SRC4190IDB

SRC4190(1) SRC 419 0 SBFS023A – JUNE – REVISED JULY 2003 192kHz Stereo Asynchronous Sample Rate Converters FEATURES q AUTOMATIC SENSING OF THE INPUT-TOOUTPUT SAMPLING RATIO q WIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16 q SUPPORTS INPUT AND OUTPUT SAMPLING RATES UP TO 212kHz q DYNAMIC RANGE: 128dB (–60dbFS input, BW = 20Hz to fS /2, A-Weighted) q THD+N: –125dB (0dbFS input, BW = 20Hz to fS /2) q ATTENUATES SAMPLING AND REFERENCE CLOCK JITTER q HIGH PERFORMANCE, LINEAR PHASE DIGITAL FILTERING q FLEXIBLE AUDIO SERIAL PORTS: Master or Slave Mode Operation Supports I2S, Left Justified, Right Justified, and TDM Data Formats Supports 16, 18, 20, or 24-Bit Audio Data TDM Mode allows daisy chaining of up to eight devices q SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATA All output data is dithered from the internal 28-Bit data path q LOW GROUP DELAY OPTION FOR INTERPOLATION FILTER q SOFT MUTE FUNCTION q BYPASS MODE q POWER DOWN MODE q OPERATES FROM A SINGLE +3.3 VOLT POWER SUPPLY q SMALL SSOP-28 PACKAGE q PIN COMPATIBLE WITH THE SRC4192, AD1895, AND AD1896(2) (1) Patents Pending. (2) Refer to the Applications Information section of this data sheet for details. APPLICATIONS q q q q q q DIGITAL MIXING CONSOLES DIGITAL AUDIO WORKSTATIONS AUDIO DISTRIBUTION SYSTEMS BROADCAST STUDIO EQUIPMENT HIGH-END A/V RECEIVERS GENERAL DIGITAL AUDIO PROCESSING DESCRIPTION The SRC4190 is an asynchronous sample rate converter designed for professional and broadcast audio applications. The SRC4190 combines a wide input-to-output sampling ratio with outstanding dynamic range and low distortion. Input and output serial ports support standard audio formats, as well as a Time Division Multiplexed (TDM) mode. Flexible audio interfaces allow the SRC4190 to connect to a wide range of audio data converters, digital audio receivers and transmitters, and digital signal processors. The SRC4190 is a standalone pin-programmed device, with control pins for mode, data format, mute, bypass, and low group delay functions. The SRC4190 may be operated from a single +3.3V power supply. A separate digital I/O supply (VIO) operates over the +1.65V to +3.6V supply range, allowing greater flexibility when interfacing to current and future generation signal processors and logic devices. The SRC4190 is available in a SSOP-28 package. 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. All 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 Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2003, Texas Instruments Incorporated www.ti.com ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage, VDD .......................................................... –0.3V to +4.0V Supply Voltage, VIO ........................................................... –0.3V to +4.0V Digital Input Voltage .......................................................... –0.3V to +4.0V Operating Temperature Range ........................................ –45°C to +85°C Storage Temperature Range ......................................... –65°C to +150°C NOTE: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. ELECTROSTATIC DISCHARGE SENSITIVITY 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. PACKAGE/ORDERING INFORMATION PACKAGE DESIGNATOR(1) DB SPECIFIED TEMPERATURE RANGE –45°C to +85°C PACKAGE MARKING SRC4190I ORDERING NUMBER SRC4190IDB SRC4190IDBR TRANSPORT MEDIA, QUANTITY Rails, 50 Tape and Reel, 2000 PRODUCT SRC4190 PACKAGE-LEAD SSOP-28 " " " " " NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com. PIN CONFIGURATION (SRC4190) Top View PIN DESCRIPTIONS (SRC4190) PIN# 1 2 3 NAME LGRP RCKI N.C. SDIN BCKI LRCKI VIO DGND BYPAS IFMT0 IFMT1 IFMT2 RST MUTE RDY OWL1 OWL0 OFMT1 OFMT0 TDMI DGND VDD SDOUT LRCKO BCKO MODE0 MODE1 MODE2 DESCRIPTION Low Group Delay Control Input (Active High) Reference Clock Input No Connection Audio Serial Data Input Input Port Bit Clock I/O Input Port Left/Right Word Clock I/O Digital I/O Supply, +1.65V to VDD Digital Ground ASRC Bypass Control Input (Active High) Input Port Data Format Control Input Input Port Data Format Control Input Input Port Data Format Control Input Reset Input (Active Low) Output Mute Control Input (Active High) ASRC Ready Status Output (Active Low) Output Port Data Word Length Control Input Output Port Data Word Length Control Input Output Port Data Format Control Input Output Port Data Format Control Input TDM Data Input (Connect to DGND when not in use) Digital Ground Digital Core Supply, +3.3V Audio Serial Data Output Output Port Left/Right Word Clock I/O Output Port Bit Clock I/O Serial Port Mode Control Input Serial Port Mode Control Input Serial Port Mode Control Input LGRP RCKI N.C. SDIN BCKI LRCKI VIO