IC OPAMP GP 1 CIRCUIT TO99-8

OPA128SM – 1MHz General Purpose Op Amp – Texas Instruments Difet® Series

The OPA128SM from Texas Instruments is a precision general-purpose operational amplifier engineered for applications demanding ultra-low input bias current and high accuracy. Featuring Texas Instruments’ proprietary Difet® technology, this through-hole IC delivers exceptional signal integrity in critical measurement systems. PCX ensures authentic OPA128SM units with same-day shipping and dedicated technical support.

Key Features

• Ultra-Low Input Bias Current: 0.075 pA minimizes error in high-impedance circuits
• Wide Voltage Range: Operates from ±5V to ±18V (10V–36V span)
• Low Input Offset Voltage: 140 µV ensures precision signal conditioning
• Robust Temperature Range: -55°C to 125°C for harsh environments
• High Output Drive: 10mA output current capability

Technical Details

Housed in a TO-99-8 metal can package, this single-channel op amp features a gain bandwidth product of 1MHz and slew rate of 3V/µs. Its 900µA supply current enables efficient operation, while through-hole mounting simplifies prototyping and industrial assembly. The Difet® construction provides superior isolation and low noise performance.

Typical Applications

• Medical instrumentation and photodiode preamplifiers
• High-impedance sensor interfaces (pH meters, electret microphones)
• Precision integrators and sample-and-hold circuits
• Test equipment requiring sub-picoamp current measurement
• Aerospace and defense control systems

About Texas Instruments

Texas Instruments (TI) is a global semiconductor leader renowned for advancing analog and embedded processing technologies. With over 90 years of innovation, TI sets industry standards for precision components, particularly in operational amplifiers and data converters.

TI’s Difet® series exemplifies their commitment to solving complex engineering challenges through cutting-edge manufacturing processes. Their components undergo rigorous quality validation, making them the preferred choice for mission-critical designs where reliability and performance are paramount.

About Operational Amplifiers

Operational amplifiers (op amps) are fundamental building blocks in analog electronics, amplifying voltage differences between inputs with high gain. They enable critical functions like filtering, buffering, and mathematical operations in signal chains across virtually all electronic sectors.

Precision op amps like the OPA128SM are indispensable in applications requiring minimal signal distortion and exceptional stability. Their ability to handle microvolt-level signals with near-zero current draw makes them ideal for scientific instruments, medical devices, and high-accuracy industrial controls where error margins are extremely tight.

Packaging Options

Available in protective Tube packaging for secure handling during prototyping or small-batch production. Contact PCX for bulk requirements.

FAQs

Q: What makes the OPA128SM suitable for photodiode amplification?
A: Its 0.075 pA input bias current prevents signal loading in high-impedance photodiode circuits, preserving measurement accuracy.

Q: Is this part RoHS compliant?
A: The OPA128SM was designed pre-RoHS; contact PCX for compliance documentation specific to your lot.

Q: Can I use this op amp in cryogenic applications?
A: Yes, its -55°C operating temperature supports low-temperature environments like scientific sensors.

Q: How does Difet® technology improve performance?
A: TI’s dielectric isolation reduces leakage currents and parasitic effects, enhancing stability in precision DC circuits.

Q: Is the datasheet available?
A: Yes, download the OPA128SM datasheet from PCX.

Q: Why choose an obsolete component?
A: Many legacy systems require exact replacements; PCX specializes in sourcing discontinued TI parts with verified authenticity.

Image shown is representational only. Refer to datasheet for exact dimensions.

Ready to Integrate Precision Performance?

Ensure design continuity with genuine Texas Instruments OPA128SM op amps. PCX provides component validation, lightning-fast logistics, and expert support. Order today for reliable next-day delivery!