AD8231ACPZ-R7 datasheet(3/24 Pages) AD

部品番号	AD8231ACPZ-R7

部品情報	Zero Drift, Digitally Programmable Instrumentation Amplifier

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AD8231

Rev. A | Page 3 of 24

SPECIFICATIONS

VS = 5 V, VREF = 2.5 V, G = 1, RL = 10 kΩ, TA = 25°C, unless otherwise noted.

Table 2.

Parameter

Conditions

Min

Typ

Max

Unit

INSTRUMENTATION AMPLIFIER

Offset Voltage

VOS RTI = VOSI + VOSO/G

Input Offset, VOSI

4

15

μV

Average Temperature Drift

TA = −40°C to +125°C

0.01

0.05

μV/°C

Output Offset, VOSO

15

30

μV

Average Temperature Drift

TA = −40°C to +125°C

0.05

0.5

μV/°C

Input Currents

Input Bias Current

250

500

pA

TA = −40°C to +125°C

5

nA

Input Offset Current

20

100

pA

TA = −40°C to +125°C

0.5

nA

Gains

1, 2, 4, 8, 16, 32, 64, or 128

Gain Error

G = 1

0.05

%

G = 2 to 128

0.8

%

Gain Drift

TA = −40°C to +125°C

G = 1 to 32

3

10

ppm/°C

G = 64

4

20

ppm/°C

G = 128

10

30

ppm/°C

Linearity

0.2 V to 4.8 V, 10 kΩ load

3

ppm

0.2 V to 4.8 V, 2 kΩ load

5

ppm

CMRR

G = 1

80

dB

G = 2

86

dB

G = 4

92

dB

G = 8

98

dB

G = 16

104

dB

G = 32

110

dB

G = 64

110

dB

G = 128

110

dB

Noise

en = √(eni2 + (eno/G)2), VIN+, VIN− = 2.5 V

Input Voltage Noise, eni

f = 1 kHz

32

nV/√Hz

f = 1 kHz, TA = −40°C

27

nV/√Hz

f = 1 kHz, TA = 125°C

39

nV/√Hz

f = 0.1 Hz to 10 Hz

0.7

μV p-p

Output Voltage Noise, eno

f = 1 kHz

58

nV/√Hz

f = 1 kHz, TA = −40°C

50

nV/√Hz

f = 1 kHz, TA = 125°C

70

nV/√Hz

f = 0.1 Hz to 10 Hz

1.1

μV p-p

Current Noise

f = 10 Hz

20

fA/√Hz

Other Input Characteristics

Common-Mode Input Impedance

10||5

GΩ||pF

Power Supply Rejection Ratio

100

115

dB

Input Operating Voltage Range

0.05

4.95

V

Reference Input

Input Impedance

28

kΩ

Voltage Range

−0.2

+5.2

V

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