Texas Instruments

INA149AID

The INA149AID is a high-side current shunt monitor IC from Texas Instruments. It is designed to measure the current flowing through a shunt resistor in a wide range of applications, including battery monitoring, motor control, and power management.

Description:

The INA149AID is a precision current shunt monitor that can measure both the current flowing through a shunt resistor and the voltage across the resistor. It features a low-drift amplifier, a low-offset amplifier, and a high-accuracy, low-drift voltage reference. The device is available in a small, thermally enhanced, 10-lead MSOP package.

Features:

• Wide input voltage range: 2.7V to 26V
• High accuracy: ±0.5% initial accuracy
• Low drift: 25ppm/°C max drift
• Wide shunt voltage range: up to 2V
• Low noise: 2.5µVRMS
• Low power consumption: 1.4mA max
• Programmable gain: 20V, 40V, 80V, or 160V
• I2C and SMBus compatible digital interface
• Thermal shutdown and overvoltage protection

Applications:

• Battery monitoring
• Motor control
• Power management
• Energy harvesting
• Solar panel monitoring
• Electric vehicle (EV) charging systems
• Fuel cell monitoring
• Medical equipment power management

The INA149AID is a versatile and accurate current shunt monitor that is suitable for a wide range of applications where precise current measurement is required. Its low drift and high accuracy make it an ideal choice for applications where reliability and precision are critical.