AD7142 datasheet(9/68 Pages) AD

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AD7142

Rev. 0 | Page 9 of 68

TYPICAL PERFORMANCE CHARACTERISTICS

VCC (V)

820

860

840

920

900

880

940

960

980

1000

2.7

2.9

2.8

3.0

3.1

3.2

3.3

3.4

3.5

3.6

DEVICE 3

DEVICE 1

DEVICE 2

Figure 6. Supply Current vs. Supply Voltage

(VCC = AVCC + DVCC, ICC = AICC + DICC)

2.7

2.8

2.9

3.0

3.1

3.2

3.4

3.3

3.5

3.6

VCC (V)

100

120

140

160

180

LP_CONV_DELAY = 200ms

LP_CONV_DELAY = 400ms

LP_CONV_DELAY = 600ms

LP_CONV_DELAY = 800ms

Figure 7. Low Power Supply Current vs. Supply Voltage,

Decimation Rate = 256 (VCC = AVCC + DVCC, ICC = AICC + DICC)

2.7

2.8

2.9

3.0

3.10

3.2

3.4

3.3

3.5

3.6

VCC (V)

100

120

LP_CONV_DELAY = 200ms

LP_CONV_DELAY = 600ms

LP_CONV_DELAY = 800ms

LP_CONV_DELAY = 400ms

Figure 8. Low Power Supply Current vs. Supply Voltage

Decimation Rate = 128 (VCC = AVCC + DVCC, ICC = AICC + DICC)

1.40

1.55

1.70

1.85

2.00

2.15

2.30

2.45

2.7

2.9

2.8

3.0

3.1

3.2

3.3

3.4

3.5

3.6

VCC (V)

DEVICE 2

DEVICE 3

DEVICE 1

Figure 9. Shutdown Supply Current vs. Supply Voltage

(VCC = AVCC + DVCC, ICC = AICC + DICC)

1.10

1.05

1.00

0.95

0.90

0.85

0.80

100

150

200

250

300

350

400

450

500

CAPACITANCE LOAD ON SOURCE (pF)

DEVICE 3

DEVICE 2

DEVICE 1

Figure 10. Supply Current vs. Capacitive Load on SRC (ICC = AICC + DICC)

16015

16010

16005

16000

15995

15990

15985

15980

100

150

200

250

300

350

400

450

500

CAPACITANCE LOAD ON SOURCE (pF)

DEVICE 3

DEVICE 2

DEVICE 1

Figure 11. Output Code vs. Capacitive Load on SRC

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