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參數(shù)資料
| 型號： | LTC1412CG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 3Msps, Sampling A/D Converter |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | 0.209 INCH, PLASTIC, SSOP-28 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 499K |
| 代理商： | LTC1412CG |
4
LTC1412
TW U
(Note 5)
SYMBOL
f
SAMPLE(MAX)
t
THROUGHPUT
t
CONV
t
ACQ
t
1
t
2
t
3
PARAMETER
Maximum Sampling Frequency
Throughput Time (Acquisition + Conversion)
Conversion Time
Acquisition Time
CS
↓
to CONVST
↓
Setup Time
CONVST
Low Time
CONVST to BUSY Delay
CONDITIONS
MIN
3
TYP
MAX
UNITS
MHz
G
G
333
283
50
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
G
240
20
G
(Notes 9, 10)
(Note 10)
C
L
= 25pF
G
5
G
20
5
G
20
20
25
t
4
Data Ready Before BUSY
↑
–20
–25
50
0
G
t
5
t
6
Delay Between Conversions
Data Access Time After CS
↓
(Note 10)
C
L
= 25pF
G
10
35
45
30
35
40
G
t
7
Bus Relinquish Time
8
LTC1412C
LTC1412I
G
G
t
8
t
9
CONVST High Time
Aperture Delay of Sample-and-Hold
G
20
–1
The
G
denotes specifications which apply over the full operating
temperature range; all other limits and typicals T
A
= 25
°
C.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
All voltage values are with respect to ground with DGND and
AGND wired together (unless otherwise noted).
Note 3:
When these pin voltages are taken below V
SS
or above V
DD
, they
will be clamped by internal diodes. This product can handle input currents
greater than 100mA below V
SS
or above V
DD
without latchup.
Note 4:
When these pin voltages are taken below V
SS
they will be clamped
by internal diodes. This product can handle input currents greater than
100mA below V
SS
without latchup. These pins are not clamped to V
DD
.
Note 5:
V
DD
= 5V, f
SAMPLE
= 3MHz and t
r
= t
f
= 5ns unless otherwise
specified.
Note 6:
Linearity, offset and full-scale specifications apply for a single-
ended A
IN
input with A
IN–
grounded.
Note 7:
Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 8:
Bipolar offset is the offset voltage measured from –0.5LSB
when the output code flickers between 0000 0000 0000 and
1111 1111 1111.
Note 9:
Guaranteed by design, not subject to test.
Note 10:
Recommended operating conditions.
TIW
W
DATA (N – 1)
DB11 TO DB0
CONVST
BUSY
CS
1412 TD
t
2
t
CONV
t
3
t
1
t
5
t
4
t
6
t
7
DATA N
DB11 TO DB0
DATA (N + 1)
DB11 TO DB0
DATA
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