CA3140 BiMOS Operational Amplifier [Original]

CA3140 BiMOS Operational Amplifier IC – High Performance Op-Amp

The CA3140 BiMOS Operational Amplifier is a versatile integrated circuit combining the benefits of high voltage PMOS and bipolar transistors on a single monolithic chip. Its gate-protected MOSFET input stage ensures very high input impedance and exceptionally low input current, making it ideal for sensitive applications. Operating across a wide supply voltage range of 4V to 36V, it supports both single and dual supply configurations. This op-amp is internally phase compensated for stable unity gain follower operation and offers terminals for input offset voltage nulling. With its PMOS input, it provides a common mode input voltage capability down to 0.5V below the negative supply, crucial for single supply designs. The robust bipolar output stage includes built-in protection against short circuits, enhancing reliability. It serves as a direct, high-performance replacement for the industry-standard 741 op-amp in most circuits.

Specifications:

• Input Stage: MOSFET (PMOS)
• Technology: BiMOS (PMOS/Bipolar)
• Supply Voltage Range: 4V to 36V (Single or Dual)
• Input Impedance: Very High
• Input Current: Very Low
• Common Mode Input Voltage Range: Down to 0.5V below negative supply
• Output Stage: Bipolar with Short Circuit Protection
• Compensation: Internally Phase Compensated
• Replacement For: Industry Type 741

Key features and benefits:

• Advanced BiMOS technology combining PMOS and bipolar transistors
• Gate-protected MOSFET input stage for very high input impedance
• Extremely low input current for precision applications
• Wide common mode input voltage range, extending 0.5V below negative supply
• Operates on a broad supply voltage from 4V to 36V (single or dual)
• Internally phase compensated for stable unity gain follower operation
• Directly replaces industry-standard 741 op-amps in most applications
• Bipolar output stage with built-in short circuit protection

Applications:

• High-impedance sensor interfaces and signal conditioning
• Active filters and precision amplifiers
• Voltage followers and buffers in single-supply systems
• General-purpose operational amplifier circuits
• Audio preamplifiers and low-current measurement
• Upgrades or replacements for 741-based designs

Package Includes:

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