ADS1262 datasheet(13/134 Pages) TAOS

13 / 134 page

Reference Voltage (V)

0.5

1.5

2.5

3.5

4.5

-300

-200

-100

100

200

300

400

D054

20 SPS, Gain = 1

20 SPS, Gain = 32

400 SPS, Gain = 1

7200 SPS, Gain = 1

38400 SPS, Gain = 1

Temperature (GC)

-50

-25

100

125

-50

-25

D030

PGA Bypass

Gain = 1

Gain = 2

Gain = 4

Gain = 8

Gain = 16

Gain = 32

Input Referred Offset Voltage Drift (nV/GC)

D064

Gain = 1

Gain = 32

Input Referred Offset Voltage Drift (nV/GC)

100

D072

Gain = 1

Gain = 32

Temperature (GC)

-50

-25

100

125

-4

-3

-2

-1

D028

PGA Bypass

Gain = 1

Gain = 2

Gain = 4

Gain = 8

Gain = 16

Gain = 32

Temperature (GC)

-50

-25

100

125

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

D029

PGA Bypass

Gain = 1

Gain = 2

Gain = 4

Gain = 8

Gain = 16

Gain = 32

ADS1262, ADS1263

www.ti.com

SBAS661B – FEBRUARY 2015 – REVISED JULY 2015

7.8 Typical Characteristics

at TA = 25°C, VAVDD = 5 V, VAVSS = 0 V, VDVDD = 3.3 V, VREF = 2.5 V, and fCLK = 7.3728 MHz (unless otherwise noted); typical

ADC1 characteristics at data rate = 20 SPS and gain = 1; typical ADC2 characteristics at data rate = 10 SPS and gain = 1

After offset calibration, shorted inputs

Chop mode on, after offset calibration, shorted inputs

Figure 4. ADC1 Offset Voltage vs Temperature

Figure 5. ADC1 Offset Voltage vs Temperature

Shorted inputs, 30 units

Chop mode on, shorted inputs, 30 units

Figure 6. ADC1 Offset Voltage vs Temperature Distribution

Figure 7. ADC1 Offset Voltage vs Temperature Distribution

Shorted inputs

After gain calibration

Figure 8. ADC1 Offset Voltage vs Reference Voltage

Figure 9. ADC1 Gain Error vs Temperature

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