Texas Instruments Current Sense Amplifier, SOIC 8-Pin

The Texas Instruments Current Sense Amplifier is a high-side, bi-directional, zero-drift current shunt and power monitor featuring an I²C- or SMBUS-compatible interface. This advanced device monitors both shunt voltage drop and bus supply voltage, complete with programmable conversion times and filtering options for versatile application.

A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The interface features 16 programmable addresses, whilst the device senses across shunts on buses varying from 0 to 26V. Operating on a single 3 to 5.5V supply, it draws a maximum of 1mA of supply current, making it highly efficient.

Key Features

• High-side bi-directional zero-drift monitoring
• I²C- or SMBUS-compatible interface with 16 programmable addresses
• Direct readouts of current in amperes and power in watts
• Programmable calibration, conversion times, and filtering
• 26V maximum common-mode voltage
• High CMRR of 120dB and low input offset voltage of 10µV

With compact dimensions of 43 mm in height, 33 mm in width, and 15 mm in depth, and weighing just 0.1 grams, this surface-mount amplifier is designed for space-constrained environments. It operates reliably across a wide temperature range from -40°C to 125°C, ensuring robust performance in demanding conditions.