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PCM1608 датащи(PDF) 39 Page - Texas Instruments

номер детали PCM1608
подробное описание детали  24-Bit, 192-kHz Sampling, 8-Channel, Enhanced Multilevel, Delta-Sigma Digital-to-Analog Converter
PDF  46 Pages
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производитель  TI2 [Texas Instruments]
домашняя страница  https://www.ti.com
Logo TI2 - Texas Instruments

PCM1608 датащи(HTML) 39 Page - Texas Instruments

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S/PDIF
Receiver
Evaluation Board
DEM-DAI1608
PCM1608(1)
2nd-Order
Low-Pass
Filter
Band Limit
A-Weight
Filter(1)
Analyzer
and
Display
Digital
Generator
S/PDIF
Output
0% Full-Scale,
Dither Off (SNR)
–60 dB FS,
1-kHz Sine Wave
(Dynamic Range)
rms Mode
HPF = 22 Hz
LPF = 22 kHz
Option = A-Weighting(2)
B0063-02
f–3 dB = 54 kHz
fC = 1 kHz
Notch Filter
IDLE-CHANNEL SIGNAL-TO-NOISE RATIO
PCM1608
SBAS164B – DECEMBER 2000 – REVISED JULY 2005
KEY PERFORMANCE PARAMETERS AND MEASUREMENT (continued)
(1)
Infinite-zero-detect mute disabled
(2)
Results without A-weighting are approximately 3 dB worse.
Figure 40. Test Setup for Dynamic Range and SNR Measurements
The SNR test provides a measure of the noise of the DAC. The input to the DAC is in all-0s data, and the DAC
infinite-zero-detect mute function must be disabled (default condition at power up for the PCM1608). This
ensures that the delta-sigma modulator output is connected to the output amplifier circuit so that idle tones (if
present) can be observed at the output. The dither function of the digital signal generator must also be disabled
to ensure an all-0s data stream at the input of the DAC.
The measurement setup for SNR is identical to that used for dynamic range, with the exception of the input
signal level (see the notes provided in Figure 40).
39



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