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LTC2484CDD Datasheet(PDF) 30 Page - Linear Technology

Part # LTC2484CDD
Description  24-Bit ?誇 ADC with Easy Drive Input Current Cancellation
PDF  40 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2484CDD Datasheet(HTML) 30 Page - Linear Technology

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LTC2484
2484fa
leakage current. This leakage current, nominally 1nA
(
±10nA max), results in a small gain error. A 100Ω source
resistance will create a 0.05
µV typical and 0.5µV maxi-
mum full-scale error.
Output Data Rate
When using its internal oscillator, the LTC2484 produces
up to 7.5 samples per second (sps) with a notch frequency
of 60Hz, 6.25sps with a notch frequency of 50Hz and 6.8ps
with the 50Hz/60Hz rejection mode. The actual output data
rate will depend upon the length of the sleep and data
output phases which are controlled by the user and which
can be made insignificantly short. When operated with an
APPLICATIO S I FOR ATIO
Figure 15. +FS Error vs RSOURCE at VREF (Small CREF)
Figure 16. –FS Error vs RSOURCE at VREF (Small CREF)
Figure 17. +FS Error vs RSOURCE at VREF (Large CREF)
Figure 18. –FS Error vs RSOURCE at VREF (Large CREF)
Figure 19. INL vs Differential Input Voltage and
Reference Source Resistance for CREF > 1µF
RSOURCE (Ω)
0
50
70
90
10k
2484 F15
30
10
40
60
80
20
0
–10
10
100
1k
100k
VCC = 5V
VREF = 5V
VIN
+ = 3.75V
VIN
– = 1.25V
FO = GND
TA = 25°C
CREF = 0.01µF
CREF = 0.001µF
CREF = 100pF
CREF = 0pF
RSOURCE (Ω)
0
–200
–100
0
800
2484 F18
–300
–400
–500
200
400
600
1000
VCC = 5V
VREF = 5V
VIN
+ = 1.25V
VIN
– = 3.75V
FO = GND
TA = 25°C
CREF = 1µF, 10µF
CREF = 0.1µF
CREF = 0.01µF
RSOURCE (Ω)
0
–30
–10
10
10k
2484 F16
–50
–70
–40
–20
0
–60
–80
–90
10
100
1k
100k
VCC = 5V
VREF = 5V
VIN
+ = 1.25V
VIN
– = 3.75V
FO = GND
TA = 25°C
CREF = 0.01µF
CREF = 0.001µF
CREF = 100pF
CREF = 0pF
RSOURCE (Ω)
0
300
400
500
800
2484 F17
200
100
0
200
400
600
1000
VCC = 5V
VREF = 5V
VIN
+ = 3.75V
VIN
– = 1.25V
FO = GND
TA = 25°C
CREF = 1µF, 10µF
CREF = 0.1µF
CREF = 0.01µF
VIN/VREF (V)
– 0.5
2
6
10
0.3
2484 F19
–2
–6
0
4
8
–4
–8
–10
– 0.3
– 0.1
0.1
0.5
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
TA = 25°C
CREF = 10µF
R = 1k
R = 100
Ω
R = 500
Ω



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