INA128PA Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

Name: INA128PA
Brand: Texas Instruments
SKU: INA128PA
Availability: InStock

INA128PA is a precision instrumentation amplifier from Texas Instruments featuring 50μV max offset voltage, 1.3MHz bandwidth, and 120dB CMRR in an 8-pin PDIP package. From $7 in stock, worldwide shipping.

ACTIVEIntegrated CircuitVerified May 2026

Package / Visual Reference

INA128PADual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Dual-In-Line Packages
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: INA128PA Datasheet PDF
Category: Integrated Circuit
Price: From $7.0000(MOQ 10)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of INA128PA?

120dB minimum common-mode rejection ratio for superior noise immunity
Ultra-low input offset voltage of 50μV max for precision measurement
1.3MHz gain-bandwidth product supporting wide signal frequency range
Single-resistor gain setting from 1 to 10,000 for flexible configuration
8-pin PDIP package with through-hole mounting for easy prototyping

What is INA128PA used for?

The INA128PA is widely used in precision data acquisition systems, medical instrumentation, and industrial sensor signal conditioning. Its high CMRR and low offset voltage make it ideal for bridge sensor amplification in weigh scales and pressure transducers. It also suits thermocouple and strain gauge amplification where accurate, low-noise differential signal amplification is critical.

What are the specifications of INA128PA?

Pbfree Code	Yes
YTEOL	15
Amplifier Type	INSTRUMENTATION AMPLIFIER
Average Bias Current-Max (IIB)	0.01 µA
Bandwidth (3dB)-Nom	1.3MHz
Bias Current-Max (IIB) @25C	0.005 µA
Common-mode Reject Ratio-Min	120dB
Input Offset Current-Max (IIO)	0.01 µA
Input Offset Voltage-Max	50 µV
JESD-30 Code	R-PDIP-T8
JESD-609 Code	e4
Neg Supply Voltage Limit-Max	-18 V
Neg Supply Voltage-Nom (Vsup)	-15 V
Non-linearity-Max	0.004%
Number of Functions	1
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP8,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Packing Method	TUBE
Qualification Status	Not Qualified
Slew Rate-Nom	4V/us
Subcategory	Instrumentation Amplifier
Supply Current-Max	0.75mA
Supply Voltage Limit-Max	18V
Supply Voltage-Nom (Vsup)	15V
Surface Mount	NO
Technology	BIPOLAR
Temperature Grade	INDUSTRIAL
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
Voltage Gain-Max	10000
Voltage Gain-Min	1
Voltage Gain-Nom	10
## INA128PA Alternates Showing results	Image
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.33.00.01
Country of Origin	Mexico

Where can I find the INA128PA datasheet?

INA128PA Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for INA128PA?

Compatible alternatives and drop-in replacements for INA128PA:

suggested

suggested

suggested

suggested

suggested

Compare all alternatives & request quotes →

Frequently Asked Questions

What is the gain range of the INA128PA and how is it set?

The INA128PA supports a gain range from 1 to 10,000, set by a single external resistor connected between pins 1 and 8. The gain formula is G = 1 + (50kΩ / RG), allowing precise gain adjustment without matched resistor pairs.

What are the key specifications of the INA128PA instrumentation amplifier?

The INA128PA features a 50μV maximum input offset voltage, 120dB minimum CMRR, 1.3MHz gain-bandwidth product, 5nA maximum bias current, and operates from ±2.25V to ±18V supply voltage. It is housed in an 8-pin PDIP package.

What applications is the INA128PA suitable for?

The INA128PA is ideal for precision instrumentation applications including medical equipment, data acquisition systems, bridge sensor amplification (strain gauges, load cells), thermocouple amplifiers, and industrial process control where high accuracy and noise rejection are required.

What is a suitable replacement or alternative for the INA128PA?

Compatible alternatives to the INA128PA include the INA128U (SOIC-8 package), INA129 (lower power variant), and INA118 (lower cost option). All offer similar precision instrumentation amplifier performance with single-resistor gain setting from Texas Instruments.

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.

Aug 6, 2026

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.

Aug 6, 2026

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.

Aug 4, 2026

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.

Aug 4, 2026

Why Buy from FindMyChip

Authorized Source

Verified supply chain with full traceability & inspection

Competitive Pricing

Factory-direct from China distributors, low MOQ

Fast Shipping

DHL Express 3–5 days · FedEx/UPS 5–7 days worldwide

Quality Guaranteed

30-day replacement for defective parts, no questions asked

About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

View all Texas Instruments parts →

More from Texas Instruments

SN74HC138PWT

Small Outline Packages

Integrated Circuit

MCP6292IDGKT

Small Outline Packages

Integrated Circuit

CD4511BMN

Dual-In-Line Packages

Integrated Circuit

UCC2803DG4

Small Outline Packages

Integrated Circuit

MC33078DRE4

Small Outline Packages

Integrated Circuit

TLV6710DDCT

SOT23 (6-Pin)

Integrated Circuit

AvailabilityIn Stock

Reference Price (USD)

From $7.0000

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
10+	$11.0800	$110.80
23+	$8.9552	$205.97
29+	$8.6567	$251.04
39+	$7.7612	$302.69
500+	$7.4100	$3705.00
1000+	$7.0000	$7000.00

pcs

Unit price: $11.0800 · Total: $110.80

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

Marco Rossi

CTO, AutoDrive Systems, Italy

INA128PA Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of INA128PA?

What is INA128PA used for?

What are the specifications of INA128PA?

Compliance & Regulatory

Where can I find the INA128PA datasheet?

What are equivalent replacements for INA128PA?

Frequently Asked Questions

What is the gain range of the INA128PA and how is it set?

What are the key specifications of the INA128PA instrumentation amplifier?

What applications is the INA128PA suitable for?

What is a suitable replacement or alternative for the INA128PA?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

You May Also Like