Microchip Technology MIC333/MIC2333 Zero-Drift Op Amps
Microchip Technology MIC333/MIC2333 Zero-Drift Operational Amplifiers offer input offset voltage correction at the cost of very low offset and offset drift. These amplifiers are low-power devices with a typical gain bandwidth product (GBWP) of 300kHz. Additionally, these devices are unity-gain stable, without 1/ƒ noise, and have a good power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR). The Microchip Technology MIC333/MIC2333 devices operate with a single supply voltage as low as +1.8V, drawing 23µA/amplifier (typical) of quiescent current. These zero-drift operational amplifiers are designed using an advanced CMOS process in single (MIC333) and dual (MIC2333) packages.
Features
- High DC precision
- ±8µV (max.) offset voltage (VOS)
- ±0.03µV/°C (max.) offset voltage drift (VOS drift)
- 120dB minimum open-loop gain (AOL) at VDD = 5.5V
- 120dB minimum Power Supply Rejection Ratio (PSRR) at VDD = 5.5V
- 120dB minimum Common-Mode Rejection Ratio (CMRR) at VDD = 5.5V
- 1µVP-P typical input noise voltage (Eni) from ƒ = 0.1Hz to 10Hz
- Low power and supply voltages
- 23µA typical quiescent current per amplifier (IQ)
- +1.8V to +5.5V supply voltage range
- Rail-to-rail input/output (I/O)
- Gain Bandwidth Product (GBWP) of 300kHz (typ.)
- Unity gain stable
- Extended -40°C to +125°C temperature range
- Available package options
- Single operational amplifier: MIC333
- Dual operational amplifier: MIC2333
- Packaging
- 5-Lead SC70 (MIC333 only)
- 5-Lead SOT-23 (MIC333 only)
- 8-Lead MSOP (MIC2333 only)
- Automotive qualified (AEC Q100, Grade 1)
Applications
- Sensor conditioning
- Portable electronics
- Medical instrumentation
- Temperature measurement
- DC offset correction
- Automotive electronics
Additional Resources
- Datasheet
- SPICE macro models (Zip)
- FilterLab® Software 2.0 (Download)
- Application Note: Op Amp Precision Design: Random Noise
- Application Note: Operational Amplifier Topologies and DC Specifications
- Application Note: Operational Amplifier AC Specifications and Applications
- Application Note: Analog Sensor Conditioning Circuits - An Overview
- Application Note: Op Amp Precision Design: DC Errors
Typical Application Circuit
Published: 2025-07-30
| Updated: 2025-08-05