New Product Recommendation: Zhongwei Aixin Launches a High-Precision, Zero-Drift Operational Amplifier Series
Introduction
In applications such as industrial sensing, medical diagnostics, and precision measurement, weak signals are highly susceptible to interference from background noise and system offset voltages, placing stringent demands on the DC accuracy and thermal stability of front‑end amplifiers. To address these requirements, Zhongwei Aixin has introduced a family of high‑precision, zero‑drift operational amplifiers, featuring typical specifications including sub‑microvolt input offset voltage and extremely low temperature drift coefficients. This product line is well suited for conditioning weak sensor signals and for high‑accuracy data acquisition chains, delivering stable signal gain across the full temperature range. Moreover, the devices offer multiple bandwidth options, enabling seamless support for both low‑frequency, high‑precision measurements and mid‑to‑high‑frequency dynamic signal processing, thereby providing a reliable analog front‑end solution for high‑resolution signal chain designs.
Product model
Mid‑range, high‑precision, zero‑drift operational amplifiers with broad coverage AiP07、 AiP853X, AiP855X, AiP856X, AiP858X 、 AiP851X* Six major series, with offset voltages as low as 5 µV and temperature drift as low as 0.05 µV/°C, while supporting a range of bandwidth requirements:
- AiP07: The supply voltage range is 6 to 36 V, with an offset voltage of less than 150 µV (maximum) and a gain–bandwidth product of 600 kHz, making it suitable for medium-speed, high-precision measurement applications powered by a wide input voltage range.
- AiP853X Series : Offset voltage less than 10 µV (max), gain–bandwidth product of 350 kHz, suitable for medium-speed, high-precision dynamic signal processing.
- AiP855X Series : Offset voltage less than 5 µV (max), gain-bandwidth product of 3.5 MHz— an excellent choice for high-precision instrumentation.
- AiP856X Series : Offset voltage less than 10 µV (max), gain–bandwidth product of 11 MHz—ideal for high-speed data acquisition systems.
- AiP858X Series : Offset voltage less than 10 µV (max), gain–bandwidth product of 15 MHz, suitable for ultra‑high‑speed industrial data acquisition, closed-loop control, and other applications.
- AiP851X* Series: The supply voltage range is 4.5 to 40 V, with an offset voltage of less than 15 µV (maximum) and a gain–bandwidth product of 12 MHz, making it well suited for industrial data acquisition applications powered by ultra‑wide voltage supplies or operating in environments with highly fluctuating power sources.
The high-precision, zero-drift series of operational amplifiers feature low offset and zero drift, with performance specifications that directly match those of leading international brands, making them a reliable choice for domestic substitution.
Key parameters
- Operating voltage: 2.4 V to 40 V
- Input offset voltage: ≤150 µV (MAX)
- Input offset temperature drift: ≤0.7 µV/°C
- Gain Bandwidth: 600 kHz / 350 kHz / 3.5 MHz / 11 MHz / 15 MHz / 12 MHz
- Open-loop gain: 120–150 dB
- Power Supply Rejection Ratio: 115–150 dB
- Common-mode rejection ratio: 110–150 dB
Product Advantages
1. Ultra-low offset + Full-temperature zero-drift
- Employing a chopper‑stabilized architecture, the entire product line delivers a maximum offset of just 5 µV and a temperature drift as low as 0.05 µV/°C, effectively suppressing zero‑drift across the full temperature range and ensuring that weak sensor signals are amplified without any temperature‑induced errors.
2. Wide voltage range coverage + robust power supply compatibility
- It covers a wide voltage range of 2.4 to 40 V, is compatible with various power‑supply architectures, simplifies power‑design efforts, and supports diverse applications such as industrial equipment and portable testing devices.
3. Rail-to-rail architecture, with no signal distortion.
- Under low-voltage operating conditions, it fully exploits the voltage swing, ensures undistorted small-signal acquisition, and is optimized for battery-powered operation, making it ideal for portable instrument design.
4. Flexible bandwidth selection across multiple tiers
- A product portfolio spanning multiple gain–bandwidth combinations, seamlessly addressing the needs of mid- to high-frequency dynamic signal processing while offering flexible adaptation to a wide range of complex scenarios.
5. High Gain + Strong Immunity to Interference
- 120–150 dB open-loop gain, high closed-loop control accuracy, reduced steady-state error in the amplification loop, and improved sampling precision.
- High power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR), effectively suppressing power‑supply ripple and common‑mode interference, making it well suited for demanding industrial and automotive environments.
6. Complete channels and packaging
- Provide Single/Double/Four-channel , with or without an enable configuration, is optional.
- It supports compact packages such as SOT23‑5, MSOP8, and DFN8, enabling space‑efficient PCB layouts and adapting to the diverse form factors of automotive and portable devices.
Application areas
- Precision current sensing : Charging pile metering modules, industrial control servo power supplies, smart meters, etc.
- Sensor Signal Conditioning : Thermocouple temperature controllers, diffused-silicon pressure transmitters, strain-gauge weighing modules, etc.
- Medical precision equipment : Medical devices such as electrocardiographic monitors, electronic sphygmomanometers, and preamplifiers for biochemical analyzers
- Automotive BMS : Power batteries for new energy vehicles, high-voltage box BMS acquisition modules, cell voltage acquisition boards, etc.
Conclusion
The high-precision, zero-drift operational amplifier series launched by Zhongwei Aixin is based on… Microvolt-level low offset, zero temperature drift, low noise, wide supply voltage range With its core advantages and flexible multi‑bandwidth options, it seamlessly balances high‑precision sampling with dynamic signal processing, making it an excellent domestically produced solution for upgrading system performance in industrial sensing, medical devices, and precision measurement applications. Meanwhile, Zhongwei Aixin offers a stable supply chain, comprehensive technical support, and cost‑effective products, enabling rapid response to customers’ customized requirements.
(Source: Zhongwei Aixin official website)
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