11

DDC101

®

TYPICAL PERFORMANCE CURVES (CONT)

ELECTRICAL

System Clock = 2MHz, V

S = ±5VDC, VREF = –2.5V, L = 1 Integration/Conversion, and TA = +25°C, unless otherwise noted.

NOISE vs INPUT CAPACITANCE, UNIPOLAR INPUT

40

35

30

25

20

15

10

5

0

0

100

200

500

1000

2000

C

IN (pF)

No CDS

CDS On, K = 16

1ms Integration Time

M = 128 Oversamples

CHANGE IN I

B vs TEMPERATURE

2.0

0

–2.0

–4.0

–6.0

–8.0

–40

–20

0

20

40

60

80

100

Temperature (°C)

NOISE vs TEMPERATURE, UNIPOLAR INPUT

5

4

3

2

1

0

–40

–20

0

25

45

65

85

Temperature (°C)

1ms Integration Time

K = 16 Acquisition Clocks

M = 128 Oversamples

NOISE vs INTEGRATION TIME, UNIPOLAR INPUT

5

4

3

2

1

0

0.1

1

10

100

Integration Time (ms)

M = 256 O/S

M = 16 O/S

M = 64 O/S

K = 16 Acquisition Clocks

C

IN = 0pF

INPUT OFFSET VOLTAGE vs INPUT CAPACITANCE

0.050

0.000

–0.050

0.100

–0.150

–0.200

–0.250

–0.300

0

100

500

C

IN (pF)

NOISE vs OVERSAMPLING, UNIPOLAR INPUT

50

10

1.0

0.5

1248

16

32

64

128

256

M Oversamples

L = 1 Integration/Conversion

L = 2

L = 4

L = 8

L = 16

L = 32

L = 64

L = 128

L = 256

1ms Integration Time

K = 16 Acquisition Clocks

C

IN = 0pF