Accurately measuring current is fundamental to controlling and protecting modern electronic systems. In applications like 48V automotive systems, industrial motor drives, and telecom power supplies, this must be done at increasingly higher voltages. The ATIA202KY Current Sense Amplifier from Analog Technologies is engineered to deliver precise, reliable high-side current sensing in these demanding environments.
Engineered for High-Voltage Precision
The ATIA202KY is a dedicated current shunt amplifier designed to extract a small differential voltage across a sense resistor placed in the high-side power path, even when the common-mode voltage far exceeds the supply voltage of the system's logic.
Key Features and Benefits:
- Very High Common-Mode Voltage Range: Operates with a common-mode voltage from -2V to +100V, independent of the supply voltage. This makes it ideal for 12V, 24V, 48V, and higher bus systems.
- Fixed High Gain: Provides a fixed 50V/V gain, amplifying small shunt resistor voltages to a measurable level, simplifying design and reducing external component count.
- Excellent Accuracy: Features a typical non-linearity of ±0.1% and a maximum gain error of ±0.5%, ensuring highly accurate current measurements for control and feedback loops.
- Wide Operating Supply Range: The amplifier itself operates on a single supply voltage from +2.7V to +40V, offering flexibility for interfacing with various microcontrollers and ADCs.
- Low Power Consumption: Consumes a typical supply current of 60µA, making it suitable for power-sensitive applications.
- Small Form Factor: Housed in a compact SOT23-5 package, it saves valuable PCB space in dense layouts.
Typical Applications
The ATIA202KY is the ideal solution for monitoring and protection in a wide array of high-voltage applications:
- Automotive Systems: Battery management systems (BMS), electric power steering, electronic braking, and 48V mild-hybrid systems.
- Industrial & Robotics: Motor control and drives, solenoid control, PLCs, and over-current fault detection.
- Telecommunications & Computing: Server power supplies, network equipment, and power distribution systems.
- Consumer Electronics: High-power audio amplifiers and appliance motor control.
The Advantage Over Discrete Solutions
Designing a high-side current sense circuit with discrete op-amps and precision resistors requires careful component selection to handle high voltage and maintain accuracy over temperature. The ATIA202KY integrates this functionality into a single, robust IC:
- Simplified Design: Reduces design time and component count.
- Enhanced Reliability: Built to perform reliably over temperature and time.
- Optimized Performance: Laser-trimmed resistors ensure stable gain and high CMRR.
Get Your Design Started Today
Simplify your high-voltage current sensing design with the robust and precise ATIA202KY amplifier.
>>> Click to Download the Full ATIA202KY Datasheet (PDF) <<<
For technical support or to request samples, please contact the Analog Technologies team.
