SGM8051XS/TR 250MHz, CMOS Operational Amplifiers

Product Comparison: SGMICRO SGM8051XS/TR vs. AD8051ARZ and AD8051ARZ-REEL7

1. Power Efficiency
The SGM8051XS/TR offers excellent power efficiency, operating at a typical supply current of only 1.2mA, whereas both AD8051ARZ and AD8051ARZ-REEL7 typically consume around 4.8mA. This represents a nearly 75% reduction in power consumption, which is especially beneficial for power-sensitive designs such as portable or battery-operated systems.

2. Supply Voltage Range and System Integration
SGM8051XS/TR supports a wide supply voltage range of 2.5V to 5.5V, offering excellent compatibility with modern low-voltage digital systems and power rails. In contrast, the AD8051ARZ series operates from 3V to 6V, making the SGM8051XS/TR more suitable for systems utilizing 2.5V or 3.3V power domains without requiring additional regulation or interface components.

3. High-Speed Performance
Despite its lower power consumption, the SGM8051XS/TR maintains a high -3dB bandwidth of 300MHz and a slew rate of 1600V/μs, equivalent to that of the AD8051ARZ and its reel-packaged variant. This ensures uncompromised high-speed signal amplification performance for video, RF front-ends, and fast ADC drivers.

4. Input and Output Swing Characteristics
The SGM8051XS/TR provides rail-to-rail output, a significant advantage in maximizing dynamic range in single-supply systems. AD8051ARZ, while high-speed, does not offer true rail-to-rail output, which can limit performance in low-voltage environments. This gives SGMICRO's solution a clear edge in applications where output swing range directly impacts signal resolution and linearity.

5. Package Size and Thermal Efficiency
SGM8051XS/TR is available in a compact SOIC-8 (compatible with AD8051ARZ/REEL7) as well as other small-outline packages, ensuring footprint compatibility for drop-in replacement or compact PCB layouts. Thanks to its lower quiescent current, SGM8051XS/TR also exhibits reduced self-heating, leading to better thermal performance and long-term reliability in dense layouts.

6. Reliability and Qualification
SGMICRO's SGM8051XS/TR is fully qualified over an extended temperature range of -40°C to +125°C, ensuring robust performance in industrial and automotive environments. This aligns with or exceeds the performance envelope of AD8051ARZ and AD8051ARZ-REEL7, offering customers a reliable alternative with confidence in harsh application scenarios.

7. Cost, Availability, and Local Support
SGM8051XS/TR delivers cost-effective performance with reduced BOM cost and better supply chain assurance compared to ADI's AD8051ARZ series, which may suffer from longer lead times and higher pricing due to global sourcing constraints. SGMICRO offers stable lead times, local technical support, and mass production capacity, providing clear advantages for OEMs and ODMs focused on production scale and cost control.

Conclusion
The SGM8051XS/TR stands out as a high-speed, low-power, and cost-efficient operational amplifier that matches or exceeds the performance of AD8051ARZ and AD8051ARZ-REEL7 in key parameters. Its broad voltage support, rail-to-rail output, and ultra-low power consumption make it a compelling choice for modern high-speed analog designs requiring both performance and efficiency.