
AD1954
–5–
DIGITAL TIMING
Parameter
Min
Typ
Max
Unit
tDMDC MCLK Recommended Duty Cycle @ 12.288 MHz (256 fS
MCLK Recommended Duty Cycle @ 12.288 MHz (256 f
MCLK Recommended Duty Cycle @ 12.288 MHz (256 f Mode)
45
55
%
tDMDC MCLK Recommended Duty Cycle @ 24.576 MHz (512 fS
MCLK Recommended Duty Cycle @ 24.576 MHz (512 f
MCLK Recommended Duty Cycle @ 24.576 MHz (512 f Mode)
40
60
%
tDMD MCLK Delay (All Mode)
25
ns
tDBH BCLK Low Pulsewidth
10
ns
tDBH BCLK High Pulsewidth
10
ns
tDBD BCLK Delay (to BCLKO)
25
ns
tDLS LRCLK Setup
0
ns
tDLH LRCLK Hold
10
ns
tDLD LRCLK Delay (to LRCLKO)
25
ns
tDDS SDATA Setup
0
ns
tDDH SDATA Hold
10
ns
tDDD SDATA Delay (to SDATAO)
25
ns
tCCL CCLK Low Pulsewidth
12
ns
tCCH CCLK High Pulsewidth
12
ns
tCLS
CLATCH Setup
10
ns
tCLH CLATCH Hold
10
ns
tCLD CLATCH High Pulsewidth
10
ns
tCDS CDATA Setup
0
ns
tCDH CDATA Hold
10
ns
tCOD COUT Delay
35
ns
tCOH COUT Hold
2
ns
tDCD DCSOUT Delay
35
ns
tDCH DCSOUT Hold
2
ns
tPDRP PD/RST Low Pulsewidth
5
ns
Specifications subject to change without notice.
DIGITAL FILTER CHARACTERISTICS AT 44.1 KHZ
Parameter
Min
Typ
Max
Unit
Pass-Band Ripple
±0.01
dB
Stop-Band Attenuation
70
dB
Pass Band
20
kHz
0.5442 fS
ff
Stop Band
24
kHz
0.4535 fS
ff
Group Delay
24.625/fS
24.625/f
sec
Specifications subject to change without notice.
REV. A