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INA114AP

TIINA114AP

Texas Instruments
Instrumentation Amplifier 1 Circuit 8-PDIP
Active1,011 in stock
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Overview

The INA114AP is a high-accuracy, low-power instrumentation amplifier designed for precise signal amplification. It uses a classic three-op-amp design to provide excellent common-mode rejection and very low input offset voltage of 25 uV. Packaged in a through-hole 8-PDIP, it is easily integrated into both professional industrial instrumentation and prototyping environments.

Why Choose This Part

The INA114AP offers exceptional precision with a low offset voltage of 25 uV and very low drift. Its internal input protection handles up to +/-40V without damage, making it robust against signal overloads. The 8-PDIP through-hole package is particularly advantageous for engineers building rugged prototypes or maintaining legacy industrial hardware.

Applications

Bridge Amplifiers
Ideal for amplifying small differential signals from wheatstone bridge sensors such as load cells, strain gauges, and pressure transducers.
Medical Instrumentation
Used in surgical equipment and patient monitoring devices where high precision and low input bias current (500 pA) are required.
Industrial Process Control
Suitable for thermocouple amplification and RTD temperature sensing in trackside signaling and industrial relays.
Data Acquisition Systems
Serves as a high-performance front-end for ADCs in systems requiring 1 MHz bandwidth and over-voltage protection up to 40V.

Key Specifications

Slew Rate 0.6V/us
Mounting Type Through Hole
-3db Bandwidth 1 MHz
Amplifier Type Instrumentation
Package / Case 8-DIP (0.300", 7.62mm)
Current - Supply 2.2mA
Number of Circuits 1
Current - Input Bias 500 pA
Operating Temperature -40degC ~ 85degC
Voltage - Input Offset 25 uV
Supplier Device Package 8-PDIP
Current - Output / Channel 20 mA
Voltage - Supply Span (Max) 36 V
Voltage - Supply Span (Min) 4.5 V

Getting Started

For initial evaluation, the INA114AP can be used directly on a standard breadboard due to its 8-PDIP package. A single external resistor connected between pins 1 and 8 sets the gain from 1 to 10,000. Ensure high-quality ceramic bypass capacitors are placed close to the supply pins (up to +/-18V) to maintain signal integrity and stability.

Also Consider

INA128PA TITexas Instruments - A similar high-accuracy instrumentation amplifier that offers a slightly different gain equation and power profile.
AD620ANZ Analog Devices - The industry-standard alternative in an 8-PDIP package with comparable low-power and high-precision specifications.

Categories

Analog ICs > Instrumentation Amplifiers Analog ICs Industrial & Automation > Industrial Sensors & Instrumentation