Datasheet

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SRC4190

(1)

192kHz Stereo Asynchronous

Sample Rate Converters

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 (V

) 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.

FEATURES

● AUTOMATIC SENSING OF THE INPUT-TO-

OUTPUT SAMPLING RATIO

● WIDE INPUT-TO-OUTPUT SAMPLING RANGE:

16:1 to 1:16

● SUPPORTS INPUT AND OUTPUT SAMPLING

RATES UP TO 212kHz

● DYNAMIC RANGE: 128dB (–60dbFS input,

BW = 20Hz to f

/2, A-Weighted)

● THD+N: –125dB (0dbFS input, BW = 20Hz to

/2)

● ATTENUATES SAMPLING AND REFERENCE

CLOCK JITTER

● HIGH PERFORMANCE, LINEAR PHASE

DIGITAL FILTERING

● FLEXIBLE AUDIO SERIAL PORTS:

Master or Slave Mode Operation

Supports I

S, 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

● SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND

OUTPUT DATA

All output data is dithered from the internal

28-Bit data path

● LOW GROUP DELAY OPTION FOR

INTERPOLATION FILTER

● SOFT MUTE FUNCTION

● BYPASS MODE

● POWER DOWN MODE

● OPERATES FROM A SINGLE +3.3 VOLT

POWER SUPPLY

● SMALL SSOP-28 PACKAGE

● PIN COMPATIBLE WITH THE SRC4192,

AD1895, AND AD1896

(2)

APPLICATIONS

● DIGITAL MIXING CONSOLES

● DIGITAL AUDIO WORKSTATIONS

● AUDIO DISTRIBUTION SYSTEMS

● BROADCAST STUDIO EQUIPMENT

● HIGH-END A/V RECEIVERS

● GENERAL DIGITAL AUDIO PROCESSING

www.ti.com

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.

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.

SBFS023B – JUNE 2003 – REVISED SEPTEMBER 2007

All trademarks are the property of their respective owners.

(1) U.S. Patent No. 7,262,716.

(2) Refer to the Applications Information section of this data sheet for details.

SRC4190

Summary of content (29 pages)

