Datasheet

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SBAS327A − JUNE 2004 − REVISED SEPTEMBER 2004
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4
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted, all characteristics specified with T
A
= +25°C, V
CC
= +5V, V
DD
= +3.3V, system clock (SCKI) is 512f
S
for Single Rate
Sampling, 256f
S
for Dual Rate Sampling, or 128f
S
for Quad Rate Sampling. The device is operated in Master mode for all dynamic performance
measurements.
PCM4204
PARAMETER UNITMAXTYPMINTEST CONDITIONS
DYNAMIC PERFORMANCE (PCM Output)
(3)
f
S
= 48kHz
(4)
THD+N V
IN
= −0.5dBFS, f
IN
= 1kHz −105 −96 dB
V
IN
= −60dBFS, f
IN
= 1kHz −56 dB
Dynamic Range V
IN
= −60dBFS, f
IN
= 1kHz, A-weighted 112 118 dB
Channel Separation 105 120 dB
f
S
= 96kHz
THD+N V
IN
= −0.5dBFS, f
IN
= 1kHz, BW = 20Hz to 40kHz −103 dB
V
IN
= −60dBFS, f
IN
= 1kHz, BW = 20Hz to 40kHz −52 dB
Dynamic Range V
IN
= −60dBFS, f
IN
= 1kHz, A-weighted 118 dB
Channel Separation 120 dB
f
S
= 192kHz
THD+N V
IN
= −0.5dBFS, f
IN
= 1kHz, BW = 20Hz to 40kHz −103 dB
Dynamic Range V
IN
= 0V, Unweighted, BW = 20Hz to 40kHz 108 dB
V
IN
= 0V, A-weighted 117 dB
Channel Separation 120 dB
DYNAMIC PERFORMANCE (DSD Output)
(5)
64f
S
Output Rate DSDBCK = 2.8224MHz, BW = 20Hz to 20kHz
THD+N V
IN
= −0.5dBFS, f
IN
= 1kHz −103 dB
V
IN
= −60dBFS, f
IN
= 1kHz −52 dB
Dynamic Range V
IN
= −60dBFS, f
IN
= 1kHz, A-weighted 115 dB
128f
S
Output Rate DSDBCK = 5.6448MHz, BW = 20Hz to 20kHz
THD+N V
IN
= −0.5dBFS, f
IN
= 1kHz −105 dB
V
IN
= −60dBFS, f
IN
= 1kHz −56 dB
Dynamic Range V
IN
= −60dBFS, f
IN
= 1kHz, A-weighted 118 dB
DIGITAL DECIMATION FILTER
Single and Dual Rate Sampling Modes
Passband Edge −0.005dB 0.453f
S
Hz
Passband Ripple ±0.005 dB
Stop Band Edge 0.547f
S
Hz
Stop Band Attenuation −100 dB
Group Delay 37/f
S
sec
(1)
Applies to the FMT0, FMT1, FMT2, S/M, FS0, FS1, FS2, HPFD, BCK, LRCK, SUB, DSDCLK, DSD1, DSD2, DSD3, DSD4, and SCKI pins.
(2)
Applies to the TEST and RST pins.
(3)
Typical performance is measured using an Audio Precision System Two Cascade or Cascade Plus test system. The measurement bandwidth
is limited using the Audio Precision 22Hz high-pass filter in combination with either a 20kHz low-pass filter for f
S
= 48kHz or a 40kHz low-pass
filter for f
S
= 96kHz and 192kHz. All A-weighted measurements are performed using the A-weighting filter in combination with the band limiting
filters already mentioned. The measurements are made with the RMS detector selected.
(4)
A 256f
S
system clock is used at final production test for f
S
= 48kHz measurements.
(5)
Typical DSD performance is measured using an Audio Precision System Two Cascade or Cascade Plus test system. The measurement
bandwidth is limited using the Audio Precision 22Hz high-pass filter in combination with a 20kHz low-pass filter. All A-weighted measurements
are performed using the A-weighting filter in combination with the band limiting filter already mentioned. The measurements are made with the
RMS detector selected. The 1-bit DSD data is converted to 24-bit linear PCM data for measurement using a PCM4204 configured for DSD input
mode.