AD8420ARMZ-R7 datasheet(5/10 Pages) AD

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Preliminary Technical Data

AD8420

Rev. PrD | Page 5 of 5

GAIN2

G = 1 + (R2/R1)

Gain Range

1000

V/V

Gain Error

VOUT ±10 V

0.05

Gain Nonlinearity

VOUT = –10 V to +10 V

G = 1 to 10

≥ 20 kΩ

ppm

G = 100

≥ 20 kΩ

ppm

G = 1000

≥ 20 kΩ

ppm

Gain vs. Temperature

TA = −40°C to +85°C

ppm/°C

OUTPUT

Output Swing

RL = 20 kΩ to ground

TA = +25°C

−VS + 0.15

+VS – 0.15

TA = +85°C

TA = –40°C

RL = 100 kΩ to ground

TA = +25°C

−VS + 0.1

+VS – 0.1

TA = +85°C

TA = –40°C

Short-Circuit Current

POWER SUPPLY

Operating Range

Dual supply operation3

±2.7

±18V

Quiescent Current

TA = +25°C

µA

TA = –40°C

µA

TA = +85°C

100

µA

TEMPERATURE RANGE

Specified

−40

+85

°C

Operational4

−40

+125

°C

The input stage uses pnp transistors, so input bias current always flows out of the part.

For G>1, errors from external resistors R1 and R2 should be added to these specifications, including error from FB pin bias current

Minimum positive supply voltage indicated for V+IN, V-IN, VREF= 0V. With V+IN, V-IN, VREF= -VS, minimum supply is ±1.35V.

See Typical Performance Curves for operation between 85°C and 125°C

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