PAGE 1
SRC4190(1) SRC 419 0 SBFS023B – JUNE 2003 – REVISED SEPTEMBER 2007 192kHz Stereo Asynchronous Sample Rate Converters FEATURES APPLICATIONS ● AUTOMATIC SENSING OF THE INPUT-TOOUTPUT SAMPLING RATIO ● WIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16 ● SUPPORTS INPUT AND OUTPUT SAMPLING RATES UP TO 212kHz ● DYNAMIC RANGE: 128dB (–60dbFS input, BW = 20Hz to fS /2, A-Weighted) ● THD+N: –125dB (0dbFS input, BW = 20Hz to fS /2) ● ATTENUATES SAMPLING AND REFERENCE CLOCK JITTER ● HIGH PERFORMANCE, LINEAR PHAS
PAGE 2
ABSOLUTE MAXIMUM RATINGS(1) ELECTROSTATIC DISCHARGE SENSITIVITY 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 .........................................
PAGE 3
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 TYP MAX UNITS 212 212 Bits kHz kHz 24 fSIN 4 4 fSOUT 1:16 16:1 BW = 20Hz to fSOUT /2, –60dBFS Input fIN = 1kHz, Unweighted (add 3dB to spec for A-weighted result) 44.1kHz:48kHz 48kHz:44.
PAGE 4
ELECTRICAL CHARACTERISTICS (Cont.) All parameters specified with TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted.
PAGE 5
TYPICAL CHARACTERISTICS At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted.
PAGE 6
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) FFT with 1kHz INPUT TONE at –60dBFS (44.1kHz:96kHz) 0 –60 –20 –70 –80 –40 –90 –100 dBFS dBFS –60 –80 –100 –110 –120 –130 –120 –140 –140 –150 –160 –160 –170 0 10k 20k 30k 40k 48k 0 20k 30k 40k Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (44.1kHz:192kHz) FFT with 1kHz INPUT TONE at –60dBFS (44.
PAGE 7
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted.
PAGE 8
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted.
PAGE 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:32kHz) FFT with 1kHz INPUT TONE at –60dBFS (192kHz:12kHz) 0 –60 –20 –70 –80 –40 –90 –100 dBFS dBFS –60 –80 –100 –110 –120 –130 –120 –140 –140 –150 –160 –160 –170 0 2.5k 5k 7.5k 10k 12.5k 15k 16k 0 2.5k 5k 7.5k 10k 12.5k Frequency (Hz) Frequency (Hz) FFT with 1kHz INPUT TONE at 0dBFS (192kHz:44.
PAGE 10
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted.
PAGE 11
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) THD+N vs INPUT AMPLITUDE fIN = 1kHz (44.
PAGE 12
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) THD+N vs INPUT FREQUENCY WITH 0dBFS INPUT (44.
PAGE 13
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. LINEARITY with fIN = 200Hz (44.1kHz:48kHz) THD+N vs INPUT FREQUENCY WITH 0dBFS (192kHz:44.1kHz) –105 –110 Output Amplitude (dBFS) Total Harmonic Distortion+Noise (dB) –100 –115 –120 –125 –130 –135 –140 –145 –150 5k 10k 15k Input Amplitude (dBFS) LINEARITY with fIN = 200Hz (48kHz:44.
PAGE 14
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VDD = +3.3V, and VIO = +3.3V, unless otherwise noted. FREQUENCY RESPONSE with 0dBFS INPUT 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 dBFS Output Amplitude (dBFS) LINEARITY with fIN = 200Hz (192kHz:44.1kHz) –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 0 192kHz:48kHz 192kHz:32kHz 192kHz:96kHz 0 10k 20k Input Amplitude (dBFS) 0 –0.01 –0.02 –0.03 –0.04 –0.05 –0.06 –0.
PAGE 15
PRODUCT OVERVIEW passing through encoded or compressed audio data, or nonaudio control or status data. 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.
PAGE 16
REFERENCE CLOCK AUDIO PORT MODES 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. The SRC4190 supports seven serial port modes, which are shown in Table 1.
PAGE 17
Left Channel Right Channel LRCKO BCKI SDIN MSB LSB MSB LSB (a) Left Justified Data Format LRCKI BCKI MSB SDIN LSB MSB LSB (b) Right Justified Data Format LRCKI BCKI SDIN MSB LSB MSB LSB (c) I2S Data Format 1/fS FIGURE 4. Input Data Formats. case, the clock rate is equal to fS, the input sampling frequency. The LRCKI duty cycle is fixed to 50% for Master mode operation. LRCKI tLRIS Table 2 illustrates data format selection for the input port.
PAGE 18
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.
PAGE 19
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.
PAGE 20
INTERFACING TO DIGITAL AUDIO RECEIVERS AND TRANSMITTERS DIT4096, DIT4192 SRC4190 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. LRCKO SYNC TX+ BCKO SCLK TX– SDATA SDOUT RCKI Texas Instruments manufactures the DIR1703 digital audio interface receiver and DIT4096/4192 digital audio transmitters to address these applications.
PAGE 21
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: tLROS LRCKO tLROH Number of Daisy-Chained Devices = (fBCKO / fs) / 64 BCKO Where: tTDMS fBCKO = Output Port Bit Clock (BCKO), 27.136 MHz maximum fs = Output Port Sampling (or LRCKO) Frequency, 212kHz maximum. TDMI tTDMH This relationship holds true for both Slave and Master modes. FIGURE 12. Input Timing for TDM Mode.
PAGE 22
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.
PAGE 23
Revision History DATE REVISION PAGE SECTION 9/07 B 1 Front Page DESCRIPTION Added U.S. patent number to note (1). NOTE: Page numbers for previous revisions may differ from page numbers in the current version. SRC4190 SBFS023B www.ti.
PAGE 24
PACKAGE OPTION ADDENDUM www.ti.
PAGE 25
PACKAGE OPTION ADDENDUM www.ti.
PAGE 26
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SRC4190IDBR Package Package Pins Type Drawing SSOP DB 28 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 16.4 Pack Materials-Page 1 8.1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.4 2.5 12.0 16.
PAGE 27
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SRC4190IDBR SSOP DB 28 2000 367.0 367.0 38.
PAGE 28
MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 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 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
PAGE 29
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.