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 discharge (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.

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