LTC2420CS8 datasheet(28/36 Pages) LINER

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LTC2420

33a. Digitized Waveform

33b. Output FFT

Figure 33. Transient Signal Acquisiton

34a. Digitized Waveform with 2V DC Offset

34b. FFT Waveform with 2V DC Offset

34c. Digitized Waveform with No Offset

Figure 34. Using the LTC2420’s High Accuracy Wide Dynamic Range to Digitize

a 300mVP-P 15Hz Waveform with a Large DC Offset (VCC = 5V, VREF = 5V)

34d. FFT Waveform with No Offset

APPLICATIO S I FOR ATIO

TIME

0.05

0.10

–0.05

–0.10

–0.20

–0.15

0.20

500ms

0.15

fIN = 2Hz

2420 F33a

FREQUENCY (Hz)

–60

–40

–20

–80

–100

–120

2Hz

100sps

0V OFFSET

2420 F33b

TIME

2.00

2.05

2.10

2420 F34a

1.95

1.90

1.80

1.85

2.20

2.15

VIN = 300mVP-P + 2V DC

FREQUENCY (Hz)

–60

–40

–20

2420 F34b

–80

–100

–120

15Hz

100sps

2V OFFSET

TIME

0.00

0.05

0.10

2420 F34c

–0.05

–0.10

–0.20

–0.15

0.20

0.15

VIN = 300mVP-P + 0V DC

FREQUENCY (Hz)

–60

–40

–20

2420 F34d

–80

–100

–120

15Hz

100sps

0V OFFSET

LTC2420CS8 Datasheet(PDF) 28 Page - Linear Technology

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