LTC2983 Просмотр технического описания (PDF) - Linear Technology
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LTC2983 Datasheet PDF : 72 Pages
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LTC2983
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
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
ADC 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
Resolution (No Missing Codes)
Integral Nonlinearity
Offset Error
–FS ≤ VIN ≤ + FS
VIN(CM) = 1.25V (Note 15)
l 24
l
2
30
l
0.5
2
Bits
ppm of VREF
µV
Offset Error Drift
(Note 4)
l
10
20
nV/°C
Positive Full-Scale Error
Positive Full-Scale Drift
Input Leakage
(Notes 3, 15)
(Notes 3, 15)
(Note 18)
l
100
ppm of VREF
l
0.1
0.5
ppm of VREF/°C
l
1
nA
Negative Full-Scale Error
Negative Full-Scale Drift
Output Noise
Common Mode Input Range
RTD Excitation Current
(Notes 3, 15)
(Notes 3, 15)
(Note 5)
(Note 16)
l
100
l
0.1
0.5
l
0.8
1.5
l –0.05
VDD – 0.3
l –25 Table 30 25
ppm of VREF
ppm of VREF/°C
µVRMS
V
%
RTD Excitation Current Matching
Continuously Calibrated
l Error within Noise Level of ADC
Thermistor Excitation Current
(Note 16)
l –37.5 Table 53 37.5
%
Reference Electrical Characteristics
the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
Output Voltage
Output Voltage Temperature Coefficient
VREFOUT (Note 10)
I-Grade
Output Voltage Temperature Coefficient
C-Grade
Line Regulation
Load Regulation
Output Voltage Noise
IOUT(SOURCE) = 100µA
IOUT(SINK) = 100µA
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
Output Short-Circuit Current
Turn-On Time
Long Term Drift of Output Voltage (Note 13)
Short VREFOUT to GND
Short VREFOUT to VDD
0.1% Setting, CLOAD = 1µF
Hysteresis (Note 14)
∆T = 0°C to 70°C
∆T = –40°C to 85°C
The l denotes the specifications which apply over
MIN
TYP
MAX
2.49
2.51
l
3
15
l
3
20
l
10
l
5
l
5
4
4.5
40
30
115
60
30
70
UNITS
V
ppm/°C
ppm/°C
ppm/V
mV/mA
mV/mA
µVP-P
µVP-P
mA
mA
µs
ppm/√khr
ppm
ppm
2983fa
4
For more information www.linear.com/LTC2983
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