LTC2485 LINER [Linear Technology], LTC2485 Datasheet - Page 6

• Manufacturer Part Number: LTC2485
• Description: 24-Bit ?? ADC with Easy Drive Input Current Cancellation and I2C Interface
• Manufacturer: LINER [Linear Technology]

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