company blog about ON NCV2333DMR2G Low Power Zero-Drift 30µV Offset Operational Amplifier

Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycles the ON NCV2333DMR2G low-power, zero-drift, 30µV offset operational amplifier.

I. NCV2333DMR2G Product Overview

The NCV2333DMR2G is a dual-channel, zero-drift precision operational amplifier launched by ON Semiconductor, belonging to the NCS333 series. The ‘NCV’ prefix denotes AEC-Q100 automotive-grade certification. The device is housed in a compact MSOP-8 package and is supplied on tape and reel (DMR2G). The chip utilises an automatic zero-stabilisation, zero-drift architecture with a maximum input offset voltage of 30 µV. It combines ultra-low quiescent power consumption, a wide operating voltage range and rail-to-rail input/output characteristics. It is specifically designed for low-voltage battery-powered devices, automotive sensor data acquisition and industrial weak-signal conditioning applications, and is suitable for high-precision measurement requirements in long-term high and low-temperature environments.

II. NCV2333DMR2G Key Electrical Specifications

Number of channels: 2-channel dual operational amplifier

Maximum input offset voltage (Vos): 30 µV (Max), typically as low as 6 µV

Temperature drift of offset voltage: 0.07 µV/°C (maximum), achieving near-zero temperature drift

Single-channel quiescent current: 17 µA @ 3.3 V (typical), low-power design

Supply voltage range: 1.8 V to 5.5 V, single-supply low-voltage operation

Gain-bandwidth product (GBW): 270 kHz

Slew rate: 0.15 V/µs

Input bias current: 60 pA

Low-frequency noise (0.1 Hz to 10 Hz): 1.1 µVpp

Common-mode rejection ratio (CMRR): 123 dB

Input/output: Rail-to-rail (R-R)

Single-channel output drive current: 11 mA

Operating temperature range: –40 °C to +125 °C

Package: MSOP-8; Certification: AEC-Q100

III. Key Product Advantages of the NCV2333DMR2G

1. Zero-drift, automatic zero-stabilisation architecture for long-term measurement stability

Unlike general-purpose CMOS operational amplifiers, it continuously suppresses temperature and time drift, eliminating zero-point offset in weak signal acquisition. No external zero-adjustment circuit is required, simplifying bridge circuits and low-current detection solutions.

2. Automotive-grade reliability and suitability for harsh environments

The NCV series complies with automotive electronics specifications and operates stably across a wide temperature range, making it suitable for in-vehicle low-voltage sensing modules. Compared to the commercial NCS2333, it offers full automotive-grade traceability and change management capabilities.

3. Extremely low quiescent current, extending battery life

With a quiescent current of just 17 µA per channel, it is ideally suited for portable instruments, wireless sensing nodes and battery-powered data acquisition terminals, striking a balance between accuracy and power consumption.

4. Rail-to-rail input and output, making full use of low-voltage power supplies

With a minimum supply voltage of 1.8V, the input can be positioned close to the power rail, whilst output swing loss is minimal, maximising the dynamic measurement range in 3.3V/5V low-voltage systems.

5. Compact MSOP-8 package, saving PCB space

Significantly reduced footprint compared to SOIC-8, making it suitable for space-constrained hardware designs such as in-vehicle controllers and miniature sensor modules.

IV. Typical Application Scenarios for the NCV2333DMR2G

Automotive Electronics (Primary Automotive-Grade Applications)

Signal conditioning for in-vehicle temperature sensors, acquisition of seat pressure bridge signals, low-voltage current detection for batteries, and amplification of in-vehicle environmental sensor signals

Industrial Measurement and Control Equipment

Pressure sensors, load cell bridge amplification, 4–20 mA front-end signal conditioning, low-voltage precision current sampling, passive sensor buffering

Portable Battery-Powered Devices

Handheld measuring instruments, low-power IoT sensor terminals, weak biosignal acquisition for wearable devices

General-Purpose Precision Analogue Circuits

Active filter circuits, differential signal amplification, high-precision voltage followers