onsemi

MC33171DG

MC33171DG Description

The MC33171DG from onsemi is a general-purpose operational amplifier (op-amp) housed in an 8-SOIC surface-mount package. Designed for precision and efficiency, this single-circuit op-amp operates over a wide supply voltage range of 3V to 44V, making it versatile for both low-voltage and high-voltage applications. With a low supply current of 220µA, it is optimized for power-sensitive designs while delivering a slew rate of 2.1V/µs and a gain bandwidth product of 1.8 MHz, ensuring stable performance in dynamic signal processing tasks.

MC33171DG Features

• Wide Supply Range (3V–44V): Supports diverse power configurations, from battery-operated devices to industrial systems.
• Low Input Bias Current (20 nA): Minimizes errors in high-impedance circuits, ideal for sensor interfaces.
• High Output Current (27 mA): Capable of driving heavier loads compared to similar op-amps.
• Low Offset Voltage (2 mV): Enhances accuracy in precision applications like instrumentation.
• Low Power Consumption (220µA): Extends battery life in portable electronics.
• Surface-Mount Package (8-SOIC): Compact and suitable for automated PCB assembly.
• Obsolete Status: While no longer in production, it remains a reliable choice for legacy designs.

MC33171DG Applications

The MC33171DG excels in:

• Signal Conditioning: Filtering and amplification in sensor interfaces (e.g., thermocouples, strain gauges).
• Power Management: Voltage regulation and monitoring in automotive/industrial systems.
• Portable Electronics: Low-power audio amplifiers and signal processing in handheld devices.
• Test & Measurement Equipment: Precision signal chains due to low noise and offset.
• Legacy System Maintenance: Replacing older op-amps in industrial controls without redesigns.

Conclusion of MC33171DG

The MC33171DG balances wide voltage range, low power, and robust performance, making it a versatile choice for precision analog designs. Though obsolete, its high output drive, low bias current, and stability ensure continued relevance in legacy and niche applications. Engineers favor it for cost-effective, low-risk solutions where modern alternatives may require redesigns. For systems demanding reliable amplification with minimal power overhead, this op-amp remains a pragmatic selection.