AD7152_17 datasheet(8/24 Pages) AD

8 / 24 page

AD7152/AD7153

Data Sheet

Rev. A | Page 8 of 24

TYPICAL PERFORMANCE CHARACTERISTICS

0.05

0.04

0.03

0.02

0.01

0.02

0.03

0.04

0.05

–2

–1

CAPACITANCE (pF)

Figure 6. Capacitance Input Integral Nonlinearity,

VDD = 3.3 V, See Figure 34

–0.25

–0.20

–0.15

–0.10

–0.05

0.00

0.05

0.10

0.15

0.20

100

TEMPERATURE (°C)

TC ≈ 28ppm/°C

Figure 7. Capacitance Input Gain Drift vs. Temperature,

VDD = 3.3 V, Range = ±2 pF

–0.4

–0.2

0.2

0.4

–50

–25

100

TEMPERATURE (°C)

Figure 8. Capacitance Input Offset Drift vs. Temperature,

VDD = 3.3 V, CIN and EXC Pins Open Circuit

–12

–10

–8

–6

–4

–2

100

150

200

250

300

350

CAP LOAD TO GND (pF)

3pF

9pF

Figure 9. Capacitance Input Error vs. Capacitance Between CIN and GND;

Single-Ended Mode, CIN(+) to EXC = 3 pF and 9 pF, VDD = 3.3 V

–12

–10

–8

–6

–4

–2

100

150

200

250

300

350

CAP LOAD TO GND (pF)

2pF

8pF

Figure 10. Capacitance Input Error vs. Capacitance Between CIN and GND,

Differential Mode, CIN(+) to EXC = 2 pF and 8 pF,

CIN(−) to EXC = 0 pF and 6 pF, VDD = 3.3 V

–0.3

–0.2

–0.1

0.1

0.2

0.3

100

150

200

250

300

350

CAP LOAD TO GND (pF)

Figure 11. Capacitance Input Error vs. Capacitance Between EXC and GND,

Single-Ended Mode, CIN(+) to EXC = 9 pF, VDD = 3.3 V

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