INA118 Instrumentation Amplifer IC Chip

INA118 (Precision, Low-Power Instrumentation Amplifer)

Introduction

The INA118 is a low-power, general-purpose instrumentation amplifier offering excellent accuracy.The versatile, three op amp design and small size make this device an excellent choice for a wide range of applications. Current-feedback input circuitry provides wide bandwidth, even at high gain (70 kHz at G = 100).

A single external resistor sets any gain from 1 to 10000. Internal input protection can withstand up to ±40 V without damage.

The INA118 is laser-trimmed for low offset voltage(50 μV), drift (0.5 μV/°C), and high common-mode rejection (110 dB at G = 1000). The device operates with power supplies as low as ±1 .35V, and quiescent current is only 350 μA,making this device an excellent choice for battery-operated systems.

The INA118 is available in 8-pin plastic DIP and S0-8 surface-mount packages, and specified for the -40°C to +85°C temperature range.

The upgraded INA818 offers a lower input stage offset voltage (35 μV, maximum)，lower input bias current (0.5 nA maximum) and lower noise (8nV/√Hz) at the same quiescent current. 

Feature 

• A newer version of this device is now available:INA818
• Low offset voltage: 50μV, maximum
• Low drift: 0.5 μV/°C, maximum
• Low input bias current: 5 nA, maximum
• High CMR: 110dB, minimum
• Inputs protected to ±40 V
• Wide supply range: ±1.35 to ±18 V
• Low quiescent current: 350 μA
• Packages: 8-Pin plastic DIP, SO-8

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