MAX5491 datasheet(3/7 Pages) MAXIM

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Precision-Matched Resistor-Divider in SOT23

_______________________________________________________________________________________

NORMALIZED RESISTOR-RATIO DRIFT

vs. TEMPERATURE

TEMPERATURE (

°C)

-25

-300

-200

-100

100

200

300

400

-400

-50

100

VP1-P2 = 10V

RATIO = 1:1

NORMALIZED RESISTOR-RATIO DRIFT

vs. TEMPERATURE

TEMPERATURE (

°C)

-25

-300

-200

-100

100

200

300

400

-400

-50

100

VP1-P2 = 10V

RATIO = 5:1

Typical Operating Characteristics

(VP1-P2 = 10V, TA = +25°C, unless otherwise noted.)

Pin Description

NAME

FUNCTION

1P1

R1 Connection Terminal

2P2

R2 Connection Terminal

Midpoint Between R1 and R2 Connection Terminals

Detailed Description

As shown in the Block Diagram, the MAX5491 consists

of two precision, low-ratio-drift resistors with an end-to-

end resistance of 30k

Ω (R1 + R2). P3 is the center tap

of the divider. The maximum working voltage of the

MAX5491 is 50V. This device offers a wide range of

resistance ratios (R1/R2) from 1:1 to 30:1 and is ideally

suited for precision operational amplifier gain/attenua-

tion control. The MAX5491 features a ±2kV ESD protec-

tion that enhances system robustness. A maximum

initial ratio accuracy of 0.035% and a low 2ppm/

°C ratio

drift enhance system accuracy.

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