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LTC2485CDD Datasheet(PDF) 6 Page - Linear Technology

Part # LTC2485CDD
Description  24-Bit ?誇 ADC with Easy Drive Input Current Cancellation and I2C Interface
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2485CDD Datasheet(HTML) 6 Page - Linear Technology

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LTC2485
2485fa
TYPICAL PERFOR A CE CHARACTERISTICS
Total Unadjusted Error
(VCC = 5V, VREF = 5V)
Total Unadjusted Error
(VCC = 5V, VREF = 2.5V)
Total Unadjusted Error
(VCC = 2.7V, VREF = 2.5V)
Integral Nonlinearity
(VCC = 5V, VREF = 5V)
Integral Nonlinearity
(VCC = 5V, VREF = 2.5V)
Integral Nonlinearity
(VCC = 2.7V, VREF = 2.5V)
Noise Histogram (6.8sps)
Long-Term ADC Readings
Noise Histogram (7.5sps)
INPUT VOLTAGE (V)
–3
–1
1
3
–2
0
2
–0.75
–0.25
0.25
0.75
2485 G03
1.25
–1.25
VCC = 2.7V
VREF = 2.5V
VIN(CM) = 1.25V
–45
°C, 25°C, 90°C
INPUT VOLTAGE (V)
–12
–4
4
12
–8
0
8
–0.75
–0.25
0.25
0.75
2485 G05
1.25
–1.25
VCC = 5V
VREF = 2.5V
VIN(CM) = 1.25V
85
°C
25
°C
–45
°C
INPUT VOLTAGE (V)
–12
–4
4
12
–8
0
8
–0.75
–0.25
0.25
0.75
2485 G06
1.25
–1.25
VCC = 2.7V
VREF = 2.5V
VIN(CM) = 1.25V
85
°C
25
°C
–45
°C
INPUT VOLTAGE (V)
–12
–4
4
12
–8
0
8
–1.5
–0.5
0.5
1.5
2485 G04
2.5
–2
–2.5
–1
0
1
2
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
85
°C
25
°C
–45
°C
OUTPUT READING (
µV)
–3
8
10
12
0.6
2485 G07
6
4
–1.8
–0.6
–2.4
1.2
–1.2
0
1.8
2
0
14
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 5V
VIN = 0V
TA = 25°C
RMS = 0.60
µV
AVERAGE = –0.69
µV
OUTPUT READING (
µV)
–3
8
10
12
0.6
2485 G08
6
4
–1.8
–0.6
–2.4
1.2
–1.2
0
1.8
2
0
14
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
TA = 25°C
RMS = 0.59
µV
AVERAGE = –0.19
µV
TIME (HOURS)
0
–5
–3
–1
1
10
20
30
40
2485 G09
50
3
5
–4
–2
0
2
4
60
VCC = 5V, VREF = 5V, VIN = 0V, VIN(CM) = 2.5V
TA = 25°C, RMS NOISE = 0.60µV
INPUT VOLTAGE (V)
–3
–1
1
3
–2
0
2
–1.5
–0.5
0.5
1.5
2485 G01
2.5
–2
–2.5
–1
0
1
2
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
85
°C
–45
°C
25
°C
INPUT VOLTAGE (V)
–3
–1
1
3
–2
0
2
–0.75
–0.25
0.25
0.75
2485 G02
1.25
–1.25
VCC = 5V
VREF = 2.5V
VIN(CM) = 1.25V
–45
°C, 25°C, 90°C


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