ADS1278-SP datasheet(19/57 Pages) TI1

Part #	ADS1278-SP

Description	Radiation Hardened 8-Ch Simultaneous-Sampling 24-Bit Analog-to-Digital Converter

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Manufacturer	TI1 [Texas Instruments]

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-

0.5

InputCommon-ModeVoltage(V)

14

12

10

8

6

4

2

0

14

12

10

8

6

4

2

0

5.5

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

Linearity

Noise

0

V

(V)

REF

14

12

10

8

6

4

2

0

-100

-104

-108

-112

-116

-120

-124

-128

3.5

THD

0.5

1.0

1.5

2.0

2.5

3.0

Linearity

THD:f

=1kHz,V

= 0.5dBFS

IN

-

See

for

ElectricalCharacteristics

V

OperatingRange.

REF

0

2

4

6

8

10

-55

-35

-15

5

25

45

65

85

105

125

Temperature (°C)

-2.0

-2.5

V

(V)

IN

10

8

6

4

2

0

-2

-4

-6

-8

-10

2.5

-1.5 -1.0 -0.5

0

0.5

1.0

1.5

2.0

T= 40 C

-

°

T=+25 C

°

T=+125 C

°

T=+105 C

°

13.1

13.2

13.3

13.4

13.5

13.6

13.7

13.8

13.9

14

14.1

14.2

14.3

26.2

26.4

26.6

26.8

27

27.2

27.4

27.6

27.8

28

28.2

28.4

28.6

-55 -35

-15

5

25

45

65

85 105 125

Temperature (°C)

High Speed and

High Resolution

Low Power Mode

Low-Speed Mode

-55 -35

-15

5

25

45

65

85 105 125

Temperature (°C)

110

120

130

140

150

160

170

19

ADS1278-SP

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SBAS937 – SEPTEMBER 2018

Product Folder Links: ADS1278-SP

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Typical Characteristics (continued)

At TA = 25°C, High-Speed mode, AVDD = 5 V, DVDD = 1.8 V, IOVDD = 3.3 V, fCLK = 27 MHz, VREFP = 2.5 V,

and VREFN = 0 V, unless otherwise noted.

Figure 39. Analog Input Differential Impedance vs

Temperature

Figure 40. Analog Input Differential Impedance vs

Temperature

Figure 41. Integral Nonlinearity vs Temperature

Figure 42. Linearity Error vs Input Level

Figure 43. Linearity and Total Harmonic Distortion vs

Reference Voltage

Figure 44. Noise and Linearity vs Input Common-Mode

Voltage

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