Datasheet

6
LTC2401/LTC2402
TYPICAL PERFOR A CE CHARACTERISTICS
UW
RMS Noise vs Reference Voltage Offset Error vs V
CC
RMS Noise vs V
CC
REFERENCE VOLTAGE (V)
0
RMS NOISE (ppm OF V
REF
)
12
16
20
4
24012 G10
8
4
10
14
18
6
2
0
1
2
3
5
V
CC
= 5V
T
A
= 25°C
V
CC
2.7
–5.0
OFFSET ERROR (ppm)
–2.5
0
2.5
5.0
3.2 3.7 4.2 4.7
24012 G11
5.2
V
REF
= 2.5V
T
A
= 25°C
V
CC
2.7
0
RMS NOISE (ppm)
2.5
5.0
3.2 3.7 4.2 4.7
24012 G12
5.2
V
REF
= 2.5V
T
A
= 25°C
Noise Histogram RMS Noise vs Code Out Offset Error vs Temperature
OUTPUT CODE (ppm)
–2
250
300
350
2
24012 G13
200
150
–1 0 1 3
100
50
0
NUMBER OF READINGS
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
CODE OUT (HEX)
–0.3
RMS NOISE (ppm)
0.50
0.75
5.3
24012 G14
0.25
0
2.5
1.00
V
CC
= 5V
V
REF
= 5V
V
IN
= –0.3V TO 5.3V
T
A
= 25°C
TEMPERATURE (°C)
–55
–5.0
OFFSET ERROR (ppm)
–2.5
0
2.5
5.0
–30 –5 20 45
24012 G15
70 95 120
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
Full-Scale Error vs Temperature
Full-Scale Error
vs Reference Voltage Full-Scale Error vs V
CC
TEMPERATURE (°C)
–55
–5.0
FULL-SCALE ERROR (ppm)
–2.5
0
2.5
5.0
–30 –5 20 45
24012 G16
70 95 120
V
CC
= 5V
V
REF
= 5V
V
IN
= 5V
REFERENCE VOLTAGE (V)
0
0
FULL-SCALE ERROR (ppm)
10
20
30
40
50
60
1234
24012 G17
5
V
CC
= 5V
V
IN
= V
REF
V
CC
2.7
0
FULL-SCALE ERROR (ppm)
3
2
1
6
5
4
3.2 3.7 4.2 4.7
24012 G18
5.2
V
REF
= 2.5V
V
IN
= 2.5V
T
A
= 25°C