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MAX5491：Precision-Matched Resistor-Divider in SOT23

Ultra-Precision Voltage-Dividers in a SOT23 Keep Drift to 3ppm/°C

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 discharge (ESD) protection to ensure against real-world ESD events. The MAX5491 is ideal for precision gain-setting 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.

Key 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

MAX5491: Block Diagram Applications/Uses Automated Test Equipment (ATE) Industrial Process Controls Instrumentation Medical Equipment Precision Gain Setting Wireless Base Stations

DataSheet

Parametrics

Quality and Environmental Data

• MAX5491.pdf

Ordering Information