Datasheet

LTC2495
31
2495fd
Figure 29. Input Normal Mode
Rejection 2x Speed Mode with and
Without Running Averaging
Figure 30. Offset Error vs Output Data
Rate and Temperature
Figure 31. +FS Error vs Output Data
Rate and Temperature
Figure 32.–FS Error vs Output Data
Rate and Temperature
Figure 33. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 34. Resolution (INL
MAX
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 36. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 37. Resolution (INL
MAX
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 35. Offset Error vs Output
Data Rate and Temperature
applications inForMation
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
48
–70
–80
–90
–100
–110
–120
–130
–140
54 58
2495 F29
50 52
56 60 62
NORMAL MODE REJECTION (dB)
NO AVERAGE
WITH
RUNNING
AVERAGE
OUTPUT DATA RATE (READINGS/SEC)
–10
OFFSET ERROR (ppm OF V
REF
)
10
30
50
0
20
40
20 40 60 80
2495 F30
100100 30 50 70 90
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
V
IN
= 0V
f
O
= EXT CLOCK
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
0
+FS ERROR (ppm OF V
REF
)
500
1500
2000
2500
3500
10
50
70
2495 F31
1000
3000
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
f
O
= EXT CLOCK
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–3500
–FS ERROR (ppm OF V
REF
)
–3000
–2000
–1500
–1000
0
10
50
70
2495 F32
–2500
–500
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
f
O
= EXT CLOCK
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
2495 F33
14
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
V
IN
= 0V
f
O
= EXT CLOCK
RES = LOG 2 (V
REF
/NOISE
RMS
)
T
A
= 25°C, 85°C
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
14
40
90
100
20
30
60 80
T
A
= 85°C
T
A
= 25°C
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
f
O
= EXT CLOCK
RES = LOG 2 (V
REF
/INL
MAX
)
2495 F34
OUTPUT DATA RATE (READINGS/SEC)
0
–10
OFFSET ERROR (ppm OF V
REF
)
–5
5
10
20
10
50
70
2495 F35
0
15
40
90
100
20
30
60 80
V
CC
= 5V, V
REF
= 2.5V
V
CC
= V
REF
= 5V
V
IN(CM)
= V
REF(CM)
V
IN
= 0V
f
O
= EXT CLOCK
T
A
= 25oC
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
2495 F36
14
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
IN
= 0V
f
O
= EXT CLOCK
T
A
= 25oC
RES = LOG 2 (V
REF
/NOISE
RMS
)
V
CC
= 5V, V
REF
= 2.5V, 5V
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
14
40
90
100
20
30
60 80
V
CC
= 5V, V
REF
= 2.5V
V
CC
= V
REF
= 5V
V
IN(CM)
= V
REF(CM)
V
IN
= 0V
REF
–
= GND
f
O
= EXT CLOCK
T
A
= 25°C
RES = LOG 2 (V
REF
/INL
MAX
)
2495 F37