LTC2433-1IMS Linear Technology, LTC2433-1IMS Datasheet - Page 25

• Manufacturer Part Number: LTC2433-1IMS
• Description: IC CONV A/D 16BIT DIFF 10-MSOP
• Manufacturer: Linear Technology

Specifications of LTC2433-1IMS

• Number Of Bits: 16
• Sampling Rate (per Second): 6.8
• 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
input and/or reference capacitors (C
previous section provides formulae for evaluating the
effect of the source resistance upon the converter perfor-
mance for any value of f
or reference capacitors (C
the external source resistance upon the LTC2433-1 typical
performance can be inferred from Figures 14, 15, 19 and
20 in which the horizontal axis is scaled by 139,800/f
Figure 24. Offset Error vs Output Data Rate and Temperature
Figure 26. –FS Error vs Output Data Rate and Temperature
–8
8
0
–3
–6
–9
0
6
3
0
V
V
V
V
F
O
CC
REF
INCM
IN
0
10 20 30 40 50
V
V
IN
IN
F
OUTPUT DATA RATE (READINGS/SEC)
= EXT OSC
O
= 0V
CC
REF
= 5V
+
= 5V
–
10 20 30
= EXT OSC
OUTPUT DATA RATE (READINGS/SEC)
= 2.5V
= 1.25V
= 3.75V
= 5V
= 5V
U
EOSC
U
IN
40
T
A
, C
. If small external input and/
= 85 C
50 60 70 80 90 100
REF
60 70 80 90
T
) are used, the effect of
T
A
A
W
= 25 C
T
IN
= 25 C
A
= 85 C
, C
24331 F24
REF
24331 F26
100
) are used, the
U
EOSC
.
Third, an increase in the frequency of the external oscilla-
tor above 460800Hz (a more than 3 increase in the output
data rate) will start to decrease the effectiveness of the
internal autocalibration circuits. This will result in a pro-
gressive degradation in the converter accuracy and linear-
ity. Typical measured performance curves for output data
rates up to 100 readings per second are shown in Fig-
ures 24, 25, 26, 27, 28 and 29. In order to obtain the
Figure 25. +FS Error vs Output Data Rate and Temperature
Figure 27. Noise Histogram (Output Rate = 100Hz,
V
CC
= 5V, V
15
12
–3
50
40
30
20
10
9
6
3
0
0
0
GAUSSIAN DISTRIBUTION
m = 3.1 V
V
V
IN
IN
F
–1
O
REF
CC
REF
= 1.59 V
10
+
–
= EXT OSC
OUTPUT DATA RATE (READINGS/SEC)
= 3.75V
= 1.25V
= 5V
= 5V
0
= 100mV, 125 C)
20
RMS
30
T
1
A
OUTPUT CODE
= 25 C
40
2
50
60
3
T
A
= 85 C
70
V
V
V
REF
REF
IN
IN
F
T
O
A
CC
REF
IN
LTC2433-1
+
–
4
= 2.048MHz
= 125 C
= 0V
+
= GND
= GND
–
80
= 5V
= 0.1V
= 0.1V
= GND
24331 F25
5
90
2433 F27
100
25
24331fa