AD8218BRMZ-R7

Product Overview

Category

The AD8218BRMZ-R7 belongs to the category of integrated circuit (IC) amplifiers.

Use

This product is primarily used for current sensing and monitoring applications.

Characteristics

• High accuracy and precision in current measurement.
• Wide input voltage range.
• Low power consumption.
• Small form factor.
• Suitable for both AC and DC current measurements.

Package

The AD8218BRMZ-R7 comes in a miniature 10-lead MSOP package.

Essence

The essence of this product lies in its ability to accurately measure and monitor current in various applications.

Packaging/Quantity

The AD8218BRMZ-R7 is typically packaged in reels, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Input Current Range: ±50A
• Gain Error: ±0.5%
• Bandwidth: 200 kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. VCC: Power supply pin.
2. GND: Ground reference pin.
3. IN+: Positive input pin for current measurement.
4. IN-: Negative input pin for current measurement.
5. REF: Reference voltage output pin.
6. OUT: Amplified current output pin.
7. SET: Gain setting pin.
8. NC: No connection.
9. NC: No connection.
10. NC: No connection.

Functional Features

• High common-mode rejection ratio (CMRR).
• Low offset voltage and drift.
• Built-in overcurrent detection.
• Programmable gain settings.
• Fast response time.

Advantages

• Accurate and precise current measurement.
• Wide operating voltage range allows for versatile applications.
• Compact size enables integration into space-constrained designs.
• Suitable for both AC and DC current sensing.
• Built-in overcurrent detection enhances system safety.

Disadvantages

• Limited input current range compared to some alternative models.
• Higher cost compared to certain lower-end current sensing solutions.
• Requires external components for proper operation.

Working Principles

The AD8218BRMZ-R7 utilizes a differential amplifier configuration to measure the voltage drop across a shunt resistor connected in series with the current path. This voltage is then amplified and converted into a proportional current output. The gain of the amplifier can be adjusted using the SET pin, allowing for flexibility in different applications.

Detailed Application Field Plans

1. Power management systems: The AD8218BRMZ-R7 can be used to monitor current consumption in power supplies, enabling efficient energy management and fault detection.
2. Motor control: By measuring the current flowing through motor windings, this product facilitates precise control and protection of motors in various applications.
3. Battery monitoring: Current sensing is crucial in battery management systems to ensure optimal charging and discharging processes, as well as to prevent overcurrent conditions.
4. Industrial automation: The AD8218BRMZ-R7 finds application in industrial machinery, where accurate current measurement is essential for process control and equipment protection.

Detailed and Complete Alternative Models

1. INA219: A highly integrated current sensing IC with I2C interface.
2. ACS712: Hall effect-based current sensor module with analog output.
3. MAX4080: Precision high-side current-sense amplifier with adjustable gain.
4. LT6105: High voltage, high-side current sense amplifier with wide input voltage range.

(Note: These alternative models are provided for reference and may have different specifications and features compared to the AD8218BRMZ-R7.)

In conclusion, the AD8218BRMZ-R7 is a versatile and accurate current sensing IC that finds application in various fields, including power management, motor control, battery monitoring, and industrial automation. Its compact size, wide operating voltage range, and built-in features make it a reliable choice for current measurement requirements.