AD4110-1 datasheet(6/74 Pages) AD

No de pièce	AD4110-1

Description	Universal Input Analog Front End 24-Bit ADC Industrial Process Control Systems

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Fabricant	AD [Analog Devices]

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AD4110-1

Data Sheet

Rev. 0 | Page 6 of 74

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

RTD EXCITATION CURRENTS14

External reference voltage (VREF) =

2.5 V ± 0%

Current Outputs

0.1 to 1

mA

Programmable (see Table 30)

Initial Error, Internal Reference

Resistor

−0.3

+0.3

%

Current ≥ 400 µA, TA = 25°C

−1

+1

%

Current = 100 µA, TA = 25°C

Initial Drift

130

ppm

See Figure 44 and Figure 45

Drift vs. Temperature2

−45

+45

ppm/°C

Internal reference resistor (including

reference resistor drift)

−18

+18

ppm/°C

External reference resistor (excluding

reference resistor drift)

Drift vs. Time5, 15

150

ppm

Internal resistor, over 1000 hours

150

ppm

External resistor, over 1000 hours

Load Regulation2

0.01

%/V

Line Regulation2

4

ppm/V

Related to VSS and VDD

Noise2

See Table 22 and Table 23

TA = 25°C

Current Matching15

0.05

%

AIN(+) and AIN(−) pins, excludes

100 µA

Current Matching Drift

0.0002

%/°C

AIN(+) and AIN(−) pins, excludes

100 µA

Compliance

VDD − 5

V

REFERENCE VOLTAGE (INPUT)

Reference Voltage Input, VREF2, 14

1

2.5

AVDD5 – 1.6

V

REFIN(+) − REFIN(−) = VREF

RTD mode disabled

2.45

2.5

2.55

V

RTD mode enabled

VREF Input Current

200

nA

VREF+ reference buffer on

100

µA

VREF− reference buffer on

36

µA/V

VREF+ reference buffer off

75

µA/V

VREF− reference buffer off

VREF Input Current Drift

1.3

nA/°C

VREF+ reference buffer on

−3.5

nA/°C

VREF− reference buffer on

10

nA/V/°C

VREF+ reference buffer off

10

nA/V/°C

VREF− reference buffer off

Absolute REFIN Voltage Limits

AGND − 0.05

AVDD5 + 0.05

V

AGND

AVDD5

V

Reference buffer on

Common-Mode Rejection

95

dB

REFERENCE VOLTAGE (OUTPUT)

Output Voltage

2.5

V

REFOUT pin

Initial Accuracy2

−0.16

+0.16

V

TA = 25°C

Temperature Coefficient2

10

50

ppm/°C

Long Term Stability5

600

ppm

Over 1000 hours

Reference Load Current, ILOAD

10

mA

Power Supply Rejection

93

dB

Load Regulation

75

µV/mA

VBIAS

Voltage

AGND

V

Output Current Limit

±50

µA

Source or sink, depending on the

AIN(−) pin potential referenced to

AGND

OPEN WIRE DETECTION CURRENTS

Current Output

±0.71

±1

±1.45

µA

±100

µA

Compliance

VSS + 2

VDD − 2

V

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