MAX471 Voltage Current Sensor IC SOP-8

MAX471 Voltage Current Sensor IC (SOP-8) delivers accurate bidirectional current and voltage measurement in compact designs. Engineers use it in battery monitoring, power management, and embedded systems to measure load current and supply voltage with minimal components.

Key Features:

• Integrated Current-Sense Resistor: Measures current directly without external shunt.
• Bidirectional Sensing: Monitors current flow in both directions.
• High-Side Measurement: Works on the supply side for safer and more accurate readings.
• Voltage Output: Provides analog voltage proportional to measured current.
• Compact SOP-8 Package: Saves PCB space in high-density designs.
• Low Supply Current: Reduces power draw in portable and low-power applications.

Technical Specifications:

• Operating Voltage: 3 V to 36 V supply range
• Current Measurement Range: Up to ±3 A (depending on supply voltage and load)
• Voltage Output Scale: 1 V per ampere (typical)
• Accuracy: ±3% typical at room temperature
• Bandwidth: DC to 20 kHz typical
• Quiescent Current: ~60 µA typical
• Operating Temperature Range: −40 °C to +85 °C

Mechanical Specifications:

• Package Type: SOP-8 surface-mount
• Lead Finish: Tin-plated for reliable soldering
• Body Material: Molded epoxy for standard IC packaging

Dimensions:

• Body Size: Approx. 3.9 mm × 4.9 mm
• Lead Pitch: 1.27 mm
• Lead Length: ~0.5 mm

Pinout and Wiring:

• Pin 1: VCC – Supply voltage input
• Pin 2: OUT – Voltage proportional to current
• Pin 3: GND – Ground reference
• Pin 4: V+ – High-side input from supply
• Pin 5: LOAD – Connection to load
• Pin 6–8: Internal or NC (check datasheet)
• Wiring Note: Place decoupling capacitor across VCC and GND for noise reduction

Datasheet Reference:

• Download the official Maxim Integrated MAX471 datasheet for full specifications, application examples, and design guidelines

Applications:

• Battery Management Systems: Monitor battery charge/discharge currents
• Solar Power Monitoring: Track panel output current and voltage
• Embedded Electronics: Measure current in microcontroller-based projects
• Industrial Automation: Implement load monitoring in control systems

Equivalent Models:

• MAX472: Lower current measurement range variant
• INA219: Digital I²C current/voltage sensor alternative
• ACS712: Hall-effect current sensor option

Package Includes:

• 1 x MAX471 Voltage Current Sensor IC (SOP-8)