CJMCU-4080 MAX4080SASA Current Sensing Amplifier Module
The MAX4080 / MAX4081 are high-side, current-sensing amplifiers with an input voltage range that extends from 4.5V to 76V making them ideal for telecom, automotive, backplane, and other systems where high-voltage current monitoring is critical. The MAX4080 is designed for unidirectional current-sensing applications and the MAX4081 allows bidirectional current sensing. The MAX4081 single output pin continuously monitors the transition from charge to discharge and avoids the need for a separate polarity output. The MAX4081 requires an external reference to set the zero-current output level (VSENSE = 0V). The charging current is represented by an output voltage from VREF to VCC, while discharge current is given from VREF to GND.
For maximum versatility, the 76V input voltage range apply 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 especially 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.
Specifications:
- Common Mode Input Voltage range: 4.5V to 76VDC
- Large Working Current: 190uA
- Full Scale Accuracy: ±0.1%
- Low Input Offset Voltage: 100μV
- Independent Working Power Supply Voltage: 4.5V to 76V
- Operating Temperature Range: -40°C to +125°C
Pinout:
- RS + : The positive pole of the external detection resistor
- RS - : The negative pole of the external detection resistor
- VCC: Positive power supply
- OUT: Conversion voltage output
- FIA, FIB: MAX4080 chip used by the module, no connection
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