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TDC - GP1
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Time-to-Digital Applications
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Time to Digital Converters for Digital Strain Gage

PICOSTRAIN® PS08
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PICOSTRAIN® PS021
Strain Gage Applications
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Time to Digital Converters for Capacitance Measurement

PICOCAP® PS021
PICOCAP® PSA21
Capacitance Applications
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Time to Digital Converters for Speed Sensors

PICOTURN® 2G
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Speed Sensor Applications
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PICOCAP® PS021 Resolution

PICOCAP - PSØ21 Resolution Chart

The following table shows the measurement capabilities for different base capacitors. All data shown include a SINC3 filter. For getting the data with fast-settle mode multiply the noise values by 1.73 or reduce the #LSB val-ues by 0.8 Bit.All measurements are done with the PSA21-CAP evaluation system. Measured capacities:  Ceramic SMD with C0G dielektrikum, Measurement range 2, Vs = 5.0 V, Vcc = 3.3 V

Base Capacitance

47 pF

22 pF

4.7 pF

Frequency in Hz

RMS-Noise

in aF

ENOB

of. abs. cap.

RMS-Noise

in aF

ENOB

of. abs. cap.

RMS-Noise

in aF

ENOB

of. abs. cap.

15,000

680

16.1

390

15.8

310

13.9

5,000

390

16.9

260

16.4

210

14.4

1,000

170

18.1

110

17.6

75

15.9

500

110

18.7

75

18.2

55

16.4

200

70

19.4

50

18.7

32

17.2

100

45

20.0

35

19.3

21

17.8

50

32

20.5

22

19.9

14

18.4

20

21

21.1

15

20.5

9

19.0

10

14

21.7

10

21.1

6

19.6

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PS021 Resolution in Capacity Mode

PS021 Capacitance Resolution
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