Product Details
Key Features
Applications/Uses
VSENSE_FS (mV) (recomm.) | 150 |
VOS @25°C (µV) (max) | 3000 |
Output Format | Voltage |
CMVR (V) (min) | 0 |
CMVR (V) (max) | 28 |
VCC (V) (min) | 3 |
VCC (V) (max) | 28 |
ICC (µA) (typ) | 420 |
Bi-Dir. Curr. Sense | No |
Gain | 100 V/V 20 V/V 50 V/V |
Gain Accuracy @25°C (%) (max) | 2.5 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | SOIC (N)/8 SOT23/6 |
Budgetary Price (See Notes) | 1.26 |
Simplified Block Diagram
Technical Docs
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Parameters
VSENSE_FS (mV) (recomm.) | 150 |
VOS @25°C (µV) (max) | 3000 |
Output Format | Voltage |
CMVR (V) (min) | 0 |
CMVR (V) (max) | 28 |
VCC (V) (min) | 3 |
VCC (V) (max) | 28 |
ICC (µA) (typ) | 420 |
Bi-Dir. Curr. Sense | No |
Gain | 100 V/V 20 V/V 50 V/V |
Gain Accuracy @25°C (%) (max) | 2.5 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | SOIC (N)/8 SOT23/6 |
Budgetary Price (See Notes) | 1.26 |
Key Features
- Low-Cost, Compact Current-Sense Solution
- High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage
- Three Gain Versions Available
- +20V/V (MAX4173T)
- +50V/V (MAX4173F)
- +100V/V (MAX4173H)
- ±0.5% Full-Scale Accuracy
- ±3mV Input Offset Voltage (MAX4173T)
- Wide 1.7MHz Bandwidth (MAX4173T)
- 420µA Supply Current
- Available in Space-Saving SOT23 Package
Applications/Uses
- Cell Phones
- General System/Board-Level Current Monitoring
- Notebook Computers
- PA Bias Control
- Portable Battery-Powered Systems
- Power-Management Systems
- Precision Current Sources
- Smart Battery Packs/Chargers
Description
The combination of three gain versions and a user-selectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact current-sense solution.
The MAX4173 operates from a single +3V to +28V supply, typically draws only 420µA of supply current over the extended operating temperature range (-40°C to +85°C), and is offered in the space-saving SOT23 package.
How to Measure Current with the MAX4173 Current-Sense Amplifier and a Microcontroller
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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 .