MAX5491

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


Application

Industrial Process Control
Instrumentation
Precision Gain Setting
Medical Equipment
Automatic Test Equipment
Base Stations


Pinout




Specifications

Voltage Between P1 and P2....................................................50V
Continuous Current into Any Pin.....................................±1.75mA
Continuous Power Dissipation (TA = +70°C)
3-Pin SOT23 (derate 7.1mW/°C above +70°C)............571.4mW
Operating Temperature Range .........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ...........................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C


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 30k. 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.