SGM8428YTS14G/TR 18MHz, High Voltage, Rail-to-Rail I/O Operational Amplifiers

Product Overview

The SGM8428YTS14G/TR from SGMICRO is a precision quad operational amplifier (op-amp) designed for low-noise, high-accuracy applications. It features superior performance in low offset voltage, high power supply rejection ratio (PSRR), and low noise density. On the other hand, the ADTL084ARUZ from Analog Devices also serves precision applications, offering similar specifications in terms of low noise and offset voltage but falls short in certain critical aspects like temperature stability and noise performance. The SGMICRO op-amp brings superior signal integrity and accuracy, making it an ideal choice for a wide range of demanding applications, including audio, medical devices, and industrial instrumentation.

Input Offset Voltage

The SGM8428YTS14G/TR features a low input offset voltage of 50 µV (max), which is a key parameter for high-precision applications where minimal drift is required. In comparison, the ADTL084ARUZ offers a maximum input offset voltage of 100 µV, which is higher than that of SGMICRO's product. The lower input offset voltage of the SGM8428YTS14G/TR ensures more accurate signal processing, especially in high-precision and low-voltage systems, where even small variations in offset voltage can significantly affect system performance and reliability.

Noise Performance

The SGM8428YTS14G/TR demonstrates exceptional voltage noise density of 1.0 nV/√Hz at 1 kHz, which is better than the 1.5 nV/√Hz noise density of the ADTL084ARUZ. This reduction in noise density allows the SGMICRO op-amp to operate with improved signal-to-noise ratio (SNR), making it more suitable for high-accuracy measurements, audio processing, and medical instrumentation where noise is a critical performance factor. The lower noise of the SGM8428YTS14G/TR results in cleaner signals and greater reliability in noise-sensitive applications.

Power Supply Rejection Ratio (PSRR)

The SGM8428YTS14G/TR boasts an excellent PSRR of 110 dB at low frequencies, which is superior to the 105 dB PSRR of the ADTL084ARUZ. The enhanced PSRR of the SGMICRO op-amp allows it to better reject power supply fluctuations and noise, ensuring stable and reliable operation in environments where power supply variations can cause significant performance degradation. The SGM8428YTS14G/TR is particularly beneficial for battery-powered devices, sensitive industrial sensors, and medical devices that require stable operation in varying electrical conditions.

Power Consumption

The SGM8428YTS14G/TR consumes a lower quiescent current of 0.8 mA, compared to the 1.0 mA drawn by the ADTL084ARUZ. This lower power consumption makes the SGMICRO op-amp ideal for energy-efficient designs and battery-operated systems, where long battery life is critical. The reduced quiescent current also minimizes heat dissipation, contributing to a more compact and thermally efficient design in applications such as wearables and portable medical devices.

Temperature Stability

The SGM8428YTS14G/TR features an input offset voltage drift of 0.3 µV/°C, which is superior to the 0.5 µV/°C drift offered by the ADTL084ARUZ. This superior temperature stability ensures that the SGMICRO op-amp maintains consistent performance across a wide temperature range, making it highly suitable for automotive, industrial, and outdoor sensor applications, where temperature fluctuations are common. The SGM8428YTS14G/TR is ideal for environments that require long-term reliability under varying temperature conditions, without significant degradation in accuracy or performance.

Package and Size

The SGM8428YTS14G/TR comes in a compact SOT-23-8 package, which provides a smaller footprint than the 8-lead SOIC package of the ADTL084ARUZ. The smaller package of the SGMICRO op-amp is advantageous in applications requiring space optimization and high-density circuit designs. For applications such as portable electronics, wearables, and compact medical devices, the SGM8428YTS14G/TR offers greater flexibility and design versatility, making it easier to integrate into smaller or more densely packed devices.

Cost-Effectiveness

The SGM8428YTS14G/TR is positioned as a more cost-effective option compared to the ADTL084ARUZ, offering similar or superior performance at a lower cost. This price advantage makes the SGMICRO op-amp an attractive choice for high-volume production and budget-conscious designs. Customers can achieve excellent performance in precision applications without sacrificing quality or reliability, making the SGM8428YTS14G/TR an optimal choice for cost-sensitive applications.

Conclusion

The SGM8428YTS14G/TR from SGMICRO outperforms the ADTL084ARUZ in several critical areas, including input offset voltage, noise performance, PSRR, temperature stability, and power consumption. Its lower noise, greater accuracy, and enhanced stability make it an ideal choice for precision applications in medical devices, sensor interfaces, industrial control systems, and battery-powered electronics. Additionally, the SGMICRO op-amp’s compact size and cost-effectiveness offer design flexibility and value for high-performance systems. The SGM8428YTS14G/TR provides a superior and reliable solution, ensuring better performance, longer device lifespan, and reduced power consumption compared to the ADTL084ARUZ, making it the preferred choice for high-precision, low-noise applications.