LT1990AIS8#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: The LT1990AIS8#TRPBF is a precision, high-side current sense amplifier designed for monitoring current in a variety of applications. It provides accurate measurements of current flowing through a shunt resistor and converts it into a proportional voltage output.

Characteristics: - High accuracy and precision - Wide input voltage range - Low offset voltage and drift - High common-mode rejection ratio - Low power consumption

Package: The LT1990AIS8#TRPBF comes in an 8-pin SOIC package, which offers ease of integration onto circuit boards.

Essence: The essence of the LT1990AIS8#TRPBF is to accurately measure current by amplifying the voltage across a shunt resistor.

Packaging/Quantity: The LT1990AIS8#TRPBF is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 36V
• Input Common-Mode Voltage Range: -0.3V to 36V
• Gain Bandwidth Product: 1 MHz
• Input Offset Voltage: ±100µV (maximum)
• Quiescent Current: 500µA (typical)
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1990AIS8#TRPBF has the following pin configuration:

1. V+
2. IN+
3. IN-
4. REF
5. OUT
6. GND
7. SET
8. V-

Functional Features

• High accuracy current sensing
• Wide input voltage range allows for versatile applications
• Low offset voltage and drift ensure precise measurements
• High common-mode rejection ratio minimizes errors caused by common-mode voltage
• Low power consumption for energy-efficient designs

Advantages and Disadvantages

Advantages: - Accurate and precise current sensing - Wide input voltage range for versatile applications - Low offset voltage and drift ensure accurate measurements - High common-mode rejection ratio reduces errors - Low power consumption for energy efficiency

Disadvantages: - Limited gain bandwidth product may restrict high-frequency applications - Requires an external shunt resistor for current measurement

Working Principles

The LT1990AIS8#TRPBF operates by amplifying the voltage across a shunt resistor. The input current flows through the shunt resistor, creating a voltage drop. This voltage is then amplified by the amplifier circuitry within the IC, producing a proportional output voltage. By measuring this output voltage, the current flowing through the shunt resistor can be accurately determined.

Detailed Application Field Plans

The LT1990AIS8#TRPBF finds applications in various fields, including:

1. Power management systems
2. Battery monitoring and protection circuits
3. Motor control systems
4. Current monitoring in industrial equipment
5. Overcurrent protection circuits

Detailed and Complete Alternative Models

1. INA219 - High-side current sense amplifier with I2C interface
2. MAX4080 - Precision high-side current sense amplifier
3. AD8210 - High common-mode voltage difference amplifier for current sensing
4. LTC6101 - High-side current sense amplifier with adjustable gain
5. ACS712 - Hall effect-based linear current sensor

These alternative models offer similar functionality to the LT1990AIS8#TRPBF and can be considered as alternatives based on specific application requirements.

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