CS30AL

Overview

The CS30AL is a high-side current sense amplifier manufactured by STMicroelectronics, designed to measure small differential voltages across a shunt resistor and translate them into a ground-referenced output voltage. It features an internally fixed gain of 50 V/V, a wide common-mode operating range from 2.8 V to 30 V, and a supply voltage range of 4 V to 24 V. The device operates with low quiescent current, typically 165 µA, and supports input bias currents as low as 5.5 µA. It offers a bandwidth of 500 kHz, a slew rate of 0.9 V/µs, and an input offset voltage of 200 µV. The amplifier is housed in a compact SOT-23-5 package and functions reliably within a temperature range of -40°C to 125°C.

Feature Summary

• Independent power supply and input common-mode voltage domains allow flexible circuit design.

Applications

• High-side current sensing in battery-powered systems
• Power management circuits requiring ground-referenced output
• Industrial control applications with wide common-mode voltage requirements

Procurement Notes

Verify the specific suffix 'AL' against the manufacturer's official datasheet to confirm pinout compatibility and electrical characteristics. Ensure the selected packaging option matches the required assembly process. Confirm RoHS compliance status for environmental regulations. Cross-reference the ordering part number with the distributor's catalog to avoid substitution errors during procurement.

Selection Notes

Select this component when a single-channel high-side current amplifier with a fixed 50 V/V gain is required. The SOT-23-5 package suits space-constrained designs. Verify that the application's common-mode voltage remains within the 2.8 V to 30 V operational range. Consider the 165 µA quiescent current for low-power system budgets.

Part Context

The CS30AL belongs to the CS30 family of high-voltage operational amplifiers optimized for current sensing. This series provides buffered outputs and independent supply inputs, distinguishing it from standard op-amps. The AL variant specifies the particular gain configuration and packaging available from STMicroelectronics for integration into monitoring and protection circuits.

Replacement Considerations

Consult the official CS30 datasheet for confirmed substitute part numbers within the same family. Verify that any alternative maintains the 50 V/V gain and SOT-23-5 footprint. Do not assume functional equivalence with other current sense amplifiers without checking pinout and electrical specifications.