Datasheet

LTC2483
25
2483fc
applicaTions inFormaTion
Figure 26. Input Normal Mode Rejection,
External Oscillator (f
EOSC
= 256kHz)
50Hz Rejection
Figure 28. Input Normal Mode Rejection at DC
INPUT SIGNAL FREQUENCY (Hz)
INPUT NORMAL MODE REJECTION (dB)
2483 F28
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
f
N
0 2f
N
3f
N
4f
N
5f
N
6f
N
7f
N
8f
N
f
N
= f
EOSC/5120
Figure 29. Input Normal Mode Rejection at f
s
= 256f
N
INPUT SIGNAL FREQUENCY (Hz)
250f
N
252f
N
254f
N
256f
N
258f
N
260f
N
262f
N
INPUT NORMAL MODE REJECTION (dB)
2483 F29
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0 f
S
2f
S
3f
S
4f
S
5f
S
6f
S
7f
S
8f
S
9f
S
10f
S
11f
S
12f
S
INPUT NORMAL MODE REJECTION (dB)
2483 F26
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
Figure 27. Input Normal Mode Rejection at DC
(Internal Oscillator)
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0 f
S
INPUT NORMAL MODE REJECTION (dB)
2483 F27
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
2f
S
3f
S
4f
S
5f
S
6f
S
7f
S
8f
S
9f
S
10f
S
Figure 24. Input Signal Using the Internal Oscillator
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0
INPUT SIGNAL ATTENUATION (dB)
–3
–2
–1
0
4
2483 F24
–4
–5
–6
1
2
3
5
50Hz f
EOSC
= 256kHz
60Hz f
EOSC
= 307.2kHz
INTERNAL
OSCILLATOR
Figure 25. Input Refered Noise Equivalent Bandwidth
of an Input Connected White Noise Source
INPUT NOISE SOURCE SINGLE POLE
EQUIVALENT BANDWIDTH (Hz)
1
INPUT REFERRED NOISE
EQUIVALENT BANDWIDTH (Hz)
10
0.1 1 10 100 1k 10k 100k 1M
2483 F25
0.1
100