User guide

DS900F1 17
CS4244
COMBINED DAC INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE
Test Conditions (unless otherwise specified): VA_SEL = 0 for VA = 3.3 VDC, 1 for VA = 5.0 VDC. The filter charac-
teristics have been normalized to the sample rate (F
S
) and can be referenced to the desired sample rate by multi-
plying the given characteristic by F
S
.
Notes:
22. Response is clock-dependent and will scale with F
S
.
23. For Single-Speed Mode, the measurement bandwidth is 0.5465 F
S
to 3 F
S
.
For Double-Speed Mode, the measurement bandwidth is 0.577 F
S
to 1.4 F
S
.
24. The DAC group delay is measured from the FS/LRCK transition (rising or falling) before the first bit of
a (group of) sample(s) is transmitted on the SDINx pins to the time it appears on the AOUTx pins.
Parameter Min Typ Max Unit
Single-Speed Mode
Passband (Note 22) to -0.05 dB corner
to -3 dB corner
0
0
-
-
0.4780
0.4996
F
S
F
S
Frequency Response 20 Hz to 20 kHz -0.01 - +0.12 dB
StopBand 0.5465 - - F
S
StopBand Attenuation (Note 23) 102 - - dB
DAC1-4 Group Delay (Note 24) -11/Fs-s
Double-Speed Mode
Passband (Note 22) to -0.1 dB corner
to -3 dB corner
0
0
-
-
0.4650
0.4982
F
S
F
S
Frequency Response 20 Hz to 20 kHz -0.05 - +0.2 dB
StopBand 0.5770 - - F
S
StopBand Attenuation (Note 23) 80 - - dB
DAC1-4 Group Delay (Note 24) -7/Fs-s