ADS1222

SBAS314B − APRIL 2004 − REVISED JANUARY 2009

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6

TYPICAL CHARACTERISTICS

At TA = −40°C to +85°C, VDD = +5V, fCLK = 2MHz, and VREF = +2.5V, unless otherwise noted.

Figure 1

ANALOG CURRENT vs TEMPERATURE

Temperature (

_C)

400

375

350

325

300

275

250

225

200

0

−25

25

50

75

125

−50

100

f

f

f

Buffer Off

Figure 2

f

f

f

f

Buffer On

ANALOG CURRENT vs TEMPERATURE

550

500

450

400

350

300

Temperature (

_C)

0

−25

25

50

75

125

−50

100

Figure 3

ANALOG CURRENT vs SUPPLY VOLTAGE

Supply Voltage (V)

3.5

3.0

4.0

4.5

5.0

5.5

2.5

500

450

400

350

300

250

Buffer Off

Buffer On

f

f

f

f

Figure 4

TEMPERATURE SENSOR VOLTAGE vs TEMPERATURE

Temperature (

_C)

5

−25

35

65

95

125

−55

150

140

130

120

110

100

90

80

70

Figure 5

Input Voltage, V

−3

−4

−2

−1

0

12

34

5

−5

10

8

6

4

2

0

−2

−4

−6

−8

−10

INTEGRAL NONLINEARITY vs INPUT VOLTAGE

−40_C

+25

_C

+85

_C

f

Buffer Off

Figure 6

−1.5

−2.5

−0.5

0.5

1.5

2.5

3.5

−3.5

INTEGRAL NONLINEARITY vs INPUT VOLTAGE

Input Voltage, V

f

Buffer On

10

8

6

4

2

0

−2

−4

−6

−8

−10

−40_C

+25

_C

+85

_C