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LTC2984 Datasheet(PDF) 4 Page - Analog Devices

Part # LTC2984
Description  Multi-Sensor High Accuracy Digital Temperature Measurement System with EEPROM
PDF  78 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC2984 Datasheet(HTML) 4 Page - Analog Devices

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LTC2984
4
2984fb
For more information www.linear.com/LTC2984
ADC ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
–FS ≤ VIN ≤ + FS
l
24
Bits
Integral Nonlinearity
VIN(CM) = 1.25V (Note 15)
l
2
30
ppm of VREF
Offset Error
l
0.5
2
µV
Offset Error Drift
(Note 4)
l
10
20
nV/°C
Positive Full-Scale Error
(Notes 3, 15)
l
100
ppm of VREF
Positive Full-Scale Drift
(Notes 3, 15)
l
0.1
0.5
ppm of VREF/°C
Input Leakage
(Note 19)
H-Grade
l
l
1
10
nA
nA
Negative Full-Scale Error
(Notes 3, 15)
l
100
ppm of VREF
Negative Full-Scale Drift
(Notes 3, 15)
l
0.1
0.5
ppm of VREF/°C
Input Referred Noise
(Note 5)
H-Grade
l
l
0.8
1.5
2.0
µVRMS
µVRMS
Common Mode Input Range
l
–0.05
VDD – 0.3
V
RTD Excitation Current
(Note 16)
l
–25
Table 33
25
%
RTD Excitation Current Matching
Continuously Calibrated
l
Error within Noise Level of ADC
Thermistor Excitation Current
(Note 16)
l
–37.5
Table 57
37.5
%
The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C.
COMPLETE SYSTEM ELECTRICAL CHARACTERISTICS The
l
denotes the specifications
which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
l
2.85
5.25
V
Supply Current
l
15
20
mA
Sleep Current
l
25
60
µA
Input Range
All Analog Input Channels
l
–0.05
VDD – 0.3
V
Output Rate
Two Conversion Cycle Mode (Notes 6, 9)
l
150
164
170
ms
Output Rate
Three Conversion Cycle Mode (Notes 6, 9)
l
225
246
255
ms
Input Common Mode Rejection
50Hz/60Hz (Note 4)
l
120
dB
Input Normal Mode Rejection
60Hz (Notes 4, 7)
l
120
dB
Input Normal Mode Rejection
50Hz (Notes 4, 8)
l
120
dB
Input Normal Mode Rejection
50Hz/60Hz (Notes 4, 6, 9)
l
75
dB
Power-On Reset Threshold
2.25
V
Analog Power-Up
(Note 11)
l
100
ms
Digital Initialization
(Note 12)
l
100
ms



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