Datasheet

REV. 0
–4–
AD1871–SPECIFICATIONS
LOW-PASS DIGITAL FILTER CHARACTERISTICS (f
S
= 48 kHz)
Parameter Min Typ Max Unit
Decimation Factor 128
Pass-Band Frequency 21.77 kHz
Stop-Band Frequency 26.23 kHz
Pass-Band Ripple ± 0.01 dB
Stop-Band Attenuation 120 dB
Group Delay 910 ms
LOW-PASS DIGITAL FILTER CHARACTERISTICS (f
S
= 96 kHz)
Parameter Min Typ Max Unit
Decimation Factor 64
Pass-Band Frequency 43.54 kHz
Stop-Band Frequency 52.46 kHz
Pass-Band Ripple ± 0.01 dB
Stop-Band Attenuation 120 dB
Group Delay 460 ms
HIGH-PASS DIGITAL FILTER CHARACTERISTICS (f
S
= 48 kHz)
Parameter Min Typ Max Unit
Cutoff Frequency 2 Hz
HIGH-PASS DIGITAL FILTER CHARACTERISTICS (f
S
= 96 kHz)
Parameter Min Typ Max Unit
Cutoff Frequency 4 Hz
MASTER CLOCK (MCLK) AND RESET TIMING
Mnemonic Description Min Typ Max Unit Comment
t
MCH
MCLK High Width 20 ns
t
MCL
MCLK Low Width 20 ns
t
PDR
RESET Low Pulsewidth 20 ns
MCLK
t
MCH
t
MCL
t
PDR
RESET
Figure 1. MCLK/ RESET Timing