MAX44250
20V, Ultra-Precision, Low-Noise Op Amps
Innovative Combination of High Voltage (2.7V to 20V) Capability, Industry's Lowest Noise, and Autozero Precision in a SOT23 Package
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Key Features
Applications/Uses
| Unity Gain BW (MHz) (typ) | 10 |
| Input IBIAS (nA) (max) | 1.4 |
| VOS (µV) (max) | 9 |
| VSUPPLY (Total) (V) (min) | 2.7 |
| VSUPPLY (Total) (V) (max) | 20 |
| # Amplifiers | 1 |
| Rail to Rail | Output Only |
| Package/Pins | SOT23/5 UMAX/8 |
| Budgetary Price (See Notes) | 1.03 |
Simplified Block Diagram
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Parameters
| Unity Gain BW (MHz) (typ) | 10 |
| Input IBIAS (nA) (max) | 1.4 |
| VOS (µV) (max) | 9 |
| VSUPPLY (Total) (V) (min) | 2.7 |
| VSUPPLY (Total) (V) (max) | 20 |
| # Amplifiers | 1 |
| Rail to Rail | Output Only |
| Package/Pins | SOT23/5 UMAX/8 |
| Budgetary Price (See Notes) | 1.03 |
Key Features
- High Accuracy Enables Precision Signal Chain Acquisition
- 6µV Input Offset Voltage (max) at Room Temperature
- TCVOS of 19nV/°C (max)
- Low 5.9nV/
Input-Referred Voltage Noise - 123nVP-P in 0.1Hz to 10Hz
- 10MHz Gain-Bandwidth Product
- Rail-to-Rail Output
- Fast 400ns Settling Time
- 2.7V to 20V Power-Supply Range Supports Wide Range of Sensors
- Integrated EMI Filter Reduces Impact of Radio Frequency Interference on Signal Chain Performance
Applications/Uses
- Load Cell and Bridge Transducer Amplification
- Medical Instrumentation
- Precision Instrumentation
- Pressure Transducers
- Strain Gauges
Description
The MAX44250/MAX44251/MAX44252 are 20V, ultra-precision, low-noise, low-drift amplifiers that offer nearzero DC offset and drift through the use of patented auto-correlating zeroing techniques. This method constantly measures and compensates the input offset, eliminating drift over time and temperature and the effect of 1/f noise. These single, dual, and quad devices feature rail-to-rail outputs, operate from a single 2.7V to 20V supply or dual ±1.35V to ±10V supplies and consume only 1.15mA per channel, while providing 5.9nV/ input-referred voltage noise. The ICs are unity-gain stable with a gain-bandwidth product of 10MHz.
With excellent specifications such as offset voltage of 6µV (max), drift of 19nV/°C (max), and 123nVP-P noise in 0.1Hz to 10Hz, the ICs are ideally suited for applications requiring ultra-low noise and DC precision such as interfacing with pressure sensors, strain gauges, precision weight scales, and medical instrumentation.
The ICs are available in 5-pin SOT23, 8-pin SOT23, 8-pin µMAX®, and 14-pin SO packages and are rated over the -40°C to +125°C temperature range.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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