VIN (pin 16) 1ms Figure 35. Record Sequence 24 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 Suspend and Resume Sequence The PCM2912A enters a suspend state when it sees a constant idle state on the USB bus after approximately 5 ms. When the PCM2912A enters the suspend state, the SSPND flag (pin 29) is asserted. The PCM2912A wakes up immediately after detecting the non-idle state on the USB bus. Figure 36 illustrates these actions. Idle D+ (pin 4), D- (pin 3) SSPND (pin 29) 5 ms Suspend VOUTL (pin 18), VOUTR (pin 22) Active Active 2.5 ms Figure 36. Suspend and Resume Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 25 PCM2912A SLES230 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com TYPICAL CIRCUIT CONNECTION A bus-powered (Hi-power), +20-dB microphone amplifier application example is shown in Figure 37. Headphone R11 Microphone R8 R5 C13 C16 C10 R10 R7 VOUTR VIN 16 AGND 13 29 SSPND 30 MMUTE 31 REC 32 PLAY PCM2912A C7 VCOM1 11 C6 FR 10 C5 2 3 4 5 6 7 8 1 PLAY VCOM2 12 XTO TEST0 XTI 28 C8 NC 14 DGND TEST1 VDD VCCP 27 C18 REC 17 MBIAS VCCA 15 26 BGND VOUTL MAMP R1 3 18 D+ R1 2 19 D- Mic Mute 20 VBUS 25 21 VCCL PGND C17 22 HGND 23 VCCR POWER 24 C9 C11 C14 C1 R1 R2 FL 9 C4 R4 X1 R3 C2 C3 L1 V BUS D– D+ GND USB Connector NOTE: X1: 6-MHz crystal resonator C1, C8, C11, C14, C17, C18: 1 µF ceramic C2, C3: 10 pF to 33 pF (depending on load capacitance of crystal resonator) C4, C5: 100 pF ceramic C6, C10: 3.3 µF C7: 0.1 µF C9: 0.22 µF electrolytic (depending on required frequency response for microphone input) C13, C16: 100 µF electrolytic (depending on required frequency response for headphone output) R1, R2: 22 Ω to 33 Ω R3: 1.5 kΩ R4: 1 MΩ R5: 1 kΩ (depending on microphone characteristic) R7, R8, R10, R11: 3.3 kΩ R12, R13: 820 Ω (depending on LED drive current) L1: 1 µH (DC resistance < 0.6 Ω) It is possible to change maximum power if total power of actual application does not require over 100 mA (set POWER = low to configure as low-power device). Figure 37. USB Headset Application NOTE: The circuit in Figure 37 is for information only. Total board design should be considered in order to meet the USB specification as a USB-compliant product. 26 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A PCM2912A www.ti.com.......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008 RELATED DOCUMENTATION FROM TEXAS INSTRUMENTS For additional information concerning the PCM2912A device, see the TI application report, Operating Envronments for PCM2912 Applications (SLAA387), available for download from www.ti.com. Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): PCM2912A 27 PACKAGE OPTION ADDENDUM www.ti.com 22-Nov-2008 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty PCM2912APJT ACTIVE TQFP PJT 32 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM PCM2912APJTR ACTIVE TQFP PJT 32 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) (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/productcontent for 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. Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 5-Dec-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device PCM2912APJTR Package Package Pins Type Drawing TQFP PJT 32 SPQ Reel Reel Diameter Width (mm) W1 (mm) 1000 330.0 16.4 Pack Materials-Page 1 A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 9.6 9.6 1.5 12.0 16.0 Q2 PACKAGE MATERIALS INFORMATION www.ti.com 5-Dec-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PCM2912APJTR TQFP PJT 32 1000 346.0 346.0 33.0 Pack Materials-Page 2 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. 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