The SRC4190 device 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 3.3-V power supply. A separate digital I/O supply (VIO) operates with a 1.65-V to 3.6-V supply, allowing greater flexibility when interfacing to current and future generation signal processors and logic devices. The SRC4190 is available in a 28-pin SSOP package.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
SRC4190 | SSOP (28) | 10.20 mm × 5.30 mm |
Changes from B Revision (September 2007) to C Revision
Changes from A Revision (July 2003) to B Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
BCKI | 5 | Input and Output | Input port bit clock I/O |
BCKO | 25 | Input and Output | Output port bit clock I/O |
BYPAS | 9 | Input | ASRC bypass control input (active high) |
DGND | 8, 21 | Ground | Digital ground |
IFMT0 | 10 | Input | Input port data format control input |
IFMT1 | 11 | Input | Input port data format control input |
IFMT2 | 12 | Input | Input port data format control input |
LGRP | 1 | Input | Low group delay control input (active high) |
LRCKI | 6 | Input and Output | Input port left and right word clock I/O |
LRCKO | 24 | Input and Output | Output port left and right word clock I/O |
MODE0 | 26 | Input | Serial port mode control input |
MODE1 | 27 | Input | Serial port mode control input |
MODE2 | 28 | Input | Serial port mode control input |
MUTE | 14 | Input | Output mute control input (active high) |
NC | 3 | — | No connection |
OFMT0 | 19 | Input | Output port data format control input |
OFMT1 | 18 | Input | Output port data format control input |
OWL0 | 17 | Input | Output port data word length control input |
OWL1 | 16 | Input | Output port data word length control input |
RCKI | 2 | Input | Reference clock input |
RDY | 15 | Output | ASRC ready status output (active low) |
RST | 13 | Input | Reset input (active low) |
SDIN | 4 | Input | Audio serial data input |
SDOUT | 23 | Output | Audio serial data output |
TDMI | 20 | Input | TDM data input. Connect to DGND when not in use. |
VDD | 22 | Power | Digital core supply, 3.3 V |
VIO | 7 | Power | Digital I/O supply, 1.65 V to VDD |
MIN | MAX | UNIT | |
---|---|---|---|
Supply voltage, VDD | –0.3 | 4 | V |
Supply voltage, VIO | –0.3 | 4 | V |
Digital input voltage | –0.3 | 4 | V |
Operating temperature | –45 | 85 | °C |
Storage temperature, Tstg | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±1500 |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
VDD | VDD supply voltage | 3 | 3.3 | 3.6 | V |
VIO 1.8-V supply voltage | 1.65 | 1.8 | 1.95 | V | |
VIO 3.3-V supply voltage | 3 | 3.3 | 3.6 | V | |
Operating temperature | –45 | 85 | °C |
THERMAL METRIC(1) | SRC4190 | UNIT | |
---|---|---|---|
DB (SSOP) | |||
28 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 77.8 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 37.6 | °C/W |
RθJB | Junction-to-board thermal resistance | 38.4 | °C/W |
ψJT | Junction-to-top characterization parameter | 8.8 | °C/W |
ψJB | Junction-to-board characterization parameter | 38.1 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
DYNAMIC PERFORMANCE(1) | |||||||
Resolution | 24 | Bits | |||||
fSIN | Input sampling frequency | 4 | 212 | kHz | |||
fSOUT | Output sampling frequency | 4 | 212 | kHz | |||
Input:Output sampling ratio | Upsampling | 1:16 | |||||
Downsampling | 16:1 | ||||||
Dynamic range | BW = 20 Hz to fSOUT / 2, –60-dBFS input, fIN = 1 kHz, Unweighted (add 3 dB for A‑weighted result) |
44.1 kHz:48 kHz | 125 | dB | |||
48 kHz:44.1 kHz | 125 | ||||||