DGND BYPAS IFMT0 IFMT1 IFMT2 RST MUTE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SRC4190 28 MODE2 27 MODE1 26 MODE0 25 BCKO 24 LRCKO 23 SDOUT 22 VDD 21 DGND 20 TDMI 19 OFMT0 18 OFMT1 17 OWL0 16 OWL1 15 RDY 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2 SRC4190 www.ti.com SBFS023A ELECTRICAL CHARACTERISTICS All parameters specified with TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. SRC4190 PARAMETER DYNAMIC PERFORMANCE(1) Resolution Input Sampling Frequency Output Sampling Frequency Input: Output Sampling Ratio Upsampling Downsampling Dynamic Range CONDITION MIN TYP 24 fSIN fSOUT 4 4 212 212 1:16 16:1 BW = 20Hz to fSOUT /2, –60dBFS Input fIN = 1kHz, Unweighted (add 3dB to spec for A-weighted result) 125 125 125 125 125 125 125 125 125 125 BW = 20Hz to fSOUT /2, 0dBFS Input fIN = 1kHz, Unweighted –125 –125 –125 –125 –125 –125 –125 –125 –125 –125 0 0 –128 dB dB dB dB dB dB dB dB dB dB dB Degrees dB dB dB dB dB dB dB dB dB dB dB MAX UNITS Bits kHz kHz 44.1kHz:48kHz 48kHz:44.1kHz 48kHz:96kHz 44.1kHz:192kHz 96kHz:48kHz 192kHz:12kHz 192kHz:32kHz 192kHz:48kHz 32kHz:48kHz 12kHz:192kHz Total Harmonic Distortion + Noise 44.1kHz:48kHz 48kHz:44.1kHz 48kHz:96kHz 44.1kHz:192kHz 96kHz:48kHz 192kHz:12kHz 192kHz:32kHz 192kHz:48kHz 32kHz:48kHz 12kHz:192kHz Interchannel Gain Mismatch Interchannel Phase Deviation Mute Attenuation DIGITAL INTERPOLATION FILTER CHARACTERISTICS Passband Passband Ripple Transition Band Stop Band Stop Band Attenuation Normal Group Delay (LGRP = 0) Low Group Delay (LGRP = 1) DIGITAL DECIMATION FILTER CHARACTERISTICS Passband Passband Ripple Transition Band Stop Band Stop Band Attenuation Group Delay DIGITAL I/O CHARACTERISTICS High-Level Input Voltage Low Level Input Voltage High-Level Input Current Low-Level Input Current High-Level Output Voltage Low-Level Output Voltage Input Capacitance 24-Bit Word Length, A-weighted 0.4535 x fSIN 0.5465 x fSIN –125 102.53125/fSIN 70.53125/fSIN 0.4535 x fSIN ±0.007 0.5465 x fSIN Hz dB Hz Hz dB Seconds Seconds 0.4535 x fSOUT 0.5465 x fSOUT –125 36.46875/fSOUT VIH VIL IIH IIL VOH VOL CIN 0.7 x VIO 0 0.5 0.5 IO = –4mA IO = +4mA 0.8 x VIO 0 3 0.4535 x fSOUT ±0.008 0.5465 x fSOUT Hz dB Hz Hz dB Seconds VIO 0.3 x VIO 10 10 VIO 0.2 x VIO V V µA µA V V pF NOTES: (1) Dynamic performance measured with an Audio Precision System Two Cascade or Cascade Plus. (2) fSMIN = min (fSIN, fSOUT). (3) fSMAX = max (fSIN, fSOUT). SRC4190 SBFS023A www.ti.com 3 ELECTRICAL CHARACTERISTICS (Cont.) All parameters specified with TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. SRC4190 PARAMETER SWITCHING CHARACTERISTICS Reference Clock Timing RCKI Frequency(2), (3) RCKI Period RCKI Pulsewidth High RCKI Pulsewidth Low Reset Timing RST Pulse Width Low Input Serial Port Timing LRCKI to BCKI Setup Time BCKI Pulsewidth High BCKI Pulsewidth Low SDIN Data Setup Time SDIN Data Hold Time Output Serial Port Timing SDOUT Data Delay Time SDOUT Data Hold Time BCKO Pulsewidth High BCKO Pulsewidth Low TDM Mode Timing LRCKO Setup Time LRCKO Hold Time TDMI Data Setup Time TDMI Data Hold Time POWER SUPPLIES Operating Voltage VDD VIO Supply Current IDD, Power Down IDD, Dynamic IIO, Power Down IIO, Dynamic Total Power Dissipation PD, Power Down PD, Dynamic CONDITION MIN TYP MAX UNITS tRCKIP tRCKIH tRCKIL tRSTL tLRIS tSIH tSIL tLDIS tLDIH tDOPD tDOH tSOH tSOL tLROS tLROH tTDMS tTDMH 128 x fSMIN 20 0.4 x tRCKIP 0.4 x tRCKIP 500 10 10 10 10 10 50 1/(128 x fSMIN) MHz ns ns ns ns ns ns ns ns ns 10 2 10 5 10 10 10 10 ns ns ns ns ns ns ns ns 3.0 1.65 VDD = +3.3V, VIO = +3.3V RST = 0, No Clocks fSIN = fsOUT = 192kHz RST = 0, No Clocks fSIN = fSOUT = 192kHz VDD = +3.3V, VIO = +3.3V RST = 0, No Clocks fSIN = fSOUT = 192kHz +3.3 +3.3 3.6 3.6 100 V V µA mA µA mA µW mW 66 100 2 660 225 NOTES: (1) Dynamic performance measured with an Audio Precision System Two Cascade or Cascade Plus. (2) fSMIN = min (fSIN, fSOUT). (3) fSMAX = max (fSIN, fSOUT). 4 SRC4190 www.ti.com SBFS023A TYPICAL CHARACTERISTICS At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 1kHz INPUT TONE at 0dBFS (12kHz:192kHz) 0 –20 –40 –60 dBFS dBFS –80 –100 –120 –140 –160 0 20k 40k 60k 80k 96k –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 0 FFT with 1kHz INPUT TONE at –60dBFS (12kHz:192kHz) 20k 40k 60k 80k 96k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (32kHz:48kHz) 0 –20 –40 –60 dBFS FFT with 1kHz INPUT TONE at –60dBFS (32kHz:48kHz) –60 –70 –80 –90 –100 dBFS –80 –100 –120 –140 –160 0 5k 10k 15k 20k 24k –110 –120 –130 –140 –150 –160 –170 0 5k 10k 15k 20k 24k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (44.1kHz:48kHz) 0 –20 –40 –60 dBFS dBFS –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 FFT with 1kHz INPUT TONE at –60dBFS (44.1kHz:48kHz) –80 –100 –120 –140 –160 0 5k 10k 15k 20k 24k 0 5k 10k 15k 20k 24k Frequency (Hz) Frequency (Hz) SRC4190 SBFS023A www.ti.com 5 TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 1kHz INPUT TONE at 0dBFS (44.1kHz:96kHz) 0 –20 –40 –60 dBFS dBFS –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 FFT with 1kHz INPUT TONE at –60dBFS (44.1kHz:96kHz) –80 –100 –120 –140 –160 0 10k 20k 30k 40k 48k 0 10k 20k 30k 40k 48k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (44.1kHz:192kHz) 0 –20 –40 –60 FFT with 1kHz INPUT TONE at –60dBFS (44.1kHz:192kHz) –60 –70 –80 –90 –100 dBFS –110 –120 –130 –140 –150 –160 –170 dBFS –80 –100 –120 –140 –160 0 20k 40k 60k 80k 96k 0 20k 40k 60k 80k 96k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (48kHz:44.1kHz) 0 –20 –40 –60 dBFS dBFS FFT with 1kHz INPUT TONE at –60dBFS (48kHz:44.1kHz) –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 –80 –100 –120 –140 –160 0 5k 10k Frequency (Hz) 15k 20k 22k 0 5k 10k Frequency (Hz) 15k 20k 22k 6 SRC4190 www.ti.com SBFS023A TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 1kHz INPUT TONE at 0dBFS (48kHz:96kHz) 0 –20 –40 –60 –60 –70 –80 –90 –100 FFT with 1kHz INPUT TONE at –60dBFS (48kHz:96kHz) dBFS dBFS –80 –100 –120 –140 –160 0 10k 20k 30k 40k 48k –110 –120 –130 –140 –150 –160 –170 0 10k 20k 30k 40k 48k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (48kHz:192kHz) 0 –20 –40 –60 dBFS dBFS FFT with 1kHz INPUT TONE at –60dBFS (48kHz:192kHz) –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 –80 –100 –120 –140 –160 0 20k 40k 60k 80k 96k 0 20k 40k 60k 80k 96k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (96kHz:44.1kHz) 0 –20 –40 –60 dBFS dBFS –80 –100 –120 –140 –160 0 5k 10k Frequency (Hz) 15k 20k 22k –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 0 FFT with 1kHz INPUT TONE at –60dBFS (96kHz:44.1kHz) 5k 10k Frequency (Hz) 15k 20k 22k SRC4190 SBFS023A www.ti.com 7 TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 1kHz INPUT TONE at 0dBFS (96kHz:48kHz) 0 –20 –40 –60 dBFS dBFS FFT with 1kHz INPUT TONE at –60dBFS (96kHz:48kHz) –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 –80 –100 –120 –140 –160 0 5k 10k 15k 20k 24k 0 5k 10k 15k 20k 24k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (96kHz:192kHz) 0 –20 –40 –60 dBFS dBFS FFT with 1kHz INPUT TONE at –60dBFS (96kHz:192kHz) –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 –80 –100 –120 –140 –160 0 20k 40k 60k 80k 96k 0 20k 40k 60k 80k 96k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (192kHz:12kHz) 0 –20 –40 –60 dBFS –60 –70 –80 –90 –100 FFT with 1kHz INPUT TONE at –60dBFS (192kHz:12kHz) dBFS –80 –100 –120 –140 –160 0 1k 2k 3k Frequency (Hz) 4k 5k 6k –110 –120 –130 –140 –150 –160 –170 0 1k 2k 3k Frequency (Hz) 4k 5k 6k 8 SRC4190 www.ti.com SBFS023A TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 1kHz INPUT TONE at 0dBFS (192kHz:32kHz) 0 –20 –40 –60 dBFS dBFS FFT with 1kHz INPUT TONE at –60dBFS (192kHz:12kHz) –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 –80 –100 –120 –140 –160 0 2.5k 5k 7.5k 10k 12.5k 15k 16k 0 2.5k 5k 7.5k 10k 12.5k 15k 16k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (192kHz:44.1kHz) 0 –20 –40 –60 dBFS dBFS FFT with 1kHz INPUT TONE at –60dBFS (192kHz:44.1kHz) –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 –80 –100 –120 –140 –160 0 5k 10k Frequency (Hz) 15k 20k 22k 0 5k 10k Frequency (Hz) 15k 20k 22k FFT with 1kHz INPUT TONE at 0dBFS (192kHz:48kHz) 0 –20 –40 –60 dBFS FFT with 1kHz INPUT TONE at –60dBFS (192kHz:48kHz) –60 –70 –80 –90 –100 dBFS –80 –100 –120 –140 –160 0 5k 10k 15k 20k 24k –110 –120 –130 –140 –150 –160 –170 0 5k 10k 15k 20k 24k Frequency (Hz) Frequency (Hz) SRC4190 SBFS023A www.ti.com 9 TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 1kHz INPUT TONE at 0dBFS (192kHz:96kHz) 0 –20 –40 –60 –60 –70 –80 –90 –100 FFT with 1kHz INPUT TONE at –60dBFS (192kHz:96kHz) dBFS dBFS –80 –100 –120 –140 –160 0 10k 20k 30k 40k 48k –110 –120 –130 –140 –150 –160 –170 0 10k 20k 30k 40k 48k Frequency (Hz) Frequency (Hz) FFT with 20kHz INPUT TONE at 0dBFS (44.1kHz:48kHz) 0 –20 –40 –60 dBFS dBFS FFT with 20kHz INPUT TONE at 0dBFS (48kHz:44.1kHz) 0 –20 –40 –60 –80 –100 –120 –140 –160 –80 –100 –120 –140 –160 0 5k 10k 15k 20k 24k 0 5k 10k Frequency (Hz) 15k 20k 22k Frequency (Hz) FFT with 20kHz INPUT TONE at 0dBFS (48kHz:96kHz) 0 –20 –40 –60 dBFS dBFS FFT with 20kHz INPUT TONE at 0dBFS (96kHz:48kHz) –20 –40 –60 –80 –100 –120 –140 –160 –80 –100 –120 –140 –160 0 10k 20k 30k 40k 48k 0 5k 10k 15k 20k 24k Frequency (Hz) Frequency (Hz) 10 SRC4190 www.ti.com SBFS023A TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FFT with 80kHz INPUT TONE at 0dBFS (192kHz:192kHz) 0 –20 –40 –60 dBFS Total Harmonic