IC SAMPLE RATE CONV 2CH 48-TQFP

 

SRC4392IPFB

Manufacturer Part NumberSRC4392IPFB
DescriptionIC SAMPLE RATE CONV 2CH 48-TQFP
ManufacturerTexas Instruments
TypeSample Rate Converter
SRC4392IPFB datasheets

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Specifications of SRC4392IPFB

ApplicationsInterfaces, Recorders, RoutersMounting TypeSurface Mount
Package / Case48-TQFP, 48-VQFPConversion Rate216 KHz
Resolution24 bitOperating Supply Voltage1.65 V to 2 V / 3 V to 3.6 V
Mounting StyleSMD/SMTNumber Of Channels2
Operating Temperature Range- 40 C to + 85 CAudio Control TypeSample Rate Converter
Control InterfaceSerialControl / Process ApplicationDigital Audio Recorders And Mixing Desks, Digital Audio Interfaces, Digital Audio Routers
Rohs CompliantYesFor Use WithSRC4392EVM-PDK - EVAL MOD FOR SRC4392
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names296-26676
SRC4392IPFB
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SRC4392
SBFS029C – DECEMBER 2005 – REVISED SEPTEMBER 2007
The input and output servo-loop frequency responses are shown in
filter response for each servo loop rolls off at 80dB per decade. The servo loop corner frequencies scale
proportionally with input or output sampling rates. The low corner frequency and sharp roll-off provide excellent
jitter attenuation for the SRC block.
Figure 73. Input Digital Servo-Loop Frequency Response
-100
-150
-200
Figure 74. Output Digital Servo-Loop Frequency Response
The SRC includes output soft muting and digital attenuation functions, providing artifact-free muting and output
level control for the SRC output data. The mute function forces the SRC output data low by stepping the output
attenuation from the current setting to an all-zero data output state. The mute function may be controlled by the
MUTE input (pin 14), or the MUTE bit in control register 0x2D. Both the pin and control bit are active high, with
the signals being combined by a logic OR function internally to generate the SRC output mute control signal. The
MUTE control bit in control register 0x2D is disabled by default.
The digital attenuation is programmable over a 0dB to –127.5dB range in 0.5dB steps, and may be controlled
independently for the Left and Right channels. The attenuation level is set using control registers; by default, the
level is 0dB. A tracking function is available, allowing the Left and Right channel attenuation data to be set to the
same value by simply programming the Left channel attenuation register. The tracking mode is enabled or
disabled using a control register bit. The tracking function is disabled by default.
The SRC includes digital de-emphasis filtering for the audio input data. The de-emphasis filter provides
normalization for 50/15μs pre-emphasized audio data. The de-emphasis filter supports 32kHz, 44.1kHz, and
48kHz input sampling rates. The filter is controlled by the DEM0, DEM1, and AUTODEM bits in control register
0x2E. The DEM0 and DEM1 bits allow the user to manually configure the de-emphasis filter operation. By
default, the de-emphasis filtering is disabled. The AUTODEM bit, when enabled, overrides the setting of the
34
Submit Documentation Feedback
0
-50
-100
Slow Mode
-150
f = 192kHz
S
-200
-1
0
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Frequency (Hz)
0
-50
Slow Mode
f = 192kHz
S
-2
-1
0
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2
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10
10
10
Frequency (Hz)
Product Folder Link(s):
SRC4392
www.ti.com
Figure 73
and
Figure
74, respectively. The
Fast Mode
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Fast Mode
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5
10
10
Copyright © 2005–2007, Texas Instruments Incorporated

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