INA199C1DCKR

Current Regulation/Management Overview

The INA199C1DCKR is a single-channel, bi-directional current sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 26 V and supports common-mode voltages from -100 mV to 26 V. The device features a fixed gain of 50 V/V, a gain bandwidth product of 80 kHz, and a typical input offset voltage of 5 µV. It exhibits a minimum common-mode rejection ratio (CMRR) of 100 dB and draws a typical operating supply current of 65 µA. The component is housed in a compact SC-70-6 surface-mount package and functions reliably across an extended temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Bi-directional current sensing capability supporting both low-side and high-side configurations
• Zero-drift architecture ensuring stable performance with minimal input offset voltage drift
• Wide common-mode voltage range extending below ground to accommodate various circuit topologies

Current Regulation/Management Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops for load regulation
• Overcurrent protection circuits in power distribution units

Current Regulation/Management Procurement Notes

Verify the specific suffix DCKR confirms the SC-70-6 package and tape-and-reel orientation. Confirm the C1 grade designation aligns with required accuracy specifications. Ensure compatibility with RoHS3 standards if mandated by regional regulations. Validate moisture sensitivity level requirements during storage and handling procedures.

Current Regulation/Management Selection Notes

Select this component when bi-directional measurement is necessary within a wide common-mode voltage window. The fixed 50 V/V gain suits applications where output swing matches standard ADC inputs. Consider the low quiescent current for battery-operated designs. Verify that the SC-70-6 footprint fits the available PCB real estate constraints.

Current Regulation/Management Part Context

This part belongs to the INA199 family of zero-drift current sense amplifiers. It shares architectural similarities with variants like INA199A1DCKR but differs in initial accuracy grades. The series emphasizes precision and stability over high-speed response, making it suitable for DC or low-frequency sensing tasks rather than fast transient detection.

Current Regulation/Management Replacement Considerations

INA199A1DCKR offers similar functionality with potentially different initial accuracy grades. INA199B1DCKR provides alternative gain options within the same package. Cross-reference datasheets for exact CMRR and offset voltage tolerances before substitution.