CA3140 DIP-8 Operational Amplifier IC

The CA3140 is a high-performance operational amplifier (op amp) in a DIP-8 package that combines the advantages of CMOS inputs and bipolar output stages. This BiMOS design delivers exceptional precision with very low input current, wide bandwidth, and fast slew rate—ideal for both professional engineers and hobbyists working with Arduino, Raspberry Pi, and other microcontroller-based projects.

Key Features 🔧

• High voltage gain: up to 100 dB for accurate signal amplification
• Low input current: as low as 10 pA, perfect for high-impedance sensors
• Wide bandwidth: 4.5 MHz for responsive analog front-ends
• High slew rate: 13 V/µs for rapid transient response
• Low supply current: approximately 1.8 mA, suitable for power-conscious designs

Technical Specifications 📐

• Package: DIP-8 through-hole
• Supply voltage (dual rails): ±7.5 V to ±16 V
• Operating temperature: -55°C to +125°C
• Input offset voltage: 5 mV
• Input resistance: 1.5 MΩ
• Output short-circuit duration: Continuous

Typical Applications 📊

• Analog-to-Digital Converter (ADC) front-ends
• Sample-and-hold circuits
• Integrators and active filters
• Photodiode and infrared detector preamplifiers
• Ground-referenced single-supply amplifiers

Prototyping & Compatibility 🧰

The DIP-8 footprint is breadboard-friendly, making the CA3140 easy to integrate into electronics components projects, analog modules, or custom PCBs. It pairs well with Arduino, Raspberry Pi (via external ADCs), and other microcontroller platforms for precision analog signal conditioning and measurement.

Design Notes ✅

• Adhere to the specified voltage rails (±7.5 V to ±16 V) and provide proper decoupling for stability.
• Leverage the low input current when interfacing with high-impedance sources such as sensors and detector diodes.