AD1857/AD1858
P ACKAGE CH ARACTERISTICS
Min
Typ
Max
Units
θJA (T hermal Resistance [Junction-to-Ambient])
θJC (T hermal Resistance [Junction-to-Case])
195
13
°C/W
°C/W
D IGITAL FILTER CH ARACTERISTICS
Min
Max
Units
Passband Ripple
Stopband1 Attenuation
48 kHz FS
±0.045
dB
dB
62
Passband
Stopband
0
21.312
6117
kHz
kHz
26.688
44.1 kHz FS
Passband
Stopband
0
19.580
5620
kHz
kHz
24.520
32 kHz FS
Passband
Stopband
0
14.208
4078
kHz
kHz
17.792
Other FS
Passband
Stopband
Group Delay
Group Delay Variation
0
0.444
127.444
40/FS
0
FS
FS
sec
µs
0.556
ANALO G FILTER CH ARACTERISTICS
Min
Typ
Max
Units
Passband Ripple
Stopband Attenuation (at 64 × FS)
–0.075
dB
dB
58
NOT ES
1Stopband nominally repeats itself at multiples of 128 × FS, where FS is the input word rate. T hus the digital filter will attenuate to 62 dB across the frequency
spectrum, except for a range ±0.55 × FS wide at multiples of 128 × FS.
Specifications subject to change without notice.
O RD ERING GUID E
P ackage
P IN CO NFIGURATIO N
P ackage
O ption*
1
2
20
19
18
17
16
15
SDATA
BCLK
MCLK
PD/RST
MODE
NC
Model
Tem perature
D escription
3
LRCLK
AD1857JRS
0°C to +70°C
AD1857JRSRL 0°C to +70°C
20-Lead SSOP
20-Lead SSOP
RS-20
4
DV
DD
RS-20 on
13" Reels
RS-20
RS-20 on
13" Reels
AD1857
AD1858
TOP VIEW
5
DGND
MUTE
DEEMP
384/256
6
AD1858JRS 0°C to +70°C
AD1858JRSRL 0°C to +70°C
20-Lead SSOP
20-Lead SSOP
(Not to Scale)
AV
DD
14 AV
DD
7
8
13
12
OUTR
OUTL
AGND
9
AGND
*RS = Shrink Small Outline
10
11 FILT
CMOUT
NC = NO CONNECT
CAUTIO N
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 AD1857/AD1858 feature proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high energy electrostatic discharges. T herefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. 0
ADI [ ADI ]
