INA2181A4IDGST

Product Overview

Category: Integrated Circuit (IC)

Use: The INA2181A4IDGST is a high-precision, low-power, bidirectional current-sensing amplifier. It is designed for use in various applications that require accurate measurement of current flowing through a circuit.

Characteristics: - High precision: The INA2181A4IDGST offers excellent accuracy in measuring current, with a typical gain error of only ±0.5%. - Low power consumption: This IC operates at a low supply voltage and consumes minimal power, making it suitable for battery-powered applications. - Bidirectional sensing: The device can measure both positive and negative currents, allowing for versatile current monitoring. - Wide input voltage range: The INA2181A4IDGST can handle input voltages ranging from -16V to +80V, providing flexibility in different operating conditions.

Package: The INA2181A4IDGST is available in a small 14-pin TSSOP package, which ensures easy integration into various circuit designs.

Essence: The essence of the INA2181A4IDGST lies in its ability to accurately sense and measure bidirectional currents with high precision and low power consumption.

Packaging/Quantity: The INA2181A4IDGST is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Gain Error: ±0.5%
• Input Common-Mode Voltage Range: -16V to +80V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 60µA (typical)
• Bandwidth: 200kHz (typical)

Detailed Pin Configuration

The INA2181A4IDGST features a total of 14 pins, each serving a specific function. The pin configuration is as follows:

1. V+ (Positive Supply Voltage)
2. IN- (Negative Current Sense Input)
3. IN+ (Positive Current Sense Input)
4. REF- (Negative Reference Voltage)
5. REF+ (Positive Reference Voltage)
6. OUT (Output)
7. GND (Ground)
8. NC (No Connection)
9. NC (No Connection)
10. NC (No Connection)
11. NC (No Connection)
12. NC (No Connection)
13. NC (No Connection)
14. V- (Negative Supply Voltage)

Functional Features

The INA2181A4IDGST offers several functional features that make it a versatile current-sensing amplifier:

1. High Accuracy: With its low gain error, the device provides precise current measurements, ensuring reliable monitoring of circuit currents.
2. Bidirectional Sensing: The IC can measure both positive and negative currents, making it suitable for applications where current flows in either direction.
3. Low Power Consumption: Operating at a low supply voltage and consuming minimal power, the INA2181A4IDGST is ideal for battery-powered devices.
4. Wide Input Voltage Range: The device can handle a wide range of input voltages, allowing for flexibility in different operating conditions.

Advantages and Disadvantages

Advantages: - High precision current sensing - Bidirectional current measurement capability - Low power consumption - Wide input voltage range

Disadvantages: - Limited availability of alternative models - Relatively small package size may require careful PCB layout design

Working Principles

The INA2181A4IDGST operates based on the principle of current shunt measurement. It utilizes a precision resistor connected in series with the load to sense the current flowing through the circuit. The voltage drop across the shunt resistor is amplified by the IC and converted into a proportional output voltage.

Detailed Application Field Plans

The INA2181A4IDGST finds applications in various fields that require accurate current measurement, such as:

1. Power Management Systems: The IC can be used in power management systems to monitor current consumption and optimize energy efficiency.
2. Battery Monitoring: It is suitable for battery-powered devices, enabling precise monitoring of battery charging and discharging currents.
3. Motor Control: The device can be employed in motor control circuits to measure the current flowing through the motor windings, ensuring efficient operation.
4. Industrial Automation: In industrial automation systems, the IC can be utilized for current monitoring in control panels and machinery.

Detailed and Complete Alternative Models

While the INA2181A4IDGST is a highly capable current-sensing amplifier, alternative models with similar functionality include:

1. INA219: This IC offers similar features but includes an integrated 12-bit ADC for more accurate current measurements.
2. ACS712: A Hall-effect-based current sensor that provides galvanic isolation and high accuracy in current sensing applications.
3. MAX4080: Another bidirectional current-sensing amplifier with