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參數(shù)資料
| 型號(hào)： | LTC1414CGN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | Dual, Low Voltage, LinCMOS(TM) Differential Comparator 8-SOIC 0 to 70 |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-28 |
| 文件頁(yè)數(shù)： | 4/20頁(yè) |
| 文件大?。?/td> | 353K |
| 代理商： | LTC1414CGN |
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4
LTC 1414
TW U
(Note 5)
SYMBOL
f
SAMPLE(MAX)
t
CONV
t
ACQ
t
THROUGHPUT
t
1
t
2
t
3
t
4
t
5
t
6
PARAMETER
Maximum Sampling Frequency
Conversion Time
Acquisition Time
Throughput Time (Acquisition + Conversion)
CONVST to BUSY Delay
Data Ready Before BUSY
↑
Delay Between Conversions
CONVST Low Time
CONVST High Time
Aperture Delay of Sample-and-Hold
CONDITIONS
MIN
2.2
220
TYP
MAX
UNITS
MHz
G
G
330
40
370
10
±
20
400
100
454
ns
ns
ns
ns
ns
ns
ns
ns
ns
G
G
C
L
= 25pF
(Note 9)
(Note 10)
(Note 10)
G
100
40
40
G
G
–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, V
SS
= –5V, f
SAMPLE
= 2.2MHz 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 00 and
1111 1111 1111 11.
Note 9:
Recommended operating conditions.
Note 10:
The falling CONVST edge starts a conversion. If CONVST returns
high at a critical point during the conversion it can create small errors. For
best results ensure that CONVST returns high either within 225ns after the
start of the conversion or after BUSY rises.
TYPICAL PERFOR A CE CHARACTERISTICS
U
Signal-to-Noise Ratio vs Input
Frequency
INPUT FREQUENCY (Hz)
10k
S
90
80
70
60
50
40
30
20
10
0
100k
1M
10M
1414 G02
INPUT FREQUENCY (Hz)
10k
D
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
100k
1M
10M
1414 G03
2nd
THD
3rd
INPUT FREQUENCY (Hz)
E
S
10k
100k
1M
10M
1414 TA02
1k
14
13
12
11
10
9
8
7
6
5
4
3
2
86
80
74
68
f
SAMPLE
= 2.2MHz
S/(N + D) vs Input Frequency
Distortion vs Input Frequency
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