Product Details
Key Features
Applications/Uses
VSENSE_FS (mV) (recomm.) | +/-125 +/-50 +/-500 |
VOS @25°C (µV) (max) | 600 |
Output Format | Voltage |
CMVR (V) (min) | 4.5 |
CMVR (V) (max) | 76 |
VCC (V) (min) | 4.5 |
VCC (V) (max) | 76 |
ICC (µA) (typ) | 103 |
Bi-Dir. Curr. Sense | Yes |
Gain | 20 V/V 5 V/V 60 V/V |
Gain Accuracy @25°C (%) (max) | 0.6 |
Oper. Temp. (°C) | -40 to +125 |
Package/Pins | SOIC (N)/8 UMAX/8 |
Budgetary Price (See Notes) | 1.46 |
Simplified Block Diagram
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Parameters
VSENSE_FS (mV) (recomm.) | +/-125 +/-50 +/-500 |
VOS @25°C (µV) (max) | 600 |
Output Format | Voltage |
CMVR (V) (min) | 4.5 |
CMVR (V) (max) | 76 |
VCC (V) (min) | 4.5 |
VCC (V) (max) | 76 |
ICC (µA) (typ) | 103 |
Bi-Dir. Curr. Sense | Yes |
Gain | 20 V/V 5 V/V 60 V/V |
Gain Accuracy @25°C (%) (max) | 0.6 |
Oper. Temp. (°C) | -40 to +125 |
Package/Pins | SOIC (N)/8 UMAX/8 |
Budgetary Price (See Notes) | 1.46 |
Key Features
- Ideal for High-Voltage Current Monitoring Applications
- Wide 4.5V to 76V Input Common-Mode Range
- Independent Operating Supply Voltage
- High Accuracy and Low Quiescent Current Support Precision Application Requirements
- ±0.1% Full-Scale Accuracy
- Low 100µV Input Offset Voltage
- Three Gain Versions Available
- 5V/V (MAX4080F/MAX4081F)
- 20V/V (MAX4080T/MAX4081T)
- 60V/V (MAX4080S/MAX4081S)
- 75µA Supply Current (MAX4080)
- Flexible Current Sensing Supports Monitoring of Charge and Discharge of Batteries
- Bidirectional (MAX4081) or Unidirectional(MAX4080) ISENSE
- Reference Input for Bidirectional OUT (MAX4081)
- Minimizes Required Board Space
- 8-Pin µMAX Package
Applications/Uses
- 48V Telecom and Backplane Current Measurement
- Automotive (12V, 24V, or 42V Batteries)
- Avalanche Photodiode and PIN-Diode Current Monitoring
- Bidirectional Motor Control
- General System/Board-Level Current Sensing
- Power-Management Systems
- Precision High-Voltage Current Sources
Description
For maximum versatility, the 76V input voltage range applies independently to both supply voltage (VCC) and common-mode input voltage (VRS+). High-side current monitoring does not interfere with the ground path of the load being measured, making the MAX4080/MAX4081 particularly useful in a wide range of high-voltage systems.
The combination of three gain versions (5V/V, 20V/V, 60V/V = F, T, S suffix) and a user-selectable, external sense resistor sets the full-scale current reading and its proportional output voltage. The MAX4080/MAX4081 offer a high level of integration, resulting in a simple, accurate, and compact current-sense solution.
The MAX4080/MAX4081 operate from a 4.5V to 76V single supply and draw only 75µA of supply current. These devices are specified over the automotive operating temperature range (-40°C to +125°C) and are available in a space-saving 8-pin µMAX® or SO package.
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 .