CA3078E

Overview

The CA3078E is a high-gain monolithic operational amplifier manufactured by Renesas Electronics Corporation. It delivers milliamperes of output current while consuming microwatts of standby power, with operating points that are externally adjustable via an external resistor. The device supports single-supply operation down to 1.5V and allows frequency compensation using one or two external components. It features output short circuit protection and is available in PDIP, SOIC, and metal can packages.

Feature Summary

• Externally adjustable quiescent current for tailored power consumption
• Single-supply capability starting at 1.5V total voltage
• Output short circuit protection included
• Frequency compensation achievable with minimal external components

Applications

• Portable electronics
• Intrusion alarms
• Telemetry systems
• Medical electronics
• Instrumentation

Procurement Notes

Verify the specific manufacturer lineage, as the CA3078 was originally developed by Intersil before its acquisition by Renesas. Confirm package availability (PDIP, SOIC, or Metal Can) matches the design requirements. Check datasheet revision history for any updates to electrical limits or thermal characteristics prior to finalizing procurement specifications.

Selection Notes

Select the CA3078A variant if the application requires a wider supply voltage range up to ±15V compared to the standard CA3078 limit of ±6V. Consider the external bias setting resistor value when designing for specific quiescent currents to optimize the trade-off between slew rate and power dissipation. Ensure compensation networks are sized according to the desired closed-loop gain and transient response overshoot requirements.

Part Context

The CA3078 series belongs to the family of micropower operational amplifiers designed for low-power applications. It provides a balance between high peak output current and ultra-low standby power consumption. The device architecture allows designers to customize performance parameters through external component selection, making it suitable for battery-operated systems where power efficiency is critical.

Replacement Considerations

Public confirmed substitute part numbers include ICL7611, ICL7612, CA5420A, CA3140, and CA3160.