Texas Instruments Current Sense Amplifier SOT-23 5-Pin

The Texas Instruments Current Sense Amplifier SOT-23 5-Pin is a precision, surface-mount integrated circuit with a gain of 100 V/V, designed for accurate current monitoring in a wide range of electronic applications.

Overview

This amplifier provides signal amplification from small sense voltages and can be configured for both high-side and low-side current sensing. It operates from a single supply voltage ranging from 2.7 V to 5.5 V, supporting compatibility with common 3.3 V and 5 V logic systems. Its common-mode rejection ratio (CMRR) of 100 dB helps to minimise the effect of noise in electrically noisy environments.

Key Specifications

• Gain: 100 V/V
• Input offset voltage: 100 µV
• Input bias current: 80 µA
• Gain bandwidth product: 150 kHz, suited to DC and low-frequency sensing tasks
• Common-mode rejection ratio (CMRR): 100 dB
• Supply voltage: 2.7 V to 5.5 V

Package and Operating Range

The device is housed in a compact, industry-standard SOT-23 package with 5 pins, suited to space-constrained PCB designs. It is rated for an operating temperature range from -40 °C to +125 °C.

Applications

This current sense amplifier is suitable for power management, battery monitoring, and overcurrent protection circuits.