On October 30, 2023, the 10th China IoT Conference and the 8th China IoT Innovation Awards Ceremony, jointly hosted by the world-renowned electronic technology media Elecfans and the electronica China South China Electronics Exhibition, successfully concluded in Shenzhen. Gutai Micro's broadband, high-precision, low-mismatch amplifier GAP328X won the "IoT Annual Product Award".

The GAP328X is a high-precision, wide-bandwidth, rail-to-rail input/output amplifier that utilizes an auto-zero architecture to eliminate input voltage drift and achieve a bandwidth of nearly 20MHz, providing a significantly higher cost-performance ratio compared to similar products. With a low-frequency open-loop gain of up to 130dB, the GAP328X maintains a stable frequency response regardless of changes in closed-loop gain. Additionally, its input noise voltage is only 35nV/√Hz, and input noise current is just 1.5fA/√Hz, ensuring signal clarity and accuracy. The GAP328X can operate under either single or dual power supplies, with an input common-mode range that includes both negative and positive rails, and an output swing that reaches between the negative and positive rails. Both input and output can reach any level between the power rails without the need for additional bias circuits.

Design Features:

1. Mismatch Elimination Architecture: The novel auto-zero architecture is a technical solution that utilizes switched capacitors and multi-phase clocks for automatic calibration, effectively eliminating input voltage drift and improving amplifier accuracy and stability. This technology also reduces amplifier noise.

2. High Speed: High speed allows the amplifier to complete signal amplification and output within a short period without delay. High speed enhances the amplifier's response speed and efficiency. The GAP328X boasts a high slew rate and employs multi-phase overlapping clocks, eliminating interference during clock interaction, thereby increasing signal processing speed and efficiency.

3. Wide Bandwidth: Wide bandwidth enables the amplifier to maintain good amplification effects in high-frequency ranges without sacrificing gain or noise. Wide bandwidth improves the amplifier's signal processing capabilities and speed. With ultra-low mismatch and low noise, the GAP328X achieves a unit gain bandwidth of nearly 20MHz, offering a significantly higher cost-performance ratio than similar products.

Application Advantages:

1. High Precision: The GAP328X can adjust gain externally in a closed loop to meet different amplification needs, making it ideal for applications requiring high precision such as temperature sensors, pressure sensors, weighing sensors, and strain gauge amplifiers.

2. Wide Bandwidth: The GAP328X employs a novel auto-zero architecture to eliminate input offset voltage and drift, achieving a bandwidth of nearly 20MHz, significantly higher than similar products. This feature makes the GAP328X suitable for applications requiring wide bandwidth such as medical/industrial instruments and active filtering.

3. Rail-to-Rail Input/Output: The GAP328X's input common-mode range includes both negative and positive rails, with an output swing that reaches between them. Additionally, the GAP328X can operate under either single or dual power supplies without additional bias circuits. These features make the GAP328X ideal for applications requiring rail-to-rail input/output such as battery-powered instruments and power converters/inverters.