Cirrus-logic AN31 Manual de usuario descargar pdf (Pagina 25)

400

300

200

100

0

-4 -3 -2 -1 0 1 2 3 4

1000 Conversions

1 = 1.07 LSB

Average = 0.035 LSB

Output word

rate = 50/second

OUTPUT CODE (1 LSB = 34.3 nV)

OCCURANCES

4

68

227

379

249

59

13

1

Figure 18. Noise Histogram of 1000 Conversions.

2.0

1.0

0.0

-1.0

-2.0

0.0 0.5 1.0

TIME (hour)

NOISE (LSBs)

1 LSB = 34.3 nV

Figure 19. Digitizer Stability Over One Hour.

Bridge Transducer Digitizer Circuits

AN31REV3 25

1 2 ... 20 21 22 23 24 25 26 27 28

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