48 kHz:96 kHz | 125 | ||||||
44.1 kHz:192 kHz | 125 | ||||||
96 kHz:48 kHz | 125 | ||||||
192 kHz:12 kHz | 125 | ||||||
192 kHz:32 kHz | 125 | ||||||
192 kHz:48 kHz | 125 | ||||||
32 kHz:48 kHz | 125 | ||||||
12 kHz:192 kHz | 125 | ||||||
Total harmonic distortion + noise |
BW = 20 Hz to fSOUT / 2, 0-dBFS input, fIN = 1 kHz, Unweighted |
44.1 kHz:48 kHz | –125 | dB | |||
48 kHz:44.1 kHz | –125 | ||||||
48 kHz:96 kHz | –125 | ||||||
44.1 kHz:192 kHz | –125 | ||||||
96 kHz:48 kHz | –125 | ||||||
192 kHz:12 kHz | –125 | ||||||
192 kHz:32 kHz | –125 | ||||||
192 kHz:48 kHz | –125 | ||||||
32 kHz:48 kHz | –125 | ||||||
12 kHz:192 kHz | –125 | ||||||
Interchannel gain mismatch | 0 | dB | |||||
Interchannel phase deviation | 0 | ° | |||||
Mute attenuation | 24-bit word length, A-weighted | –128 | dB | ||||
DIGITAL INTERPOLATION FILTER | |||||||
Passband | 0.4535 × fSIN | Hz | |||||
Passband ripple | ±0.007 | dB | |||||
Transition band | 0.4535 × fSIN | 0.5465 × fSIN | Hz | ||||
Stop band | 0.5465 × fSIN | Hz | |||||
Stop band attenuation | –125 | dB | |||||
Normal group delay (LGRP = 0) | 102.53125 / fSIN | s | |||||
Low group delay (LGRP = 1) | 70.53125 / fSIN | s | |||||
DIGITAL DECIMATION FILTER | |||||||
Passband | 0.4535 × fSOUT | Hz | |||||
Passband ripple | ±0.008 | dB | |||||
Transition band | 0.4535 × fSOUT | 0.5465 × fSOUT | Hz | ||||
Stop band | 0.5465 × fSOUT | Hz | |||||
Stop band attenuation | –125 | dB | |||||
Group delay | 36.46875 / fSOUT | s | |||||
DIGITAL I/O | |||||||
VIH | High-level input voltage | 0.7 × VIO | VIO | V | |||
VIL | Low-level input voltage | 0 | 0.3 × VIO | V | |||
IIH | High-level input current | 0.5 | 10 | µA | |||
IIL | Low-level input current | 0.5 | 10 | µA | |||
VOH | High-level output voltage | IO = –4 mA | 0.8 × VIO | VIO | V | ||
VOL | Low-level output voltage | IO = 4 mA | 0 | 0.2 × VIO | V | ||
CIN | Input capacitance | 3 | pF | ||||
POWER SUPPLY | |||||||
VDD | VDD operating voltage | 3 | 3.3 | 3.6 | V | ||
VIO | VIO operating voltage | 1.65 | 3.3 | 3.6 | |||
IDD | VDD supply current | VDD = VIO = 3.3 V, RST = 0, No clocks, fSIN = 192 kHz, fSOUT = 192 kHz |
Power down | 100 | µA | ||
Dynamic | 66 | mA | |||||
IIO | VIO supply current | VDD = VIO = 3.3 V, RST = 0, No clocks, fSIN = 192 kHz, fSOUT = 192 kHz |
Power down | 100 | µA | ||
Dynamic | 2 | mA | |||||
PD | Power dissipation | VDD = VIO = 3.3 V, RST = 0, No clocks, fSIN = 192 kHz, fSOUT = 192 kHz |
Power down | 660 | µW | ||
Dynamic | 225 | mW |
PARAMETER | TEST CONDITIONS | MIN | MAX | UNIT | |
---|---|---|---|---|---|
REFERENCE CLOCK TIMING | |||||
RCKI frequency(1)(2) | 128 × fSMIN | 50 | MHz | ||
tRCKIP | RCKI period | 20 | 1 / (128 × fSMIN) | ns | |
tRCKIH | RCKI pulse width HIGH | 0.4 × tRCKIP | ns | ||
tRCKIL | RCKI pulse width LOW | 0.4 × tRCKIP | ns | ||
RESET TIMING | |||||
tRSTL | RST pulse width LOW | 500 | ns | ||
INPUT SERIAL PORT TIMING | |||||
tLRIS | LRCKI to BCKI setup time | 10 | ns | ||
tSIH | BCKI pulse width HIGH | 10 | ns | ||
tSIL | BCKI pulse width LOW | 10 | ns | ||
tLDIS | SDIN data setup time | 10 | ns | ||
tLDIH | SDIN data hold time | 10 | ns | ||
OUTPUT SERIAL PORT TIMING | |||||
tDOPD | SDOUT data delay time | 10 | ns | ||
tDOH | SDOUT data hold time | 2 | ns | ||
tSOH | BCKO pulsewidth HIGH | 10 | ns | ||
tSOL | BCKO pulse width LOW | 5 | ns | ||
TDM MODE TIMING | |||||
tLROS | LRCKO setup time | 10 | ns | ||
tLROH | LRCKO hold time | 10 | ns | ||
tTDMS | TDMI data setup time | 10 | ns | ||
tTDMH | TDMI data hold time | 10 | ns |