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LTC2483CDD Datasheet(PDF) 25 Page - Linear Technology

Part # LTC2483CDD
Description  16-Bit ?誇 ADC with Easy Drive Input Current Cancellation and I2C Interface
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2483CDD Datasheet(HTML) 25 Page - Linear Technology

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25
LTC2483
2483f
APPLICATIO S I FOR ATIO
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0
–3
–2
–1
0
4
2483 F24
–4
–5
–6
1
2
3
5
50Hz fEOSC = 256kHz
60Hz fEOSC = 307.2kHz
INTERNAL
OSCILLATOR
Figure 24. Input Signal Using the Internal Oscillator
INPUT NOISE SOURCE SINGLE POLE
EQUIVALENT BANDWIDTH (Hz)
1
10
0.1
1
10
100
1k
10k
100k
1M
2483 F25
0.1
100
Figure 25. Input Refered Noise Equivalent Bandwidth
of an Input Connected White Noise Source
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0fS 2fS 3fS 4fS 5fS 6fS 7fS 8fS 9fS10fS11fS12fS
2483 F26
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
Figure 26. Input Normal Mode Rejection,
External Oscillator (fEOSC = 256kHz)
50Hz Rejection
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
0fS
2483 F27
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
2fS 3fS 4fS 5fS 6fS 7fS 8fS 9fS 10fS
Figure 27. Input Normal Mode Rejection at DC
(Internal Oscillator)
INPUT SIGNAL FREQUENCY (Hz)
2483 F28
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
fN
0
2fN 3fN 4fN 5fN 6fN 7fN 8fN
fN = fEOSC/5120
INPUT SIGNAL FREQUENCY (Hz)
250fN 252fN 254fN 256fN 258fN 260fN 262fN
2483 F29
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
Figure 29. Input Normal Mode Rejection at fs = 256fN
Figure 28. Input Normal Mode Rejection at DC



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