Distortion+Noise (dB) THD+N vs INPUT AMPLITUDE fIN = 1kHz (44.1kHz:48kHz) –100 –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 –140 –120 –100 –80 –60 –40 –20 0 –80 –100 –120 –140 –160 0 20k 40k 60k 80k 96k Frequency (Hz) Input Amplitude (dBFS) THD+N vs INPUT AMPLITUDE fIN = 1kHz (48kHz:44.1kHz) –100 Total Harmonic Distortion+Noise (dB) THD+N vs INPUT AMPLITUDE fIN = 1kHz (48kHz:96kHz) –100 Total Harmonic Distortion+Noise (dB) –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 –140 –120 –100 –80 –60 –40 –20 0 –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 –140 –120 –100 –80 –60 –40 –20 0 Input Amplitude (dBFS) Input Amplitude (dBFS) THD+N vs INPUT AMPLITUDE fIN = 1kHz (96kHz:48kHz) Total Harmonic Distortion+Noise (dB) Total Harmonic Distortion+Noise (dB) THD+N vs INPUT AMPLITUDE fIN = 1kHz (44.1kHz:192kHz) –100 –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 –140 –120 –100 –80 –60 –40 –20 0 –100 –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 –140 –120 –100 –80 –60 –40 –20 0 Input Amplitude (dBFS) Input Amplitude (dBFS) SRC4190 SBFS023A www.ti.com 11 TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. THD+N vs INPUT AMPLITUDE fIN = 1kHz (192kHz:44.1kHz) –100 Total Harmonic Distortion+Noise (dB) THD+N vs INPUT FREQUENCY WITH 0dBFS INPUT (44.1kHz:48kHz) –100 Total Harmonic Distortion+Noise (dB) –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 –140 –120 –100 –80 –60 –40 –20 0 –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 0 5k 10k Input Frequency (Hz) 15k 20k Input Amplitude (dBFS) THD+N vs INPUT FREQUENCY WITH 0dBFS INPUT = 1kHz (48kHz:44.1kHz) –100 Total Harmonic Distortion+Noise (dB) –100 THD+N vs INPUT FREQUENCY WITH 0dBFS (48kHz:96kHz) –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 0 5k 10k Input Frequency (Hz) 15k 20k Total Harmonic Distortion+Noise (dB) –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 0 5k 10k Input Frequency (Hz) 15k 20k THD+N vs INPUT FREQUENCY WITH 0dBFS (96kHz:48kHz) –100 Total Harmonic Distortion+Noise (dB) Total Harmonic Distortion+Noise (dB) THD+N vs INPUT FREQUENCY WITH 0dBFS (44.1kHz:192kHz) –100 –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 0 5k 10k Input Frequency (Hz) 15k 20k –105 –110 –115 –120 –125 –130 –135 –140 –145 –150 0 5k 10k Input Frequency (Hz) 15k 20k 12 SRC4190 www.ti.com SBFS023A TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. THD+N vs INPUT FREQUENCY WITH 0dBFS (192kHz:44.1kHz) –100 –105 LINEARITY with fIN = 200Hz (44.1kHz:48kHz) 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 Input Amplitude (dBFS) 0 Total Harmonic Distortion+Noise (dB) –115 –120 –125 –130 –135 –140 –145 –150 0 5k 10k Input Frequency (Hz) 15k 20k LINEARITY with fIN = 200Hz (48kHz:44.1kHz) 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 Input Amplitude (dBFS) 0 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 Output Amplitude (dBFS) –110 LINEARITY with fIN = 200Hz (48kHz:96kHz) Output Amplitude (dBFS) Output Amplitude (dBFS) –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 Input Amplitude (dBFS) 0 LINEARITY with fIN = 200Hz (96kHz:48kHz) 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 Input Amplitude (dBFS) 0 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 LINEARITY with fIN = 200Hz (44.1kHz:192kHz) Output Amplitude (dBFS) Output Amplitude (dBFS) –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 Input Amplitude (dBFS) 0 SRC4190 SBFS023A www.ti.com 13 TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. LINEARITY with fIN = 200Hz (192kHz:44.1kHz) 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 Input Amplitude (dBFS) 0 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 0 FREQUENCY RESPONSE with 0dBFS INPUT Output Amplitude (dBFS) 192kHz:48kHz 192kHz:32kHz dBFS 192kHz:96kHz 10k 20k 30k Frequency (Hz) 40k 50k 60k PASS BAND RIPPLE (48k:48k) 0 –0.01 –0.02 –0.03 –0.04 –0.05 –0.06 –0.07 –0.08 –0.09 –0.10 –0.11 –0.12 –0.13 –0.14 –0.15 0 5k 10k 15k 20k 22k Input Frequency (Hz) 0 –0.01 –0.02 –0.03 –0.04 –0.05 –0.06 –0.07 –0.08 –0.09 –0.10 –0.11 –0.12 –0.13 –0.14 –0.15 0 5k PASS BAND RIPPLE (192k:48k) (dBFS) (dBFS) 10k 15k 20k 22k Input Frequency (Hz) 14 SRC4190 www.ti.com SBFS023A PRODUCT OVERVIEW The SRC4190 is an asynchronous sample rate converter (ASRC) designed for professional audio applications. Operation at input and output sampling frequencies up to 212kHz is supported, with an input/output sampling ratio range of 16:1 to 1:16. Excellent dynamic range and Total Harmonic Distortion + Noise (THD+N) are achieved by employing high performance and linear phase digital filtering. Digital filtering options allow for lower group delay processing. The audio input and output ports support standard