AD7293 datasheet(19/78 Pages) AD

19 / 78 page

Data Sheet

AD7293

Rev. B | Page 19 of 78

Figure 26. Temperature Error vs. Capacitance from Dx+ to Dx−

Figure 27. Temperature Error vs. Series Resistance for Typical Devices

Figure 28. Temperature Sensor Error vs. Device Under Test (DUT)

Temperature

Figure 29. High-Side Current Sensor at Common-Mode Rejection Ratio (CMRR)

Figure 30. ADC Reference vs. Temperature

Figure 31. Closed-Loop RSENSE Voltage Regulation vs. Temperature

10000

1000

100

CAPACITANCE (pF)

–7.5

–7.0

–6.5

–6.0

–5.5

–5.0

–4.5

–4.0

–3.5

–3.0

–2.5

–2.0

–1.5

–1.0

–0.5

0.5

1.0

SENSOR RESULT AT +25°C

SENSOR RESULT AT +105°C

SENSOR RESULT AT +150°C

SENSOR RESULT AT –40°C

SERIES RESISTANCE (kΩ)

–0.5

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

SENSOR RESULT AT +25°C

SENSOR RESULT AT +105°C

SENSOR RESULT AT +150°C

SENSOR RESULT AT –40°C

SENSOR RESULT AT –55°C

–40

–20

100

120

DUT TEMPERATURE (°C)

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

–60

–120

–115

–110

–105

–100

–95

–90

–85

–80

–75

–70

–65

100

100M

10M

100k

10k

FREQUENCY (Hz)

2.504

2.495

2.496

2.497

2.498

2.499

2.500

2.501

2.502

2.503

–60

–40

140

120

100

–20

TEMPERATURE (°C)

TESTER TRIMMED DUT1

TESTER TRIMMED DUT6

TESTER TRIMMED DUT4

TESTER TRIMMED DUT9

TESTER TRIMMED DUT5

TESTER TRIMMED DUT10

TESTER TRIMMED DUT11

TESTER TRIMMED DUT2

TESTER TRIMMED DUT7

TESTER TRIMMED DUT12

TESTER TRIMMED DUT3

TESTER TRIMMED DUT8

TESTER TRIMMED DUT13

–40

–20

120

100

TEMPERATURE (°C)

0.10002

0.10004

0.10006

0.10008

0.10010

0.10012

0.10014

0.10016

0.10018

0.10020

0.10022

MIDSCALE DRIFT WITH EXTERNAL REFERENCE

MIDSCALE DRIFT WITH INTERNAL REFERENCE

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