LTC2411IMS Linear Technology, LTC2411IMS Datasheet - Page 26

• Manufacturer Part Number: LTC2411IMS
• Description: IC A/D CONV 24BIT MICRPWR 10MSOP
• Manufacturer: Linear Technology

Specifications of LTC2411IMS

• Number Of Bits: 24
• Sampling Rate (per Second): 7.5
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 1mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
REF
When F
every 100
translates into about 0.37ppm additional INL error. For the
LTC2411-1, when F
resistance driving REF
0.41ppm additional INL error. When F
external oscillator with a frequency f
source resistance driving REF
about 2.91 • 10
ure 19 shows the typical INL error due to the source
resistance driving the REF
values are used. The effect of the source resistance on the
two reference pins is additive with respect to this INL error.
In general, matching of source impedance for the REF
and REF
LTC2411/LTC2411-1
26
Figure 18a. +FS Error vs R
Figure 17a. +FS Error vs R
–
translates into about 0.45ppm additional INL error.
O
–
–100
–120
–140
–160
pins does not help the gain or the INL error. The
–10
–20
–30
–40
–50
–20
–40
–60
–80
= HIGH (internal oscillator and 50Hz notch),
0
0
1
of source resistance driving REF
0
V
REF
REF
IN
IN
F
T
C
V
REF
REF
IN
IN
F
T
O
A
CC
O
REF
A
CC
100
+
–
+
= GND
= 25 C
–
–6
= GND
= 25 C
+
–
= 3.75V
= 5V
= 1.25V
+
–
= 3.75V
= 5V
= 1.25V
= 5V
= 10 F
= GND
= 5V
= GND
200
10
• f
U
C
REF
O
C
300
EOSC
C
REF
C
REF
= 0.001 F
= LOW, every 100
+
REF
R
100
400
C
R
= 100pF
SOURCE
SOURCE
= 0.01 F
SOURCE
REF
SOURCE
U
or REF
= 0pF
ppm additional INL error. Fig-
+
500
or REF
= 0.1 F
C
REF
( )
600
( )
1k
+
at REF
at REF
= 1 F
–
or REF
C
700
REF
–
W
translates into about
pins when large C
10k
800
EOSC
= 0.01 F
+
+
or REF
or REF
900
2411 F17a
O
2411 F18a
–
, every 100 of
is driven by an
100k
1000
translates into
–
–
(Small C
(Large C
U
of source
+
or REF
IN
IN
REF
)
)
–
+
Figure 19. INL vs Differential Input Voltage (V
and Reference Source Resistance (R
for Large C
Figure 17b. – FS Error vs R
Figure 18b. – FS Error vs R
160
140
120
100
–10
80
60
40
20
10
–2
–4
–6
–8
REF
50
40
30
20
10
0
9
6
4
2
0
0
–0.5–0.4– 0.3– 0.2– 0.1 0 0.1 0.2 0.3 0.4 0.5
0
1
V
REF
REF
V
V
REF
REF
IN
IN
F
T
Values (C
V
REF
REF
IN
IN
F
T
CC
INCM
O
A
CC
100
O
CC
A
+
–
= GND
= 25 C
+
–
R
+
–
= 5V
= GND
= 25 C
+
–
= 1.25V
= 5V
= 3.75V
+
= 1.25V
SOURCE
–
= 3.75V
= 5V
= GND
= 5V
= 5V
= GND
= 0.5 • (IN
200
= 5V
= GND
10
C
C
REF
REF
C
300
REF
= 500
REF
R
C
= 0.001 F
= 0.01 F
V
SOURCE
REF
400
R
= 100pF
+
R
100
INDIF
SOURCE
SOURCE
SOURCE
+ IN
SOURCE
C
= 0pF
REF
C
500
R
/V
1 F)
REF
–
SOURCE
) = 2.5V
= 2k
REFDIF
= 1 F
600
( )
= 0.01 F
( )
1k
at REF
at REF
C
REF
700
C
SOURCE
= 1k
REF
= 10 F
F
C
T
800
O
A
REF
10k
= 0.1 F
+
+
= GND
= 25 C
or REF
or REF
= 10 F
900
2411 F18b
2411 F17b
2411 F19
at REF
IN
1000
100k
= IN
–
–
(Small C
(Large C
+
+
and REF
= IN
–
)
IN
IN
–
)
)
)