LT1990IS8#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Current Sense Amplifier
• Characteristics:
  • High precision current sensing
  • Wide input voltage range
  • Low offset voltage and drift
  • Rail-to-rail output swing
• Package: SOIC-8
• Essence: The LT1990IS8#PBF is a high precision current sense amplifier designed for accurate measurement of current in various applications.
• Packaging/Quantity: The LT1990IS8#PBF is available in a standard SOIC-8 package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: ±2.7V to ±18V
• Input Common Mode Voltage Range: -0.3V to V+ + 0.3V
• Input Offset Voltage: ±100μV (maximum)
• Input Bias Current: ±50nA (maximum)
• Gain Bandwidth Product: 1MHz
• Output Voltage Swing: Rail-to-Rail
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LT1990IS8#PBF has the following pin configuration:

___________ OUT | 1 8 | V+ IN- | 2 7 | REF IN+ | 3 6 | GND VS- | 4 5 | VS+ |___________|

Functional Features

• High accuracy current sensing with low offset voltage and drift
• Wide input voltage range allows for versatile applications
• Rail-to-rail output swing enables full utilization of the supply voltage range
• Internal reference voltage for precise measurements
• Low power consumption for energy-efficient operation

Advantages and Disadvantages

Advantages: - High precision current sensing - Wide input voltage range - Rail-to-rail output swing - Low offset voltage and drift

Disadvantages: - Limited operating temperature range (-40°C to 85°C) - Requires external power supply

Working Principles

The LT1990IS8#PBF operates by amplifying the voltage across a sense resistor, allowing accurate measurement of current flowing through it. The amplifier's high precision and low offset voltage ensure minimal measurement errors. The rail-to-rail output swing enables the full utilization of the supply voltage range, providing maximum dynamic range for current sensing applications.

Detailed Application Field Plans

The LT1990IS8#PBF is commonly used in various applications that require accurate current sensing, such as:

1. Power management systems
2. Battery monitoring and protection circuits
3. Motor control systems
4. Industrial automation
5. Current monitoring in electronic equipment

Detailed and Complete Alternative Models

1. INA219 - High-side current/power monitor with I2C interface
2. MAX4080 - Precision high-side current-sense amplifier
3. AD8210 - High common-mode voltage, current shunt monitor

These alternative models offer similar functionality and can be considered as alternatives to the LT1990IS8#PBF depending on specific application requirements.

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