INA821_18 datasheet(14/41 Pages) TI1

Part #	INA821

Description	35-關V Offset, 7-nV/?숰z Noise, Low-Power, Precision Instrumentation Amplifier

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Manufacturer	TI1 [Texas Instruments]

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Common Mode Voltage (V)

-15

-12

-9

-6

-3

0

3

6

9

12

15

-0.5

-0.3

-0.1

0.1

0.3

0.5

45 qC

25 qC

125 qC

Temperature (qC)

-50

-25

0

25

50

75

100

125

150

-40

-20

0

20

40

60

80

100

Gain Error (ppm)

0

2.5%

5%

7.5%

10%

12.5%

15%

0

-250

250

-200 -150 -100

-50

50

100

150

200

Gain Error (ppm)

0

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

0

-900

900

-600

-300

300

600

Time (1 s/div)

14

INA821

SBOS893A – AUGUST 2018 – REVISED DECEMBER 2018

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Product Folder Links: INA821

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Typical Characteristics (continued)

at TA = 25°C, VS = ±15 V, RL = 10 kΩ, VREF = 0 V, and G = 1 (unless otherwise noted)

G = 1000

Figure 25. 0.1-Hz to 10-Hz RTI Voltage Noise G = 1000

G = 1

Figure 26. 0.1-Hz to 10-Hz RTI Current Noise

N = 294

Mean = 35 ppm

Std. Dev. = 133 ppm

G=1

Figure 27. Typical Distribution of Gain Error G=1

N = 293

Mean = 152 ppm

Std. Dev. = 291 ppm

G=10

Figure 28. Typical Distribution of Gain Error G=10

VS = ±15 V

Figure 29. Input Bias Current vs Common-Mode Voltage

Average of 294 units

G = 1

Figure 30. Gain Error vs Temperature G = 1

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INA821 Datasheet(PDF) 14 Page - Texas Instruments

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