SGM8273-1AXN5G/TR High Voltage High Precision Operational Amplifiers

Product Overview

The SGM8273-1AXN5G/TR from SGMICRO is a high-performance, precision operational amplifier designed for applications that require low offset voltage, low noise, and high precision. This op-amp is suitable for a wide range of applications, including instrumentation, sensors, and medical equipment. On the other hand, the AD8665ARJZ from Analog Devices is also a precision op-amp offering low offset voltage and low noise characteristics. While both products serve similar applications, the SGM8273-1AXN5G/TR stands out with its superior offset voltage, noise performance, and power efficiency.

Input Offset Voltage and Drift

The SGM8273-1AXN5G/TR offers a significantly lower input offset voltage of 25 µV max, compared to the AD8665ARJZ, which has an input offset voltage of 50 µV max. This makes the SGM8273-1AXN5G/TR ideal for high-precision measurement applications where minimizing offset voltage is crucial. Additionally, the SGM8273-1AXN5G/TR demonstrates superior drift performance over temperature, with a typical drift of 0.05 µV/°C compared to the AD8665ARJZ, which has a typical drift of 0.1 µV/°C. This enhanced stability in the SGM8273-1AXN5G/TR ensures better performance in applications where accuracy and long-term reliability are paramount, especially under temperature fluctuations.

Noise Performance

The SGM8273-1AXN5G/TR exhibits lower voltage noise density compared to the AD8665ARJZ. The SGM8273-1AXN5G/TR has a voltage noise density of 1.0 nV/√Hz at 1 kHz, while the AD8665ARJZ shows a voltage noise density of 1.8 nV/√Hz at 1 kHz. This reduced noise density in the SGM8273-1AXN5G/TR translates into improved signal integrity, making it ideal for audio systems, precision sensors, and medical instruments, where low noise is critical for accurate measurements.

Power Consumption

The SGM8273-1AXN5G/TR operates with a lower supply current of 0.3 mA, making it highly power-efficient. In comparison, the AD8665ARJZ requires a typical supply current of 0.6 mA. This lower power consumption in the SGM8273-1AXN5G/TR is advantageous for applications that require battery-powered solutions, such as portable medical devices, wearable electronics, and energy-sensitive systems, where optimizing battery life is crucial.

Temperature Stability and Operating Range

The SGM8273-1AXN5G/TR operates over an extended temperature range of -40°C to +125°C, providing excellent temperature stability. This wide temperature range ensures that the SGM8273-1AXN5G/TR can perform reliably in extreme environmental conditions. In comparison, the AD8665ARJZ also operates within a similar range of -40°C to +125°C, but the SGM8273-1AXN5G/TR maintains better offset voltage stability and temperature drift performance over this range, making it a more robust solution for industrial, automotive, and aerospace applications.

Package and Integration

The SGM8273-1AXN5G/TR comes in a small 5-lead SOT-23 package, which is ideal for space-constrained applications where compact designs are needed. The AD8665ARJZ is available in a 5-lead TO-92 package, which is slightly larger in comparison. The smaller footprint of the SGM8273-1AXN5G/TR allows for easier integration into smaller systems, such as wearable medical devices, portable equipment, and sensor modules, without sacrificing performance.

Cost-Effectiveness

In terms of cost-effectiveness, the SGM8273-1AXN5G/TR is competitively priced while offering superior performance in several critical areas. Its low offset voltage, low noise density, and power efficiency make it a more attractive option for high-volume manufacturing and cost-sensitive projects. When compared to the AD8665ARJZ, the SGM8273-1AXN5G/TR provides an excellent balance of price-to-performance, offering customers high-precision functionality without the added cost typically associated with high-performance op-amps.

Conclusion

The SGM8273-1AXN5G/TR from SGMICRO offers several key advantages over the AD8665ARJZ. With lower input offset voltage, improved noise performance, lower power consumption, and better temperature stability, the SGM8273-1AXN5G/TR is a superior choice for high-precision and low-power applications. Its compact size, combined with cost-effective pricing, makes it a compelling alternative in industries such as medical, automotive, industrial instrumentation, and consumer electronics. Engineers looking for an op-amp with outstanding accuracy, stability, and efficiency should consider the SGM8273-1AXN5G/TR as a reliable solution for their next design.