audio data formats, as well as a TDM interface mode. Word lengths of 24-, 20-, 18-, and 16-bits are supported. Both ports may operate in Slave mode, deriving their word and bit clocks from external input and output devices. Alternatively, one port may operate in Master mode while the other remains in Slave mode. In Master mode, the LRCK and BCK clocks are derived from the reference clock input, RCKI. The flexible configuration of the input and output ports allows connection to a wide variety of audio data converters, interface devices, digital signal processors, and programmable logic. A bypass mode is included, which allows audio data to be passed directly from the input port to the output port, bypassing the ASRC function. The bypass option is useful for passing through encoded or compressed audio data, or nonaudio control or status data. A soft mute function is available providing artifact-free operation while muting the audio output signal. The mute attenuation is typically –128dB. FUNCTIONAL BLOCK DIAGRAM Figure 1 shows a functional block diagram of the SRC4190. Audio data is received at the input port, clocked by either the audio data source in Slave mode or by the SRC4190 in Master mode. The output port data is clocked by either the audio data source in Slave mode, or by the SRC4190 in Master mode. The input data is passed through interpolation filters which up-sample the data, which is then passed on to the re-sampler. The rate estimator compares the input and output sampling frequencies by comparing LRCKI, LRCKO, and a reference clock. The results include an offset for the FIFO pointer and the coefficients needed for re-sampling function. The output of the re-sampler is then passed on to the decimation filter. The decimation filter performs down-sampling and anti-alias filtering functions. LRCKI BCKI SDIN Audio Input Port fSIN Interpolation Filters 16fSIN Re-Sampler 16fSOUT MODE [2:0] IFMT [2:0] OFMT [1:0] OWL [1:0] MUTE BYPAS LGRP RST LRCKO BCKO SDOUT TDMI VDD DGND RCKI Reference Clock Power REFCLK VIO DGND Audio Output Port LRCKO RDY fSOUT Decimation Filters Control Logic LRCKI Rate Estimator REFCLK FIGURE 1. SRC4190 Functional Block Diagram. SRC4190 SBFS023A www.ti.com 15 REFERENCE CLOCK The SRC4190 requires a reference clock for operation. The reference clock is applied at the RCKI input, pin 2. Figure 2 illustrates the reference clock connections and requirements for the SRC4190. The reference clock may operate at 128fS, 256fS, or 512fS, where fS is the input or output sampling frequency. The maximum external reference clock input frequency is 50 MHz. AUDIO PORT MODES The SRC4190 supports seven serial port modes, which are shown in Table 1. The audio port mode is selected using the MODE0 (pin 26), MODE1 (pin 27), and MODE2 (pin 28) inputs. In Slave mode, the port LRCK and BCK clocks are configured as inputs, and receive their clocks from an external audio device. In Master mode, the LRCK and BCK clocks are configured as outputs, being derived from the reference clock input (RCKI). Only one port can be set to Master mode at any given time, as indicated in Table 1. SRC4190 RCKI 2 From External Clock Source 50MHz max tRCKIP RCKI tRCKIH tRCKIL tRCKIP > 20ns min tRCKIH > 0.4 tRCKIP tRCKIL > 0.4 tRCKIP MODE2 MODE1 MODE0 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 SERIAL PORT MODE Both Input and Output Ports are Slave mode Output Port is Master mode with RCKI = 128f S Output Port is Master mode with RCKI = 512f S Output Port is Master mode with RCKI = 256f S Both Input and Output Ports are Slave Mode Input Port is Master mode with RCKI = 128f S Input Port is Master mode with RCKI = 512f S Input Port is Master mode with RCKI = 256f S TABLE 1. Setting the Serial Port Modes. INPUT PORT OPERATION FIGURE 2. Reference Clock Input Connections and Timing Requirements. The audio input port is a three-wire synchronous serial interface that may operate in either Slave or Master mode. The SDIN input (pin 4) is the serial audio data input. Audio data is input at this pin in one of three standard audio data formats: Philips I2S, Left Justified, or Right Justified. The audio data word length may be up to 24 bits for I2S and Left Justified formats, while the Right Justified format supports 16-, 18-, 20-, or 24-bit data. The data formats are shown in Figure 4, while critical timing parameters are shown in Figure 5 and listed in the Electrical Characteristics table. The bit clock is either an input or output at BCKI (pin 5). In slave mode, BCKI is configured as an input pin, and may operate at rates from 32fS to 128fS, with a minimum of one clock cycle per data bit. In Master mode, BCKI operates at a fixed rate of 64fS. RESET AND POWER DOWN OPERATION The SRC4190 may be reset using the RST input (pin 13). There is no internal power on reset, so the user should force a reset sequence after power up in order to initialize the device. In order to force a reset, the reference clock input must be active, with an external clock source supplying a valid reference clock signal (refer to Figure 2). The user must assert RST low for a minimum of 500 nanoseconds and then bring RST high again to force a reset. Figure 3 shows the reset timing for the SRC4190. The SRC4190 also supports a power-down mode. Powerdown mode may be set by holding the RST input low. RCKI RST tRSTL > 500ns FIGURE 3. Reset Pulse Width Requirement. 