參數(shù)資料
型號: LTC2415CGN
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 24-Bit No Latency ADCs with Differential Input and Differential Reference
中文描述: 1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16
封裝: 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù): 29/40頁
文件大小: 605K
代理商: LTC2415CGN
LTC2415/LTC2415-1
29
sn2415 24151fs
APPLICATIU
used for the external source impedance seen by IN
+
and
IN
, the expected drift of the dynamic current, offset and
gain errors will be insignificant (about 1% of their respec-
tive values over the entire temperature and voltage range).
Even for the most stringent applications, a one-time
calibration operation may be sufficient.
W
U
U
Figure 22. +FS Error vs R
SOURCE
at IN
+
or IN
(Large C
IN
)
Figure 23. –FS Error vs R
SOURCE
at IN
+
or IN
(Large C
IN
)
Figure 24. Offset Error vs Common Mode Voltage
(V
INCM
= IN
+
= IN
) and Input Source Resistance Imbalance
(
R
IN
= R
SOURCEIN
+ – R
SOURCEIN
–) for Large C
IN
Values (C
IN
1
μ
F)
R
SOURCE
(
)
0 100 200 300 400 500 600 700 800 9001000
+
R
)
2415 F22
300
240
180
120
60
0
V
CC
= 5V
REF
= 5V
REF
= GND
IN
+
= 3.75V
IN
= 1.25V
F
O
= GND
T
A
= 25
°
C
C
IN
= 0.01
μ
F
C
IN
= 0.1
μ
F
C
IN
= 1
μ
F, 10
μ
F
R
SOURCE
(
)
0 100 200 300 400 500 600 700 800 9001000
R
)
2415 F23
0
–60
–120
–180
–240
–300
V
= 5V
REF
+
= 5V
REF
= GND
IN
+
= 1.25V
IN
= 3.75V
F
O
= GND
T
A
= 25
°
C
C
IN
= 0.01
μ
F
C
IN
= 0.1
μ
F
C
IN
= 1
μ
F, 10
μ
F
V
INCM
(V)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
O
R
)
2415 F24
120
100
80
60
40
20
0
–20
–40
–60
–80
–100
–120
F
O
= GND
T
A
= 25
°
C
R
SOURCEIN
– = 500
C
IN
= 10
μ
F
V
CC
= 5V
REF
= 5V
REF
= GND
IN
+
= IN
= V
INCM
A:
R
IN
= +400
B:
R
IN
= +200
C:
R
IN
= +100
D:
R
IN
= 0
E:
R
IN
= –100
F:
R
IN
= –200
G:
R
IN
= –400
A
B
C
D
E
F
G
In addition to the input sampling charge, the input ESD
protection diodes have a temperature dependent leakage
current. This current, nominally 1nA (
±
10nA max), results
in a small offset shift. A 100
source resistance will create
a 0.1
μ
V typical and 1
μ
V maximum offset voltage.
相關(guān)PDF資料
PDF描述
LTC2415IGN 24-Bit No Latency ADCs with Differential Input and Differential Reference
LTC2415 2-Channel Differential Input 24-Bit No Latency DS ADC
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