مدار مجتمع (آی سی) آی سی‌کاربرد ویژه

Product Attributes

Introduction

The MAX5426 is a precision resistor network optimized for use with programmable instrumentation amplifiers. The MAX5426 operates from dual ±5V to ±15V supplies and consumes less than 40μA of supply current. Designed to be used in the traditional three op amp instrumentation amplifier topology, this device provides noninverting gains of 1, 2, 4, and 8 that are accurate to 0.025% (A-grade), 0.09% (B-grade), or 0.5% (C-grade) over the extended temperature range (-40℃ to +85℃).

The MAX5426 is a precision resistor network with low temperature drift and high accuracy that performs the same function as a precision resistor array and CMOS switches. Operationally, this device consists of fixed resistors and digitally controlled variable resistors that provide differential gains of 1, 2, 4, and 8. The MAX5426 provides gains accurate to 0.025% (MAX5426A), 0.09% (MAX5426B) or 0.5% (MAX5426C).

The MAX5426 is ideal for programmable instrumentation amplifiers. An offset pin is available to apply a DC offset voltage to the output of the differential amplifier. Pin CM is the common-mode input voltage and can be buffered and connected to the common-mode input of the instrumentation amplifier (usually the shield of the input cable to reduce the effects of cable capacitance and leakage).

Features

• Differential Gains: A = 1, 2, 4, 8
• Gain Accurate to 0.025%, 0.09%, or 0.5%
• Dual Supply ±5V to ±15V Operation
• Low 36μA Supply Current
• Simple CMOS/TTL Logic Compatible 2-Wire Parallel Interface
• Space-Saving 14-Pin TSSOP Package (6.4mm × 5mm)
• OFFSET Pin Available to Offset the Output of the Differential Amplifier

Applications

• General-Purpose Programmable Instrumentation Amplifiers
• Gain Control in RF Power Amplifiers
• Precision Dual Attenuator