INA199A3DCKT

Current Regulation/Management Overview

The INA199A3DCKT is a unidirectional current sense amplifier from Texas Instruments, housed in a SC-70-6 surface-mount package. It features a fixed gain of 200 V/V and supports a common-mode voltage range up to 12 V. The device operates on a single supply voltage between 2.7 V and 26 V, with a typical quiescent current of 115 uA. Key electrical specifications include a maximum input offset voltage of 5 uV, an input bias current of 28 uA, and a gain error of 0.03%. It provides a high common-mode rejection ratio of 120 dB and a gain-bandwidth product of 14 kHz. The component is rated for operation within a temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Provides high accuracy with low gain error and low input offset voltage for precise current monitoring
• Supports bidirectional or unidirectional sensing with a wide common-mode voltage range up to 12 V
• Features ultra-low power consumption suitable for battery-operated applications
• Delivers high common-mode rejection ratio to maintain signal integrity in noisy environments

Current Regulation/Management Applications

• Battery management systems
• Overcurrent protection circuits
• Load switch control
• Power delivery monitoring

Current Regulation/Management Procurement Notes

Verify the specific suffix 'A3' confirms the 200 V/V fixed gain configuration before procurement. Ensure the 'CKT' designation matches the required cut-tape packaging format rather than reel quantities. Confirm RoHS compliance status and humidity sensitivity handling requirements during storage and assembly processes.

Current Regulation/Management Selection Notes

Select this part when a fixed 200 V/V gain is required for high-side or low-side current sensing. It is suitable for applications needing a wide common-mode voltage range up to 12 V. Consider the SC-70-6 package size for space-constrained designs. Verify that the 14 kHz bandwidth meets the dynamic response requirements of the target circuit.

Current Regulation/Management Part Context

This component belongs to the INA199 family of current sense amplifiers. It shares the same pinout and general architecture with variants like INA199A1 and INA199A2, differing primarily in fixed gain settings. The family is designed for low-power, high-accuracy current monitoring in portable and industrial electronics.

Current Regulation/Management Replacement Considerations

INA199A3DCKR offers identical electrical characteristics but in tape-and-reel packaging. INA199A2DCKT provides a 100 V/V gain option within the same package. Cross-reference datasheets to ensure gain and packaging compatibility.