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參數資料
| 型號： | AD7840BQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | LC2MOS Complete 14-Bit DAC |
| 中文描述： | SERIAL, PARALLEL, WORD INPUT LOADING, 2.5 us SETTLING TIME, 14-BIT DAC, CDIP24 |
| 封裝： | HERMETIC SEALED, CERDIP-24 |
| 文件頁數： | 3/16頁 |
| 文件大小： | 337K |
| 代理商： | AD7840BQ |
AD7840
REV. B
–3–
ORDE RING GUIDE
Integral
Nonlinearity
(LSB)
T emperature
Range
SNR
(dB)
Package
Option
2
Model
1
AD7840JN
AD7840K N
AD7840JP
AD7840K P
AD7840AQ
AD7840ARS
AD7840BQ
AD7840SQ
3
0
°
C to +70
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
–25
°
C to +85
°
C
–25
°
C to +85
°
C
–25
°
C to +85
°
C
–55
°
C to +125
°
C
78 min
80 min
78 min
80 min
78 min
78 min
80 min
78 min
±
2 max
±
1 max
±
2 max
±
1 max
±
2 max
±
2 max
±
1 max
±
2 max
N-24
N-24
P-28A
P-28A
Q-24
RS-24
Q-24
Q-2
4
NOT ES
1
T o order MIL-ST D-883, Class B processed parts, add /883B to part number.
Contact your local sales office for military data sheet and availability.
2
N = Plastic DIP; P = Plastic Leaded Chip Carrier; Q = Cerdip.
3
T his grade will be available to /883B processing only.
TIMNGCHARACTERISTICS
1, 2
Limit at T
MIN
, T
MAX
(J, K, A, B Versions)
Limit at T
MIN
, T
MAX
(S Version)
Parameter
Units
Conditions/Comments
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
83
t
9
t
10
t
11
0
0
45
21
10
40
50
150
30
75
75
0
0
50
28
15
40
50
200
40
100
100
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
CS
to
WR
Setup T ime
CS
to
WR
Hold T ime
WR
Pulse Width
Data Valid to
WR
Setup T ime
Data Valid to
WR
Hold T ime
LDAC
Pulse Width
SYNC
to SCLK Falling Edge
SCLK Cycle T ime
Data Valid to SCLK Setup T ime
Data Valid to SCLK Hold T ime
SYNC
to SCLK Hold T ime
NOT ES
1
T iming specifications in
bold print
are 100% production tested. All other times are sample tested at +25
°
C to ensure compliance. All input signals are specified with
tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.
2
See Figures 6 and 8.
3
SCLK mark/space ratio is 40/60 to 60/40.
Specifications subject to change without notice.
(V
DD
= +5 V
6
5%, V
SS
= –5 V
6
5%, AGND = DGND = 0 V.)
ABSOLUT E MAX IMUM RAT INGS*
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
V
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
AGND to DGND . . . . . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
V
OUT
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . V
SS
to V
DD
REF OUT to AGND . . . . . . . . . . . . . . . . . . . . . . . 0 V to V
DD
REF IN to AGND . . . . . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Digital Inputs to DGND . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Operating T emperature Range
Commercial (J, K Versions) . . . . . . . . . . . . . . 0
°
C to +70
°
C
Industrial (A, B Versions) . . . . . . . . . . . . . . –25
°
C to +85
°
C
Extended (S Version) . . . . . . . . . . . . . . . . –55
°
C to +125
°
C
Storage T emperature Range . . . . . . . . . . . . –65
°
C to +150
°
C
Lead T emperature (Soldering, 10 sec) . . . . . . . . . . . . +300
°
C
Power Dissipation (Any Package) to +75
°
C . . . . . . . . 450 mW
Derates above +75
°
C by . . . . . . . . . . . . . . . . . . . . 10 mW/
°
C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. T his is a stress rating only and functional
operation of the device at these or any other conditions above those listed in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
WARNING!
ESD SENSITIVE DEVICE
C AUT ION
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 AD7840 features 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.
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