Precision signal chain design faces challenges in temperature drift and energy efficiency under low-voltage, low-power conditions. RuiMeng Technology introduces the MS8333-1 ultra-low-power, ultra-small CMOS operational amplifier. With three key performance metrics—±3μV offset voltage, ±20nV/℃ temperature drift, and 34μA quiescent current—it delivers high-precision signal conditioning for medical devices, industrial sensors, and IoT nodes.
(Image: Size comparison of MS8333-1 SOT353-5 and a 1-yuan coin)
(Image: Typical application diagram of MS8333-1)
Core Advantages
Ultra-Low Offset & Near-Zero Drift
-
Ultra-low offset voltage: ±3μV
-
Ultra-low offset drift: ±20nV/℃
-
Effectively eliminates measurement errors caused by temperature variations, significantly enhancing long-term system stability and precision. Ideal for high-accuracy sensor signal conditioning.
Wide Supply Voltage & Ultra-Low Power
-
Supply voltage range: 1.8V - 5.5V
-
Supply current: 34μA @5V
-
Supports single-cell battery power, dramatically extending battery life for portable and IoT devices.
Rail-to-Rail Input/Output
Input common-mode voltage range and output swing cover both supply rails, maximizing signal dynamic range under low-voltage conditions.
Low Noise & Low Input Bias Current
-
0.1Hz - 10Hz voltage noise: 0.7μV
-
Input bias current: 70pA
-
Ensures high-fidelity amplification of weak signals and minimizes impact on high-impedance sensor sources.
Technical Specifications
| Key Parameter | Performance Metric |
|---|---|
| Number of Channels | 1 |
| Operating Voltage Range (V) | 1.8 - 5.5 |
| Gain Bandwidth Product (Typ) (MHz) | 0.4 |
| Slew Rate (Typ) (V/µs) | 0.34 |
| Rail-to-Rail | In, Out |
| Offset Voltage (25°C) |
|
| - Typical (μV) | 3 |
| - Maximum (μV) | 15 |
| Input Bias Current (25°C) (Typ) (pA) | 70 |
| Offset Voltage Drift (Typ) (μV/°C) | 0.02 |
| Voltage Noise Density f=1kHz (Typ) | 0.02 nV/√Hz |
| Quiescent Current per Channel (Typ) | 0.034 mA |
| Operating Temperature Range (°C) | -40 to +125 |
| Package Options | SOT353-5 / SOT23-5 / MSOP8 |
(Note: Refer to the datasheet for details)
Application Scenarios
With its exceptional low offset, low drift, low power, and low-voltage operation, MS8333 is ideal for:
-
Battery-Powered Instruments: Extends battery life by >40% in handheld test equipment (multimeters/data loggers) and portable industrial meters. Rail-to-rail output ensures full dynamic range in low-voltage signal chains.
-
Temperature Measurement: As a preamplifier for thermocouples/RTDs, its ±20nV/℃ drift ensures measurement consistency across temperatures. ±3μV initial offset reduces calibration complexity, resolving accuracy degradation in traditional op-amps.
-
Medical Devices: Enhances bioelectric signal acquisition (e.g., ECG/EEG) with 0.7μV low-frequency noise and 70pA input bias current, reducing distortion risks.
-
IoT Sensors: Enables μA-level operation for gas/chemical sensors under 1.8V single-cell power, providing maintenance-free precision signal conditioning for wireless monitoring nodes.
-
Extended Applications: Motor control current sensing, industrial transmitters, precision power management, and other high-impedance signal amplification scenarios.
RuiMeng Technology’s MS8333-1 operational amplifier empowers engineers to achieve high-precision signal conditioning in wide-voltage, low-power scenarios. Its superior offset and drift performance—combined with wide supply range and ultra-low power—effectively boosts system accuracy, simplifies design, and extends battery life.
(2227x1485).jpg)
.png)