INA128PAIn StockTexas Instruments
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.
- 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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
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.
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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.
| 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 |
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