Analog Devices / Maxim Integrated MAX44284 Low-Power Current-Sense Amplifiers
Analog Devices MAX44284 Low-Power Current-Sense Amplifiers are high-side, current-sense amplifiers with a 1.7V to 5.5V single supply. These Analog Devices devices are optimized for very low-power operation and use only 21µA of quiescent current. The MAX44284 offers precision accuracy specifications of 2µV VOS and a gain error of 0.05%. Each device features an input common-mode voltage range from -0.1V to +36V. These current-sense amplifiers have a voltage output and are offered in four different gain versions. The MAX44284 is offered in small 6-bump, 0.4mm-pitch WLP (1.3mmx0.9mm), and 6-pin SOT23 packages and is specified for operation over the -40°C to +125°C automotive temperature range.
Features
- Supports the Use of Small Current-Sense Resistors to Improve Power-Supply Conversion Efficiency and Measurement Accuracy
- Input Bias Current of 80nA (max)
- Very Low 2µV Input Offset Voltage (MAX44284F/H)
- Extremely Low 50nV/°C Input Offset Tempco Coefficient
- -0.1V to +36V Wide Input Common-Mode Range
- Low 0.05% Gain Error
- Extends Battery Life
- Low Supply Current of 21µA
- 1.7V to 5.5V Single Supply
- Shutdown Input (Independent of VDD)
- Four Fixed Gain Options Simplify Design
- 50V/V – MAX44284F
- 100V/V – MAX44284H
- 200V/V – MAX44284W
- 500V/V – MAX44284E
Applications
- Base-Stations
- DC-DC Current Sensing in Power Management
- Medical Pulse Oximeters and Infusion Pumps
- Notebook Computers
- Portable-/Battery-Powered Systems
- Smartphones and Tablets
Typical Application Circuit
Evaluation Kit
Analog Devices / Maxim Integrated MAX44284EVKIT Evaluation Kit
Designed to evaluate the MAX44284, a high-precision, low-power, current-sense amplifier.
Paskelbta: 2017-05-15
| Atnaujinta: 2023-04-21