MAX471 voltage and current sensor for measurement up to 25 V and 3 A

Information about this module is generated with the help of AI. The description may be incomplete, inaccurate, or subject to change.
The MAX471 Voltage Current Sensor is a module for measuring DC voltage and load current. The module uses a MAX471 current sensing circuit to measure current on the high side of the power supply. This allows current measurement without placing a sensing resistor in the ground connection.

The module also provides a separate voltage measurement using a resistive voltage divider. The voltage divider consists of a 30 kOhm resistor and a 7.5 kOhm resistor and reduces the input voltage to one fifth. The VT signal can therefore be connected to an analog input of a device such as an Arduino to measure the input voltage.

The MAX471 has an internal shunt resistor of approximately 35 mOhm and converts the measured load current into a current signal on OUT. The module has a 2.0 kOhm resistor connected between OUT and GND, which converts this current signal into a voltage. OUT therefore provides a voltage proportional to the load current at the module output. With a 2.0 kOhm resistor, the output is approximately 1 V per ampere.

The module can be used with microcontroller boards such as Arduino to monitor batteries, motors, DC loads and other electronic circuits.

When used with a 5 V analog input, the module is normally specified for an input voltage range of 3 to 25 V. For a 3.3 V system, the input voltage should be limited to approximately 16.5 V to keep VT within the 3.3 V analog input range.

Facts.
Product : MAX471 Voltage Current Sensor
Sensing circuit : MAX471
Function : DC voltage and load current measurement
Current measurement : High side
Current range : 0 to 3 A
Supply and measurement voltage : 3 to 25 V with 5 V analog input
Measurement voltage : 3 to 16.5 V with 3.3 V analog input
Internal shunt : Approximately 35 mOhm
OUT signal : Voltage proportional to load current
OUT conversion : Approximately 1 V per ampere
OUT resistor : 2.0 kOhm
VT voltage divider : 30 kOhm and 7.5 kOhm
VT ratio : 1 to 5
Arduino AVR analog resolution : Approximately 0.00489 V
Minimum equivalent input voltage : Approximately 0.02445 V
Typical use : Arduino and other microcontroller systems

Included.
1 pc module.

About the product.
Weight: approx 8 gram.
Contact us if you have questions at info@pchbutik.se
Article no: 2857
Remaining stock quantity can be found under the Product details tab.
In our range since: 2026-09-21

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