Datasheet

5
LTC2421/LTC2422
24212f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Total Unadjusted Error (3V Supply) INL (3V Supply)
Negative Extended Input Range
Total Unadjusted Error (3V Supply)
Positive Extended Input Range
Total Unadjusted Error (3V Supply)
Total Unadjusted Error (5V Supply) INL (5V Supply)
Negative Extended Input Range
Total Unadjusted Error (5V Supply)
Offset Error vs Reference Voltage
Positive Extended Input Range
Total Unadjusted Error (5V Supply)
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
2.0
24212 G01
–2
–6
0
4
8
–4
–8
–10
0.5
1.0
1.5
2.5
V
CC
= 3V
V
REF
= 2.5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
2.0
24212 G02
–2
–6
0
4
8
–4
–8
–10
0.5
1.0
1.5
2.5
V
CC
= 3V
V
REF
= 2.5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
–10
–6
–2
2
–0.05
–0.10
–0.15 –0.20
24212 G03
–0.25
10
–0.30
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 3V
V
REF
= 2.5V
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
T
A
= –55°C
INPUT VOLTAGE (V)
2.50
–10
–6
–2
2
2.55
2.60
2.65 2.70
24212 G04
2.75
10
2.80
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 3V
V
REF
= 2.5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
4
24212 G05
–2
–6
0
4
8
–4
–8
–10
1
2
3
5
V
CC
= 5V
V
REF
= 5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
4
24212 G06
–2
–6
0
4
8
–4
–8
–10
1
2
3
5
V
CC
= 5V
V
REF
= 5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
–10
–6
–2
2
–0.05
–0.10
–0.15 –0.20
24212 G07
–0.25
10
–0.30
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 5V
V
REF
= 5V
T
A
= 90°C
T
A
= 25°C
T
A
= –55°C
T
A
= –45°C
INPUT VOLTAGE (V)
5.00
–10
–6
–2
2
5.05
5.10
5.15 5.20
24212 G08
5.25
10
5.30
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 5V
V
REF
= 5V
T
A
= –45°C
T
A
= –55°C
T
A
= 25°CT
A
= 90°C
REFERENCE VOLTAGE (V)
0
OFFSET ERROR (ppm)
90
120
150
4
24212 G09
60
30
0
1
2
3
5
V
CC
= 5V
T
A
= 25°C