LTC2485CDD datasheet(29/40 Pages) LINER

29 / 40 page

LTC2485

2485fa

Figure 29. Input Signal Using the Internal Oscillator

Figure 30. Input Refered Noise Equivalent Bandwidth

of an Input Connected White Noise Source

Figure 31. Input Normal Mode Rejection,

Internal Oscillator and 50Hz Notch Mode

Figure 33. Input Normal Mode Rejection at DC

Figure 32. Input Normal Mode Rejection at DC

Figure 34. Input Normal Mode Rejection at fs = 256fN

DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)

–3

–2

–1

2485 F29

–4

–5

–6

50Hz MODE

60Hz MODE

50Hz AND

60Hz MODE

INPUT NOISE SOURCE SINGLE POLE

EQUIVALENT BANDWIDTH (Hz)

0.1

100

10k

100k

2485 F30

0.1

100

50Hz MODE

60Hz MODE

DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)

0fS 2fS 3fS 4fS 5fS 6fS 7fS 8fS 9fS10fS11fS12fS

2485 F31

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)

0fS

2485 F32

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

2fS 3fS 4fS 5fS 6fS 7fS 8fS 9fS 10fS

INPUT SIGNAL FREQUENCY (Hz)

2485 F33

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

2fN 3fN 4fN 5fN 6fN 7fN 8fN

fN = fEOSC/5120

INPUT SIGNAL FREQUENCY (Hz)

250fN 252fN 254fN 256fN 258fN 260fN 262fN

2485 F34

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

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