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INA111BP

TIINA111BP

Texas Instruments
Instrumentation Amplifier 1 Circuit 8-PDIP
Active36 in stock
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Overview

The INA111BP is a high-speed, FET-input instrumentation amplifier that offers a unique combination of high speed and low input bias current. It features a current-feedback architecture that provides wide bandwidth and a high slew rate of 17V/us, making it ideal for fast data acquisition systems. The 8-PDIP package ensures easy through-hole mounting for prototyping and industrial applications requiring precise signal conditioning.

Why Choose This Part

The FET input stage provides an extremely low input bias current of 2pA, which minimizes errors in high-impedance circuits. With a 2MHz bandwidth and 17V/us slew rate, it significantly outperforms standard instrumentation amplifiers in dynamic response and settling time.

Applications

High-Speed Data Acquisition
Front-end signal conditioning for ADCs in systems requiring rapid sampling of differential signals.
Photodiode Preamplifiers
Utilizing the ultra-low 2pA input bias current to amplify small currents from optical sensors.
Medical Instrumentation
Conditioning of biopotential signals where high input impedance and fast response are necessary.
Industrial Sensor Interface
Precision amplification of bridge sensors or strain gauges in noisy industrial environments.

Key Specifications

Slew Rate 17V/us
Mounting Type Through Hole
-3db Bandwidth 2 MHz
Amplifier Type Instrumentation
Package / Case 8-DIP (0.300", 7.62mm)
Current - Supply 3.3mA
Number of Circuits 1
Current - Input Bias 2 pA
Operating Temperature -40degC ~ 85degC
Voltage - Input Offset 100 uV
Supplier Device Package 8-PDIP
Current - Output / Channel 30 mA
Voltage - Supply Span (Max) 36 V
Voltage - Supply Span (Min) 12 V

Getting Started

When designing with the INA111BP, ensure a 0.1uF ceramic bypass capacitor is placed close to the supply pins (6V to 18V range). Since it is a through-hole 8-PDIP component, it can be directly used on standard breadboards or prototyping boards for rapid circuit validation.

INA111 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Voltage - Input Offset Stock
INA111BP (this part) DIP-8 100 uV 36
INA111AU SOIC-16 200 uV 935
INA111AP DIP-8 200 uV 219

Also Consider

INA128P TITexas Instruments - A precision alternative with lower power consumption and higher accuracy if the 2MHz bandwidth of the INA111 is not required.
AD8221ARZ Analog Devices - An alternative with excellent CMRR over frequency, though it is primarily available in surface-mount packages.

Categories

Analog ICs