MAX5491UA07538-T 查看數據表（PDF） - Maxim Integrated

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MAX5491UA07538-T

Precision-Matched Resistor-Divider in SOT23

Maxim Integrated 

19-3009; Rev 3; 12/04

Precision-Matched Resistor-Divider in SOT23

General Description

The MAX5491 precision resistor-divider consists of two

accurately matched resistors with access to the ends

and center of the divider. This device offers excellent

resistance matching of 0.035% (A grade), 0.05% (B

grade), and 0.1% (C grade). The MAX5491 includes an

extremely low resistance-ratio temperature drift of

2ppm/°C over -40°C to +85°C, and has an end-to-end

resistance of 30kΩ. Resistance ratios from 1:1 to 30:1 are

available. Ten standard ratios are available (see Table

1), and custom ratios are also available upon request. To

enhance device and system robustness, the MAX5491

also features ±2kV Human Body Model electrostatic dis-

charge (ESD) protection to ensure against real-world

ESD events. The MAX5491 is ideal for precision gain-set-

ting applications where tight resistance matching and

low temperature drift are necessary.

The MAX5491 is available in a space-saving 3-pin

SOT23 package, and is guaranteed over the extended

-40°C to +85°C temperature range.

Applications

Industrial Process Control

Instrumentation

Precision Gain Setting

Medical Equipment

Automatic Test Equipment

Base Stations

Features

♦ Resistance Ratios from 1:1 to 30:1

♦ Custom Ratios Available Upon Request

♦ ±2kV Human Body Model ESD Protection

♦ Tight Initial Ratio Accuracy

0.035% (MAX5491A)

0.05% (MAX5491B)

0.1% (MAX5491C)

♦ Low 2ppm/°C Resistor-Ratio-Drift

♦ Up to 50V Operating Voltage Across Sum of R1

and R2

♦ Tiny 3-Pin SOT23 Package

Ordering Information*

PA R T

T EM P

RANGE

RA TIO

PIN -

PA C K A G E

AC CUR ACY

(%)

MAX5491_A_ _ _ _ _ -T -40°C to +85°C 3 SOT23-3

MAX5491_B_ _ _ _ _ -T -40°C to +85°C 3 SOT23-3

MAX5491_C_ _ _ _ _ -T -40°C to +85°C 3 SOT23-3

0.035

0.05

0.1

*See the How to Order section for more details.

Block Diagram

Pin Configuration

P1

MAX5491

R1

P3

R2

P2

TOP VIEW

P1 1

P2 2

MAX5491

3 P3

SOT23

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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