ltc2493 Linear Technology Corporation, ltc2493 Datasheet - Page 27

• 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

applicaTions inForMaTion
Figure 21. Input Normal Mode Rejection vs Input Frequency with
Input Perturbation of 100% (60Hz Notch)
Figure 23. Input Normal Mode Rejection vs Input Frequency with
Input Perturbation of 100% (50Hz/60Hz Notch)
–100
–120
–100
–120
– 60
– 60
–20
–40
–80
–20
–40
–80
0
0
0
0
12.5 25 37.5 50 62.5 75 87.5 100 112.5 125 137.5 150 162.5 175 187.5 200
15
30
45
60
75
90
INPUT FREQUENCY (Hz)
INPUT FREQUENCY (Hz)
105 120 135 150 165 180 195 210 225 240
–100
–120
– 60
–20
–40
–80
MEASURED DATA
CALCULATED DATA
MEASURED DATA
CALCULATED DATA
0
Figure 25. Measure Input Normal Mode Rejection vs Input
Frequency with Input Perturbation of 150% (50Hz Notch)
0
12.5 25 37.5 50 62.5 75 87.5 100 112.5 125 137.5 150 162.5 175 187.5 200
V
V
V
V
T
V
V
V
V
T
CC
REF
IN(CM)
IN(P-P)
A
CC
REF
IN(CM)
IN(P-P)
A
= 25°C
= 25°C
= 5V
= 5V
= 5V
= 5V
= 2.5V
= 2.5V
= 5V
= 5V
2493 F21
2493 F23
INPUT FREQUENCY (Hz)
Figure 24. Measure Input Normal Mode Rejection vs Input
Frequency with Input Perturbation of 150% (60Hz Notch)
Figure 22. Input Normal Mode Rejection vs Input Frequency with
Input Perturbation of 100% (50Hz Notch)
V
V
(150% OF FULL SCALE)
IN(P-P)
IN(P-P)
–100
–120
–100
–120
–20
–40
– 60
–80
– 60
–20
–40
–80
0
0
= 5V
= 7.5V
0
0
12.5 25 37.5 50 62.5 75 87.5 100 112.5 125 137.5 150 162.5 175 187.5 200
15
30
45
V
V
V
T
A
CC
REF
IN(CM)
60
= 25°C
= 5V
= 5V
75
= 2.5V
2493 F25
90
INPUT FREQUENCY (Hz)
INPUT FREQUENCY (Hz)
105 120 135 150 165 180 195 210 225 240
V
V
(150% OF FULL SCALE)
IN(P-P)
IN(P-P)
MEASURED DATA
CALCULATED DATA
= 5V
= 7.5V
LTC2493
V
V
V
V
V
V
V
T
T
A
CC
REF
IN(CM)
CC
REF
IN(CM)
IN(P-P)
A
= 25°C

= 25°C
= 5V
= 5V
= 5V
= 5V
= 2.5V
= 2.5V
= 5V
2493fa
2493 F22
2493 F24