CY8C3865LTI-059 datasheet(86/129 Pages) CYPRESS

86 / 129 page

PSoC® 3: CY8C38 Family

Data Sheet

Document Number: 001-11729 Rev. *R

Page 86 of 129

Table 11-23. Delta-sigma ADC RMS Noise in Counts vs. Input Range and Sample Rate, 16-bit, Internal Reference, Single Ended

Sample rate,

Input Voltage Range

sps

0 to VREF

0 to VREF x 2

VSSA to VDDA

0 to VREF x 6

2000

1.21

1.02

1.14

0.99

3000

1.28

1.15

1.25

1.22

6000

1.36

1.22

1.38

1.22

12000

1.44

1.33

1.43

1.40

24000

1.67

1.50

1.43

1.53

48000

1.91

1.60

1.85

1.67

Table 11-24. Delta-sigma ADC RMS Noise in Counts vs. Input Range and Sample Rate, 16-bit, Internal Reference, Differential

Sample rate,

Input Voltage Range

sps

±VREF

±VREF / 2

±VREF / 4

±VREF / 8

±VREF / 16

2000

0.56

0.65

0.74

1.02

1.77

4000

0.58

0.72

0.81

1.10

1.98

8000

0.53

0.72

0.82

1.12

2.18

15625

0.58

0.72

0.85

1.13

2.20

32000

0.60

0.76

INVALID OPERATING REGION

43750

0.58

0.75

48000

0.59

Table 11-25. Delta-sigma ADC RMS Noise in Counts vs. Input Range and Sample Rate, 20-bit, External Reference, Single Ended

Sample rate,

Input Voltage Range

sps

0 to VREF

0 to VREF x 2

VSSA to VDDA

0 to VREF x 6

1.28

1.24

6.02

0.97

1.33

1.28

6.09

0.98

1.77

1.26

6.28

0.96

1.65

0.91

6.84

0.95

187

1.87

1.06

7.97

1.01

Table 11-26. Delta-sigma ADC RMS Noise in Counts vs. Input Range and Sample Rate, 20-bit, External Reference, Differential

Sample rate, sps

Input Voltage Range

±VREF

±VREF / 2

±VREF / 4

±VREF / 8

±VREF / 16

0.70

0.84

1.02

1.40

2.65

11.3

0.69

0.86

0.96

1.40

2.69

22.5

0.73

0.82

1.25

1.77

2.67

0.76

0.94

1.02

1.76

2.75

0.75

1.01

1.13

1.65

2.98

170

0.75

0.98

INVALID OPERATING REGION

187

0.73

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