Datasheet
AD1877
REV. A
–4–
TEMPERATURE RANGE
Min Typ Max Unit
Specifications Guaranteed 25 °C
Functionality Guaranteed 0 70 °C
Storage –60 +100 °C
DIGITAL FILTER CHARACTERISTICS
Min Typ Max Unit
Decimation Factor 64
Passband Ripple 0.006 dB
Stopband
1
Attenuation 90 dB
48 kHz F
S
(at Recommended Crystal Frequencies)
Passband 0 21.6 kHz
Stopband 26.4 kHz
44.1 kHz F
S
(at Recommended Crystal Frequencies)
Passband 0 20 kHz
Stopband 24.25 kHz
32 kHz F
S
(at Recommended Crystal Frequencies)
Passband 0 14.4 kHz
Stopband 17.6 kHz
Other F
S
Passband 0 0.45 F
S
Stopband 0.55 F
S
Group Delay 36/F
S
s
Group Delay Variation 0 µs
NOTES
1
Stopband repeats itself at multiples of 64 × F
S
, where F
S
is the output word rate. Thus the digital filter will attenuate to 0 dB across the frequency spectrum except
for a range ± 0.55 × F
S
wide at multiples of 64 × F
S
.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
Min Typ Max Unit
DV
DD
1 to DGND1 and DV
DD
2 to DGND2 0 6 V
AV
DD
to AGND/AGNDL/AGNDR 0 6 V
Digital Inputs DGND – 0.3 DV
DD
+ 0.3 V
Analog Inputs AGND – 0.3 AV
DD
+ 0.3 V
AGND to DGND –0.3 +0.3 V
Reference Voltage Indefinite Short Circuit to Ground
Soldering (10 sec) 300 °C
ORDERING GUIDE
Package Package
Model Temperature Description Option
AD1877JR 0°C to 70°C SOIC R-28
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD1877 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE