on October 31th 12,452

INA128 Amplifier: Equivalent, Specifications, and Datasheet

This article explores the INA128 instrumentation amplifier, a component recognized for its high precision, low power consumption, and adaptability across a spectrum of electronic applications. Its robust design ensures reliable performance under varying environmental conditions for scenarios where signal integrity is needed. We delve into the INA128's architecture, capabilities, and practical applications to demonstrate its versatility in enhancing circuit efficiency and system reliability.

Catalog

What is the INA128?

The INA128 stands out as an instrumentation amplifier that marries efficiency with accuracy, all while keeping power consumption low, a cohesive blend of practicality and technological prowess. Employing a versatile three-amplifier configuration, it readily adapts to a multitude of applications, offering substantial flexibility. Its solid design allows seamless incorporation into complex electronic systems, reinforcing its persistent applicability in contemporary technology. The amplifier's sophisticated current-feedback input design ensures it maintains a broad bandwidth, even at high gain levels. You can adjust the gain easily by using a single external resistor, allowing for settings ranging from 1 to 10,000, aligning with established industry-standard gain formulas. This capacity for gain alteration accommodates diverse needs for precision and varied operational environments, enhancing reliability and performance, particularly in scenarios where precision is non-negotiable.

Ingeniously calibrated, the INA128 is designed to reduce offset voltage and drift, optimizing its capability for rejecting common-mode signals. This refinement in calibration for achieving high measurement accuracy, offering stable and repeatable outcomes that mirror the detailed attention required in operations, where even small discrepancies can make a difference. Operating efficiently at supply voltages as low as ±2.25V, and handling input voltages up to ±40V, the amplifier is ideal for battery-operated systems and situations where consistent performance under fluctuating power conditions is needed. Encased in compact 8-pin packages, the INA128 delivers reliable performance within a temperature range of -40°C to +85°C. Additionally, it is available in a dual configuration with the INA2128, accommodating a wider spectrum of system architectures and application demands.

INA128 Pin Configuration

INA128 Symbol, Footprint, and CAD Model

INA128 Technical Specifications

Technical specifications, characteristics, and parameters of the INA128, along with components comparable to the Texas Instruments INA128UAE4.

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 3 days ago)
Contact Plating	Gold
Package / Case	8-SOIC (0.154, 3.90mm Width)
Number of Pins	8
Operating Temperature	-40°C~125°C
JESD-609 Code	e4
Part Status	Active
ECCN Code	EAR99
Terminal Position	DUAL
Peak Reflow Temperature (Cel)	260
Supply Voltage	15V
Pin Count	8
Operating Supply Current	700µA
Factory Lead Time	6 Weeks
Mounting Type	Surface Mount
Surface Mount	YES
Weight	75.891673mg
Packaging	Tube
Pbfree Code	yes
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Resistance	100GOhm
Terminal Form	GULL WING
Number of Functions	1
Base Part Number	INA128
Number of Circuits	1
Nominal Supply Current	750µA
Quiescent Current	700µA
Amplifier Type	Instrumentation
Current - Input Bias	2nA
Output Current per Channel	15mA
Bandwidth	1.3MHz
Neg Supply Voltage-Nom (Vsup)	-15V
Average Bias Current-Max (IIB)	0.005µA
-3db Bandwidth	1.3MHz
Input Voltage Noise Density	8nV/sqrt Hz
Voltage Gain-Nom	10
Height	1.75mm
Width	3.91mm
REACH SVHC	No SVHC
RoHS Status	ROHS3 Compliant
Slew Rate	4V/µs
Common Mode Rejection Ratio	110 dB
Voltage - Supply, Single/Dual (±)	4.5V36V, ±2.25V18V
Input Offset Voltage (Vos)	125µV
Gain Bandwidth Product	1.3MHz
Voltage Gain	80dB
Voltage - Input Offset	25µV
Dual Supply Voltage	15V
Number of Amplifiers	3
Non-linearity-Max	0.00%
Length	4.9mm
Thickness	1.58mm
Radiation Hardening	No
Lead Free	Lead Free

Functional Block Diagram of INA128

Applications of INA128

Achieving Precision with Bridge Amplifiers

Bridge amplifiers featuring INA128 are central in scenarios demanding meticulous measurement. Their ability to boost sensitivity and accuracy is good for devices such as weight scales, strain gauges, and pressure sensors. The harmoniously balanced resistor networks of INA128 help reduce errors, delivering exceptional linearity in outputs for practical problem solving.

Thermocouple Amplifiers

By utilizing INA128, thermocouple amplifiers excel in maintaining accurate temperature readings, aided by its strong common-mode rejection capabilities. This ensures resistance to environmental disturbances, supporting stability and consistency in industrial settings where precise temperature monitoring is of great benefit.

RTD Sensor Amplifiers

In RTD sensor amplification, INA128 delivers the precision needed to facilitate accurate temperature assessments. Its low drift and gain are advantageous in sectors such as laboratory testing and aerospace, where precision is invaluable.

Influences on Medical Instrumentation

Within medical instrumentation, INA128 plays a role in the design of devices needing thorough physiological signal amplification. Devices like ECGs and EEGs rely on the amplifier's precision and low noise qualities to ensure the clarity of biological signals, thereby improving diagnostic reliability.

Integrating into Data Acquisition Systems

Incorporating INA128 into data acquisition systems elevates performance through precise data gathering. It adeptly converts small differential voltages to levels compatible with ADCs, thereby upholding data integrity and system dependability in areas like research labs and industrial surveillance.

INA128 Equivalent and Alternatives

Model Number	Manufacturer	Description
LT1101ISW	Analog Devices Inc	Instrumentation Amplifier, 1 Func, 950uV Offset-Max, 0.037MHz Band Width, PDSO16
LT1101ISW#PBF	Analog Devices Inc	Precision, Micropower, Single Supply Instrumentation Amplifier (Fixed Gain = 10 or 100)
AD624BDZ	Rochester Electronics LLC	INSTRUMENTATION AMPLIFIER, 75 uV OFFSET-MAX, 1 MHz BAND WIDTH, CDIP16, CERAMIC, DIP-16
AD524BDZ	Analog Devices Inc	Precision Instrumentation Amplifier
AD524ARZ-16-REEL7	Analog Devices Inc	Precision Instrumentation Amplifier
INA110BG-BI	Texas Instruments	INSTRUMENTATION AMPLIFIER, 3250uV OFFSET-MAX, 2.5MHz BAND WIDTH, CDIP16
INA114BUE4	Texas Instruments	INSTRUMENTATION AMPLIFIER, 50uV OFFSET-MAX, 1MHz BAND WIDTH, PDSO16, GREEN, SOIC-16
PGA205BPG4	Texas Instruments	Programmable Gain Instrumentation Amplifier 16-PDIP -40 to 85
INA101KU/1KE4	Texas Instruments	INSTRUMENTATION AMPLIFIER, 0.3MHz BAND WIDTH, PDSO16, ROHS COMPLIANT, SOIC-16
INA128UA/2K5	Burr-Brown Corp	Instrumentation Amplifier, 1 Func, 1125uV Offset-Max, 1.3MHz Band Width, PDSO8, GREEN, PLASTIC, MS-012AA, SOIC-8
INA128UAE4	Texas Instruments	Instrumentation Amplifier, 8-SOIC (0.154, 3.90mm Width), 1 Func, 4V/μs, 1.3MHz, 125 μV, 110 dB, 15 V
INA129UA/2K5	Texas Instruments	Instrumentation Amplifier, 8-SOIC (0.154, 3.90mm Width), 1 Func, 4V/μs, 1.3MHz, 25 μV, 110 dB, 15 V
INA128UA	Texas Instruments	Instrumentation Amplifier, 8-SOIC (0.154, 3.90mm Width), 1 Func, 4V/μs, 1.3MHz, 25 μV, 110 dB, 15 V
INA129UA	Texas Instruments	Instrumentation Amplifier, 8-SOIC (0.154, 3.90mm Width), 1 Func, 4V/μs, 1.3MHz, 125 μV, 110 dB, 15 V

INA128 Packaging

INA128 Manufacturer Information

Texas Instruments (TI) stands at the forefront of the semiconductor world, continuously expanding the horizons of technology with their broad spectrum of offerings. As a key source of analog and embedded processing components, TI's inventive spirit has ripple effects across various domains, reshaping everything from electronics to industrial systems. Their quest for proficiency is deeply embedded not only in their current products but also in their strategic pursuit of innovative breakthroughs. A study of industry patterns indicates that enduringly relevant companies are those that not only innovate internally but also observe and respond to external shifts. Texas Instruments embodies this strategy, capitalizing on their vast market insight to preempt potential challenges. This forward-thinking approach ensures enduring growth and foremost standing in a continuously evolving sector.

Datasheet PDF

INA129UA/2K Datasheets:

INA12x 03/Aug/2022.pdf

INA128UA Datasheets:

Design 25/Feb/2022.pdf

INA12x 03/Aug/2022.pdf

INA129UA Datasheets:

INA12x 03/Aug/2022.pdf