ltc2493 Linear Technology Corporation, ltc2493 Datasheet - Page 6

• Manufacturer Part Number: ltc2493
• Description: 24-bit 2-/4-channel Delta Sigma Adc With Easy Drive Input Current Cancellation And I2c Interface
• Manufacturer: Linear Technology Corporation

LTC2493
Typical perForMance characTerisTics

–12
12
–4
–8
14
12
10
–1
–2
–3
8
4
0
8
0
3
2
1
0
6
4
2
–2.5
–2.5
–3
Integral Nonlinearity
(V
Total Unadjusted Error
(V
Noise Histogram (6.8sps)
10,000 CONSECUTIVE
READINGS
V
V
V
T
V
V
V
F
V
V
V
F
O
CC
REF
IN
A
CC
CC
O
CC
REF
IN(CM)
CC
REF
IN(CM)
–2
–2
–2.4
–45°C
= 25°C
= GND
= GND
85°C
= 0V
= 5V
= 5V
= 5V
= 5V
= 5V, V
= 5V, V
= 5V
= 5V
–1.5
–1.5
= 2.5V
–1.8
= 2.5V
OUTPUT READING (µV)
–1
–1
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
–1.2
REF
REF
–0.5
–0.5
25°C
= 5V)
= 5V)
–0.6
0
0
AVERAGE = –0.69µV
25°C
0.5
RMS = 0.60µV
0.5
0
1
1
0.6
–45°C
85°C
1.5
1.5
1.2
2493 G04
2493 G07
2493 G01
2
2
2.5
1.8
2.5
–12
–1
–2
–3
12
–4
–8
14
12
10
3
2
1
0
–1.25
8
4
0
–1.25
0
8
6
4
2
–3
Integral Nonlinearity
(V
Total Unadjusted Error
(V
Noise Histogram (7.5sps)
10,000 CONSECUTIVE
READINGS
V
V
V
T
V
V
V
F
V
V
V
F
O
O
CC
REF
IN
A
CC
CC
CC
REF
IN(CM)
CC
REF
IN(CM)
–2.4
= 25°C
= GND
= GND
= 0V
= 2.7V
= 5V
= 5V
–0.75
–0.75
= 2.5V
= 5V, V
= 5V, V
= 2.5V
= 2.5V
= 1.25V
= 1.25V
–1.8
OUTPUT READING (µV)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
–1.2
–0.25
–0.25
REF
REF
= 2.5V)
= 2.5V)
–0.6
–45°C, 25°C, 85°C
25°C
AVERAGE = –0.19µV
0.25
0.25
RMS = 0.59µV
0
0.6
85°C
–45°C
0.75
0.75
1.2
2493 G02
2493 G05
2493 G08
1.25
1.25
1.8
–12
12
–4
–8
–1
–2
–5
–1
–2
–3
–3
–4
3
2
1
0
8
4
0
–1.25
5
4
3
2
1
0
–1.25
Integral Nonlinearity
(V
Total Unadjusted Error
(V
Long-Term ADC Readings
0
V
V
V
F
V
V
V
F
V
V
V
V
O
O
CC
CC
REF
IN(CM)
CC
CC
REF
IN(CM)
CC
REF
IN
IN(CM)
= GND
= GND
= 0V
= 2.7V
= 2.7V
= 5V
–0.75
= 2.7V, V
–0.75
= 2.7V, V
= 2.5V
= 2.5V
10
= 5V
= 1.25V
= 1.25V
= 2.5V
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
20
T
RMS NOISE = 0.60µV
–0.25
–0.25
A
TIME (HOURS)
= 25°C
REF
REF
30
= 2.5V)
= 2.5V)
–45°C, 25°C, 85°C
25°C
0.25
0.25
40
0.75
0.75
85°C
–45°C
50
2493 G06
2493 G09
2493 G03
2493fa
1.25
1.25
60