16 SRC4190 www.ti.com SBFS023A Left Channel LRCKO Right Channel BCKI SDIN MSB LSB MSB (a) Left Justified Data Format LSB LRCKI BCKI SDIN MSB LSB (b) Right Justified Data Format MSB LSB LRCKI BCKI SDIN MSB LSB MSB (c) I2S Data Format 1/fS LSB FIGURE 4. Input Data Formats. LRCKI tLRIS BCKI tLDIS SDIN tSIL tSIH case, the clock rate is equal to fS, the input sampling frequency. The LRCKI duty cycle is fixed to 50% for Master mode operation. Table 2 illustrates data format selection for the input port. The IFMT0 (pin 10), IFMT1 (pin 11), and IFMT2 (pin 12) inputs are utilized to set the input port data format. IFMT2 0 tLDIH IFMT1 0 0 1 1 0 0 1 1 IFMT0 0 1 0 1 0 1 0 1 INPUT PORT DATA FORMAT 24-Bit Left Justified 24-Bit I2S Unused Unused 16-Bit Right Justified 18-Bit Right Justified 20-Bit Right Justified 24-Bit Right Justified 0 0 0 FIGURE 5. Input Port Timing. The left/right word clock, LRCKI (pin 6), may be configured as an input or output pin. In Slave mode, LRCKI is an input pin, while in Master mode LRCKI is an output pin. In either 1 1 1 1 TABLE 2. Input Port Data Format Selection. SRC4190 SBFS023A www.ti.com 17 OUTPUT PORT OPERATION The audio output port is a four-wire synchronous serial interface that may operate in either Slave or Master mode. The SDOUT output (pin 23) is the serial audio data output. Audio data is output at this pin in one of four data formats: Philips I2S, Left Justified, Right Justified, or TDM. The audio data word length may be 16-, 18-, 20-, or 24-bits. For all word lengths, the data is triangular PDF dithered from the internal 28-bit data path. The data formats (with the exception of TDM mode) are shown in Figure 6, while critical timing parameters are shown in Figure 7 and listed in the Electrical Characteristics table. The TDM format and timing are shown in Figures 11 and 12, respectively, while examples of standard TDM configurations are shown in Figures 13 and 14. The bit clock is either input or output at BCKO (pin 25). In Slave mode, BCKO is configured as an input pin, and may operate at rates from 32fS to 128fS, with a minimum of one clock cycle for each data bit. The exception is the TDM mode, where the BCKO must operate at N x 64fS, where N is equal to the number of SRC4190 devices included on the TDM interface. In Master mode, BCKO operates at a fixed rate of 64fS for all data formats except TDM, where BCKO operates at the reference clock (RCKI) frequency. Additional information regarding TDM mode operation is included in the Applications Information section of this data sheet. LRCKO tSOH BCKO tDOPD SDOUT tDOH tSOL FIGURE 7. Output Port Timing. The left/right word clock, LRCKO (pin 24), may be configured as an input or output pin. In Slave mode, LRCKO is an input pin, while in Master mode it is an output pin. In either case, the clock rate is equal to fS, the output sampling frequency. The clock duty cycle is fixed to 50% for I2S, Left Justified, and Right Justified formats in Master mode. The LRCKO pulse width is fixed to 32 BCKO cycles for the TDM format in Master mode. Left Channel LRCKO Right Channel BCKO SDOUT MSB LSB MSB (a) Left Justified Data Format LSB LRCKO BCKO SDOUT MSB LSB (b) Right Justified Data Format MSB LSB LRCKO BCKO SDOUT MSB LSB MSB (c) I2S Data Format 1/fS LSB FIGURE 6. Output Data Formats. 18 SRC4190 www.ti.com SBFS023A Table 3 illustrates data format selection for the output port. The OFMT0 (pin 19), OFMT1 (pin 18), OWL0 (pin 17), and OWL1 (pin 16) inputs are utilized to set the output port data format and word length. SOFT MUTE FUNCTION The soft mute function of the SRC4190 may be invoked by forcing the MUTE input (pin 14) high. The Soft mute function slowly attenuates the output signal level down to all zeroes plus ±4LSB of dither. This provides an artifact-free muting of the audio output port. OFMT1 0 0 1 1 OWL1 0 0 1 1 OFMT0 0 1 0 1 OWL0 0 1 0 1 OUTPUT PORT DATA FORMAT Left Justified I2S TDM Right Justified OUTPUT PORT DATA WORD LENGTH 24 Bits 20 Bits 18 Bits 16 Bits READY OUTPUT The SRC4190 