參數(shù)資料
型號： AD1843JST
廠商： ANALOG DEVICES INC
元件分類： 消費家電
英文描述： Serial-Port 16-Bit SoundComm Codec
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： PLASTIC, TQFP-100
文件頁數(shù)： 6/64頁
文件大?。?/td> 848K
代理商： AD1843JST
REV. 0
–6–
AD1843
POWER SUPPLY (33
HPOUT LOAD)
Min
4.75
2.85
Typ
Max
5.25
5.25
Units
V
V
Power Supply Range—Analog V
CC
Power Supply Range—Digital V
DD
Total Power Supply Current—5.0 V
CC
and V
DD
Operating
(5.0 V
CC
and V
DD
Supplies)
Total Power Supply Current—5.0 V
CC
/3.0 V
DD
Operating*
(5.0 V
CC
Analog/3.0 V
DD
Digital Supplies)
Analog Supply Current—5.0 V
CC
Operating
Digital Supply Current—5.0 V
DD
Operating
Digital Supply Current—3.0 V
DD
Operating*
Digital Power Supply Current—V
DD
Power Down (
PWRDWN
LO)
Analog Power Supply Current—V
CC
Power Down (
PWRDWN
LO)
Power Dissipation—5.0 V
CC
and V
DD
Operating (Current
×
Nominal Supply)
Power Dissipation—5.0 V
CC
/3.0 V
DD
Operating* (Current
×
Nominal Supply)
Power Dissipation—5.0 V
CC
and V
DD
Power Down (
PWRDWN
LO)
(Current
×
Nominal Supply)
Power Dissipation—5.0 V
CC
/3.0 V
DD
Power Down* (
PWRDWN
LO)
(Current
×
Nominal Supply)
Power Supply Rejection (100 mV p-p Signal @ 1 kHz)*
(At Both Analog and Digital Supply Pins, for ADC, DAC1 and DAC2)
CLOCK SPECIFICATIONS*
210
250
mA
150
60
150
90
175
75
175
100
1
0.5
1250
875
mA
mA
mA
mA
mA
mA
mW
mW
7.5
mW
5
mW
dB
40
Min
Typ
24.576
Max
Units
MHz
%
ms
Input Crystal/Clock Frequency
Input Clock Duty Cycle (When an External Clock Is Used Instead of a Crystal)
Initialization Sample Rate Change Time
PACKAGE CHARACTERISTICS
25/75
75/25
0
Typ
96
8.75
30.6
4.6
Units
°
C/W
°
C/W
°
C/W
°
C/W
PQFP
θ
JA
(Thermal Resistance [Junction-to-Ambient])
PQFP
θ
JC
(Thermal Resistance [Junction-to-Case])
TQFP
θ
JA
(Thermal Resistance [Junction-to-Ambient])
TQFP
θ
JC
(Thermal Resistance [Junction-to-Case])
NOTES
1
The stopband repeats itself at multiples of 64
×
F
S
, where F
is the sampling frequency. Thus the audio mode digital filter will attenuate to –91.8 dB or better across
the frequency spectrum except for a range of
±
0.6
×
F
wide at multiples of 64
×
F
.
2
The stopband repeats itself at multiples of 64
×
F
, where F
is the sampling frequency. Thus the modem mode digital filter will attenuate to –75.7 dB or better across
the frequency spectrum except for a range of
±
0.542
×
F
wide at multiples of 64
×
F
.
3
The stopband repeats itself at multiples of 64
×
F
, where F
S
is the sampling frequency. Thus the resampler mode digital filter will attenuate to –92.2 dB or better
across the frequency spectrum except for a range of
±
0.5
×
F
S
wide at multiples of 64
×
F
S
.
*Guaranteed, not tested.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
Min
Max
Units
Power Supplies
Digital (V
DD
)
Analog (V
CC
)
Input Current
(Except Supply Pins)
Analog Input Voltage (Signal Pins) –0.3
Digital Input Voltage (Signal Pins) –0.3
Ambient Temperature (Operating) 0
Storage Temperature
ESD Tolerance (Human Body
Model per Method 3015.2
of MIL-STD-883B)
–0.3
–0.3
6.0
6.0
V
V
±
10.0
V
CC
+ 0.3
V
+ 0.3
+70
+150
mA
V
V
°
C
°
C
V
–65
1000
WARNING!
ESD SENSITIVE DEVICE
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 AD1843 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.
*Stresses greater than those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ORDERING INFORMATION
Temperature
Range
Package
Description
Package
Option
Model
AD1843JS
AD1843JST
0
°
C to +70
°
C
0
°
C to +70
°
C
80-Lead PQFP
100-Lead TQFP ST-100
S-80
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