includes an active low ready output named RDY (pin 15). This is an output from the rate estimator block, which indicates that the input-to-output sampling frequency ratio has been determined. The ready signal can be used as a flag or indicator output. The ready signal can also be connected to the active high MUTE input (pin 14) to provide an auto-mute function, so that the output port is muted when the rate estimator is in transition. TABLE 3. Output Port Data Format Selection. BYPASS MODE The SRC4190 includes a bypass function, which routes the input port data directly to the output port, bypassing the ASRC function. Bypass mode may be invoked by forcing the BYPAS input (pin 9) high. For normal ASRC operation, the BYPAS pin should be set to 0. No dithering is applied to the output data in bypass mode; digital attenuation and mute functions are also unavailable in this mode. APPLICATIONS INFORMATION This section of the data sheet provides practical applications information for hardware and systems engineers who will be designing the SRC4190 into their end equipment. RECOMMENDED CIRCUIT CONFIGURATION The typical connection diagram for the SRC4190 is shown in Figure 8. Recommended values for power supply bypass capacitors are included. These capacitors should be placed as close to the IC package as possible. From Control Logic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LGRP RCKI NC SDIN BCKI LRCKI VIO DGND BYPAS IFMT0 IFMT1 IFMT2 RST MUTE SRC4190 MODE2 MODE1 MODE0 BCKO LRCKO SDOUT VDD DGND TDMI OFMT0 OFMT1 OWL0 OWL1 RDY 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Reference Clock Audio Input Device Audio Output Device From/To Control Logic VIO = +1.65V to VDD To Pin 7 10µF 0.1µF To Pin 8 To Pin 21 To Pin 22 0.1µF VDD = +3.3V 10µF FIGURE 8. Typical Connection Diagram for the SRC4190. SRC4190 SBFS023A www.ti.com 19 INTERFACING TO DIGITAL AUDIO RECEIVERS AND TRANSMITTERS The SRC4190 input and output ports are designed to interface to a variety of audio devices, including receivers and transmitters commonly used for AES/EBU, S/PDIF, and CP1201 communications. Texas Instruments manufactures the DIR1703 digital audio interface receiver and DIT4096/4192 digital audio transmitters to address these applications. Figure 9 illustrates interfacing the DIR1703 to the SRC4190 input port. The DIR1703 operates from a single +3.3V supply, which requires the VIO supply (pin 7) for the SRC4190 to be set to +3.3V for interface compatibility. SRC4190 LRCKO BCKO SDOUT RCKI DIT4096, DIT4192 SYNC SCLK SDATA MCLK TX+ TX– AES3, S/PDIF OUTPUT REF Clock Generator DIT Clock Generator Clock Select Assumes VIO = +3.3V for SRC4190 and DIT4096, DIT4192 DIR1703 LRCKO AES3, S/PDIF Input BCKO RCV DIN DATA SCKO SRC4190 LRCKI BCKI SDIN RCLI FIGURE 10. Interfacing the SRC4190 to the DIT4096/4192 Digital Audio Interface Transmitter. Like the SRC4190 output port, the DIT4096 and DIT4192 audio serial port may be configured as a Master or Slave. In cases where the SRC4190 output port is set to Master mode, it is recommended to use the reference clock source (RCKI) as the master clock source (MCLK) for the DIT4096/4192, to ensure that the transmitter is synchronized to the SRC4190 output port data. Clock Generator Clock Select Assumes VIO = +3.3V for SRC4190 TDM APPLICATIONS The SRC4190 supports a TDM output mode, which allows multiple devices to be daisy-chained together to create a serial frame. Each device occupies one sub-frame within a frame, and each sub-frame carries two channels (Left followed by Right). Each sub-frame is 64 bits long, with 32 bits allotted for each channel. The audio data for each channel is Left Justified within the allotted 32 bits. Figure 11 illustrates the TDM frame format, while Figure 12 shows the TDM input timing parameters, which are listed in the Electrical Characteristics table of this data sheet. FIGURE 9. Interfacing the SRC4190 to the DIR1703 Digital Audio Interface Receiver. Figure 10 shows the interface between the SRC4190 output port and the DIT4096 or DIT4192 audio serial port. Once again, the VIO supplies for both the SRC4190 and DIT4096/4192 are set to +3.3V for compatibility. LRCKO BCKO SDOUT Left Sub-Frame 1 Right Left Sub-Frame 2 One Frame = 1/fs N = Number of Daisy-Chained Devices One Sub-Frame contains 64 bits, with 32 bits per channel. For each channel, the audio data is Left Justified, MSB first format, with the word length determined by the OWL[1:0] pins/bits. Right Left Sub-Frame N Right FIGURE 11. TDM Frame Format. 20 SRC4190 www.ti.com SBFS023A tLROS LRCKO tLROH devices that can be daisy-chained in TDM mode is dependent upon the output sampling frequency and the BCKO frequency, leading to the following numerical relationship: Number of Daisy-Chained Devices = (fBCKO / fs) / 64 BCKO tTDMS TDMI tTDMH Where: fBCKO = Output Port Bit Clock (BCKO), 27.136 MHz maximum fs = Output Port Sampling (or LRCKO) Frequency, 212kHz maximum. This relationship holds true for both Slave and Master modes. Figures 13 and 14 show typical connection schemes for the TDM mode. Although the TMS320C671x DSP family is shown as the audio processing engine in these figures, other TI digital signal processors with a multi-channel buffered serial port (McBSPTM) may also function with this arrangement. Interfacing to processors from other manufacturers is also possible. Refer to Figure 7 in this data sheet, along with the equivalent serial port timing diagrams shown in the DSP data sheet, to determine compatibility. FIGURE 12. Input Timing for TDM Mode. The frame rate is equal to the output sampling frequency, fs. The BCKO frequency for the TDM interface is N x 64fs, where N is the number of devices included in the daisy chain. For Master mode, the output BCKO frequency is fixed to the reference clock (RCKI) input frequency. The number of SRC4190 Slave #N TDMI SDOUT LRCKO BCKO RCKI TDMI SRC4190 Slave #2 SDOUT LRCKO BCKO RCKI TDMI SRC4190 Slave #1 SDOUT LRCKO BCKO RCKI TMS320C671x McBSP DRn FSRn CLKRn CLKIN or CLKSn n = 0 or 1 Clock Generator FIGURE 13. TDM Interface where all Devices are Slaves. SRC4190 Master TDMI SDOUT LRCKO BCKO RCKI TDMI SRC4190 Slave #2 SDOUT LRCKO BCKO RCKI TDMI SRC4190 Slave #1 SDOUT LRCKO BCKO RCKI TMS320C671x McBSP DRn FSRn CLKRn CLKIN or CLKSn n = 0 or 1 Clock Generator FIGURE 14. TDM Interface where one Device is Master to Multiple Slaves. SRC4190 SBFS023A www.ti.com 21 PIN COMPATIBILITY WITH THE ANALOG DEVICES AD1895 AND AD1896 The SRC4190 is pin-and function-compatible with the AD1895 and AD1896 when observing the guidelines indicated in the following paragraphs. Power Supplies. To ensure compatibility, the VDD_IO and VDD_CORE supplies of the AD1895 and AD1896 must be set to +3.3V, while the VIO and VDD supplies of the SRC4190 must be set to +3.3V. Pin 1 connection. For the AD1895, pin 1 is a no connect (N.C.) pin. For the SRC4190, pin 1 functions as the low group delay selection input, and should not be left unconnected. Pin 1 must be connected to either digital ground or the VIO supply, dependent upon the desired group delay. Crystal Oscillator. The SRC4190 does not have an on-chip crystal oscillator. An external reference clock is required at the RCKI input (pin 2). Reference Clock Frequency. The reference clock input frequency for the SRC4190 must be no higher than 30 MHz, in order to match the master clock frequency specification of the AD1895 and AD1896. In addition, the SRC4190 does not support the 768fS reference clock rate. Master Mode Maximum Sampling Frequency. When the input or output ports are set to Master mode, the maximum sampling frequency must be limited to 96kHz in order to support the AD1895 and AD1896 specification. This is despite the fact that the SRC4190 supports a maximum sampling frequency of 212kHz in Master mode. The user should consider building an option into his or her design to support the higher sampling frequency of the SRC4190. Matched Phase Mode. Due to the internal architecture of the SRC4190, it does not require or support the matched phase mode of the AD1896. Given multiple SRC4190 devices, if all reference clock (RCKI) inputs are driven from the same clock source, the devices will be phase matched. 22 SRC4190 www.ti.com SBFS023A PACKAGE OPTION ADDENDUM www.ti.com 9-Dec-2004 PACKAGING INFORMATION Orderable Device SRC4190IDB SRC4190IDBR (1) Status (1) ACTIVE ACTIVE Package Type SSOP SSOP Package Drawing DB DB Pins Package Eco Plan (2) Qty 28 28 50 2000 Pb-Free (RoHS) Pb-Free (RoHS) Lead/Ball Finish CU NIPDAU CU NIPDAU MSL Peak Temp (3) Level-2-260C-1YEAR/ Level-1-220C-UNLIM Level-2-260C-1YEAR/ Level-1-220C-UNLIM 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 - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. None: Not yet available Lead (Pb-Free). 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. Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight. (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry 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 MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) 28 PINS SHOWN 0,65 28 0,38 0,22 15 0,15 M PLASTIC SMALL-OUTLINE 0,25 0,09 5,60 5,00 8,20 7,40 Gage Plane 1 A 14 0°– 8° 0,25 0,95 0,55 Seating Plane 2,00 MAX 0,05 MIN 0,10 PINS ** DIM A MAX 14 16 20 24 28 30 38 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 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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